********** ** 18 **HESSE ********** FCN= 3269.980 FROM HESSE STATUS=OK 253 CALLS 1193 TOTAL EDM= .13E-06 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 7.6305 9.8536 .36555E-03 -1.5653 2 norm .31974E-07 31.912 .12097E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor .16653E-09 5.8683 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 4 norm .69349 .77180 .61299E-03 -1.5691 5 Prefactor .28882E-06 11.040 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 6 Prefactor 3.3382 12.589 .56455E-03 -1.5671 7 Prefactor .31519E-06 13.301 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 Prefactor .24930E-06 10.583 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor .22204E-09 3.2489 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 10 norm .0000 2.4852 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 12.738 6.3110 .28014E-03 -1.5637 12 Prefactor .38797E-06 13.830 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm .0000 .39493 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 14 norm 3.6827 5.9499 .52418E-03 -1.5670 15 Prefactor 4.4973 8.9780 .47291E-03 -1.5666 16 Normalizat 1.2387 .23212 .34006E-01 -.85414 17 Prefactor .50121 .19902 .62396E-01 -1.1192 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.31005e-07 Minuit parameter uncertainties: 1 9.85358 2 0.00202083 3 6.27636e-05 4 0.771801 5 0.00357133 6 12.5894 7 0.0040952 8 0.00324853 9 5.28741e-05 10 1.45631e-05 11 6.311 12 0.00463259 13 1.13531e-06 14 5.9499 15 8.97806 16 0.232316 17 0.199295 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.97997143 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 3.880e-07 4.633e-03 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 1.993e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 2.323e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): -0.00 Ra Dec: 352.839 -15.978 Photon Flux Upper Limit: 1.00272415906e-07 ph cm-2 s-1 Energy Flux Upper Limit: 0.00781961435515 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/36255194/likelihoodResults_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.txt Performing a free index iterative likelihood fit... Freezing all point sources, except source of interest... Done. Freeing candidate source... Done. Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 3270.01516359 delta logL = -0.0351921620809 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 3269.9799729 delta logL = -1.4697025108e-06 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .46796E-06 1.0000 .0000 .10000E+07 2 'Index ' 1.8099 1.0000 .0000 10.000 3 'Normalizat' 1.2383 1.0000 .10000E-01 10.000 4 'Prefactor ' .50158 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 37 CALLS 251 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 14.875 .42118E-03** at limit ** 2 Index 2.4580 1.1489 .18084E-03 .0000 3 Normalizat 1.2387 1.0946 .13152E-04 .13829E-03 4 Prefactor .50121 .84354 -.97261E-05 .16252E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 2.45798 Normalizat = 1.23873 Prefactor = 0.501209 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM HESSE STATUS=FAILED 9 CALLS 260 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 14.875 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .67957 1.8706 .18084E-03 -.53333 3 Normalizat 1.2387 1.0946 .13152E-04 -.85414 4 Prefactor .50121 .84354 -.97261E-05 -1.1192 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 4.81894e-11 Minuit parameter uncertainties: 1 8.88918e-06 2 1.16304 3 1.11597 4 0.86611 shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 101 logL (Free Index) = 3269.97997141 delta logL = 1.39739313454e-08 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 0.000e+00 8.889e-06 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.458e+00 1.163e+00 0.000e+00 1.000e+01 (-1.000e+00) 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 8.661e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 1.116e+00 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): -0.00 Ra Dec: 352.839 -15.978 Creating a high resolution counts map... INFO: Auto-setting vmin to 0.000e+00 [aplpy.core] INFO: Auto-setting vmax to 0.000e+00 [aplpy.core] Saving /lscratch/kocevski/36255194/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='7.82e-03', job_status='DONE', photon_flux_upper_limit='1.00e-07', time_completed='2026-08-28 18:19:54.894191', job_id='36255194', GAL2='0.50', fit_tolerance='1e-08', EG2='1.24', EG='1.24', time_epoch_completed='1787966394.89', return_code2='101', ts='-0.00', comment='SUCCESS', return_code='0', GAL='0.50', dlogl='1.40e-08', ts2='0.00', photon_index_error='0.00', photon_index='2.54' WHERE bin_id='2199' AND source_name='4FGL J2331.3-1558' AND cadence='daily'; Database successfully updated. Analysis Complete. Fri Aug 28 18:19:54 PDT 2026 outfile=/lscratch/kocevski/36255412/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits dcostheta=0.025 binsz=1.0 phibins=0 tmin=0.0 tmax=0.0 file_version="1" zmin=0.0 zmax=90.0 chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). Working on file /lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits .....................! real 8.36 user 7.86 sys 0.23 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" scfile=/lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" expcube=/lscratch/kocevski/36255412/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255412/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits irfs="P8R3_SOURCE_V2" evtype="INDEF" srcrad=30.0 nlong=88 nlat=88 nenergies=10 submap=no nlongmin=0 nlongmax=0 nlatmin=0 nlatmax=0 chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). The exposure maps generated by this tool are meant to be used for *unbinned* likelihood analysis only. Do not use them for binned analyses. Computing the ExposureMap using /lscratch/kocevski/36255412/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits .....................! real 71.65 user 67.05 sys 4.02 Generating the xml model: radLim = 0.001 maxRad = 12 normsOnly = True freeVariableSources = True Fixing all sources to their catalog values, except variable sources Creating file and adding sources from 4FGL Added 164 point sources and 0 extended sources Setting source of interest to: 4FGL J2331.3-1558 @ 352.839 -15.9777 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits scfile=/lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255412/cmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=200000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=160 nypix=160 binsz=0.25 coordsys="CEL" xref=352.839 yref=-15.9777 axisrot=0.0 rafield="RA" decfield="DEC" proj="AIT" hpx_ordering_scheme="RING" hpx_order=3 hpx_ebin=yes hpx_region="" evtable="EVENTS" sctable="SC_DATA" efield="ENERGY" tfield="TIME" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtbin version HEAD real 51.19 user 0.24 sys 0.12 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits scfile=/lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255412/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=200000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=500 nypix=500 binsz=0.1 coordsys="CEL" xref=352.839 yref=-15.9777 axisrot=0.0 rafield="RA" decfield="DEC" proj="AIT" hpx_ordering_scheme="RING" hpx_order=3 hpx_ebin=yes hpx_region="" evtable="EVENTS" sctable="SC_DATA" efield="ENERGY" tfield="TIME" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtbin version HEAD real 0.51 user 0.24 sys 0.13 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" scfile=/lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/36255412/Model_4FGL_J2331.3-1558_daily_bin2199.xml irfs="P8R3_SOURCE_V2" evclsmin=0 evclass="INDEF" evtype="INDEF" convert=yes chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). adding source EG_v02 adding source GAL_V02 Working on... /lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits.....................! real 15.40 user 14.02 sys 1.06 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits', '/lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits', expMap='/lscratch/kocevski/36255412/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits', expCube='/lscratch/kocevski/36255412/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/36255412/Model_4FGL_J2331.3-1558_daily_bin2199.xml', optimizer='MINUIT') Using source of interest name: '4FGL J2331.3-1558' 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 2.463e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/36255412/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits Spacecraft file(s): /lscratch/kocevski/36255412/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Exposure map: /lscratch/kocevski/36255412/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits Exposure cube: /lscratch/kocevski/36255412/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/36255412/Model_4FGL_J2331.3-1558_daily_bin2199.xml Optimizer: MINUIT Statistic: UNBINNED Performing an iterative likelihood fit... Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3270.0075567 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.98344615 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' 7.5170 1.0000 .0000 .10000E+07 2 'norm ' .18247 1.0000 .0000 .10000E+07 3 'Prefactor ' .27756E-08 1.0000 .0000 .10000E+07 4 'norm ' .69274 1.0000 .0000 .10000E+07 5 'Prefactor ' .40426E-03 1.0000 .0000 .10000E+07 6 'Prefactor ' 3.2173 1.0000 .0000 .10000E+07 7 'Prefactor ' .13146E-03 1.0000 .0000 .10000E+07 8 'Prefactor ' .64562E-02 1.0000 .0000 .10000E+07 9 'Prefactor ' .18983E-03 1.0000 .0000 .10000E+07 10 'norm ' .27530E-04 1.0000 .0000 .10000E+07 11 'norm ' 12.762 1.0000 .0000 .10000E+07 12 'Prefactor ' .32475E-02 1.0000 .0000 .10000E+07 13 'norm ' .43665E-06 1.0000 .0000 .10000E+07 14 'norm ' 3.7081 1.0000 .0000 .10000E+07 15 'Prefactor ' 4.5273 1.0000 .0000 .10000E+07 16 'Normalizat' 1.2386 1.0000 .10000E-01 10.000 17 'Prefactor ' .50121 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 99 CALLS 940 TOTAL EDM= .39E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY= .6% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor 7.6305 1.2360 .19417E-07 .37655E-01 2 norm .31974E-07 27.995 .59773E-06** at limit ** 3 Prefactor .16653E-09 5.8599 .79193E-06** at limit ** 4 norm .69349 .76638 .13697E-06 -.10908E-02 5 Prefactor .28882E-06 4.7521 -.10566E-06** at limit ** 6 Prefactor 3.3382 1.0739 -.52934E-09 -.65100E-02 7 Prefactor .31519E-06 5.9505 -.58241E-06** at limit ** 8 Prefactor .24930E-06 6.0869 -.37505E-07** at limit ** 9 Prefactor .22204E-09 3.2304 -.64021E-06** at limit ** 10 norm .0000 2.4753 -.14875E-06** at limit ** 11 norm 12.738 6.2486 -.36214E-07 .70441E-02 12 Prefactor .38797E-06 7.6493 -.65933E-06** at limit ** 13 norm .0000 .39620 -.13309E-06** at limit ** 14 norm 3.6827 5.8526 -.38809E-06 .11854E-02 15 Prefactor 4.4973 3.2414 .12581E-06 .25513E-01 16 Normalizat 1.2387 .26032 .22739E-05 -.55275E-04 17 Prefactor .50121 .22559 .72322E-05 -.31638E-04 ERR DEF= .500 Final values: Prefactor = 7.63047 norm = 3.19744e-08 Prefactor = 1.66533e-10 norm = 0.693491 Prefactor = 2.88825e-07 Prefactor = 3.33822 Prefactor = 3.15192e-07 Prefactor = 2.49301e-07 Prefactor = 2.22045e-10 norm = 0 norm = 12.7382 Prefactor = 3.87967e-07 norm = 0 norm = 3.68271 Prefactor = 4.49729 Normalizat = 1.23873 Prefactor = 0.501208 ********** ** 18 **HESSE ********** FCN= 3269.980 FROM HESSE STATUS=OK 253 CALLS 1193 TOTAL EDM= .13E-06 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 7.6305 9.8536 .36555E-03 -1.5653 2 norm .31974E-07 31.912 .12097E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor .16653E-09 5.8683 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 4 norm .69349 .77180 .61299E-03 -1.5691 5 Prefactor .28882E-06 11.040 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 6 Prefactor 3.3382 12.589 .56455E-03 -1.5671 7 Prefactor .31519E-06 13.301 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 Prefactor .24930E-06 10.583 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor .22204E-09 3.2489 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 10 norm .0000 2.4852 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 12.738 6.3110 .28014E-03 -1.5637 12 Prefactor .38797E-06 13.830 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm .0000 .39493 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 14 norm 3.6827 5.9499 .52418E-03 -1.5670 15 Prefactor 4.4973 8.9780 .47291E-03 -1.5666 16 Normalizat 1.2387 .23212 .34006E-01 -.85414 17 Prefactor .50121 .19902 .62396E-01 -1.1192 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.31005e-07 Minuit parameter uncertainties: 1 9.85358 2 0.00202083 3 6.27636e-05 4 0.771801 5 0.00357133 6 12.5894 7 0.0040952 8 0.00324853 9 5.28741e-05 10 1.45631e-05 11 6.311 12 0.00463259 13 1.13531e-06 14 5.9499 15 8.97806 16 0.232316 17 0.199295 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.97997143 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 3.880e-07 4.633e-03 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 1.993e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 2.323e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): -0.00 Ra Dec: 352.839 -15.978 Photon Flux Upper Limit: 1.00272415906e-07 ph cm-2 s-1 Energy Flux Upper Limit: 0.00781961435515 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/36255412/likelihoodResults_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.txt Performing a free index iterative likelihood fit... Freezing all point sources, except source of interest... Done. Freeing candidate source... Done. Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 3270.01516359 delta logL = -0.0351921620809 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 3269.9799729 delta logL = -1.4697025108e-06 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .46796E-06 1.0000 .0000 .10000E+07 2 'Index ' 1.8099 1.0000 .0000 10.000 3 'Normalizat' 1.2383 1.0000 .10000E-01 10.000 4 'Prefactor ' .50158 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 37 CALLS 251 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 14.875 .42118E-03** at limit ** 2 Index 2.4580 1.1489 .18084E-03 .0000 3 Normalizat 1.2387 1.0946 .13152E-04 .13829E-03 4 Prefactor .50121 .84354 -.97261E-05 .16252E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 2.45798 Normalizat = 1.23873 Prefactor = 0.501209 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM HESSE STATUS=FAILED 9 CALLS 260 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 14.875 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .67957 1.8706 .18084E-03 -.53333 3 Normalizat 1.2387 1.0946 .13152E-04 -.85414 4 Prefactor .50121 .84354 -.97261E-05 -1.1192 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 4.81894e-11 Minuit parameter uncertainties: 1 8.88918e-06 2 1.16304 3 1.11597 4 0.86611 /sdf/group/fermi/u/kocevski/software/conda/envs/fermitools_v1.0.5/lib/python2.7/site-packages/pyfits/__init__.py:22: PyFITSDeprecationWarning: PyFITS is deprecated, please use astropy.io.fits PyFITSDeprecationWarning) # noqa shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 101 logL (Free Index) = 3269.97997141 delta logL = 1.39739313454e-08 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 0.000e+00 8.889e-06 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.458e+00 1.163e+00 0.000e+00 1.000e+01 (-1.000e+00) 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 8.661e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 1.116e+00 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): -0.00 Ra Dec: 352.839 -15.978 Creating a high resolution counts map... INFO: Auto-setting vmin to 0.000e+00 [aplpy.core] INFO: Auto-setting vmax to 0.000e+00 [aplpy.core] Saving /lscratch/kocevski/36255412/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='7.82e-03', job_status='DONE', photon_flux_upper_limit='1.00e-07', time_completed='2026-08-28 18:21:55.753056', job_id='36255412', GAL2='0.50', fit_tolerance='1e-08', EG2='1.24', EG='1.24', time_epoch_completed='1787966515.75', return_code2='101', ts='-0.00', comment='SUCCESS', return_code='0', GAL='0.50', dlogl='1.40e-08', ts2='0.00', photon_index_error='0.00', photon_index='2.54' WHERE bin_id='2199' AND source_name='4FGL J2331.3-1558' AND cadence='daily'; Database successfully updated. Analysis Complete. Fri Aug 28 18:21:55 PDT 2026 Likelihood Analysis Tool Support Contact: Daniel Kocevski (daniel.kocevski@nasa.gov) Importing modules... This is make3FGLxml version 01r0. The default diffuse model files and names are for pass 8 and assume you have v10r00p05 of the Fermi Science Tools or higher. This is make4FGLDR3xml version 01r09. The default diffuse model files and names are for P8R3, 4FGL DRs, and the default fermitools directory locations. WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). /sdf/group/fermi/u/kocevski/software/conda/envs/fermitools_v1.0.5/lib/python2.7/site-packages/matplotlib/cbook/deprecation.py:106: MatplotlibDeprecationWarning: The mpl_toolkits.axes_grid module was deprecated in version 2.1. Use mpl_toolkits.axes_grid1 and mpl_toolkits.axisartist provies the same functionality instead. warnings.warn(message, mplDeprecation, stacklevel=1) WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). /sdf/group/fermi/u/kocevski/software/conda/envs/fermitools_v1.0.5/lib/python2.7/site-packages/pyfits/__init__.py:22: PyFITSDeprecationWarning: PyFITS is deprecated, please use astropy.io.fits PyFITSDeprecationWarning) # noqa number of points = 7582 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. Performing analysis on: 4FGL_J2331.3-1558_daily_bin2199 RA = 352.839, Dec = -15.9777 tmin = 809308801, tmax = 809568001 emin = 100.0, emax = 100000.0 irfs = P8R3_SOURCE_V2 ROI = 12 zmax = 90 Fitting strategies: Fix sources to their catalog values = True Leave variable source normalizations free = True Perform pre-fit where ALL sources are frozen to catalog values = False Perform secondary fit with a free spectral index = True Remove all catalog sources = False Remove weak (TS < 2) catalog sources = False Freeze Galactic component = False Likelihood fit parameters: Statistic: UNBINNED Optimizer: MINUIT Catalog: 4FGL Repository job = True LAT data source: Data catalog Updating database... UPDATE lightcurve_data_v2 SET job_id='36255576', job_status='RUN', time_executed='2026-08-28 18:24:56.366869', time_epoch_executed='1787966696.37' WHERE source_name='4FGL J2331.3-1558' and cadence='daily' and bin_id='2199' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/36255576 Creating custom pfile directory: /lscratch/kocevski/36255576/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=809308801.0 && nMetStart<809568001.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=809308801.0 && nMetStart<809568001.0' /Data/Flight/Level1/LPA Retrieving 47 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/36255576/ft1_4FGL_J2331.3-1558_daily_bin2199.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=809308801.0 && nMetStart<809568001.0' /Data/Flight/Level1/LPA Retrieving 47 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/36255576/ft1_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255576/ft1_filteredMKT_4FGL_J2331.3-1558_daily_bin2199.fits ra=352.839 dec=-15.9777 rad=12.0 tmin=809308801.0 tmax=809568001.0 emin=100.0 emax=100000.0 zmin=0.0 zmax=90.0 evclass=128 evtype="INDEF" convtype=-1 phasemin=0.0 phasemax=1.0 evtable="EVENTS" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). Done. real 3.72 user 2.99 sys 0.21 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" filter="IN_SAA!=T && LIVETIME>0 && gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nogrb.gti',(START+STOP)/2) && (angsep(RA_SUN,DEC_SUN,RA_ZENITH,DEC_ZENITH)>115 || gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nosolarflares.gti',(START+STOP)/2))" roicut=no evfile=/lscratch/kocevski/36255576/ft1_filteredMKT_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" outfile="/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits" apply_filter=yes overwrite=yes header_obstimes=yes tstart=0.0 tstop=0.0 gtifile="default" chatter=3 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtmktime version HEAD Applying GTI filter: IN_SAA!=T && LIVETIME>0 && gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nogrb.gti',(START+STOP)/2) && (angsep(RA_SUN,DEC_SUN,RA_ZENITH,DEC_ZENITH)>115 || gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nosolarflares.gti',(START+STOP)/2)) real 0.61 user 0.20 sys 0.14 Number of photons that the gtmktime cut: 281 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits" evtable="EVENTS" scfile=/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" Likelihood Analysis Tool Support Contact: Daniel Kocevski (daniel.kocevski@nasa.gov) Importing modules... This is make3FGLxml version 01r0. The default diffuse model files and names are for pass 8 and assume you have v10r00p05 of the Fermi Science Tools or higher. This is make4FGLDR3xml version 01r09. The default diffuse model files and names are for P8R3, 4FGL DRs, and the default fermitools directory locations. WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). /sdf/group/fermi/u/kocevski/software/conda/envs/fermitools_v1.0.5/lib/python2.7/site-packages/matplotlib/cbook/deprecation.py:106: MatplotlibDeprecationWarning: The mpl_toolkits.axes_grid module was deprecated in version 2.1. Use mpl_toolkits.axes_grid1 and mpl_toolkits.axisartist provies the same functionality instead. warnings.warn(message, mplDeprecation, stacklevel=1) outfile=/lscratch/kocevski/36255576/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits dcostheta=0.025 binsz=1.0 phibins=0 tmin=0.0 tmax=0.0 file_version="1" zmin=0.0 zmax=90.0 chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). Working on file /lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits .....................! real 11.02 user 10.26 sys 0.22 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" scfile=/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" expcube=/lscratch/kocevski/36255576/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255576/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits irfs="P8R3_SOURCE_V2" evtype="INDEF" srcrad=30.0 nlong=88 nlat=88 nenergies=10 submap=no nlongmin=0 nlongmax=0 nlatmin=0 nlatmax=0 chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). The exposure maps generated by this tool are meant to be used for *unbinned* likelihood analysis only. Do not use them for binned analyses. Computing the ExposureMap using /lscratch/kocevski/36255576/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits .....................! real 70.05 user 64.57 sys 3.95 Generating the xml model: radLim = 0.001 maxRad = 12 normsOnly = True freeVariableSources = True Fixing all sources to their catalog values, except variable sources Creating file and adding sources from 4FGL Added 164 point sources and 0 extended sources Setting source of interest to: 4FGL J2331.3-1558 @ 352.839 -15.9777 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits scfile=/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255576/cmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=200000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=160 nypix=160 binsz=0.25 coordsys="CEL" xref=352.839 yref=-15.9777 axisrot=0.0 rafield="RA" decfield="DEC" proj="AIT" hpx_ordering_scheme="RING" hpx_order=3 hpx_ebin=yes hpx_region="" evtable="EVENTS" sctable="SC_DATA" efield="ENERGY" tfield="TIME" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtbin version HEAD real 23.45 user 0.21 sys 0.20 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits scfile=/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255576/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=200000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=500 nypix=500 binsz=0.1 coordsys="CEL" xref=352.839 yref=-15.9777 axisrot=0.0 rafield="RA" decfield="DEC" proj="AIT" hpx_ordering_scheme="RING" hpx_order=3 hpx_ebin=yes hpx_region="" evtable="EVENTS" sctable="SC_DATA" efield="ENERGY" tfield="TIME" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtbin version HEAD real 0.65 user 0.21 sys 0.16 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" scfile=/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/36255576/Model_4FGL_J2331.3-1558_daily_bin2199.xml irfs="P8R3_SOURCE_V2" evclsmin=0 evclass="INDEF" evtype="INDEF" convert=yes chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). adding source EG_v02 adding source GAL_V02 Working on... /lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits.....................! real 60.68 user 14.29 sys 3.07 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits', '/lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits', expMap='/lscratch/kocevski/36255576/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits', expCube='/lscratch/kocevski/36255576/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/36255576/Model_4FGL_J2331.3-1558_daily_bin2199.xml', optimizer='MINUIT') Using source of interest name: '4FGL J2331.3-1558' 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 2.463e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/36255576/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits Spacecraft file(s): /lscratch/kocevski/36255576/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Exposure map: /lscratch/kocevski/36255576/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits Exposure cube: /lscratch/kocevski/36255576/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/36255576/Model_4FGL_J2331.3-1558_daily_bin2199.xml Optimizer: MINUIT Statistic: UNBINNED Performing an iterative likelihood fit... Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3270.0075567 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.98344615 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' 7.5170 1.0000 .0000 .10000E+07 2 'norm ' .18247 1.0000 .0000 .10000E+07 3 'Prefactor ' .27756E-08 1.0000 .0000 .10000E+07 4 'norm ' .69274 1.0000 .0000 .10000E+07 5 'Prefactor ' .40426E-03 1.0000 .0000 .10000E+07 6 'Prefactor ' 3.2173 1.0000 .0000 .10000E+07 7 'Prefactor ' .13146E-03 1.0000 .0000 .10000E+07 8 'Prefactor ' .64562E-02 1.0000 .0000 .10000E+07 9 'Prefactor ' .18983E-03 1.0000 .0000 .10000E+07 10 'norm ' .27530E-04 1.0000 .0000 .10000E+07 11 'norm ' 12.762 1.0000 .0000 .10000E+07 12 'Prefactor ' .32475E-02 1.0000 .0000 .10000E+07 13 'norm ' .43665E-06 1.0000 .0000 .10000E+07 14 'norm ' 3.7081 1.0000 .0000 .10000E+07 15 'Prefactor ' 4.5273 1.0000 .0000 .10000E+07 16 'Normalizat' 1.2386 1.0000 .10000E-01 10.000 17 'Prefactor ' .50121 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 99 CALLS 940 TOTAL EDM= .39E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY= .6% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor 7.6305 1.2360 .19417E-07 .37655E-01 2 norm .31974E-07 27.995 .59773E-06** at limit ** 3 Prefactor .16653E-09 5.8599 .79193E-06** at limit ** 4 norm .69349 .76638 .13697E-06 -.10908E-02 5 Prefactor .28882E-06 4.7521 -.10566E-06** at limit ** 6 Prefactor 3.3382 1.0739 -.52934E-09 -.65100E-02 7 Prefactor .31519E-06 5.9505 -.58241E-06** at limit ** 8 Prefactor .24930E-06 6.0869 -.37505E-07** at limit ** 9 Prefactor .22204E-09 3.2304 -.64021E-06** at limit ** 10 norm .0000 2.4753 -.14875E-06** at limit ** 11 norm 12.738 6.2486 -.36214E-07 .70441E-02 12 Prefactor .38797E-06 7.6493 -.65933E-06** at limit ** 13 norm .0000 .39620 -.13309E-06** at limit ** 14 norm 3.6827 5.8526 -.38809E-06 .11854E-02 15 Prefactor 4.4973 3.2414 .12581E-06 .25513E-01 16 Normalizat 1.2387 .26032 .22739E-05 -.55275E-04 17 Prefactor .50121 .22559 .72322E-05 -.31638E-04 ERR DEF= .500 Final values: Prefactor = 7.63047 norm = 3.19744e-08 Prefactor = 1.66533e-10 norm = 0.693491 Prefactor = 2.88825e-07 Prefactor = 3.33822 Prefactor = 3.15192e-07 Prefactor = 2.49301e-07 Prefactor = 2.22045e-10 norm = 0 norm = 12.7382 Prefactor = 3.87967e-07 norm = 0 norm = 3.68271 Prefactor = 4.49729 Normalizat = 1.23873 Prefactor = 0.501208 ********** ** 18 **HESSE ********** FCN= 3269.980 FROM HESSE STATUS=OK 253 CALLS 1193 TOTAL EDM= .13E-06 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 7.6305 9.8536 .36555E-03 -1.5653 2 norm .31974E-07 31.912 .12097E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor .16653E-09 5.8683 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 4 norm .69349 .77180 .61299E-03 -1.5691 5 Prefactor .28882E-06 11.040 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 6 Prefactor 3.3382 12.589 .56455E-03 -1.5671 7 Prefactor .31519E-06 13.301 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 Prefactor .24930E-06 10.583 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor .22204E-09 3.2489 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 10 norm .0000 2.4852 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 12.738 6.3110 .28014E-03 -1.5637 12 Prefactor .38797E-06 13.830 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm .0000 .39493 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 14 norm 3.6827 5.9499 .52418E-03 -1.5670 15 Prefactor 4.4973 8.9780 .47291E-03 -1.5666 16 Normalizat 1.2387 .23212 .34006E-01 -.85414 17 Prefactor .50121 .19902 .62396E-01 -1.1192 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.31005e-07 Minuit parameter uncertainties: 1 9.85358 2 0.00202083 3 6.27636e-05 4 0.771801 5 0.00357133 6 12.5894 7 0.0040952 8 0.00324853 9 5.28741e-05 10 1.45631e-05 11 6.311 12 0.00463259 13 1.13531e-06 14 5.9499 15 8.97806 16 0.232316 17 0.199295 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.97997143 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 3.880e-07 4.633e-03 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 1.993e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 2.323e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): -0.00 Ra Dec: 352.839 -15.978 Photon Flux Upper Limit: 1.00272415906e-07 ph cm-2 s-1 Energy Flux Upper Limit: 0.00781961435515 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/36255576/likelihoodResults_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.txt Performing a free index iterative likelihood fit... Freezing all point sources, except source of interest... Done. Freeing candidate source... Done. Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 3270.01516359 delta logL = -0.0351921620809 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 3269.9799729 delta logL = -1.4697025108e-06 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .46796E-06 1.0000 .0000 .10000E+07 2 'Index ' 1.8099 1.0000 .0000 10.000 3 'Normalizat' 1.2383 1.0000 .10000E-01 10.000 4 'Prefactor ' .50158 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 37 CALLS 251 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 14.875 .42118E-03** at limit ** 2 Index 2.4580 1.1489 .18084E-03 .0000 3 Normalizat 1.2387 1.0946 .13152E-04 .13829E-03 4 Prefactor .50121 .84354 -.97261E-05 .16252E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 2.45798 Normalizat = 1.23873 Prefactor = 0.501209 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM HESSE STATUS=FAILED 9 CALLS 260 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 14.875 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .67957 1.8706 .18084E-03 -.53333 3 Normalizat 1.2387 1.0946 .13152E-04 -.85414 4 Prefactor .50121 .84354 -.97261E-05 -1.1192 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 4.81894e-11 Minuit parameter uncertainties: 1 8.88918e-06 2 1.16304 3 1.11597 4 0.86611 shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 101 logL (Free Index) = 3269.97997141 delta logL = 1.39739313454e-08 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 0.000e+00 8.889e-06 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.458e+00 1.163e+00 0.000e+00 1.000e+01 (-1.000e+00) 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 8.661e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 1.116e+00 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): -0.00 Ra Dec: 352.839 -15.978 Creating a high resolution counts map... INFO: Auto-setting vmin to 0.000e+00 [aplpy.core] INFO: Auto-setting vmax to 0.000e+00 [aplpy.core] Saving /lscratch/kocevski/36255576/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='7.82e-03', job_status='DONE', photon_flux_upper_limit='1.00e-07', time_completed='2026-08-28 18:29:54.158169', job_id='36255576', GAL2='0.50', fit_tolerance='1e-08', EG2='1.24', EG='1.24', time_epoch_completed='1787966994.16', return_code2='101', ts='-0.00', comment='SUCCESS', return_code='0', GAL='0.50', dlogl='1.40e-08', ts2='0.00', photon_index_error='0.00', photon_index='2.54' WHERE bin_id='2199' AND source_name='4FGL J2331.3-1558' AND cadence='daily'; Database successfully updated. Analysis Complete. Fri Aug 28 18:29:54 PDT 2026 WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). number of points = 7582 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. Performing analysis on: 4FGL_J2331.3-1558_daily_bin2199 RA = 352.839, Dec = -15.9777 tmin = 809308801, tmax = 809568001 emin = 100.0, emax = 100000.0 irfs = P8R3_SOURCE_V2 ROI = 12 zmax = 90 Fitting strategies: Fix sources to their catalog values = True Leave variable source normalizations free = True Perform pre-fit where ALL sources are frozen to catalog values = False Perform secondary fit with a free spectral index = True Remove all catalog sources = False Remove weak (TS < 2) catalog sources = False Freeze Galactic component = False Likelihood fit parameters: Statistic: UNBINNED Optimizer: MINUIT Catalog: 4FGL Repository job = True LAT data source: Data catalog Updating database... UPDATE lightcurve_data_v2 SET job_id='36255468', job_status='RUN', time_executed='2026-08-28 18:40:01.214767', time_epoch_executed='1787967601.21' WHERE source_name='4FGL J2331.3-1558' and cadence='daily' and bin_id='2199' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/36255468 Creating custom pfile directory: /lscratch/kocevski/36255468/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=809308801.0 && nMetStart<809568001.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=809308801.0 && nMetStart<809568001.0' /Data/Flight/Level1/LPA Retrieving 47 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/36255468/ft1_4FGL_J2331.3-1558_daily_bin2199.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=809308801.0 && nMetStart<809568001.0' /Data/Flight/Level1/LPA Retrieving 47 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/36255468/ft1_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255468/ft1_filteredMKT_4FGL_J2331.3-1558_daily_bin2199.fits ra=352.839 dec=-15.9777 rad=12.0 tmin=809308801.0 tmax=809568001.0 emin=100.0 emax=100000.0 zmin=0.0 zmax=90.0 evclass=128 evtype="INDEF" convtype=-1 phasemin=0.0 phasemax=1.0 evtable="EVENTS" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). Done. real 4.14 user 3.31 sys 0.19 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" filter="IN_SAA!=T && LIVETIME>0 && gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nogrb.gti',(START+STOP)/2) && (angsep(RA_SUN,DEC_SUN,RA_ZENITH,DEC_ZENITH)>115 || gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nosolarflares.gti',(START+STOP)/2))" roicut=no evfile=/lscratch/kocevski/36255468/ft1_filteredMKT_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" outfile="/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits" apply_filter=yes overwrite=yes header_obstimes=yes tstart=0.0 tstop=0.0 gtifile="default" chatter=3 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtmktime version HEAD Applying GTI filter: IN_SAA!=T && LIVETIME>0 && gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nogrb.gti',(START+STOP)/2) && (angsep(RA_SUN,DEC_SUN,RA_ZENITH,DEC_ZENITH)>115 || gtifilter('/sdf/group/fermi/g/LCRepository/Likelihood/GTIs/nosolarflares.gti',(START+STOP)/2)) real 1.12 user 0.23 sys 0.12 Number of photons that the gtmktime cut: 281 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits" evtable="EVENTS" scfile=/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" outfile=/lscratch/kocevski/36255468/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits dcostheta=0.025 binsz=1.0 phibins=0 tmin=0.0 tmax=0.0 file_version="1" zmin=0.0 zmax=90.0 chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). Working on file /lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits .....................! real 10.20 user 9.11 sys 0.20 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" scfile=/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" expcube=/lscratch/kocevski/36255468/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255468/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits irfs="P8R3_SOURCE_V2" evtype="INDEF" srcrad=30.0 nlong=88 nlat=88 nenergies=10 submap=no nlongmin=0 nlongmax=0 nlatmin=0 nlatmax=0 chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). The exposure maps generated by this tool are meant to be used for *unbinned* likelihood analysis only. Do not use them for binned analyses. Computing the ExposureMap using /lscratch/kocevski/36255468/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits .....................! real 85.57 user 75.98 sys 4.38 Generating the xml model: radLim = 0.001 maxRad = 12 normsOnly = True freeVariableSources = True Fixing all sources to their catalog values, except variable sources Creating file and adding sources from 4FGL Added 164 point sources and 0 extended sources Setting source of interest to: 4FGL J2331.3-1558 @ 352.839 -15.9777 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits scfile=/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255468/cmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=200000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=160 nypix=160 binsz=0.25 coordsys="CEL" xref=352.839 yref=-15.9777 axisrot=0.0 rafield="RA" decfield="DEC" proj="AIT" hpx_ordering_scheme="RING" hpx_order=3 hpx_ebin=yes hpx_region="" evtable="EVENTS" sctable="SC_DATA" efield="ENERGY" tfield="TIME" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtbin version HEAD real 1.18 user 0.24 sys 0.12 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits scfile=/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits outfile=/lscratch/kocevski/36255468/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=200000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=500 nypix=500 binsz=0.1 coordsys="CEL" xref=352.839 yref=-15.9777 axisrot=0.0 rafield="RA" decfield="DEC" proj="AIT" hpx_ordering_scheme="RING" hpx_order=3 hpx_ebin=yes hpx_region="" evtable="EVENTS" sctable="SC_DATA" efield="ENERGY" tfield="TIME" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). This is gtbin version HEAD real 0.89 user 0.25 sys 0.13 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits evtable="EVENTS" scfile=/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/36255468/Model_4FGL_J2331.3-1558_daily_bin2199.xml irfs="P8R3_SOURCE_V2" evclsmin=0 evclass="INDEF" evtype="INDEF" convert=yes chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). adding source EG_v02 adding source GAL_V02 Working on... /lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits.....................! real 17.73 user 15.84 sys 0.70 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits', '/lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits', expMap='/lscratch/kocevski/36255468/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits', expCube='/lscratch/kocevski/36255468/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/36255468/Model_4FGL_J2331.3-1558_daily_bin2199.xml', optimizer='MINUIT') Using source of interest name: '4FGL J2331.3-1558' 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 2.463e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/36255468/ft1_filtered_4FGL_J2331.3-1558_daily_bin2199.fits Spacecraft file(s): /lscratch/kocevski/36255468/ft2_4FGL_J2331.3-1558_daily_bin2199.fits Exposure map: /lscratch/kocevski/36255468/expmap_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits Exposure cube: /lscratch/kocevski/36255468/ltcube_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/36255468/Model_4FGL_J2331.3-1558_daily_bin2199.xml Optimizer: MINUIT Statistic: UNBINNED Performing an iterative likelihood fit... Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3270.0075567 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.98344615 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' 7.5170 1.0000 .0000 .10000E+07 2 'norm ' .18247 1.0000 .0000 .10000E+07 3 'Prefactor ' .27756E-08 1.0000 .0000 .10000E+07 4 'norm ' .69274 1.0000 .0000 .10000E+07 5 'Prefactor ' .40426E-03 1.0000 .0000 .10000E+07 6 'Prefactor ' 3.2173 1.0000 .0000 .10000E+07 7 'Prefactor ' .13146E-03 1.0000 .0000 .10000E+07 8 'Prefactor ' .64562E-02 1.0000 .0000 .10000E+07 9 'Prefactor ' .18983E-03 1.0000 .0000 .10000E+07 10 'norm ' .27530E-04 1.0000 .0000 .10000E+07 11 'norm ' 12.762 1.0000 .0000 .10000E+07 12 'Prefactor ' .32475E-02 1.0000 .0000 .10000E+07 13 'norm ' .43665E-06 1.0000 .0000 .10000E+07 14 'norm ' 3.7081 1.0000 .0000 .10000E+07 15 'Prefactor ' 4.5273 1.0000 .0000 .10000E+07 16 'Normalizat' 1.2386 1.0000 .10000E-01 10.000 17 'Prefactor ' .50121 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 99 CALLS 940 TOTAL EDM= .39E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY= .6% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor 7.6305 1.2360 .19417E-07 .37655E-01 2 norm .31974E-07 27.995 .59773E-06** at limit ** 3 Prefactor .16653E-09 5.8599 .79193E-06** at limit ** 4 norm .69349 .76638 .13697E-06 -.10908E-02 5 Prefactor .28882E-06 4.7521 -.10566E-06** at limit ** 6 Prefactor 3.3382 1.0739 -.52934E-09 -.65100E-02 7 Prefactor .31519E-06 5.9505 -.58241E-06** at limit ** 8 Prefactor .24930E-06 6.0869 -.37505E-07** at limit ** 9 Prefactor .22204E-09 3.2304 -.64021E-06** at limit ** 10 norm .0000 2.4753 -.14875E-06** at limit ** 11 norm 12.738 6.2486 -.36214E-07 .70441E-02 12 Prefactor .38797E-06 7.6493 -.65933E-06** at limit ** 13 norm .0000 .39620 -.13309E-06** at limit ** 14 norm 3.6827 5.8526 -.38809E-06 .11854E-02 15 Prefactor 4.4973 3.2414 .12581E-06 .25513E-01 16 Normalizat 1.2387 .26032 .22739E-05 -.55275E-04 17 Prefactor .50121 .22559 .72322E-05 -.31638E-04 ERR DEF= .500 Final values: Prefactor = 7.63047 norm = 3.19744e-08 Prefactor = 1.66533e-10 norm = 0.693491 Prefactor = 2.88825e-07 Prefactor = 3.33822 Prefactor = 3.15192e-07 Prefactor = 2.49301e-07 Prefactor = 2.22045e-10 norm = 0 norm = 12.7382 Prefactor = 3.87967e-07 norm = 0 norm = 3.68271 Prefactor = 4.49729 Normalizat = 1.23873 Prefactor = 0.501208 ********** ** 18 **HESSE ********** FCN= 3269.980 FROM HESSE STATUS=OK 253 CALLS 1193 TOTAL EDM= .13E-06 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 7.6305 9.8536 .36555E-03 -1.5653 2 norm .31974E-07 31.912 .12097E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor .16653E-09 5.8683 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 4 norm .69349 .77180 .61299E-03 -1.5691 5 Prefactor .28882E-06 11.040 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 6 Prefactor 3.3382 12.589 .56455E-03 -1.5671 7 Prefactor .31519E-06 13.301 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 Prefactor .24930E-06 10.583 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor .22204E-09 3.2489 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 10 norm .0000 2.4852 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 12.738 6.3110 .28014E-03 -1.5637 12 Prefactor .38797E-06 13.830 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm .0000 .39493 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 14 norm 3.6827 5.9499 .52418E-03 -1.5670 15 Prefactor 4.4973 8.9780 .47291E-03 -1.5666 16 Normalizat 1.2387 .23212 .34006E-01 -.85414 17 Prefactor .50121 .19902 .62396E-01 -1.1192 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.31005e-07 Minuit parameter uncertainties: 1 9.85358 2 0.00202083 3 6.27636e-05 4 0.771801 5 0.00357133 6 12.5894 7 0.0040952 8 0.00324853 9 5.28741e-05 10 1.45631e-05 11 6.311 12 0.00463259 13 1.13531e-06 14 5.9499 15 8.97806 16 0.232316 17 0.199295 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 3269.97997143 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 3.880e-07 4.633e-03 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.542e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 1.993e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 2.323e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): -0.00 Ra Dec: 352.839 -15.978 Photon Flux Upper Limit: 1.00272415906e-07 ph cm-2 s-1 Energy Flux Upper Limit: 0.00781961435515 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/36255468/likelihoodResults_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.txt Performing a free index iterative likelihood fit... Freezing all point sources, except source of interest... Done. Freeing candidate source... Done. Fit tolerance = 1 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 3270.01516359 delta logL = -0.0351921620809 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 3269.9799729 delta logL = -1.4697025108e-06 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .46796E-06 1.0000 .0000 .10000E+07 2 'Index ' 1.8099 1.0000 .0000 10.000 3 'Normalizat' 1.2383 1.0000 .10000E-01 10.000 4 'Prefactor ' .50158 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5340E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM MIGRAD STATUS=CONVERGED 37 CALLS 251 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 14.875 .42118E-03** at limit ** 2 Index 2.4580 1.1489 .18084E-03 .0000 3 Normalizat 1.2387 1.0946 .13152E-04 .13829E-03 4 Prefactor .50121 .84354 -.97261E-05 .16252E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 2.45798 Normalizat = 1.23873 Prefactor = 0.501209 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 3269.980 FROM HESSE STATUS=FAILED 9 CALLS 260 TOTAL EDM= .48E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 14.875 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .67957 1.8706 .18084E-03 -.53333 3 Normalizat 1.2387 1.0946 .13152E-04 -.85414 4 Prefactor .50121 .84354 -.97261E-05 -1.1192 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 4.81894e-11 Minuit parameter uncertainties: 1 8.88918e-06 2 1.16304 3 1.11597 4 0.86611 shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 101 logL (Free Index) = 3269.97997141 delta logL = 1.39739313454e-08 Extracting fit parameters... 4FGL J2331.3-1558 Spectrum: PowerLaw 425 Prefactor: 0.000e+00 8.889e-06 0.000e+00 1.000e+06 ( 1.000e-13) 426 Index: 2.458e+00 1.163e+00 0.000e+00 1.000e+01 (-1.000e+00) 427 Scale: 1.004e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 531 Prefactor: 5.012e-01 8.661e-01 0.000e+00 1.000e+01 ( 1.000e+00) 532 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 533 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 530 Normalization: 1.239e+00 1.116e+00 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): -0.00 Ra Dec: 352.839 -15.978 Creating a high resolution counts map... INFO: Auto-setting vmin to 0.000e+00 [aplpy.core] INFO: Auto-setting vmax to 0.000e+00 [aplpy.core] Saving /lscratch/kocevski/36255468/cmap_HighResolution_809308801_809568001_4FGL_J2331.3-1558_daily_bin2199.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='7.82e-03', job_status='DONE', photon_flux_upper_limit='1.00e-07', time_completed='2026-08-28 18:44:41.747399', job_id='36255468', GAL2='0.50', fit_tolerance='1e-08', EG2='1.24', EG='1.24', time_epoch_completed='1787967881.75', return_code2='101', ts='-0.00', comment='SUCCESS', return_code='0', GAL='0.50', dlogl='1.40e-08', ts2='0.00', photon_index_error='0.00', photon_index='2.54' WHERE bin_id='2199' AND source_name='4FGL J2331.3-1558' AND cadence='daily'; Database successfully updated. Analysis Complete. Fri Aug 28 18:44:41 PDT 2026