/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 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). number of points = 17150 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. Performing analysis on: 4FGL_J1521.8+4338_weekly_bin926 RA = 230.464, Dec = 43.6344 tmin = 799027201, tmax = 799632001 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='26196302', job_status='RUN', time_executed='2026-05-05 01:24:27.809910', time_epoch_executed='1777969467.81' WHERE source_name='4FGL J1521.8+4338' and cadence='weekly' and bin_id='926' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/26196302 Creating custom pfile directory: /lscratch/kocevski/26196302/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=799027201.0 && nMetStart<799632001.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=799027201.0 && nMetStart<799632001.0' /Data/Flight/Level1/LPA Retrieving 107 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/26196302/ft1_4FGL_J1521.8+4338_weekly_bin926.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=799027201.0 && nMetStart<799632001.0' /Data/Flight/Level1/LPA Retrieving 107 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/26196302/ft1_4FGL_J1521.8+4338_weekly_bin926.fits outfile=/lscratch/kocevski/26196302/ft1_filteredMKT_4FGL_J1521.8+4338_weekly_bin926.fits ra=230.464 dec=43.6344 rad=12.0 tmin=799027201.0 tmax=799632001.0 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 4.10 user 3.60 sys 0.22 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.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/26196302/ft1_filteredMKT_4FGL_J1521.8+4338_weekly_bin926.fits evtable="EVENTS" outfile="/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.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 0.66 user 0.26 sys 0.13 Number of photons that the gtmktime cut: 2146 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits" evtable="EVENTS" scfile=/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits sctable="SC_DATA" outfile=/lscratch/kocevski/26196302/ltcube_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.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/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits .....................! real 23.75 user 22.94 sys 0.27 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits evtable="EVENTS" scfile=/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits sctable="SC_DATA" expcube=/lscratch/kocevski/26196302/ltcube_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.fits outfile=/lscratch/kocevski/26196302/expmap_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.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/26196302/ltcube_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.fits .....................! real 65.28 user 61.05 sys 3.63 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 196 point sources and 0 extended sources Setting source of interest to: 4FGL J1521.8+4338 @ 230.464 43.6344 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits scfile=/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits outfile=/lscratch/kocevski/26196302/cmap_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.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=230.464 yref=43.6344 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 0.62 user 0.22 sys 0.13 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits scfile=/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits outfile=/lscratch/kocevski/26196302/cmap_HighResolution_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.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=230.464 yref=43.6344 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 0.69 user 0.22 sys 0.13 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits evtable="EVENTS" scfile=/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/26196302/Model_4FGL_J1521.8+4338_weekly_bin926.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/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits.....................! real 57.65 user 55.94 sys 1.06 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits', '/lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits', expMap='/lscratch/kocevski/26196302/expmap_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.fits', expCube='/lscratch/kocevski/26196302/ltcube_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/26196302/Model_4FGL_J1521.8+4338_weekly_bin926.xml', optimizer='MINUIT') Using source of interest name: '4FGL J1521.8+4338' 4FGL J1521.8+4338 Spectrum: PowerLaw 310 Prefactor: 3.344e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-12) 311 Index: 2.936e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 312 Scale: 4.193e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/26196302/ft1_filtered_4FGL_J1521.8+4338_weekly_bin926.fits Spacecraft file(s): /lscratch/kocevski/26196302/ft2_4FGL_J1521.8+4338_weekly_bin926.fits Exposure map: /lscratch/kocevski/26196302/expmap_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.fits Exposure cube: /lscratch/kocevski/26196302/ltcube_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/26196302/Model_4FGL_J1521.8+4338_weekly_bin926.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) = 23515.2004702 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 23515.0153645 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .54884E-06 1.0000 .0000 .10000E+07 2 'Prefactor ' .41767E-06 1.0000 .0000 .10000E+07 3 'norm ' 1.7195 1.0000 .0000 .10000E+07 4 'Prefactor ' .74707E-06 1.0000 .0000 .10000E+07 5 'norm ' .0000 1.0000 .0000 .10000E+07 6 'Prefactor ' 31.573 1.0000 .0000 .10000E+07 7 'norm ' 2.5628 1.0000 .0000 .10000E+07 8 'Prefactor ' .82119E-01 1.0000 .0000 .10000E+07 9 'Prefactor ' 4.0911 1.0000 .0000 .10000E+07 10 'norm ' .82456 1.0000 .0000 .10000E+07 11 'norm ' .64688 1.0000 .0000 .10000E+07 12 'Prefactor ' .12078E-05 1.0000 .0000 .10000E+07 13 'Prefactor ' 25.563 1.0000 .0000 .10000E+07 14 'Prefactor ' 9.2780 1.0000 .0000 .10000E+07 15 'Prefactor ' .15288E-01 1.0000 .0000 .10000E+07 16 'norm ' 5.2000 1.0000 .0000 .10000E+07 17 'norm ' 22.372 1.0000 .0000 .10000E+07 18 'Prefactor ' .28810E-07 1.0000 .0000 .10000E+07 19 'Prefactor ' 31.692 1.0000 .0000 .10000E+07 20 'Prefactor ' .17620E-05 1.0000 .0000 .10000E+07 21 'Prefactor ' 14.038 1.0000 .0000 .10000E+07 22 'Prefactor ' .62033E-01 1.0000 .0000 .10000E+07 23 'Normalizat' 1.1791 1.0000 .10000E-01 10.000 24 'Prefactor ' .77719 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .6290E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 23515.02 FROM MIGRAD STATUS=CONVERGED 109 CALLS 2035 TOTAL EDM= .17E-08 STRATEGY=1 ERROR MATRIX UNCERTAINTY= 1.8% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .55511E-09 2.6029 .71888E-06** at limit ** 2 Prefactor .27756E-09 9.5682 .23213E-05** at limit ** 3 norm 1.7242 3.1662 .86671E-06 .78918E-03 4 Prefactor .81601E-08 8.3352 .10300E-05** at limit ** 5 norm .0000 .99407 .12449E-06** at limit ** 6 Prefactor 31.565 1.0180 .11634E-07 -.35491E-01 7 norm 2.5627 .71165 .80348E-08 -.15553E-01 8 Prefactor .10208 .53087 .16036E-07** at limit ** 9 Prefactor 4.0917 2.2337 -.11064E-06 -.16426E-02 10 norm .82339 .72243 -.45950E-07 .32728E-02 11 norm .64875 1.0008 -.39074E-06 .19405E-01 12 Prefactor .27645E-07 3.1326 .28311E-06** at limit ** 13 Prefactor 25.578 1.0279 .23324E-08 .32114E-01 14 Prefactor 9.2956 1.3687 -.81090E-07 -.37857E-01 15 Prefactor .10547E-07 .80835 -.14304E-06** at limit ** 16 norm 5.2001 1.1620 -.14439E-07 -.18249E-02 17 norm 22.371 1.0745 .11328E-07 -.78352E-01 18 Prefactor .27756E-09 1.9332 -.37549E-07** at limit ** 19 Prefactor 31.707 1.0035 -.30147E-08 .42505E-02 20 Prefactor .83267E-09 1.6808 -.65558E-06** at limit ** 21 Prefactor 14.039 3.2620 -.15299E-07 -.11176 22 Prefactor .72249E-01 11.409 .12854E-05** at limit ** 23 Normalizat 1.1792 .10245 -.19069E-05 -.12349E-02 24 Prefactor .77713 .10516 .77673E-05 -.67536E-03 ERR DEF= .500 Final values: Prefactor = 5.55112e-10 Prefactor = 2.77556e-10 norm = 1.72424 Prefactor = 8.16014e-09 norm = 0 Prefactor = 31.5653 norm = 2.56273 Prefactor = 0.102085 Prefactor = 4.09168 norm = 0.823392 norm = 0.648751 Prefactor = 2.76446e-08 Prefactor = 25.578 Prefactor = 9.29557 Prefactor = 1.05471e-08 norm = 5.20006 norm = 22.3708 Prefactor = 2.77556e-10 Prefactor = 31.7072 Prefactor = 8.32667e-10 Prefactor = 14.0391 Prefactor = 0.0722487 Normalizat = 1.1792 Prefactor = 0.777133 ********** ** 18 **HESSE ********** FCN= 23515.02 FROM HESSE STATUS=OK 471 CALLS 2506 TOTAL EDM= .16E-06 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .55511E-09 2.6787 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Prefactor .27756E-09 9.5531 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 norm 1.7242 3.1864 .80087E-03 -1.5682 4 Prefactor .81601E-08 8.2973 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 5 norm .0000 .99874 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 6 Prefactor 31.565 9.9092 .17799E-03 -1.5596 7 norm 2.5627 .71257 .63742E-03 -1.5676 8 Prefactor .10208 1.2518 .93095E-02 -1.5702 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor 4.0917 2.2454 .49820E-03 -1.5668 10 norm .82339 .79087 .51122E-03 -1.5690 11 norm .64875 1.0343 .65130E-03 -1.5692 12 Prefactor .27645E-07 3.4395 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 Prefactor 25.578 26.003 .19782E-03 -1.5607 14 Prefactor 9.2956 7.5775 .32878E-03 -1.5647 15 Prefactor .10547E-07 1.5004 .12061E-01 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 16 norm 5.2001 1.1638 .44059E-03 -1.5662 17 norm 22.371 7.8335 .21148E-03 -1.5613 18 Prefactor .27756E-09 1.9480 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 19 Prefactor 31.707 26.978 .17766E-03 -1.5595 20 Prefactor .83267E-09 1.6744 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 21 Prefactor 14.039 8.9219 .26707E-03 -1.5633 22 Prefactor .72249E-01 .56019 .74408E-02 -1.5703 WARNING - - ABOVE PARAMETER IS AT LIMIT. 23 Normalizat 1.1792 .89888E-01 .35425E-01 -.87248 24 Prefactor .77713 .90585E-01 .62411E-01 -1.0058 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.58174e-07 Minuit parameter uncertainties: 1 7.83049e-05 2 0.0001028 3 3.18638 4 0.000520092 5 5.15127e-06 6 9.9092 7 0.712569 8 0.714962 9 2.24545 10 0.790874 11 1.03429 12 0.000616473 13 26.0034 14 7.57751 15 0.000251887 16 1.16383 17 7.8335 18 4.75551e-05 19 26.9776 20 7.44102e-05 21 8.92195 22 0.40236 23 0.0899002 24 0.0906018 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 23515.0151431 Extracting fit parameters... 4FGL J1521.8+4338 Spectrum: PowerLaw 310 Prefactor: 1.055e-08 2.519e-04 0.000e+00 1.000e+06 ( 1.000e-12) 311 Index: 2.936e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 312 Scale: 4.193e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 626 Prefactor: 7.771e-01 9.060e-02 0.000e+00 1.000e+01 ( 1.000e+00) 627 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 628 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 625 Normalization: 1.179e+00 8.990e-02 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): -0.00 Ra Dec: 230.464 43.634 Photon Flux Upper Limit: 4.0985367889e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.0032681826301 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/26196302/likelihoodResults_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.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) = 23514.7292503 delta logL = 0.285892860258 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 23514.6814714 delta logL = 0.333671725359 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .42872E-01 1.0000 .0000 .10000E+07 2 'Index ' 7.1507 1.0000 .0000 10.000 3 'Normalizat' 1.1528 1.0000 .10000E-01 10.000 4 'Prefactor ' .79515 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .6290E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. FCN= 23514.68 FROM MIGRAD STATUS=CONVERGED 61 CALLS 298 TOTAL EDM= .26E-08 STRATEGY= 1 ERR MATRIX NOT POS-DEF EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .42105E-01 .25545 .84235E-03** at limit ** 2 Index 7.1643 2.5146 .35129 .21641E-03 3 Normalizat 1.1529 .98255E-02 .36169E-01 .18214E-04 4 Prefactor .79505 .10261E-01 .43654E-01 .67605E-04 ERR DEF= .500 Final values: Prefactor = 0.0421047 Index = 7.16427 Normalizat = 1.15291 Prefactor = 0.795048 ********** ** 18 **HESSE ********** FCN= 23514.68 FROM HESSE STATUS=NOT POSDEF 35 CALLS 333 TOTAL EDM= .26E-07 STRATEGY= 1 ERR MATRIX NOT POS-DEF EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .42105E-01 2.9906 .33250E-04 -1.5704 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index 7.1643 7.7642 .19469E-01 .44766 3 Normalizat 1.1529 .54539E-01 .22240E-03 -.88071 4 Prefactor .79505 .56057E-01 .27304E-03 -.99911 ERR DEF= .500 Minuit fit quality: 2 estimated distance: 2.57465e-08 Minuit parameter uncertainties: 1 0.7097 2 12.8514 3 0.0545417 4 0.0560611 shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 23514.6814679 delta logL = 0.333675264712 Extracting fit parameters... 4FGL J1521.8+4338 Spectrum: PowerLaw 310 Prefactor: 4.210e-02 7.097e-01 0.000e+00 1.000e+06 ( 1.000e-12) 311 Index: 7.164e+00 1.285e+01 0.000e+00 1.000e+01 (-1.000e+00) 312 Scale: 4.193e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 626 Prefactor: 7.950e-01 5.606e-02 0.000e+00 1.000e+01 ( 1.000e+00) 627 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 628 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 625 Normalization: 1.153e+00 5.454e-02 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): -0.00 Ra Dec: 230.464 43.634 Creating a high resolution counts map... INFO: Auto-setting vmin to -1.000e-01 [aplpy.core] INFO: Auto-setting vmax to 1.110e+00 [aplpy.core] Saving /lscratch/kocevski/26196302/cmap_HighResolution_799027201_799632001_4FGL_J1521.8+4338_weekly_bin926.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='3.27e-03', job_status='DONE', photon_flux_upper_limit='4.10e-08', time_completed='2026-05-05 01:39:18.406940', job_id='26196302', GAL2='0.80', fit_tolerance='1e-08', EG2='1.15', EG='1.18', time_epoch_completed='1777970358.41', return_code2='102', ts='-0.00', comment='SUCCESS', return_code='0', GAL='0.78', dlogl='3.34e-01', ts2='0.72', photon_index_error='0.00', photon_index='2.94' WHERE bin_id='926' AND source_name='4FGL J1521.8+4338' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue May 5 01:39:18 PDT 2026