********** ** 18 **HESSE ********** FCN= 9902.972 FROM HESSE STATUS=OK 33 CALLS 231 TOTAL EDM= .20E-08 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 8.4463 6.3845 .13788E-04 -1.5650 2 Index 2.9914 .76071 .13578E-01 -.41340 3 Normalizat 1.2101 .16924 .22671E-03 -.86290 4 Prefactor .78166 .15680 .25970E-03 -1.0041 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.95617e-09 Minuit parameter uncertainties: 1 6.38455 2 0.764254 3 0.169315 4 0.156893 shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 9902.97233414 delta logL = 0.000828191747132 Extracting fit parameters... 4FGL J2256.0-2740 Spectrum: PowerLaw 340 Prefactor: 8.446e+00 6.385e+00 0.000e+00 1.000e+06 ( 1.000e-11) 341 Index: 2.991e+00 7.643e-01 0.000e+00 1.000e+01 (-1.000e+00) 342 Scale: 2.384e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 558 Prefactor: 7.817e-01 1.569e-01 0.000e+00 1.000e+01 ( 1.000e+00) 559 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 560 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 557 Normalization: 1.210e+00 1.693e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 2.24 Ra Dec: 344.025 -27.674 Photon Index (Free Index): 2.99 +/- 0.76 Photon Flux (Free Index): 5.71e-08 +/- 4.56e-08 Energy Flux (Free Index): 1.14e-05 +/- 8.76e-06 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/31289533/cmap_HighResolution_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='1.11e-02', comment='SUCCESS', photon_flux='5.78e-08', energy_flux2='1.14e-05', photon_flux_error='5.78e-08', dlogl='8.28e-04', energy_flux='1.14e-05', photon_flux2='5.71e-08', job_status='DONE', time_completed='2026-07-10 20:48:04.718350', photon_index_error2='0.76', photon_index2='2.99', ts='2.19', fit_tolerance='1e-08', GAL='0.78', photon_index_error='0.00', photon_flux_upper_limit='1.39e-07', energy_flux_error2='8.76e-06', EG='1.21', time_epoch_completed='1783741684.72', return_code='0', job_id='31289533', GAL2='0.78', EG2='1.21', return_code2='0', energy_flux_error='1.14e-05', photon_flux_error2='4.56e-08', ts2='2.24', photon_index='3.02' WHERE bin_id='935' AND source_name='4FGL J2256.0-2740' AND cadence='weekly'; Database successfully updated. Analysis Complete. Fri Jul 10 20:48:05 PDT 2026 /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 = 17462 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. Performing analysis on: 4FGL_J2256.0-2740_weekly_bin935 RA = 344.025, Dec = -27.6739 tmin = 804470401, tmax = 805075201 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='31289910', job_status='RUN', time_executed='2026-07-10 20:48:23.919797', time_epoch_executed='1783741703.92' WHERE source_name='4FGL J2256.0-2740' and cadence='weekly' and bin_id='935' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/31289910 Creating custom pfile directory: /lscratch/kocevski/31289910/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=804470401.0 && nMetStart<805075201.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=804470401.0 && nMetStart<805075201.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/31289910/ft1_4FGL_J2256.0-2740_weekly_bin935.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=804470401.0 && nMetStart<805075201.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/31289910/ft1_4FGL_J2256.0-2740_weekly_bin935.fits outfile=/lscratch/kocevski/31289910/ft1_filteredMKT_4FGL_J2256.0-2740_weekly_bin935.fits ra=344.025 dec=-27.6739 rad=12.0 tmin=804470401.0 tmax=805075201.0 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 5.52 user 4.73 sys 0.33 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.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/31289910/ft1_filteredMKT_4FGL_J2256.0-2740_weekly_bin935.fits evtable="EVENTS" outfile="/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.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 0.81 user 0.22 sys 0.14 Number of photons that the gtmktime cut: 872 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits" evtable="EVENTS" scfile=/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits sctable="SC_DATA" outfile=/lscratch/kocevski/31289910/ltcube_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.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/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits .....................! real 17.41 user 16.62 sys 0.27 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits evtable="EVENTS" scfile=/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits sctable="SC_DATA" expcube=/lscratch/kocevski/31289910/ltcube_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.fits outfile=/lscratch/kocevski/31289910/expmap_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.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/31289910/ltcube_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.fits .....................! real 65.25 user 60.33 sys 4.06 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 175 point sources and 0 extended sources Setting source of interest to: 4FGL J2256.0-2740 @ 344.025 -27.6739 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits scfile=/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits outfile=/lscratch/kocevski/31289910/cmap_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.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=344.025 yref=-27.6739 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 0.74 user 0.22 sys 0.14 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits scfile=/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits outfile=/lscratch/kocevski/31289910/cmap_HighResolution_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.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=344.025 yref=-27.6739 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 0.75 user 0.23 sys 0.14 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits evtable="EVENTS" scfile=/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/31289910/Model_4FGL_J2256.0-2740_weekly_bin935.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/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits.....................! real 28.56 user 26.51 sys 1.41 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits', '/lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits', expMap='/lscratch/kocevski/31289910/expmap_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.fits', expCube='/lscratch/kocevski/31289910/ltcube_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/31289910/Model_4FGL_J2256.0-2740_weekly_bin935.xml', optimizer='MINUIT') Using source of interest name: '4FGL J2256.0-2740' 4FGL J2256.0-2740 Spectrum: PowerLaw 340 Prefactor: 5.060e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-11) 341 Index: 3.023e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 342 Scale: 2.384e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/31289910/ft1_filtered_4FGL_J2256.0-2740_weekly_bin935.fits Spacecraft file(s): /lscratch/kocevski/31289910/ft2_4FGL_J2256.0-2740_weekly_bin935.fits Exposure map: /lscratch/kocevski/31289910/expmap_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.fits Exposure cube: /lscratch/kocevski/31289910/ltcube_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/31289910/Model_4FGL_J2256.0-2740_weekly_bin935.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) = 9902.97423052 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 9902.97442013 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' 14.833 1.0000 .0000 .10000E+07 2 'Prefactor ' .13975E-04 1.0000 .0000 .10000E+07 3 'norm ' .21290E-03 1.0000 .0000 .10000E+07 4 'Prefactor ' .30073E-02 1.0000 .0000 .10000E+07 5 'Prefactor ' .14046E-04 1.0000 .0000 .10000E+07 6 'norm ' 3.2418 1.0000 .0000 .10000E+07 7 'Prefactor ' .10157E-02 1.0000 .0000 .10000E+07 8 'Prefactor ' 8.0283 1.0000 .0000 .10000E+07 9 'norm ' .72973 1.0000 .0000 .10000E+07 10 'Prefactor ' .26670E-01 1.0000 .0000 .10000E+07 11 'Prefactor ' 8.2882 1.0000 .0000 .10000E+07 12 'norm ' .38041 1.0000 .0000 .10000E+07 13 'Prefactor ' .29324E-01 1.0000 .0000 .10000E+07 14 'Prefactor ' .39041E-03 1.0000 .0000 .10000E+07 15 'norm ' 3.9573 1.0000 .0000 .10000E+07 16 'Prefactor ' .13182E-01 1.0000 .0000 .10000E+07 17 'norm ' 1.8546 1.0000 .0000 .10000E+07 18 'Normalizat' 1.2099 1.0000 .10000E-01 10.000 19 'Prefactor ' .78191 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5610E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 9902.973 FROM MIGRAD STATUS=CONVERGED 130 CALLS 2109 TOTAL EDM= .41E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY= 2.3% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor 14.836 3.0312 .65186E-07 -.70878E-02 2 Prefactor .38858E-09 4.1784 -.24772E-06** at limit ** 3 norm .56177E-07 5.2764 -.27895E-06** at limit ** 4 Prefactor .24369E-06 24.537 -.24162E-06** at limit ** 5 Prefactor .0000 2.1085 .15810E-06** at limit ** 6 norm 3.2396 1.6535 -.82575E-08 .76784E-03 7 Prefactor .15915E-06 22.522 .65260E-06** at limit ** 8 Prefactor 8.0359 7.8078 -.30482E-06 -.48439E-01 9 norm .71469 2.4968 -.31730E-06 .49220E-03 10 Prefactor .44409E-09 38.840 -.36595E-06** at limit ** 11 Prefactor 8.4463 7.6699 -.19804E-06 -.85677E-03 12 norm .37689 .40008 -.11663E-07 -.20534E-02 13 Prefactor .12089E-01 72.072 -.14823E-05** at limit ** 14 Prefactor .79825E-07 5.0067 -.62433E-06** at limit ** 15 norm 3.9283 6.2727 -.19409E-06 -.67934E-03 16 Prefactor .44409E-09 11.085 -.87187E-06** at limit ** 17 norm 1.8563 2.3559 .31912E-07 -.73427E-03 18 Normalizat 1.2091 .17151 -.14588E-05 .70744E-04 19 Prefactor .78247 .15764 .39671E-05 .55001E-04 ERR DEF= .500 Final values: Prefactor = 14.8359 Prefactor = 3.88578e-10 norm = 5.61773e-08 Prefactor = 2.43694e-07 Prefactor = 0 norm = 3.23957 Prefactor = 1.5915e-07 Prefactor = 8.03589 norm = 0.714691 Prefactor = 4.44089e-10 Prefactor = 8.44625 norm = 0.376894 Prefactor = 0.0120893 Prefactor = 7.9825e-08 norm = 3.92831 Prefactor = 4.44089e-10 norm = 1.85629 Normalizat = 1.20912 Prefactor = 0.782469 ********** ** 18 **HESSE ********** FCN= 9902.973 FROM HESSE STATUS=OK 320 CALLS 2429 TOTAL EDM= .18E-06 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 14.836 12.977 .25980E-03 -1.5631 2 Prefactor .38858E-09 4.1835 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 norm .56177E-07 7.1047 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 4 Prefactor .24369E-06 25.804 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 5 Prefactor .0000 2.1356 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 6 norm 3.2396 1.6548 .56230E-03 -1.5672 7 Prefactor .15915E-06 23.501 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 Prefactor 8.0359 10.447 .35362E-03 -1.5651 9 norm .71469 2.5912 .58327E-03 -1.5691 10 Prefactor .44409E-09 5.5527 .10896E-01 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 Prefactor 8.4463 8.4627 .34799E-03 -1.5650 12 norm .37689 .42173 .91792E-03 -1.5696 13 Prefactor .12089E-01 4.3057 .11825E-01 -1.5706 WARNING - - ABOVE PARAMETER IS AT LIMIT. 14 Prefactor .79825E-07 7.2639 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 15 norm 3.9283 6.2921 .50682E-03 -1.5668 16 Prefactor .44409E-09 11.130 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 17 norm 1.8563 2.3633 .76512E-03 -1.5681 18 Normalizat 1.2091 .14340 .51297E-01 -.86321 19 Prefactor .78247 .13138 .43481E-01 -1.0038 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.84184e-07 Minuit parameter uncertainties: 1 12.9773 2 7.80044e-05 3 0.00126321 4 0.00501515 5 9.19252e-06 6 1.65477 7 0.00386777 8 10.4469 9 2.59118 10 9.85283e-05 11 8.46272 12 0.421728 13 0.456301 14 0.00152314 15 6.29209 16 0.000137143 17 2.36331 18 0.143451 19 0.131434 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 9902.97316233 Extracting fit parameters... 4FGL J2256.0-2740 Spectrum: PowerLaw 340 Prefactor: 8.446e+00 8.463e+00 0.000e+00 1.000e+06 ( 1.000e-11) 341 Index: 3.023e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 342 Scale: 2.384e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 558 Prefactor: 7.825e-01 1.314e-01 0.000e+00 1.000e+01 ( 1.000e+00) 559 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 560 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 557 Normalization: 1.209e+00 1.435e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): 2.19 Ra Dec: 344.025 -27.674 Photon Index (Fixed Index): 3.02 +/- 0.00 Photon Flux (Fixed Index): 5.78e-08 +/- 5.78e-08 Energy Flux (Fixed Index): 1.14e-05 +/- 1.14e-05 TS (Fixed Index): 2.19 Ra Dec: 344.025 -27.674 Photon Flux Upper Limit: 1.38834861591e-07 ph cm-2 s-1 Energy Flux Upper Limit: 0.0111193491658 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/31289910/likelihoodResults_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.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) = 9902.97235442 delta logL = 0.000807909225841 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 9902.97233425 delta logL = 0.000828084444947 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' 8.4463 1.0000 .0000 .10000E+07 2 'Index ' 2.9911 1.0000 .0000 10.000 3 'Normalizat' 1.2102 1.0000 .10000E-01 10.000 4 'Prefactor ' .78161 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .5610E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. FCN= 9902.972 FROM MIGRAD STATUS=CONVERGED 50 CALLS 198 TOTAL EDM= .28E-09 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor 8.4463 8.5408 .34469E-03 -.74610E-02 2 Index 2.9914 .86306 .22128 -.58500E-04 3 Normalizat 1.2101 .13931 .51278E-01 .11281E-04 4 Prefactor .78166 .13022 .43477E-01 .28703E-04 ERR DEF= .500 Final values: Prefactor = 8.44627 Index = 2.99138 Normalizat = 1.21014 Prefactor = 0.781659 ********** ** 18 **HESSE ********** FCN= 9902.972 FROM HESSE STATUS=OK 33 CALLS 231 TOTAL EDM= .20E-08 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor 8.4463 6.3845 .13788E-04 -1.5650 2 Index 2.9914 .76071 .13578E-01 -.41340 3 Normalizat 1.2101 .16924 .22671E-03 -.86290 4 Prefactor .78166 .15680 .25970E-03 -1.0041 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.95617e-09 Minuit parameter uncertainties: 1 6.38455 2 0.764254 3 0.169315 4 0.156893 shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 9902.97233414 delta logL = 0.000828191747132 Extracting fit parameters... 4FGL J2256.0-2740 Spectrum: PowerLaw 340 Prefactor: 8.446e+00 6.385e+00 0.000e+00 1.000e+06 ( 1.000e-11) 341 Index: 2.991e+00 7.643e-01 0.000e+00 1.000e+01 (-1.000e+00) 342 Scale: 2.384e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 558 Prefactor: 7.817e-01 1.569e-01 0.000e+00 1.000e+01 ( 1.000e+00) 559 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 560 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 557 Normalization: 1.210e+00 1.693e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 2.24 Ra Dec: 344.025 -27.674 Photon Index (Free Index): 2.99 +/- 0.76 Photon Flux (Free Index): 5.71e-08 +/- 4.56e-08 Energy Flux (Free Index): 1.14e-05 +/- 8.76e-06 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/31289910/cmap_HighResolution_804470401_805075201_4FGL_J2256.0-2740_weekly_bin935.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='1.11e-02', comment='SUCCESS', photon_flux='5.78e-08', energy_flux2='1.14e-05', photon_flux_error='5.78e-08', dlogl='8.28e-04', energy_flux='1.14e-05', photon_flux2='5.71e-08', job_status='DONE', time_completed='2026-07-10 20:56:08.910551', photon_index_error2='0.76', photon_index2='2.99', ts='2.19', fit_tolerance='1e-08', GAL='0.78', photon_index_error='0.00', photon_flux_upper_limit='1.39e-07', energy_flux_error2='8.76e-06', EG='1.21', time_epoch_completed='1783742168.91', return_code='0', job_id='31289910', GAL2='0.78', EG2='1.21', return_code2='0', energy_flux_error='1.14e-05', photon_flux_error2='4.56e-08', ts2='2.24', photon_index='3.02' WHERE bin_id='935' AND source_name='4FGL J2256.0-2740' AND cadence='weekly'; Database successfully updated. Analysis Complete. Fri Jul 10 20:56:09 PDT 2026