********** ** 18 **HESSE ********** FCN= 24139.38 FROM HESSE STATUS=OK 267 CALLS 2097 TOTAL EDM= .15E-08 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .22204E-09 6.1327 .11916E-01 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Prefactor .0000 3.3415 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor 6.0148 3.9936 .40936E-03 -1.5659 4 Prefactor .55511E-10 9.8435 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 5 Prefactor 14.675 21.667 .26150E-03 -1.5631 6 Prefactor .36697 .83292 .56615E-02 -1.5696 7 Prefactor .0000 20.761 .17321E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 norm .55511E-10 6.2814 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor 11.596 11.237 .29384E-03 -1.5640 10 Prefactor .94369E-09 151.25 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 16.190 9.2399 .24851E-03 -1.5627 12 norm .55511E-10 16.590 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm 1.2139 .75564 .10252E-02 -1.5686 14 Prefactor .11102E-09 15.573 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 15 norm .0000 .81245 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 16 Normalizat .57205 .22003 .16978 -1.0918 17 Prefactor 1.1529 .50132E-01 .35854E-01 -.87793 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.49992e-09 Minuit parameter uncertainties: 1 6.91255e-05 2 4.78068e-06 3 3.99362 4 4.51266e-05 5 21.6675 6 0.832919 7 1.56567e-05 8 3.44869e-05 9 11.2368 10 0.00075106 11 9.23988 12 7.1225e-05 13 0.75564 14 7.9872e-05 15 1.99305e-06 16 0.220364 17 0.0501345 number of points = 17392 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3805462 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 1.566e-05 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 5.013e-02 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 2.204e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): 0.00 Ra Dec: 300.375 -8.316 Photon Flux Upper Limit: 5.82491946879e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.00442250042201 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/31683122/likelihoodResults_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.4036561 delta logL = -0.02310989947 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 24138.9925485 delta logL = 0.387997691101 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .15543E-08 1.0000 .0000 .10000E+07 2 'Index ' 10.0000 1.0000 .0000 10.000 3 'Normalizat' .53596 1.0000 .10000E-01 10.000 4 'Prefactor ' 1.1575 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 81 CALLS 541 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 4.2999 .42118E-03** at limit ** 2 Index .65614 .78230 .13559E-04 .0000 3 Normalizat .57204 .89760 .17340E-04 .19513E-03 4 Prefactor 1.1529 1.1168 .54637E-05 -.46134E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 0.656139 Normalizat = 0.572043 Prefactor = 1.1529 /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 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM HESSE STATUS=FAILED 9 CALLS 550 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 4.2999 .42118E-03 -.15167E+06 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .16316E-03 .87848 .13559E-04 -.17487E+07 3 Normalizat .57204 .89760 .17340E-04 161.31 4 Prefactor 1.1529 1.1168 .54637E-05 -157.96 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 3.6131e-10 Minuit parameter uncertainties: 1 8.54935e-06 2 0.795937 3 0.92206 4 1.1409 Done. Performing analysis on: 4FGL_J2001.5-0818_weekly_bin936 RA = 300.375, Dec = -8.3162 tmin = 805075201, tmax = 805680001 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='31684350', job_status='RUN', time_executed='2026-07-14 17:17:23.197266', time_epoch_executed='1784074643.2' WHERE source_name='4FGL J2001.5-0818' and cadence='weekly' and bin_id='936' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/31684350 Creating custom pfile directory: /lscratch/kocevski/31684350/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=805075201.0 && nMetStart<805680001.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=805075201.0 && nMetStart<805680001.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/31684350/ft1_4FGL_J2001.5-0818_weekly_bin936.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=805075201.0 && nMetStart<805680001.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/31684350/ft1_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31684350/ft1_filteredMKT_4FGL_J2001.5-0818_weekly_bin936.fits ra=300.375 dec=-8.3162 rad=12.0 tmin=805075201.0 tmax=805680001.0 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 5.37 user 4.47 sys 0.23 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.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/31684350/ft1_filteredMKT_4FGL_J2001.5-0818_weekly_bin936.fits evtable="EVENTS" outfile="/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.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 1.20 user 0.20 sys 0.13 Number of photons that the gtmktime cut: 2310 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits" evtable="EVENTS" scfile=/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.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) 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) = 24139.3805462 delta logL = -6.91215973347e-11 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 8.549e-06 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 6.561e-01 7.959e-01 0.000e+00 1.000e+01 (-1.000e+00) 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 1.141e+00 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 9.221e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 0.00 Ra Dec: 300.375 -8.316 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/31683122/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='4.42e-03', job_status='DONE', photon_flux_upper_limit='5.82e-08', time_completed='2026-07-14 17:26:25.363356', job_id='31683122', GAL2='1.15', fit_tolerance='1e-08', EG2='0.57', EG='0.57', time_epoch_completed='1784075185.36', return_code2='101', ts='0.00', comment='SUCCESS', return_code='0', GAL='1.15', dlogl='-6.91e-11', ts2='0.00', photon_index_error='0.00', photon_index='2.15' WHERE bin_id='936' AND source_name='4FGL J2001.5-0818' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue Jul 14 17:26:26 PDT 2026 WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). outfile=/lscratch/kocevski/31684350/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits .....................! real 18.97 user 17.89 sys 0.22 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits evtable="EVENTS" scfile=/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits sctable="SC_DATA" expcube=/lscratch/kocevski/31684350/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31684350/expmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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/31684350/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits .....................! real 70.71 user 65.33 sys 4.11 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 Extended source G24.7+0.6 in ROI with RadialDisk spatial model. Extended source W 41 in ROI with RadialGaussian spatial model. Extended source FGES J1836.5-0651 in ROI with RadialDisk spatial model. Extended source FGES J1838.9-0704 in ROI with RadialDisk spatial model. Extended source Kes 73 in ROI with RadialDisk spatial model. Extended source HESS J1841-055 in ROI, make sure /sdf/group/fermi/g/LCRepository/Likelihood/ExtendedSources/Extended_8years/Templates/HESSJ1841-055.fits is the correct path to the extended template. Extended source Kes 79 in ROI with RadialDisk spatial model. Extended source W 44 in ROI, make sure /sdf/group/fermi/g/LCRepository/Likelihood/ExtendedSources/Extended_8years/Templates/W44.fits is the correct path to the extended template. Extended source HESS J1857+026 in ROI with RadialDisk spatial model. Extended source G42.8+0.6 in ROI with RadialDisk spatial model. Added 282 point sources and 10 extended sources If using unbinned likelihood you will need to rerun gtdiffrsp for the extended sources or rerun the makeModel function with optional argument psForce=True Setting source of interest to: 4FGL J2001.5-0818 @ 300.375 -8.3162 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits scfile=/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31684350/cmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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=300.375 yref=-8.3162 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 1.11 user 0.23 sys 0.12 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits scfile=/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31684350/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=2000Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3805462 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 1.566e-05 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 5.013e-02 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 2.204e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): 0.00 Ra Dec: 300.375 -8.316 Photon Flux Upper Limit: 5.82491946879e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.00442250042201 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/31683166/likelihoodResults_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.4036561 delta logL = -0.02310989947 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 24138.9925485 delta logL = 0.387997691101 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .15543E-08 1.0000 .0000 .10000E+07 2 'Index ' 10.0000 1.0000 .0000 10.000 3 'Normalizat' .53596 1.0000 .10000E-01 10.000 4 'Prefactor ' 1.1575 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 81 CALLS 541 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 4.2999 .42118E-03** at limit ** 2 Index .65614 .78230 .13559E-04 .0000 3 Normalizat .57204 .89760 .17340E-04 .19513E-03 4 Prefactor 1.1529 1.1168 .54637E-05 -.46134E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 0.656139 Normalizat = 0.572043 Prefactor = 1.1529 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM HESSE STATUS=FAILED 9 CALLS 550 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 4.2999 .42118E-03 -.15167E+06 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .16316E-03 .87848 .13559E-04 -.17487E+07 3 Normalizat .57204 .89760 .17340E-04 161.31 4 Prefactor 1.1529 1.1168 .54637E-05 -157.96 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 3.6131e-10 Minuit parameter uncertainties: 1 8.54935e-06 2 0.795937 3 0.92206 4 1.1409 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) = 24139.3805462 delta logL = -6.91215973347e-11 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 8.549e-06 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 6.561e-01 7.959e-01 0.000e+00 1.000e+01 (-1.000e+00) 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 1.141e+00 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 9.221e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 0.00 Ra Dec: 300.375 -8.316 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/31683166/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='4.42e-03', job_status='DONE', photon_flux_upper_limit='5.82e-08', time_completed='2026-07-14 17:28:50.155204', job_id='31683166', GAL2='1.15', fit_tolerance='1e-08', EG2='0.57', EG='0.57', time_epoch_completed='1784075330.16', return_code2='101', ts='0.00', comment='SUCCESS', return_code='0', GAL='1.15', dlogl='-6.91e-11', ts2='0.00', photon_index_error='0.00', photon_index='2.15' WHERE bin_id='936' AND source_name='4FGL J2001.5-0818' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue Jul 14 17:28:50 PDT 2026 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3805462 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 1.566e-05 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 5.013e-02 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 2.204e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): 0.00 Ra Dec: 300.375 -8.316 Photon Flux Upper Limit: 5.82491946879e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.00442250042201 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/31683234/likelihoodResults_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.4036561 delta logL = -0.02310989947 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 24138.9925485 delta logL = 0.387997691101 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .15543E-08 1.0000 .0000 .10000E+07 2 'Index ' 10.0000 1.0000 .0000 10.000 3 'Normalizat' .53596 1.0000 .10000E-01 10.000 4 'Prefactor ' 1.1575 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 81 CALLS 541 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 4.2999 .42118E-03** at limit ** 2 Index .65614 .78230 .13559E-04 .0000 3 Normalizat .57204 .89760 .17340E-04 .19513E-03 4 Prefactor 1.1529 1.1168 .54637E-05 -.46134E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 0.656139 Normalizat = 0.572043 Prefactor = 1.1529 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM HESSE STATUS=FAILED 9 CALLS 550 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 4.2999 .42118E-03 -.15167E+06 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .16316E-03 .87848 .13559E-04 -.17487E+07 3 Normalizat .57204 .89760 .17340E-04 161.31 4 Prefactor 1.1529 1.1168 .54637E-05 -157.96 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 3.6131e-10 Minuit parameter uncertainties: 1 8.54935e-06 2 0.795937 3 0.92206 4 1.1409 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) = 24139.3805462 delta logL = -6.91215973347e-11 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 8.549e-06 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 6.561e-01 7.959e-01 0.000e+00 1.000e+01 (-1.000e+00) 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 1.141e+00 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 9.221e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 0.00 Ra Dec: 300.375 -8.316 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/31683234/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='4.42e-03', job_status='DONE', photon_flux_upper_limit='5.82e-08', time_completed='2026-07-14 17:29:45.924565', job_id='31683234', GAL2='1.15', fit_tolerance='1e-08', EG2='0.57', EG='0.57', time_epoch_completed='1784075385.92', return_code2='101', ts='0.00', comment='SUCCESS', return_code='0', GAL='1.15', dlogl='-6.91e-11', ts2='0.00', photon_index_error='0.00', photon_index='2.15' WHERE bin_id='936' AND source_name='4FGL J2001.5-0818' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue Jul 14 17:29:46 PDT 2026 number of points = 17392 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. Performing analysis on: 4FGL_J2001.5-0818_weekly_bin936 RA = 300.375, Dec = -8.3162 tmin = 805075201, tmax = 805680001 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='31685121', job_status='RUN', time_executed='2026-07-14 17:26:35.517305', time_epoch_executed='1784075195.52' WHERE source_name='4FGL J2001.5-0818' and cadence='weekly' and bin_id='936' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/31685121 Creating custom pfile directory: /lscratch/kocevski/31685121/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=805075201.0 && nMetStart<805680001.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=805075201.0 && nMetStart<805680001.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/31685121/ft1_4FGL_J2001.5-0818_weekly_bin936.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=805075201.0 && nMetStart<805680001.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/31685121/ft1_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31685121/ft1_filteredMKT_4FGL_J2001.5-0818_weekly_bin936.fits ra=300.375 dec=-8.3162 rad=12.0 tmin=805075201.0 tmax=805680001.0 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 4.58 user 3.88 sys 0.22 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.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/31685121/ft1_filteredMKT_4FGL_J2001.5-0818_weekly_bin936.fits evtable="EVENTS" outfile="/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.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 0.97 user 0.19 sys 0.13 Number of photons that the gtmktime cut: 2310 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits" evtable="EVENTS" scfile=/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits sctable="SC_DATA" outfile=/lscratch/kocevski/31685121/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits .....................! real 15.95 user 15.11 sys 0.24 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits evtable="EVENTS" scfile=/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits sctable="SC_DATA" expcube=/lscratch/kocevski/31685121/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31685121/expmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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/31685121/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits .....................! real 59.81 user 55.56 sys 3.47 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 Extended source G24.7+0.6 in ROI with RadialDisk spatial model. Extended source W 41 in ROI with RadialGaussian spatial model. Extended source FGES J1836.5-0651 in ROI with RadialDisk spatial model. Extended source FGES J1838.9-0704 in ROI with RadialDisk spatial model. Extended source Kes 73 in ROI with RadialDisk spatial model. Extended source HESS J1841-055 in ROI, make sure /sdf/group/fermi/g/LCRepository/Likelihood/ExtendedSources/Extended_8years/Templates/HESSJ1841-055.fits is the correct path to the extended template. Extended source Kes 79 in ROI with RadialDisk spatial model. Extended source W 44 in ROI, make sure /sdf/group/fermi/g/LCRepository/Likelihood/ExtendedSources/Extended_8years/Templates/W44.fits is the correct path to the extended template. Extended source HESS J1857+026 in ROI with RadialDisk spatial model. Extended source G42.8+0.6 in ROI with RadialDisk spatial model. Added 282 point sources and 10 extended sources If using unbinned likelihood you will need to rerun gtdiffrsp for the extended sources or rerun the makeModel function with optional argument psForce=True Setting source of interest to: 4FGL J2001.5-0818 @ 300.375 -8.3162 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits scfile=/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31685121/cmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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=300.375 yref=-8.3162 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 0.79 user 0.22 sys 0.12 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits scfile=/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits outfile=/lscratch/kocevski/31685121/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits algorithm="CMAP" ebinalg="LOG" emin=30.0 emax=20000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=500 nypix=500 binsz=0.1 coordsys="CEL" xref=300.375 yref=-8.3162 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 1.02 user 0.24 sys 0.13 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits evtable="EVENTS" scfile=/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/31684350/Model_4FGL_J2001.5-0818_weekly_bin936.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 FGES J1836.5-0651 adding source FGES J1838.9-0704 adding source G24.7+0.6 adding source G42.8+0.6 adding source GAL_V02 adding source HESS J1841-055 adding source HESS J1857+026 adding source Kes 73 adding source Kes 79 adding source W 41 adding source W 44 Working on... /lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits.....................! real 170.19 user 167.47 sys 1.06 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits', '/lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits', expMap='/lscratch/kocevski/31684350/expmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits', expCube='/lscratch/kocevski/31684350/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/31684350/Model_4FGL_J2001.5-0818_weekly_bin936.xml', optimizer='MINUIT') Using source of interest name: '4FGL J2001.5-0818' 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 2.722e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/31684350/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits Spacecraft file(s): /lscratch/kocevski/31684350/ft2_4FGL_J2001.5-0818_weekly_bin936.fits Exposure map: /lscratch/kocevski/31684350/expmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits Exposure cube: /lscratch/kocevski/31684350/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/31684350/Model_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.3865153 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3833648 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .36028 1.0000 .0000 .10000E+07 2 'Prefactor ' .20742E-04 1.0000 .0000 .10000E+07 3 'Prefactor ' 6.0093 1.0000 .0000 .10000E+07 4 'Prefactor ' .97573E-02 1.0000 .0000 .10000E+07 5 'Prefactor ' 14.641 1.0000 .0000 .10000E+07 6 'Prefactor ' .36684 1.0000 .0000 .10000E+07 7 'Prefactor ' .15922E-01 1.0000 .0000 .10000E+07 8 'norm ' .14013E-02 1.0000 .0000 .10000E+07 9 'Prefactor ' 11.604 1.0000 .0000 .10000E+07 10 'Prefactor ' .42129E-03 1.0000 .0000 .10000E+07 11 'norm ' 16.209 1.0000 .0000 .10000E+07 12 'norm ' .76078E-06 1.0000 .0000 .10000E+07 13 'norm ' 1.2143 1.0000 .0000 .10000E+07 14 'Prefactor ' .42268E-03 1.0000 .0000 .10000E+07 15 'norm ' .22204E-08 1.0000 .0000 .10000E+07 16 'Normalizat' .57152 1.0000 .10000E-01 10.000 17 'Prefactor ' 1.1529 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 144 CALLS 1830 TOTAL EDM= .29E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY= 1.5% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .22204E-09 126.66 .55801E-05** at limit ** 2 Prefactor .0000 3.3372 -.34806E-06** at limit ** 3 Prefactor 6.0148 3.9482 -.12591E-06 .16775E-03 4 Prefactor .55511E-10 9.8336 .13819E-05** at limit ** 5 Prefactor 14.675 1.0693 -.18369E-07 .15403E-02 6 Prefactor .36697 1.6201 .41434E-06 .14685E-02 7 Prefactor .0000 20.967 -.13726E-05** at limit ** 8 norm .55511E-10 6.2818 .88863E-06** at limit ** 9 Prefactor 11.596 11.232 .18315E-06 -.66691E-04 10 Prefactor .94369E-09 150.36 -.61670E-06** at limit ** 11 norm 16.190 9.2222 -.70014E-07 -.75376E-03 12 norm .55511E-10 16.656 .10734E-05** at limit ** 13 norm 1.2139 .74098 .10420E-06 -.75948E-03 14 Prefactor .11102E-09 15.609 .16506E-05** at limit ** 15 norm .0000 .80697 .22560E-06** at limit ** 16 Normalizat .57205 .20467 .97090E-05 .46708E-04 17 Prefactor 1.1529 .48614E-01 -.46013E-06 .25361E-03 ERR DEF= .500 Final values: Prefactor = 2.22045e-10 Prefactor = 0 Prefactor = 6.0148 Prefactor = 5.55112e-11 Prefactor = 14.6753 Prefactor = 0.366967 Prefactor = 0 norm = 5.55112e-11 Prefactor = 11.5963 Prefactor = 9.4369e-10 norm = 16.1898 norm = 5.55112e-11 norm = 1.21395 Prefactor = 1.11022e-10 norm = 0 Normalizat = 0.572046 Prefactor = 1.1529 ********** ** 18 **HESSE ********** FCN= 24139.38 FROM HESSE STATUS=OK 267 CALLS 2097 TOTAL EDM= .15E-08 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .22204E-09 6.1327 .11916E-01 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Prefactor .0000 3.3415 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor 6.0148 3.9936 .40936E-03 -1.5659 4 Prefactor .55511E-10 9.8435 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 5 Prefactor 14.675 21.667 .26150E-03 -1.5631 6 Prefactor .36697 .83292 .56615E-02 -1.5696 7 Prefactor .0000 20.761 .17321E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 norm .55511E-10 6.2814 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor 11.596 11.237 .29384E-03 -1.5640 10 Prefactor .94369E-09 151.25 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 16.190 9.2399 .24851E-03 -1.5627 12 norm .55511E-10 16.590 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm 1.2139 .75564 .10252E-02 -1.5686 14 Prefactor .11102E-09 15.573 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 15 norm .0000 .81245 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 16 Normalizat .57205 .22003 .16978 -1.0918 17 Prefactor 1.1529 .50132E-01 .35854E-01 -.87793 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.49992e-09 Minuit parameter uncertainties: 1 6.91255e-05 2 4.78068e-06 3 3.99362 4 4.51266e-05 5 21.6675 6 0.832919 7 1.56567e-05 8 3.44869e-05 9 11.2368 10 0.00075106 11 9.23988 12 7.1225e-05 13 0.75564 14 7.9872e-05 15 1.99305e-06 16 0.220364 17 0.0501345 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3805462 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 1.566e-05 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 5.013e-02 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 2.204e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): 0.00 Ra Dec: 300.375 -8.316 Photon Flux Upper Limit: 5.82491946879e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.00442250042201 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/31684350/likelihoodResults_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.4036561 delta logL = -0.02310989947 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 24138.9925485 delta logL = 0.387997691101 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .15543E-08 1.0000 .0000 .10000E+07 2 'Index ' 10.0000 1.0000 .0000 10.000 3 'Normalizat' .53596 1.0000 .10000E-01 10.000 4 'Prefactor ' 1.1575 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 81 CALLS 541 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 4.2999 .42118E-03** at limit ** 2 Index .65614 .78230 .13559E-04 .0000 3 Normalizat .57204 .89760 .17340E-04 .19513E-03 4 Prefactor 1.1529 1.1168 .54637E-05 -.46134E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 0.656139 Normalizat = 0.572043 Prefactor = 1.1529 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM HESSE STATUS=FAILED 9 CALLS 550 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 4.2999 .42118E-03 -.15167E+06 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .16316E-03 .87848 .13559E-04 -.17487E+07 3 Normalizat .57204 .89760 .17340E-04 161.31 4 Prefactor 1.1529 1.1168 .54637E-05 -157.96 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 3.6131e-10 Minuit parameter uncertainties: 1 8.54935e-06 2 0.795937 3 0.92206 4 1.1409 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) = 24139.3805462 delta logL = -6.91215973347e-11 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 8.549e-06 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 6.561e-01 7.959e-01 0.000e+00 1.000e+01 (-1.000e+00) 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 1.141e+00 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 9.221e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 0.00 Ra Dec: 300.375 -8.316 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/31684350/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='4.42e-03', job_status='DONE', photon_flux_upper_limit='5.82e-08', time_completed='2026-07-14 17:43:36.293329', job_id='31684350', GAL2='1.15', fit_tolerance='1e-08', EG2='0.57', EG='0.57', time_epoch_completed='1784076216.29', return_code2='101', ts='0.00', comment='SUCCESS', return_code='0', GAL='1.15', dlogl='-6.91e-11', ts2='0.00', photon_index_error='0.00', photon_index='2.15' WHERE bin_id='936' AND source_name='4FGL J2001.5-0818' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue Jul 14 17:43:36 PDT 2026 000.0 ebinfile=NONE tbinalg="LIN" tbinfile=NONE nxpix=500 nypix=500 binsz=0.1 coordsys="CEL" xref=300.375 yref=-8.3162 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 0.85 user 0.22 sys 0.12 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits evtable="EVENTS" scfile=/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/31685121/Model_4FGL_J2001.5-0818_weekly_bin936.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 FGES J1836.5-0651 adding source FGES J1838.9-0704 adding source G24.7+0.6 adding source G42.8+0.6 adding source GAL_V02 adding source HESS J1841-055 adding source HESS J1857+026 adding source Kes 73 adding source Kes 79 adding source W 41 adding source W 44 Working on... /lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits.....................! real 143.72 user 141.81 sys 0.80 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits', '/lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits', expMap='/lscratch/kocevski/31685121/expmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits', expCube='/lscratch/kocevski/31685121/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/31685121/Model_4FGL_J2001.5-0818_weekly_bin936.xml', optimizer='MINUIT') Using source of interest name: '4FGL J2001.5-0818' 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 2.722e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/31685121/ft1_filtered_4FGL_J2001.5-0818_weekly_bin936.fits Spacecraft file(s): /lscratch/kocevski/31685121/ft2_4FGL_J2001.5-0818_weekly_bin936.fits Exposure map: /lscratch/kocevski/31685121/expmap_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits Exposure cube: /lscratch/kocevski/31685121/ltcube_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/31685121/Model_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.3865153 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3833648 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .36028 1.0000 .0000 .10000E+07 2 'Prefactor ' .20742E-04 1.0000 .0000 .10000E+07 3 'Prefactor ' 6.0093 1.0000 .0000 .10000E+07 4 'Prefactor ' .97573E-02 1.0000 .0000 .10000E+07 5 'Prefactor ' 14.641 1.0000 .0000 .10000E+07 6 'Prefactor ' .36684 1.0000 .0000 .10000E+07 7 'Prefactor ' .15922E-01 1.0000 .0000 .10000E+07 8 'norm ' .14013E-02 1.0000 .0000 .10000E+07 9 'Prefactor ' 11.604 1.0000 .0000 .10000E+07 10 'Prefactor ' .42129E-03 1.0000 .0000 .10000E+07 11 'norm ' 16.209 1.0000 .0000 .10000E+07 12 'norm ' .76078E-06 1.0000 .0000 .10000E+07 13 'norm ' 1.2143 1.0000 .0000 .10000E+07 14 'Prefactor ' .42268E-03 1.0000 .0000 .10000E+07 15 'norm ' .22204E-08 1.0000 .0000 .10000E+07 16 'Normalizat' .57152 1.0000 .10000E-01 10.000 17 'Prefactor ' 1.1529 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 144 CALLS 1830 TOTAL EDM= .29E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY= 1.5% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .22204E-09 126.66 .55801E-05** at limit ** 2 Prefactor .0000 3.3372 -.34806E-06** at limit ** 3 Prefactor 6.0148 3.9482 -.12591E-06 .16775E-03 4 Prefactor .55511E-10 9.8336 .13819E-05** at limit ** 5 Prefactor 14.675 1.0693 -.18369E-07 .15403E-02 6 Prefactor .36697 1.6201 .41434E-06 .14685E-02 7 Prefactor .0000 20.967 -.13726E-05** at limit ** 8 norm .55511E-10 6.2818 .88863E-06** at limit ** 9 Prefactor 11.596 11.232 .18315E-06 -.66691E-04 10 Prefactor .94369E-09 150.36 -.61670E-06** at limit ** 11 norm 16.190 9.2222 -.70014E-07 -.75376E-03 12 norm .55511E-10 16.656 .10734E-05** at limit ** 13 norm 1.2139 .74098 .10420E-06 -.75948E-03 14 Prefactor .11102E-09 15.609 .16506E-05** at limit ** 15 norm .0000 .80697 .22560E-06** at limit ** 16 Normalizat .57205 .20467 .97090E-05 .46708E-04 17 Prefactor 1.1529 .48614E-01 -.46013E-06 .25361E-03 ERR DEF= .500 Final values: Prefactor = 2.22045e-10 Prefactor = 0 Prefactor = 6.0148 Prefactor = 5.55112e-11 Prefactor = 14.6753 Prefactor = 0.366967 Prefactor = 0 norm = 5.55112e-11 Prefactor = 11.5963 Prefactor = 9.4369e-10 norm = 16.1898 norm = 5.55112e-11 norm = 1.21395 Prefactor = 1.11022e-10 norm = 0 Normalizat = 0.572046 Prefactor = 1.1529 ********** ** 18 **HESSE ********** FCN= 24139.38 FROM HESSE STATUS=OK 267 CALLS 2097 TOTAL EDM= .15E-08 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .22204E-09 6.1327 .11916E-01 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Prefactor .0000 3.3415 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 3 Prefactor 6.0148 3.9936 .40936E-03 -1.5659 4 Prefactor .55511E-10 9.8435 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 5 Prefactor 14.675 21.667 .26150E-03 -1.5631 6 Prefactor .36697 .83292 .56615E-02 -1.5696 7 Prefactor .0000 20.761 .17321E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 norm .55511E-10 6.2814 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 9 Prefactor 11.596 11.237 .29384E-03 -1.5640 10 Prefactor .94369E-09 151.25 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 norm 16.190 9.2399 .24851E-03 -1.5627 12 norm .55511E-10 16.590 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm 1.2139 .75564 .10252E-02 -1.5686 14 Prefactor .11102E-09 15.573 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 15 norm .0000 .81245 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 16 Normalizat .57205 .22003 .16978 -1.0918 17 Prefactor 1.1529 .50132E-01 .35854E-01 -.87793 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 1.49992e-09 Minuit parameter uncertainties: 1 6.91255e-05 2 4.78068e-06 3 3.99362 4 4.51266e-05 5 21.6675 6 0.832919 7 1.56567e-05 8 3.44869e-05 9 11.2368 10 0.00075106 11 9.23988 12 7.1225e-05 13 0.75564 14 7.9872e-05 15 1.99305e-06 16 0.220364 17 0.0501345 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 24139.3805462 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 1.566e-05 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 2.153e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 5.013e-02 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 2.204e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): 0.00 Ra Dec: 300.375 -8.316 Photon Flux Upper Limit: 5.82491946879e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.00442250042201 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/31685121/likelihoodResults_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.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) = 24139.4036561 delta logL = -0.02310989947 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 102 logL (Free Index) = 24138.9925485 delta logL = 0.387997691101 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .15543E-08 1.0000 .0000 .10000E+07 2 'Index ' 10.0000 1.0000 .0000 10.000 3 'Normalizat' .53596 1.0000 .10000E-01 10.000 4 'Prefactor ' 1.1575 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .1028E+06 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. MIGRAD WILL VERIFY CONVERGENCE AND ERROR MATRIX. MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM MIGRAD STATUS=CONVERGED 81 CALLS 541 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 4.2999 .42118E-03** at limit ** 2 Index .65614 .78230 .13559E-04 .0000 3 Normalizat .57204 .89760 .17340E-04 .19513E-03 4 Prefactor 1.1529 1.1168 .54637E-05 -.46134E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 0.656139 Normalizat = 0.572043 Prefactor = 1.1529 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 24139.38 FROM HESSE STATUS=FAILED 9 CALLS 550 TOTAL EDM= .36E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 4.2999 .42118E-03 -.15167E+06 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .16316E-03 .87848 .13559E-04 -.17487E+07 3 Normalizat .57204 .89760 .17340E-04 161.31 4 Prefactor 1.1529 1.1168 .54637E-05 -157.96 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 3.6131e-10 Minuit parameter uncertainties: 1 8.54935e-06 2 0.795937 3 0.92206 4 1.1409 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) = 24139.3805462 delta logL = -6.91215973347e-11 Extracting fit parameters... 4FGL J2001.5-0818 Spectrum: PowerLaw 678 Prefactor: 0.000e+00 8.549e-06 0.000e+00 1.000e+06 ( 1.000e-14) 679 Index: 6.561e-01 7.959e-01 0.000e+00 1.000e+01 (-1.000e+00) 680 Scale: 2.709e+03 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 1004 Prefactor: 1.153e+00 1.141e+00 0.000e+00 1.000e+01 ( 1.000e+00) 1005 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 1006 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 990 Normalization: 5.720e-01 9.221e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): 0.00 Ra Dec: 300.375 -8.316 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/31685121/cmap_HighResolution_805075201_805680001_4FGL_J2001.5-0818_weekly_bin936.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='4.42e-03', job_status='DONE', photon_flux_upper_limit='5.82e-08', time_completed='2026-07-14 17:48:33.256031', job_id='31685121', GAL2='1.15', fit_tolerance='1e-08', EG2='0.57', EG='0.57', time_epoch_completed='1784076513.26', return_code2='101', ts='0.00', comment='SUCCESS', return_code='0', GAL='1.15', dlogl='-6.91e-11', ts2='0.00', photon_index_error='0.00', photon_index='2.15' WHERE bin_id='936' AND source_name='4FGL J2001.5-0818' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue Jul 14 17:48:33 PDT 2026