/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 = 17363 number of fields = 31 RA_SUN column already exists. File will not be modified. Done. Performing analysis on: 4FGL_J1520.5+4209_weekly_bin917 RA = 230.135, Dec = 42.16 tmin = 793584001, tmax = 794188801 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='22512618', job_status='RUN', time_executed='2026-03-03 01:38:44.316124', time_epoch_executed='1772530724.32' WHERE source_name='4FGL J1520.5+4209' and cadence='weekly' and bin_id='917' Database successfully updated. Done. Creating custom output directory: /lscratch/kocevski/22512618 Creating custom pfile directory: /lscratch/kocevski/22512618/pfiles/ Retrieving the FT1 file... Issuing command: datacat find --group FT1 --filter 'nMetStop>=793584001.0 && nMetStart<794188801.0' /Data/Flight/Reprocess/P305 Issuing command: datacat find --group FT1 --filter 'nMetStart>564945418 && nMetStop>=793584001.0 && nMetStart<794188801.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Checksum keywords updated successfully. Merged file saved to: /lscratch/kocevski/22512618/ft1_4FGL_J1520.5+4209_weekly_bin917.fits Retrieving the FT1 file... Issuing command: datacat find --group FT2 --filter 'nMetStop>=793584001.0 && nMetStart<794188801.0' /Data/Flight/Level1/LPA Retrieving 108 files... Done. Merging files... Merged file saved to: /lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits Selecting the photons: time -p gtselect infile=/lscratch/kocevski/22512618/ft1_4FGL_J1520.5+4209_weekly_bin917.fits outfile=/lscratch/kocevski/22512618/ft1_filteredMKT_4FGL_J1520.5+4209_weekly_bin917.fits ra=230.135 dec=42.16 rad=12.0 tmin=793584001.0 tmax=794188801.0 emin=100.0 emax=100000.0 zmin=0.0 zmax=90.0 evclass=128 evtype="INDEF" convtype=-1 phasemin=0.0 phasemax=1.0 evtable="EVENTS" chatter=2 clobber=yes debug=no gui=no mode="ql" WARNING: version mismatch between CFITSIO header (v3.43) and linked library (v3.41). Done. real 3.47 user 3.01 sys 0.19 Adding sun position to ft2 file: /sdf/group/fermi/g/LCRepository/Repository/bin/sunpos /lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits Selecting the good time intervals: time -p gtmktime scfile=/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.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/22512618/ft1_filteredMKT_4FGL_J1520.5+4209_weekly_bin917.fits evtable="EVENTS" outfile="/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.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 0.62 user 0.18 sys 0.13 Number of photons that the gtmktime cut: 1695 Generating the livetime cube: time -p gtltcube evfile="/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits" evtable="EVENTS" scfile=/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits sctable="SC_DATA" outfile=/lscratch/kocevski/22512618/ltcube_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.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/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits .....................! real 22.38 user 21.77 sys 0.23 Generating the exposure map: time -p gtexpmap evfile=/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits evtable="EVENTS" scfile=/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits sctable="SC_DATA" expcube=/lscratch/kocevski/22512618/ltcube_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.fits outfile=/lscratch/kocevski/22512618/expmap_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.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/22512618/ltcube_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.fits .....................! real 60.00 user 55.76 sys 3.70 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 195 point sources and 0 extended sources Setting source of interest to: 4FGL J1520.5+4209 @ 230.135 42.16 Creating the counts map: time -p gtbin evfile=/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits scfile=/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits outfile=/lscratch/kocevski/22512618/cmap_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.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=230.135 yref=42.16 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 0.80 user 0.22 sys 0.12 Creating the high resolution counts map: time -p gtbin evfile=/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits scfile=/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits outfile=/lscratch/kocevski/22512618/cmap_HighResolution_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.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=230.135 yref=42.16 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 0.88 user 0.21 sys 0.13 Computing the diffuse response: time -p gtdiffrsp evfile=/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits evtable="EVENTS" scfile=/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits sctable="SC_DATA" srcmdl=/lscratch/kocevski/22512618/Model_4FGL_J1520.5+4209_weekly_bin917.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/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits.....................! real 43.37 user 41.25 sys 1.10 Creating the likelihood object... obs = UnbinnedObs('/lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits', '/lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits', expMap='/lscratch/kocevski/22512618/expmap_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.fits', expCube='/lscratch/kocevski/22512618/ltcube_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.fits', irfs='P8R3_SOURCE_V2') like = UnbinnedAnalysis(obs, '/lscratch/kocevski/22512618/Model_4FGL_J1520.5+4209_weekly_bin917.xml', optimizer='MINUIT') Using source of interest name: '4FGL J1520.5+4209' 4FGL J1520.5+4209 Spectrum: PowerLaw 308 Prefactor: 3.393e+00 0.000e+00 0.000e+00 1.000e+06 ( 1.000e-13) 309 Index: 2.505e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 310 Scale: 9.357e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed Likelihood Fit Parameters: Event file(s): /lscratch/kocevski/22512618/ft1_filtered_4FGL_J1520.5+4209_weekly_bin917.fits Spacecraft file(s): /lscratch/kocevski/22512618/ft2_4FGL_J1520.5+4209_weekly_bin917.fits Exposure map: /lscratch/kocevski/22512618/expmap_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.fits Exposure cube: /lscratch/kocevski/22512618/ltcube_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.fits IRFs: P8R3_SOURCE_V2 Source model file: /lscratch/kocevski/22512618/Model_4FGL_J1520.5+4209_weekly_bin917.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) = 18262.5410894 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 18262.4786425 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .93312E-04 1.0000 .0000 .10000E+07 2 'Prefactor ' 4.0777 1.0000 .0000 .10000E+07 3 'norm ' 9.4555 1.0000 .0000 .10000E+07 4 'Prefactor ' .76764E-03 1.0000 .0000 .10000E+07 5 'norm ' 5.5007 1.0000 .0000 .10000E+07 6 'Prefactor ' 9.8574 1.0000 .0000 .10000E+07 7 'norm ' .20980E-04 1.0000 .0000 .10000E+07 8 'Prefactor ' 6.1124 1.0000 .0000 .10000E+07 9 'norm ' .85104 1.0000 .0000 .10000E+07 10 'Prefactor ' .59326E-03 1.0000 .0000 .10000E+07 11 'Prefactor ' .12144E-03 1.0000 .0000 .10000E+07 12 'norm ' .43854E-08 1.0000 .0000 .10000E+07 13 'norm ' .30254E-05 1.0000 .0000 .10000E+07 14 'Prefactor ' .43652E-04 1.0000 .0000 .10000E+07 15 'Prefactor ' .55353E-01 1.0000 .0000 .10000E+07 16 'Prefactor ' .10594E-03 1.0000 .0000 .10000E+07 17 'Prefactor ' .20610E-03 1.0000 .0000 .10000E+07 18 'norm ' 2.9602 1.0000 .0000 .10000E+07 19 'Prefactor ' 3.2104 1.0000 .0000 .10000E+07 20 'norm ' 15.656 1.0000 .0000 .10000E+07 21 'Prefactor ' 10.484 1.0000 .0000 .10000E+07 22 'Prefactor ' .79604E-04 1.0000 .0000 .10000E+07 23 'Prefactor ' 1.0387 1.0000 .0000 .10000E+07 24 'Prefactor ' .34390 1.0000 .0000 .10000E+07 25 'Normalizat' 1.4334 1.0000 .10000E-01 10.000 26 'Prefactor ' .61349 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .6280E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 18262.48 FROM MIGRAD STATUS=CONVERGED 183 CALLS 1844 TOTAL EDM= .39E-09 STRATEGY=1 ERROR MATRIX UNCERTAINTY= 2.8% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .88263E-07 7.1024 .11053E-06** at limit ** 2 Prefactor 4.3053 6.0609 .22609E-07 -.35776E-01 3 norm 9.4234 1.8677 -.89472E-08 .10887E-01 4 Prefactor .79603E-07 9.6606 .78777E-07** at limit ** 5 norm 5.5185 3.9414 .13448E-07 .18780E-02 6 Prefactor 9.8221 5.2604 .56300E-08 -.16253E-01 7 norm .11813E-06 20.576 .47448E-06** at limit ** 8 Prefactor 6.1180 7.6927 -.67204E-08 .14675E-02 9 norm .85125 .65961 -.83843E-09 -.33513E-03 10 Prefactor .37748E-08 5.7437 -.57371E-07** at limit ** 11 Prefactor .0000 1.5547 .10119E-07** at limit ** 12 norm .0000 .63775 -.20297E-07** at limit ** 13 norm .0000 1.2848 -.35142E-07** at limit ** 14 Prefactor .0000 2.5052 .57873E-07** at limit ** 15 Prefactor .12002E-06 33.755 .79675E-07** at limit ** 16 Prefactor .22204E-09 4.7391 -.17732E-07** at limit ** 17 Prefactor .0000 1.7318 .18505E-07** at limit ** 18 norm 2.9585 .84972 -.33341E-08 -.18449E-02 19 Prefactor 3.2300 3.4990 -.57454E-08 -.34587E-03 20 norm 15.653 7.1274 .51734E-07 .55727E-02 21 Prefactor 10.396 8.1359 .22825E-07 .31605E-01 22 Prefactor .85487E-08 11.910 -.24634E-06** at limit ** 23 Prefactor 1.0913 2.7777 -.29733E-07 -.19319E-02 24 Prefactor .41292E-01 469.28 -.32122E-05** at limit ** 25 Normalizat 1.4333 .12081 .22783E-06 .20560E-04 26 Prefactor .61370 .12101 -.31624E-06 -.97349E-05 ERR DEF= .500 Final values: Prefactor = 8.82627e-08 Prefactor = 4.3053 norm = 9.42344 Prefactor = 7.9603e-08 norm = 5.51848 Prefactor = 9.82213 norm = 1.18128e-07 Prefactor = 6.11802 norm = 0.85125 Prefactor = 3.77476e-09 Prefactor = 0 norm = 0 norm = 0 Prefactor = 0 Prefactor = 1.20015e-07 Prefactor = 2.22045e-10 Prefactor = 0 norm = 2.95852 Prefactor = 3.22996 norm = 15.6535 Prefactor = 10.3965 Prefactor = 8.54872e-09 Prefactor = 1.09133 Prefactor = 0.0412924 Normalizat = 1.43331 Prefactor = 0.613705 ********** ** 18 **HESSE ********** FCN= 18262.48 FROM HESSE STATUS=OK 526 CALLS 2370 TOTAL EDM= .94E-07 STRATEGY= 1 ERROR MATRIX ACCURATE EXT PARAMETER INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .88263E-07 15.890 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Prefactor 4.3053 13.559 .49904E-03 -1.5666 3 norm 9.4234 9.5112 .32566E-03 -1.5647 4 Prefactor .79603E-07 16.187 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 5 norm 5.5185 3.9721 .42816E-03 -1.5661 6 Prefactor 9.8221 9.4321 .31892E-03 -1.5645 7 norm .11813E-06 1.6130 .69531E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 8 Prefactor 6.1180 7.7515 .40585E-03 -1.5658 9 norm .85125 .66551 .49206E-03 -1.5690 10 Prefactor .37748E-08 5.7173 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 11 Prefactor .0000 1.5489 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 12 norm .0000 .27221 .25712E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 13 norm .0000 1.2657 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 14 Prefactor .0000 2.4999 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 15 Prefactor .12002E-06 51.673 .15333E-02 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 16 Prefactor .22204E-09 4.7407 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 17 Prefactor .0000 1.7344 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 18 norm 2.9585 .85419 .58995E-03 -1.5674 19 Prefactor 3.2300 3.5100 .56519E-03 -1.5672 20 norm 15.653 7.1585 .25287E-03 -1.5629 21 Prefactor 10.396 8.5086 .30920E-03 -1.5643 22 Prefactor .85487E-08 12.116 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 23 Prefactor 1.0913 2.8717 .12311E-02 -1.5687 24 Prefactor .41292E-01 6.7733 .96297E-02 -1.5704 WARNING - - ABOVE PARAMETER IS AT LIMIT. 25 Normalizat 1.4333 .10197 .46536E-01 -.79670 26 Prefactor .61370 .10237 .68851E-01 -1.0701 ERR DEF= .500 Minuit fit quality: 3 estimated distance: 9.35845e-08 Minuit parameter uncertainties: 1 0.00236873 2 13.5592 3 9.51122 4 0.00227035 5 3.97212 6 9.43215 7 0.000873026 8 7.75149 9 0.665508 10 0.000294342 11 1.17213e-06 12 1.54817e-06 13 7.53861e-06 14 5.39271e-06 15 0.00498115 16 6.28967e-05 17 2.47316e-07 18 0.854195 19 3.51 20 7.15851 21 8.50859 22 0.00064415 23 2.87167 24 1.05771 25 0.101988 26 0.102396 Done. MINUIT Return Code (Fixed Index): 0 logL (Fixed Index) = 18262.4771348 Extracting fit parameters... 4FGL J1520.5+4209 Spectrum: PowerLaw 308 Prefactor: 2.220e-10 6.290e-05 0.000e+00 1.000e+06 ( 1.000e-13) 309 Index: 2.505e+00 0.000e+00 0.000e+00 1.000e+01 (-1.000e+00) fixed 310 Scale: 9.357e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 625 Prefactor: 6.137e-01 1.024e-01 0.000e+00 1.000e+01 ( 1.000e+00) 626 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 627 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 624 Normalization: 1.433e+00 1.020e-01 1.000e-02 1.000e+01 ( 1.000e+00) TS (Fixed Index): -0.00 Ra Dec: 230.135 42.160 Photon Flux Upper Limit: 2.81733172083e-08 ph cm-2 s-1 Energy Flux Upper Limit: 0.00219192510555 MeV cm-2 s-1 Saving results to: /lscratch/kocevski/22512618/likelihoodResults_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.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) = 18262.485137 delta logL = -0.008002201208 Fit tolerance = 0.0001 Performing likelihood fit... Done. MINUIT Return Code (Free Index): 0 logL (Free Index) = 18262.4771373 delta logL = -2.50631273957e-06 Fit tolerance = 1e-08 Performing likelihood fit... ********** ** 14 **SET NOWARN ********** PARAMETER DEFINITIONS: NO. NAME VALUE STEP SIZE LIMITS 1 'Prefactor ' .12656E-04 1.0000 .0000 .10000E+07 2 'Index ' 2.7445 1.0000 .0000 10.000 3 'Normalizat' 1.4332 1.0000 .10000E-01 10.000 4 'Prefactor ' .61373 1.0000 .0000 10.000 ********** ** 15 **SET ERR .5000 ********** ********** ** 16 **SET GRAD 1.000 ********** ********** ** 17 **MINIMIZE .6280E+05 .2000E-04 ********** MIGRAD MINIMIZATION HAS CONVERGED. FCN= 18262.48 FROM MIGRAD STATUS=CONVERGED 34 CALLS 218 TOTAL EDM= .13E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY= 1.9% EXT PARAMETER STEP FIRST NO. NAME VALUE ERROR SIZE DERIVATIVE 1 Prefactor .0000 7.1916 -.41859E-07** at limit ** 2 Index 1.8024 2.1868 -.29596E-05 .0000 3 Normalizat 1.4333 .11838 -.46624E-05 -.29806E-03 4 Prefactor .61371 .12003 .29223E-05 -.16315E-03 ERR DEF= .500 Final values: Prefactor = 0 Index = 1.80241 Normalizat = 1.43331 Prefactor = 0.613705 ********** ** 18 **HESSE ********** MNHESS FAILS AND WILL RETURN DIAGONAL MATRIX. FCN= 18262.48 FROM HESSE STATUS=FAILED 11 CALLS 229 TOTAL EDM= .13E-10 STRATEGY=1 ERROR MATRIX UNCERTAINTY=100.0% EXT PARAMETER APPROXIMATE INTERNAL INTERNAL NO. NAME VALUE ERROR STEP SIZE VALUE 1 Prefactor .0000 7.1612 .42118E-03 -1.5708 WARNING - - ABOVE PARAMETER IS AT LIMIT. 2 Index .33283 1.5521 -.29596E-05 -.69387 3 Normalizat 1.4333 1.0574 -.46624E-05 -.79670 4 Prefactor .61371 .96200 .29223E-05 -1.0701 ERR DEF= .500 Minuit fit quality: 1 estimated distance: 1.27844e-11 Minuit parameter uncertainties: 1 5.0982e-06 2 0.874904 3 1.07432 4 0.98982 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) = 18262.4771348 delta logL = 1.09139364213e-11 Extracting fit parameters... 4FGL J1520.5+4209 Spectrum: PowerLaw 308 Prefactor: 0.000e+00 5.098e-06 0.000e+00 1.000e+06 ( 1.000e-13) 309 Index: 1.802e+00 8.749e-01 0.000e+00 1.000e+01 (-1.000e+00) 310 Scale: 9.357e+02 0.000e+00 3.000e+01 5.000e+05 ( 1.000e+00) fixed GAL_V02 Spectrum: PowerLaw 625 Prefactor: 6.137e-01 9.898e-01 0.000e+00 1.000e+01 ( 1.000e+00) 626 Index: 0.000e+00 0.000e+00 -1.000e+00 1.000e+00 ( 1.000e+00) fixed 627 Scale: 1.000e+02 0.000e+00 5.000e+01 2.000e+02 ( 1.000e+00) fixed EG_v02 Spectrum: FileFunction 624 Normalization: 1.433e+00 1.074e+00 1.000e-02 1.000e+01 ( 1.000e+00) TS (Free Index): -0.00 Ra Dec: 230.135 42.160 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/22512618/cmap_HighResolution_793584001_794188801_4FGL_J1520.5+4209_weekly_bin917.png Cleaning up... ** Nuclear option initiated! ** Updating database... UPDATE lightcurve_data_v2 SET energy_flux_upper_limit='2.19e-03', job_status='DONE', photon_flux_upper_limit='2.82e-08', time_completed='2026-03-03 01:50:39.868165', job_id='22512618', GAL2='0.61', fit_tolerance='1e-08', EG2='1.43', EG='1.43', time_epoch_completed='1772531439.87', return_code2='101', ts='-0.00', comment='SUCCESS', return_code='0', GAL='0.61', dlogl='1.09e-11', ts2='0.00', photon_index_error='0.00', photon_index='2.50' WHERE bin_id='917' AND source_name='4FGL J1520.5+4209' AND cadence='weekly'; Database successfully updated. Analysis Complete. Tue Mar 3 01:50:40 PST 2026