batgrbproduct analysis for trigger=1059881

batgrbproduct Analysis for Trigger=1059881

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Tue Jul 13 11:11:37 EDT 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1059881/GCN5_download_cron
======================================================================

  Trigger: 01059881      Segment: 000

  BAT Trigger Time: 647775819.264   [s; MET]
      Trigger Stop: 647775820.288   [s; MET]
               UTC: 2021-07-12T09:43:11.908060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 97.3371382959892   Dec: -35.3927995898211  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    13.19
     Image Trigger?:     NO
     Rate S/N Ratio:     25.4950975679639  [ if not an image trigger ]
     Image S/N Ratio:    13.19

  Flight Position:   [ source = BAT ]
    RA: 97.3371382959892   Dec: -35.3927995898211  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 97.3220997571764   Dec: -35.3756016919049  [deg; J2000]  
        { 06h 29m 17.3s , -35d 22' 32.2" }
         +/- 1.66583522413682 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.630383139861331 [arcmin] (formal 1-sigma fit error)
    SNR: 14.6724006851894
 
  Angular difference between Flight and Ground position is 1.267255 arcmin
 
  Partial Coding Fraction: 0.7109375    [ including projection effects ]

  Duration
     T90: 136.407999992371 +/- 63.5773067264535
        Measured from: -34.595999956131
                   to: 101.81200003624     [s; relative to TRIGTIME]
     T50: 52.2799998521805 +/- 2.94100107022538
        Measured from: 2.4080001115799
                   to: 54.6879999637604     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0879999399185181     
                   to: 1.08799993991852     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -39.7600001096725     
                   to: 174.179999947548     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.811701   2.338952   1.178573   0.273905
           0.111561   0.113521   0.096311   0.087880 [error]
 Peak      0.060396   0.107428   0.083959   0.025567
           0.009915   0.010974   0.009912   0.007823 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 6.33e-07 9.43e-07 1.05e-06 2.21e-06 3.29e-06 4.83e-06   erg/cm2
              Error 5.91e-08 5.70e-08 9.57e-08 4.09e-07 2.25e-07 5.01e-07   erg/cm2
Peak flux Power-law 6.41e-01 7.30e-01 5.96e-01 8.15e-01 2.26e+00 2.78e+00   ph/cm2/s
              Error 1.30e-01 9.30e-02 7.92e-02 2.21e-01 2.62e-01 3.27e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.75e-07 1.03e-06 1.03e-06 6.30e-07 3.03e-06 3.27e-06   erg/cm2
              Error 6.83e-08 7.84e-08 1.11e-07 4.57e-07 2.62e-07 5.25e-07   erg/cm2
Peak flux Cutoff-PL 5.73e-01 7.75e-01 6.32e-01 4.23e-01 2.22e+00 2.40e+00   ph/cm2/s
              Error 1.51e-01 1.09e-01 9.22e-02 3.08e-01 2.68e-01 4.42e-01   ph/cm2/s
 
Fluence        Band 5.50e-07 1.06e-06 9.81e-07 1.30e-06 3.09e-06 3.91e-06   erg/cm2
              Error 7.17e-08 8.39e-08 1.09e-07 5.44e-07 2.46e-07 --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.846    0.108    -      -           1.69e-03 1.14e-04   80.110 57
CPL   1.001    0.534      51.8   11.6      4.98e-03 3.82e-03   70.950 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.291    0.186    -      -           1.90e-02 2.15e-03   63.060 57
CPL   0.675    0.776     109.7  -35.4      3.87e-02 4.23e-02   60.910 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 62.464000 sec.
T50 in the 50-300 keV band: 47.104000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  213.940  -39.760  174.180
T90   136.408  -34.596  101.812
T50    52.280    2.408   54.688
Peak    1.000    0.088    1.088

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   97.3221 -35.3756 0.0131   31.8 -150.8       1.9635    14.7  TRIG_01059881       
------------------------------------------
 
Foreground time interval of the image:
-39.760 -12.934 (delta_t =  26.826 [sec])
-12.264  15.937 (delta_t =  28.201 [sec])
Background time interval of the image:
-239.264 -234.494 (delta_t =   4.770 [sec])
-233.264 -196.724 (delta_t =  36.540 [sec])
-195.264 -111.244 (delta_t =  84.020 [sec])
-110.264 -39.760 (delta_t =  70.504 [sec])

Lightcurves

Notes:

1 s binning

From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval

64 ms binning

Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Multiple GTIs in the spectrum
tstart tstop
-39.760000 -12.934000
-12.264000 65.866000
66.736000 66.876000
67.736000 174.180000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84571     ( -0.107266   0.109094 )
Norm@50keV  : 1.69284E-03    ( -0.000114689   0.000113715 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   80.11     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.35e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 211.5 sec: 0.237533 ( -0.0146076  0.0146234 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.29227e-06 ( -2.23621e-07  2.25451e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-39.760000 -12.934000
-12.264000 65.866000
66.736000 66.876000
67.736000 174.180000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00147     ( -0.571203   0.496595 )
Epeak [keV] : 51.7767      ( -7.37961 15.7904 )
Norm@50keV  : 4.97859E-03    ( -0.00230865   0.00532142 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   70.95     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.61e-02 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 211.5 sec: 0.228564 ( -0.015475  0.015468 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.0338e-06 ( -2.58601e-07  2.65411e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-39.760000 -12.934000
-12.264000 65.866000
66.736000 66.876000
67.736000 174.180000
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.428505   ( -0.760768   1.63147 )
beta        : -2.32008    ( -0.816094   0.294188 )
Epeak [keV] : 42.9563      ( -10.7095 11.6559 )
Norm@50keV   : 1.16554E-02    ( -0.0136011   0.167119 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 211.5 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.08591e-06 ( -3.08443e-06  -2.45594e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.2105  (-0.741564  0.803966)
R^2/D10^2   : 7.30229E-02  (-0.0170305   0.0218894)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  105.58     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.74e-05 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.070e-07   4.315e-08
25- 50  1.179e-06   8.460e-08
50-150  8.490e-07   1.192e-07
15-150  2.435e-06   1.660e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 87.3489       (-16.3889      23.3225)
Norm        : 1.08793       (-0.0961511     0.109628)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   71.74     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.05e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.998e-07   5.827e-08
25- 50  1.008e-06   6.419e-08
50-150  1.506e-06   4.632e-07
15-150  3.114e-06   4.494e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.95382        (-1.59928      1.34662)
R1^2/D10^2  : 0.200056        (-0.0759525      0.101295)
kT2 [keV]   : 26.0919        (-8.0345      20.3692)
R2^2/D10^2  : 1.80250E-03    (-0.00152776   0.00644401)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   69.83     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.59e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.260e-07   8.820e-08
25- 50  1.090e-06   2.272e-07
50-150  1.495e-06   6.478e-07
15-150  3.111e-06   8.363e-07

Peak spectrum fit

Power-law model
Time interval is from    0.088 sec. to    1.088 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29146     ( -0.187538   0.185353 )
Norm@50keV  : 1.90056E-02    ( -0.00215407   0.00215197 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.06     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.71e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.26388 ( -0.262123  0.26254 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88201e-07 ( -2.34207e-08  2.36157e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.088 sec. to    1.088 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.675296     ( -0.865255   0.685866 )
Epeak [keV] : 109.743      ( -39.0273 -109.748 )
Norm@50keV  : 3.86748E-02    ( -0.0205596   0.0639996 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.91     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.04e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.21865 ( -0.26828  0.26814 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.80586e-07 ( -2.5811e-08  2.5572e-08 ) ergs/cm2
 
Band function
Time interval is from    0.088 sec. to    1.088 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97882   ( -2.09493   -4.97882 )
beta        : -1.47000    ( -0.31436   0.231804 )
Epeak [keV] : 29.4412      ( -8.03612 6.65878 )
Norm@50keV   : 641.749    ( -71.7889   3784.9 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.3408  (-2.31098  2.84654)
R^2/D10^2   : 0.202346  (-0.0854016   0.139949)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   73.36     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.12e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.112e-08   2.589e-09
25- 50  4.762e-08   7.575e-09
50-150  8.958e-08   2.081e-08
15-150  1.483e-07   2.175e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-40.4142      -200)
Norm        : 9.41022       (-1.07244     1.07244)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.61     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.80e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.343e-08   1.311e-08
25- 50  4.507e-08   2.473e-08
50-150  9.885e-08   5.410e-08
15-150  1.673e-07   9.215e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.65495        (-2.89146      3.22911)
R1^2/D10^2  : 0.814516        (-0.452515      1.41048)
kT2 [keV]   : 36.2410        (-25.947      157.319)
R2^2/D10^2  : 1.01572E-02    (-0.00987533   0.041925)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.47e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.711e-08   8.303e-09
25- 50  4.829e-08   2.526e-08
50-150  1.197e-07   6.353e-08
15-150  1.851e-07   8.865e-08
Plot creation:
Tue Jul 13 11:18:29 EDT 2021