batgrbproduct analysis for trigger=977310

batgrbproduct Analysis for Trigger=977310

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.47
    Process Start Time (local time): Sat Jun 13 20:09:17 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger977310/GCN5_download_cron
======================================================================

  Trigger: 00977310      Segment: 000

  BAT Trigger Time: 613629602.24   [s; MET]
      Trigger Stop: 613629604.288   [s; MET]
               UTC: 2020-06-12T04:39:37.140020    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 302.681184324407   Dec: -45.3569592690613  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.04
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0995049383621  [ if not an image trigger ]
     Image S/N Ratio:    8.04

  Flight Position:   [ source = BAT ]
    RA: 302.681184324407   Dec: -45.3569592690613  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 302.695629381764   Dec: -45.3501272229642  [deg; J2000]  
        { 20h 10m 47.0s , -45d 21' 00.5" }
         +/- 1.26478180919107 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.444902499156139 [arcmin] (formal 1-sigma fit error)
    SNR: 21.746120652714
 
  Angular difference between Flight and Ground position is 0.734159 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 424.635999917984 +/- 9.07222305126204
        Measured from: -1.5919998884201
                   to: 423.044000029564     [s; relative to TRIGTIME]
     T50: 263.939999938011 +/- 122.588915001396
        Measured from: 24.0040000677109
                   to: 287.944000005722     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.03199994564056     
                   to: 5.03199994564056     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -11.1879999637604     
                   to: 429.819999933243     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.217682   2.978109   2.631060   0.636856
           0.133756   0.136953   0.123569   0.119513 [error]
 Peak      0.017548   0.038745   0.030024   0.014243
           0.006664   0.007058   0.006474   0.006095 [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 6.15e-07 1.24e-06 1.95e-06 6.80e-06 5.44e-06 1.06e-05   erg/cm2
              Error 5.74e-08 6.73e-08 1.23e-07 9.70e-07 3.01e-07 1.05e-06   erg/cm2
Peak flux Power-law 1.99e-01 2.30e-01 1.92e-01 2.70e-01 7.18e-01 8.91e-01   ph/cm2/s
              Error 7.79e-02 5.54e-02 5.19e-02 1.56e-01 1.57e-01 2.11e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.70e-07 1.28e-06 2.00e-06 4.07e-06 5.28e-06 7.91e-06   erg/cm2
              Error 7.20e-08 7.67e-08 1.35e-07 1.53e-06 3.41e-07 2.05e-06   erg/cm2
Peak flux Cutoff-PL 1.87e-01 2.37e-01 1.97e-01 1.88e-01 7.09e-01 8.09e-01   ph/cm2/s
              Error 8.79e-02 6.26e-02 5.75e-02 1.74e-01 1.62e-01 2.56e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.88e-01 2.36e-01 1.97e-01 1.95e-01 7.10e-01 8.16e-01   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    1.346    0.091    -      -           1.29e-03 6.35e-05   55.650 57
CPL   0.984    0.375     147.9 1060.2      1.92e-03 7.99e-04   52.680 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.263    0.389    -      -           6.06e-03 1.33e-03   49.110 57
CPL   0.961    1.658     176.3    0.0      8.54e-03 2.19e-02   48.940 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: 114.240000 sec.
T50 in the 50-300 keV band: 40.192000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  441.008  -11.188  429.820
T90   424.636   -1.592  423.044
T50   263.940   24.004  287.944
Peak    1.000    4.032    5.032

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  302.6956 -45.3501 0.0089   15.6   33.2       1.7295    21.7  TRIG_00977310       
------------------------------------------
 
Foreground time interval of the image:
-11.188  22.661 (delta_t =  33.849 [sec])
Background time interval of the image:
-235.139 -234.010 (delta_t =   1.129 [sec])
-233.240 -231.120 (delta_t =   2.120 [sec])
-229.240 -229.020 (delta_t =   0.220 [sec])
-222.240 -220.810 (delta_t =   1.430 [sec])
-219.240 -218.896 (delta_t =   0.344 [sec])
-217.240 -217.232 (delta_t =   0.008 [sec])
-216.240 -215.350 (delta_t =   0.890 [sec])
-211.240 -211.216 (delta_t =   0.024 [sec])
-210.240 -209.930 (delta_t =   0.310 [sec])
-208.240 -208.100 (delta_t =   0.140 [sec])
-206.240 -203.970 (delta_t =   2.270 [sec])
-203.240 -201.930 (delta_t =   1.310 [sec])
-200.240 -197.880 (delta_t =   2.360 [sec])
-197.240 -192.060 (delta_t =   5.180 [sec])
-189.240 -188.550 (delta_t =   0.690 [sec])
-186.240 -185.990 (delta_t =   0.250 [sec])
-184.240 -11.188 (delta_t = 173.052 [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
-11.188000 75.190000
76.760000 141.730000
142.760000 288.970000
289.760000 292.450000
294.760000 294.850000
295.760000 296.300000
298.760000 299.030000
300.760000 429.820000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34631     ( -0.0914167   0.0913745 )
Norm@50keV  : 1.29288E-03    ( -6.35691e-05   6.34985e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.65 using 59 PHA bins.
# Reduced chi-squared =         0.9763 for     57 degrees of freedom 
# Null hypothesis probability =   5.257944e-01
 
Photon flux (15-150 keV)    in 430.2 sec: 0.155637 ( -0.00785476  0.00786758 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.43678e-06 ( -3.0029e-07  3.02131e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-11.188000 75.190000
76.760000 141.730000
142.760000 288.970000
289.760000 292.450000
294.760000 294.850000
295.760000 296.300000
298.760000 299.030000
300.760000 429.820000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.984218     ( -0.392524   0.35714 )
Epeak [keV] : 147.888      ( -51.0042 2069.37 )
Norm@50keV  : 1.92324E-03    ( -0.000600113   0.000997517 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.68 using 59 PHA bins.
# Reduced chi-squared =         0.9408 for     56 degrees of freedom 
# Null hypothesis probability =   6.012457e-01
 
Photon flux (15-150 keV)    in 430.2 sec: 0.152142 ( -0.008571  0.008551 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.2798e-06 ( -3.40934e-07  3.40503e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-11.188000 75.190000
76.760000 141.730000
142.760000 288.970000
289.760000 292.450000
294.760000 294.850000
295.760000 296.300000
298.760000 299.030000
300.760000 429.820000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.984200   ( -0.321863   0.575758 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 147.860      ( -32.1125 2138.33 )
Norm@50keV   : 1.92313E-03    ( -0.000600309   0.000997589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.68 using 59 PHA bins.
# Reduced chi-squared =         0.9579 for     55 degrees of freedom 
# Null hypothesis probability =   5.636937e-01
 
Photon flux (15-150 keV)    in 430.2 sec: 0.153178 (    ) 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]    : 17.2146  (  )
R^2/D10^2   : 1.11459E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         116.58 using 59 PHA bins.
# Reduced chi-squared =         2.0453 for     57 degrees of freedom 
# Null hypothesis probability =   5.574793e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.884e-07   2.803e-08
25- 50  1.289e-06   9.744e-08
50-150  2.737e-06   2.588e-07
15-150  4.314e-06   2.697e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-13.5298      -200)
Norm        : 0.643134       (-0.0315612     0.0315612)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.74 using 59 PHA bins.
# Reduced chi-squared =          1.188 for     57 degrees of freedom 
# Null hypothesis probability =   1.560621e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.891e-07   3.700e-08
25- 50  1.326e-06   8.131e-08
50-150  2.907e-06   2.039e-07
15-150  4.922e-06   3.270e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.40411        (-1.1073      1.50091)
R1^2/D10^2  : 0.317681        (-0.188809      0.511894)
kT2 [keV]   : 22.8415        (-2.41511      3.50159)
R2^2/D10^2  : 3.82877E-03    (-0.0015442   0.00188291)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.99 using 59 PHA bins.
# Reduced chi-squared =         0.9453 for     55 degrees of freedom 
# Null hypothesis probability =   5.902630e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.054e-07   1.983e-07
25- 50  1.198e-06   1.800e-07
50-150  3.312e-06   4.160e-07
15-150  5.116e-06   6.844e-07

Peak spectrum fit

Power-law model
Time interval is from    4.032 sec. to    5.032 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26293     ( -0.391128   0.387594 )
Norm@50keV  : 6.06145E-03    ( -0.00133591   0.00132849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.11 using 59 PHA bins.
# Reduced chi-squared =         0.8616 for     57 degrees of freedom 
# Null hypothesis probability =   7.619805e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.718439 ( -0.157302  0.157592 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.04586e-08 ( -1.50967e-08  1.55326e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    4.032 sec. to    5.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.961457     ( -1.58518   1.73173 )
Epeak [keV] : 176.346      ( -174.971 -174.971 )
Norm@50keV  : 8.53725E-03    ( -0.0038178   0.0399127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.94 using 59 PHA bins.
# Reduced chi-squared =         0.8739 for     56 degrees of freedom 
# Null hypothesis probability =   7.368661e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.708841 ( -0.162069  0.161943 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.90243e-08 ( -1.63272e-08  1.64816e-08 ) ergs/cm2
 
Band function
Time interval is from    4.032 sec. to    5.032 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.953983   ( -0.667258   1.43865 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 174.195      ( -112.567 -174.195 )
Norm@50keV   : 8.61932E-03    ( -0.00383163   0.0399261 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.94 using 59 PHA bins.
# Reduced chi-squared =         0.8898 for     55 degrees of freedom 
# Null hypothesis probability =   7.041518e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.709748 (    ) 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]    : 18.1703  (-5.396  7.63145)
R^2/D10^2   : 4.40765E-02  (-0.0294202   0.0969982)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.06 using 59 PHA bins.
# Reduced chi-squared =         0.9484 for     57 degrees of freedom 
# Null hypothesis probability =   5.860811e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.905e-09   1.513e-09
25- 50  1.353e-08   5.582e-09
50-150  3.250e-08   1.638e-08
15-150  4.893e-08   2.340e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-91.5043      -199.363)
Norm        : 2.93257       (-0.643697     0.643697)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.41 using 59 PHA bins.
# Reduced chi-squared =         0.8845 for     57 degrees of freedom 
# Null hypothesis probability =   7.187807e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.302e-09   4.428e-09
25- 50  1.405e-08   8.340e-09
50-150  3.081e-08   1.801e-08
15-150  5.216e-08   3.064e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.82307        (-2.90353      4.59218)
R1^2/D10^2  : 0.732790        (-0.602323      4.56652)
kT2 [keV]   : 29.7166        (-11.0272      46.1082)
R2^2/D10^2  : 7.50487E-03    (-0.0068163   0.0270413)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.53 using 59 PHA bins.
# Reduced chi-squared =         0.8642 for     55 degrees of freedom 
# Null hypothesis probability =   7.526061e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.376e-09   3.609e-09
25- 50  1.335e-08   7.300e-09
50-150  4.117e-08   2.394e-08
15-150  6.090e-08   3.281e-08
Plot creation:
Sat Jun 13 20:14:54 EDT 2020