batgrbproduct analysis for trigger=987016

batgrbproduct Analysis for Trigger=987016

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.47
    Process Start Time (local time): Fri Aug  7 15:55:20 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger987016/GCN5_download_cron
======================================================================

  Trigger: 00987016      Segment: 000

  BAT Trigger Time: 618420555.328   [s; MET]
      Trigger Stop: 618420555.84   [s; MET]
               UTC: 2020-08-06T15:28:49.915180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 52.9051939418572   Dec: 37.0819682887688  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.05
     Image Trigger?:     NO
     Rate S/N Ratio:     24.576411454889  [ if not an image trigger ]
     Image S/N Ratio:    11.05

  Flight Position:   [ source = BAT ]
    RA: 52.9051939418572   Dec: 37.0819682887688  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 52.9322784346353   Dec: 37.0761000477783  [deg; J2000]  
        { 03h 31m 43.7s , +37d 04' 34.0" }
         +/- 0.765239717161303 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.267510778358939 [arcmin] (formal 1-sigma fit error)
    SNR: 44.5781404118772
 
  Angular difference between Flight and Ground position is 1.343448 arcmin
 
  Partial Coding Fraction: 0.578125    [ including projection effects ]

  Duration
     T90: 38.9199999570847 +/- 1.07465331014928
        Measured from: 3.35600018501282
                   to: 42.2760001420975     [s; relative to TRIGTIME]
     T50: 14.5800000429153 +/- 0.356740810112865
        Measured from: 18.5640001296997
                   to: 33.1440001726151     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 22.2440000772476     
                   to: 23.2440000772476     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.131999969482422     
                   to: 61.2240000963211     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.357781   7.949730   7.987927   2.227801
           0.062519   0.072551   0.070577   0.053798 [error]
 Peak      0.240578   0.523423   0.708440   0.284734
           0.011722   0.015530   0.017737   0.013052 [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 1.70e-06 3.60e-06 5.99e-06 2.26e-05 1.65e-05 3.39e-05   erg/cm2
              Error 5.44e-08 6.96e-08 8.89e-08 7.67e-07 2.35e-07 7.90e-07   erg/cm2
Peak flux Power-law 2.55e+00 3.94e+00 4.56e+00 1.02e+01 1.40e+01 2.12e+01   ph/cm2/s
              Error 1.71e-01 1.62e-01 1.39e-01 6.71e-01 4.33e-01 7.28e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.42e-06 3.63e-06 6.40e-06 1.34e-05 1.63e-05 2.49e-05   erg/cm2
              Error 7.28e-08 7.35e-08 1.22e-07 1.34e-06 2.41e-07 1.34e-06   erg/cm2
Peak flux Cutoff-PL 2.30e+00 3.97e+00 4.78e+00 7.60e+00 1.39e+01 1.86e+01   ph/cm2/s
              Error 2.26e-01 1.69e-01 1.93e-01 1.38e+00 4.39e-01 1.43e+00   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    1.266    0.025    -      -           2.70e-02 4.06e-04  112.430 57
CPL   0.716    0.116     147.9   18.5      4.46e-02 4.62e-03   40.210 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.788    0.052    -      -           1.22e-01 3.85e-03   46.790 57
CPL   0.453    0.217     291.6  226.2      1.67e-01 3.33e-02   39.310 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: 35.008000 sec.
T50 in the 50-300 keV band: 14.592000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   61.356   -0.132   61.224
T90    38.920    3.356   42.276
T50    14.580   18.564   33.144
Peak    1.000   22.244   23.244

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   52.9323 +37.0761 0.0044   38.5  -24.8       2.6095    44.6  TRIG_00987016       
------------------------------------------
 
Foreground time interval of the image:
 -0.132   8.973 (delta_t =   9.105 [sec])
Background time interval of the image:
-239.328 -30.998 (delta_t = 208.330 [sec])
-29.328 -16.248 (delta_t =  13.080 [sec])
-15.328  -0.132 (delta_t =  15.196 [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
Time interval is from   -0.132 sec. to   61.224 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26593     ( -0.0254022   0.0253155 )
Norm@50keV  : 2.69644E-02    ( -0.000406666   0.000406079 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         112.43 using 59 PHA bins.
# Reduced chi-squared =         1.9724 for     57 degrees of freedom 
# Null hypothesis probability =   1.689785e-05
 
Photon flux (15-150 keV)    in 61.36 sec: 3.19761 ( -0.0543376  0.0544541 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.649e-05 ( -2.34962e-07  2.34971e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.132 sec. to   61.224 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.716300     ( -0.117123   0.114486 )
Epeak [keV] : 147.943      ( -15.031 22.0464 )
Norm@50keV  : 4.46439E-02    ( -0.00434278   0.00490627 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.21 using 59 PHA bins.
# Reduced chi-squared =         0.7180 for     56 degrees of freedom 
# Null hypothesis probability =   9.448643e-01
 
Photon flux (15-150 keV)    in 61.36 sec: 3.07745 ( -0.05782  0.05814 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.628e-05 ( -2.41206e-07  2.40961e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.132 sec. to   61.224 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.716264   ( -0.0893991   0.124062 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 147.918      ( -8.13479 22.0358 )
Norm@50keV   : 4.46435E-02    ( -0.00434367   0.00490791 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.21 using 59 PHA bins.
# Reduced chi-squared =         0.7310 for     55 degrees of freedom 
# Null hypothesis probability =   9.327331e-01
 
Photon flux (15-150 keV)    in 61.36 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]    : 21.5496  (  )
R^2/D10^2   : 0.113720  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         661.45 using 59 PHA bins.
# Reduced chi-squared =         11.604 for     57 degrees of freedom 
# Null hypothesis probability =  8.552163e-104
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.053e-07   1.896e-08
25- 50  3.161e-06   7.302e-08
50-150  1.096e-05   2.148e-07
15-150  1.473e-05   2.240e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 14.1566       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         564.67 using 59 PHA bins.
# Reduced chi-squared =         9.9064 for     57 degrees of freedom 
# Null hypothesis probability =   1.163459e-84
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.163e-06   3.590e-08
25- 50  4.161e-06   6.780e-08
50-150  9.125e-06   1.565e-07
15-150  1.545e-05   2.516e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.67384        (-0.697545      0.731467)
R1^2/D10^2  : 0.854192        (-0.159977      0.212361)
kT2 [keV]   : 32.5621        (-1.85659      2.28801)
R2^2/D10^2  : 2.28451E-02    (-0.00501436   0.00556221)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.16 using 59 PHA bins.
# Reduced chi-squared =         0.8029 for     55 degrees of freedom 
# Null hypothesis probability =   8.521946e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.208e-06   7.148e-08
25- 50  3.746e-06   1.089e-07
50-150  1.126e-05   3.099e-07
15-150  1.622e-05   4.541e-07

Peak spectrum fit

Power-law model
Time interval is from   22.244 sec. to   23.244 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.788023     ( -0.0522596   0.0517593 )
Norm@50keV  : 0.122170    ( -0.00385649   0.00384352 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.79 using 59 PHA bins.
# Reduced chi-squared =         0.8209 for     57 degrees of freedom 
# Null hypothesis probability =   8.306593e-01
 
Photon flux (15-150 keV)    in 1 sec: 14.0477 ( -0.4331  0.433402 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43491e-06 ( -4.53103e-08  4.53376e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   22.244 sec. to   23.244 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.453106     ( -0.222513   0.211584 )
Epeak [keV] : 291.589      ( -90.3599 361.986 )
Norm@50keV  : 0.167172    ( -0.0294076   0.0372541 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.31 using 59 PHA bins.
# Reduced chi-squared =         0.7019 for     56 degrees of freedom 
# Null hypothesis probability =   9.557765e-01
 
Photon flux (15-150 keV)    in 1 sec: 13.9188 ( -0.4392  0.4396 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42921e-06 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   22.244 sec. to   23.244 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.854896   ( 0.854901   0.854901 )
beta        : -0.788029    ( -0.0517266   0.0523065 )
Epeak [keV] : 15.5843      ( -15.5843 -15.5843 )
Norm@50keV   : 0.175273    ( -0.0368579   2.89898e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.79 using 59 PHA bins.
# Reduced chi-squared =         0.8507 for     55 degrees of freedom 
# Null hypothesis probability =   7.767187e-01
 
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]    : 26.7204  (  )
R^2/D10^2   : 0.300617  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         161.39 using 59 PHA bins.
# Reduced chi-squared =         2.8314 for     57 degrees of freedom 
# Null hypothesis probability =   6.480512e-12
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.595e-08   2.165e-09
25- 50  2.107e-07   1.010e-08
50-150  1.102e-06   4.650e-08
15-150  1.349e-06   4.350e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 54.8684       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         610.74 using 59 PHA bins.
# Reduced chi-squared =         10.715 for     57 degrees of freedom 
# Null hypothesis probability =   9.879470e-94
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.366e-07   4.950e-09
25- 50  2.628e-07   9.400e-09
50-150  5.764e-07   1.850e-08
15-150  9.759e-07   3.345e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.1225        (-1.75446      2.08673)
R1^2/D10^2  : 2.46161        (-0.915308      1.7088)
kT2 [keV]   : 40.7242        (-5.02247      8.64053)
R2^2/D10^2  : 7.51794E-02    (-0.032874   0.0382159)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.11 using 59 PHA bins.
# Reduced chi-squared =         0.7293 for     55 degrees of freedom 
# Null hypothesis probability =   9.341557e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.746e-08   8.500e-09
25- 50  2.393e-07   2.540e-08
50-150  1.134e-06   1.374e-07
15-150  1.441e-06   1.585e-07
Plot creation:
Fri Aug  7 15:58:43 EDT 2020