batgrbproduct analysis for trigger=997453

batgrbproduct Analysis for Trigger=997453

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat Sep 26 18:39:29 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger997453/GCN5_download_cron
======================================================================

  Trigger: 00997453      Segment: 000

  BAT Trigger Time: 622763462.72   [s; MET]
      Trigger Stop: 622763463.744   [s; MET]
               UTC: 2020-09-25T21:50:37.022000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 246.851224404343   Dec: 78.3941848869908  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.68
     Image Trigger?:     NO
     Rate S/N Ratio:     11.8743420870379  [ if not an image trigger ]
     Image S/N Ratio:    7.68

  Flight Position:   [ source = BAT ]
    RA: 246.851224404343   Dec: 78.3941848869908  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 246.892318705906   Dec: 78.392656882136  [deg; J2000]  
        { 16h 27m 34.2s , +78d 23' 33.6" }
         +/- 1.2297472089438 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.442211535191318 [arcmin] (formal 1-sigma fit error)
    SNR: 22.6365391460665
 
  Angular difference between Flight and Ground position is 0.504468 arcmin
 
  Partial Coding Fraction: 0.5078125    [ including projection effects ]

  Duration
     T90: 18.2519999742508 +/- 0.974966696361147
        Measured from: 0.660000085830688
                   to: 18.9120000600815     [s; relative to TRIGTIME]
     T50: 5.08399999141693 +/- 1.89864154190994
        Measured from: 2.80000007152557
                   to: 7.8840000629425     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.38399994373322     
                   to: 5.38399994373322     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.199999928474426     
                   to: 19.5920000076294     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.667923   0.732180   0.363213   0.044562
           0.043092   0.044464   0.038541   0.034157 [error]
 Peak      0.133236   0.119588   0.080585   0.001795
           0.011454   0.012531   0.010512   0.008395 [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 2.24e-07 3.02e-07 3.00e-07 5.36e-07 1.00e-06 1.36e-06   erg/cm2
              Error 2.35e-08 2.23e-08 3.74e-08 1.32e-07 8.60e-08 1.73e-07   erg/cm2
Peak flux Power-law 1.32e+00 9.83e-01 4.87e-01 3.44e-01 2.95e+00 3.13e+00   ph/cm2/s
              Error 1.93e-01 1.04e-01 8.64e-02 1.14e-01 3.10e-01 3.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.10e-07 3.27e-07 2.89e-07 1.71e-07 9.32e-07 9.98e-07   erg/cm2
              Error 2.63e-08 2.97e-08 4.35e-08 1.67e-07 9.78e-08 1.97e-07   erg/cm2
Peak flux Cutoff-PL 1.24e+00 1.06e+00 4.95e-01 1.61e-01 2.90e+00 2.95e+00   ph/cm2/s
              Error 2.17e-01 1.35e-01 9.58e-02 1.51e-01 3.14e-01 3.45e-01   ph/cm2/s
 
Fluence        Band 2.08e-07 3.26e-07 2.89e-07 1.74e-07 9.31e-07 1.00e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.25e+00 1.04e+00 5.04e-01 2.13e-01 2.93e+00 3.01e+00   ph/cm2/s
              Error 2.20e-01 -------- -------- -------- 3.22e-01 3.62e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.011    0.137    -      -           5.59e-03 5.06e-04   61.000 57
CPL   1.307    0.600      41.0   14.2      1.42e-02 1.31e-02   56.180 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.013    0.193    -      -           1.96e-02 2.64e-03   66.050 57
CPL   1.382    0.731      42.7    0.0      4.45e-02 0.00e+00   63.500 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: 4.928000 sec.
T50 in the 50-300 keV band: 3.392000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   19.392    0.200   19.592
T90    18.252    0.660   18.912
T50     5.084    2.800    7.884
Peak    1.000    4.384    5.384

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  246.8923 +78.3927 0.0085   29.1  126.3       1.4038    22.6  TRIG_00997453       
------------------------------------------
 
Foreground time interval of the image:
  0.200   8.181 (delta_t =   7.981 [sec])
Background time interval of the image:
-239.720 -101.670 (delta_t = 138.050 [sec])
-100.720   0.200 (delta_t = 100.920 [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    0.200 sec. to   19.592 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01090     ( -0.134898   0.139792 )
Norm@50keV  : 5.59444E-03    ( -0.000510036   0.000502575 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.00 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     57 degrees of freedom 
# Null hypothesis probability =   3.342015e-01
 
Photon flux (15-150 keV)    in 19.39 sec: 0.843398 ( -0.0615951  0.061624 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00094e-06 ( -8.54298e-08  8.66582e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.200 sec. to   19.592 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30736     ( -0.642224   0.55723 )
Epeak [keV] : 41.0412      ( -14.0659 14.3629 )
Norm@50keV  : 1.42078E-02    ( -0.00729935   0.0189958 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.18 using 59 PHA bins.
# Reduced chi-squared =          1.003 for     56 degrees of freedom 
# Null hypothesis probability =   4.680376e-01
 
Photon flux (15-150 keV)    in 19.39 sec: 0.818761 ( -0.06422  0.064307 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.32463e-07 ( -9.57459e-08  9.99283e-08 ) ergs/cm2
 
Band function
Time interval is from    0.200 sec. to   19.592 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.89584   ( -6.00943   -4.28026 )
beta        : -2.20210    ( -0.230851   0.191067 )
Epeak [keV] : 25.1206      ( -3.8109 3.13135 )
Norm@50keV   : 24.9302    ( -24.9299   408.634 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.94 using 59 PHA bins.
# Reduced chi-squared =         0.9989 for     55 degrees of freedom 
# Null hypothesis probability =   4.770329e-01
 
Photon flux (15-150 keV)    in 19.39 sec: 0.824497 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.31276e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.93954  (-0.875801  0.962764)
R^2/D10^2   : 0.395483  (-0.118711   0.169837)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          90.30 using 59 PHA bins.
# Reduced chi-squared =          1.584 for     57 degrees of freedom 
# Null hypothesis probability =   3.266231e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.540e-07   2.008e-08
25- 50  3.795e-07   3.170e-08
50-150  1.946e-07   3.910e-08
15-150  7.281e-07   6.709e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 64.6205       (-13.1225      18.2324)
Norm        : 4.27029       (-0.503141     0.548067)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.15 using 59 PHA bins.
# Reduced chi-squared =         0.9851 for     57 degrees of freedom 
# Null hypothesis probability =   5.069197e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.104e-07   2.199e-08
25- 50  3.274e-07   2.356e-08
50-150  3.955e-07   7.106e-08
15-150  9.333e-07   8.793e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.56698        (-1.05444      1.18583)
R1^2/D10^2  : 2.48134        (-1.22691      3.00469)
kT2 [keV]   : 17.6318        (-3.27277      5.25868)
R2^2/D10^2  : 3.08488E-02    (-0.0203942   0.0431194)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.41 using 59 PHA bins.
# Reduced chi-squared =         0.9711 for     55 degrees of freedom 
# Null hypothesis probability =   5.354982e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.139e-07   6.843e-08
25- 50  3.195e-07   9.626e-08
50-150  3.928e-07   1.995e-07
15-150  9.262e-07   3.195e-07

Peak spectrum fit

Power-law model
Time interval is from    4.384 sec. to    5.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01332     ( -0.186992   0.199944 )
Norm@50keV  : 1.95566E-02    ( -0.00267042   0.00260506 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.05 using 59 PHA bins.
# Reduced chi-squared =          1.159 for     57 degrees of freedom 
# Null hypothesis probability =   1.927138e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.95161 ( -0.310273  0.310295 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.80497e-07 ( -2.28911e-08  2.32809e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    4.384 sec. to    5.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38212     ( -0.785481   0.676014 )
Epeak [keV] : 42.7316      (   )
Norm@50keV  : 4.44842E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.50 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     56 degrees of freedom 
# Null hypothesis probability =   2.291646e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.90304 ( -0.31356  0.31386 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72866e-07 ( -2.3624e-08  2.4458e-08 ) ergs/cm2
 
Band function
Time interval is from    4.384 sec. to    5.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.38126   ( -3.72022   0.746796 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 42.7203      ( -32.4624 -42.7203 )
Norm@50keV   : 4.45296E-02    ( -0.0212332   0.0777682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.50 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     55 degrees of freedom 
# Null hypothesis probability =   2.018953e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.92850 ( 4.0715  -0.3444 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72509e-07 ( -1.72502e-07  -2.3206e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.5921  (-1.46164  1.63817)
R^2/D10^2   : 1.11126  (-0.459592   0.826179)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.71 using 59 PHA bins.
# Reduced chi-squared =          1.539 for     57 degrees of freedom 
# Null hypothesis probability =   5.564092e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.583e-08   4.985e-09
25- 50  6.950e-08   9.170e-09
50-150  4.275e-08   1.080e-08
15-150  1.381e-07   2.080e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 67.6050       (-18.237      28.8391)
Norm        : 14.8145       (-2.29484     2.65836)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.59 using 59 PHA bins.
# Reduced chi-squared =          1.116 for     57 degrees of freedom 
# Null hypothesis probability =   2.557468e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.786e-08   5.285e-09
25- 50  5.966e-08   7.150e-09
50-150  7.465e-08   2.084e-08
15-150  1.722e-07   2.570e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.53426        (-1.01583      1.25124)
R1^2/D10^2  : 19.7538        (-12.4777      42.0907)
kT2 [keV]   : 16.9187        (-2.98878      4.11844)
R2^2/D10^2  : 0.147948    (-0.0868203   0.147483)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.86 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     55 degrees of freedom 
# Null hypothesis probability =   3.362331e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.058e-08   1.836e-08
25- 50  5.433e-08   1.962e-08
50-150  7.808e-08   4.027e-08
15-150  1.730e-07   6.518e-08
Plot creation:
Sat Sep 26 18:44:36 EDT 2020