batgrbproduct analysis for trigger=956639

batgrbproduct Analysis for Trigger=956639

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Feb 16 19:27:16 EST 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger956639/GCN5_download_cron
======================================================================

  Trigger: 00956639      Segment: 000

  BAT Trigger Time: 603470396.416   [s; MET]
      Trigger Stop: 603470397.44   [s; MET]
               UTC: 2020-02-15T14:39:31.975900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 34.1217781187011   Dec: 12.7806238069698  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    16.49
     Image Trigger?:     NO
     Rate S/N Ratio:     37.1214223865412  [ if not an image trigger ]
     Image S/N Ratio:    16.49

  Flight Position:   [ source = BAT ]
    RA: 34.1217781187011   Dec: 12.7806238069698  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 34.1003946152986   Dec: 12.7754633163133  [deg; J2000]  
        { 02h 16m 24.1s , +12d 46' 31.7" }
         +/- 0.981454327619414 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.352535634970187 [arcmin] (formal 1-sigma fit error)
    SNR: 31.2415470049829
 
  Angular difference between Flight and Ground position is 1.288977 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 11.6719999313354 +/- 2.18904625118654
        Measured from: -7.29999983310699
                   to: 4.37200009822845     [s; relative to TRIGTIME]
     T50: 3.70799994468689 +/- 0.620735053200126
        Measured from: -2.08799993991852
                   to: 1.62000000476837     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.159999966621399     
                   to: 0.840000033378601     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.97200000286102     
                   to: 5.36800003051758     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.406676   0.657874   0.510885   0.128607
           0.029434   0.031151   0.027979   0.023393 [error]
 Peak      0.071377   0.120232   0.112199   0.043022
           0.008417   0.009415   0.009069   0.007145 [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 1.36e-07 2.65e-07 4.00e-07 1.31e-06 1.12e-06 2.11e-06   erg/cm2
              Error 1.34e-08 1.58e-08 2.69e-08 1.93e-07 6.65e-08 2.11e-07   erg/cm2
Peak flux Power-law 7.25e-01 8.68e-01 7.51e-01 1.11e+00 2.74e+00 3.45e+00   ph/cm2/s
              Error 1.13e-01 8.27e-02 7.09e-02 2.21e-01 2.29e-01 2.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.27e-07 2.74e-07 4.11e-07 8.00e-07 1.10e-06 1.61e-06   erg/cm2
              Error 1.60e-08 1.84e-08 3.00e-08 2.94e-07 7.17e-08 3.89e-07   erg/cm2
Peak flux Cutoff-PL 7.02e-01 8.79e-01 7.64e-01 9.40e-01 2.72e+00 3.29e+00   ph/cm2/s
              Error 1.32e-01 9.12e-02 8.36e-02 3.93e-01 2.33e-01 4.54e-01   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    1.406    0.094    -      -           7.58e-03 4.11e-04   62.450 57
CPL   1.055    0.369     141.1 1465.9      1.12e-02 4.68e-03   59.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.209    0.141    -      -           2.33e-02 1.90e-03   46.410 57
CPL   1.061    0.419     345.2    0.0      2.74e-02 1.41e-02   46.180 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: 12.672000 sec.
T50 in the 50-300 keV band: 2.432000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   15.340   -9.972    5.368
T90    11.672   -7.300    4.372
T50     3.708   -2.088    1.620
Peak    1.000   -0.160    0.840

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   34.1004 +12.7755 0.0062   34.1 -167.8       1.7725    31.2  TRIG_00956639       
------------------------------------------
 
Foreground time interval of the image:
 -9.972   5.368 (delta_t =  15.340 [sec])
Background time interval of the image:
-239.416 -55.846 (delta_t = 183.570 [sec])
-54.416  -9.972 (delta_t =  44.444 [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   -9.972 sec. to    5.368 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40601     ( -0.0944379   0.0943413 )
Norm@50keV  : 7.58455E-03    ( -0.000411316   0.000411101 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.45 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.887354e-01
 
Photon flux (15-150 keV)    in 15.34 sec: 0.924925 ( -0.0520805  0.0521673 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12285e-06 ( -6.63455e-08  6.65917e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -9.972 sec. to    5.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05499     ( -0.385823   0.352342 )
Epeak [keV] : 141.143      ( -48.4588 2883.35 )
Norm@50keV  : 1.12336E-02    ( -0.00351503   0.00584312 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.57 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     56 degrees of freedom 
# Null hypothesis probability =   3.472116e-01
 
Photon flux (15-150 keV)    in 15.34 sec: 0.909801 ( -0.054169  0.054209 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09818e-06 ( -7.1871e-08  7.15488e-08 ) ergs/cm2
 
Band function
Time interval is from   -9.972 sec. to    5.368 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.05926   ( -0.221131   0.381658 )
beta        : -9.37125    ( 9.37158   19.3716 )
Epeak [keV] : 142.690      ( -59.8971 2949.47 )
Norm@50keV   : 1.11706E-02    ( -0.00223073   0.00449565 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.57 using 59 PHA bins.
# Reduced chi-squared =          1.083 for     55 degrees of freedom 
# Null hypothesis probability =   3.130567e-01
 
Photon flux (15-150 keV)    in 15.34 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]    : 16.4218  (  )
R^2/D10^2   : 7.77232E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         131.01 using 59 PHA bins.
# Reduced chi-squared =         2.2984 for     57 degrees of freedom 
# Null hypothesis probability =   9.314964e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.608e-08   7.041e-09
25- 50  2.842e-07   1.941e-08
50-150  5.409e-07   5.906e-08
15-150  8.912e-07   5.653e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-18.1571      -200)
Norm        : 3.83931       (-0.207669     0.207669)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.06 using 59 PHA bins.
# Reduced chi-squared =          1.176 for     57 degrees of freedom 
# Null hypothesis probability =   1.702179e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.467e-07   8.652e-09
25- 50  2.822e-07   1.787e-08
50-150  6.189e-07   1.111e-07
15-150  1.048e-06   7.570e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.12034        (-1.26045      1.3711)
R1^2/D10^2  : 0.564048        (-0.218285      0.410162)
kT2 [keV]   : 30.8657        (-5.29816      8.72651)
R2^2/D10^2  : 7.02202E-03    (-0.00391567   0.00665243)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.84 using 59 PHA bins.
# Reduced chi-squared =         0.9972 for     55 degrees of freedom 
# Null hypothesis probability =   4.805594e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.201e-07   2.488e-08
25- 50  2.857e-07   5.055e-08
50-150  7.064e-07   2.126e-07
15-150  1.112e-06   2.550e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.160 sec. to    0.840 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20919     ( -0.141292   0.140107 )
Norm@50keV  : 2.32752E-02    ( -0.00189517   0.00189517 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.41 using 59 PHA bins.
# Reduced chi-squared =         0.8143 for     57 degrees of freedom 
# Null hypothesis probability =   8.406271e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.73562 ( -0.229191  0.229456 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.35529e-07 ( -2.12554e-08  2.13517e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.160 sec. to    0.840 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06064     ( -0.565777   0.27288 )
Epeak [keV] : 345.171      ( -345.172 -345.172 )
Norm@50keV  : 2.73771E-02    ( -0.00577472   0.0223548 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.18 using 59 PHA bins.
# Reduced chi-squared =         0.8246 for     56 degrees of freedom 
# Null hypothesis probability =   8.224906e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.72151 ( -0.23228  0.23397 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33913e-07 ( -2.2341e-08  2.21e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.160 sec. to    0.840 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.51986E-02   ( 0.689545   5.68117 )
beta        : -1.27078    ( 1.26602   0.184161 )
Epeak [keV] : 50.2651      ( -49.993 195.024 )
Norm@50keV   : 0.152325    ( -0.16012   747.386 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.76 using 59 PHA bins.
# Reduced chi-squared =         0.8319 for     55 degrees of freedom 
# Null hypothesis probability =   8.083336e-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]    : 18.9546  (-2.02531  2.35542)
R^2/D10^2   : 0.150609  (-0.0484897   0.0688628)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.98 using 59 PHA bins.
# Reduced chi-squared =          1.403 for     57 degrees of freedom 
# Null hypothesis probability =   2.401711e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.065e-08   1.854e-09
25- 50  5.111e-08   6.465e-09
50-150  1.349e-07   1.820e-08
15-150  1.967e-07   2.070e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-19.3036      -200)
Norm        : 11.3014       (-0.939335     0.939335)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.72 using 59 PHA bins.
# Reduced chi-squared =          1.100 for     57 degrees of freedom 
# Null hypothesis probability =   2.806354e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.814e-08   3.355e-09
25- 50  5.412e-08   8.140e-09
50-150  1.187e-07   4.352e-08
15-150  2.010e-07   4.720e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.13489        (-2.02501      2.42815)
R1^2/D10^2  : 1.48654        (-0.811766      2.30123)
kT2 [keV]   : 34.2261        (-8.09474      18.8362)
R2^2/D10^2  : 1.81721E-02    (-0.0131161   0.0264847)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.05 using 59 PHA bins.
# Reduced chi-squared =         0.8191 for     55 degrees of freedom 
# Null hypothesis probability =   8.284237e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.107e-08   7.510e-09
25- 50  5.229e-08   1.672e-08
50-150  1.632e-07   7.553e-08
15-150  2.365e-07   8.937e-08
Plot creation:
Sun Feb 16 19:30:24 EST 2020