batgrbproduct analysis for trigger=794972

batgrbproduct Analysis for Trigger=794972

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Dec  6 03:27:46 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger794972/GCN5_download_cron
======================================================================

  Trigger: 00794972      Segment: 000

  BAT Trigger Time: 534151264   [s; MET]
      Trigger Stop: 534151328   [s; MET]
               UTC: 2017-12-05T07:20:43.893380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 167.44703797704   Dec: -12.603638059632  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.46
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.46

  Flight Position:   [ source = BAT ]
    RA: 167.44703797704   Dec: -12.603638059632  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 167.422778262044   Dec: -12.5995378829849  [deg; J2000]  
        { 11h 09m 41.5s , -12d 35' 58.3" }
         +/- 1.592213904898 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.69089652597956 [arcmin] (formal 1-sigma fit error)
    SNR: 15.6511024331472
 
  Angular difference between Flight and Ground position is 1.441664 arcmin
 
  Partial Coding Fraction: 0.4648438    [ including projection effects ]

  Duration
     T90: 189.191999912262 +/- 35.1681973037813
        Measured from: -26.1999998688698
                   to: 162.992000043392     [s; relative to TRIGTIME]
     T50: 71.4639999866486 +/- 18.8398879614873
        Measured from: -4.41999989748001
                   to: 67.0440000891685     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 49.0759999752045     
                   to: 50.0759999752045     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -42.227999985218     
                   to: 197.796000003815     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.386899   1.587910   1.732591   0.518351
           0.131071   0.136243   0.119372   0.102789 [error]
 Peak      0.047236   0.009111   0.044484  -0.004354
           0.010081   0.010291   0.009437   0.008064 [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 4.35e-07 8.42e-07 1.26e-06 4.09e-06 3.55e-06 6.62e-06   erg/cm2
              Error 6.40e-08 7.35e-08 1.14e-07 8.29e-07 2.84e-07 8.93e-07   erg/cm2
Peak flux Power-law 4.18e-01 3.17e-01 1.60e-01 1.17e-01 9.49e-01 1.01e+00   ph/cm2/s
              Error 1.97e-01 9.13e-02 8.44e-02 1.24e-01 2.77e-01 2.93e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.15e-07 8.53e-07 1.29e-06 3.22e-06 3.53e-06 5.78e-06   erg/cm2
              Error 8.10e-08 7.98e-08 1.35e-07 1.26e-06 2.94e-07 1.58e-06   erg/cm2
Peak flux Cutoff-PL 4.45e-01 3.15e-01 1.47e-01 9.63e-02 9.54e-01 1.01e+00   ph/cm2/s
              Error 2.06e-01 9.33e-02 8.63e-02 1.38e-01 2.75e-01 2.25e-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    1.416    0.135    -      -           1.54e-03 1.16e-04   61.920 57
CPL   1.225    0.441     231.4    0.0      1.87e-03 0.00e+00   61.530 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.981    0.706    -      -           6.38e-03 2.53e-03   63.730 57
CPL   4.865    0.710     587.1   -0.0      3.27e-04 2.26e-03   60.630 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: 176.128000 sec.
T50 in the 50-300 keV band: 76.096000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  240.024  -42.228  197.796
T90   189.192  -26.200  162.992
T50    71.464   -4.420   67.044
Peak    1.000   49.076   50.076

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  167.4228 -12.5995 0.0123   44.5   -2.2       3.9331    15.7  TRIG_00794972       
------------------------------------------
 
Foreground time interval of the image:
-42.228  72.301 (delta_t = 114.529 [sec])
Background time interval of the image:
-239.000 -42.228 (delta_t = 196.772 [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  -42.228 sec. to  197.796 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41629     ( -0.135305   0.135026 )
Norm@50keV  : 1.53627E-03    ( -0.000115927   0.000115927 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.92 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     57 degrees of freedom 
# Null hypothesis probability =   3.050664e-01
 
Photon flux (15-150 keV)    in 240 sec: 0.187793 ( -0.0153445  0.0154389 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.55102e-06 ( -2.83435e-07  2.84441e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -42.228 sec. to  197.796 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22478     ( -0.573001   0.30834 )
Epeak [keV] : 231.363      ( -231.309 -231.309 )
Norm@50keV  : 1.87253E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.53 using 59 PHA bins.
# Reduced chi-squared =          1.099 for     56 degrees of freedom 
# Null hypothesis probability =   2.848717e-01
 
Photon flux (15-150 keV)    in 240 sec: 0.185711 ( -0.016319  0.016303 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.52577e-06 ( -2.94744e-07  2.93592e-07 ) ergs/cm2
 
Band function
Time interval is from  -42.228 sec. to  197.796 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.23287   ( -0.183185   0.576564 )
beta        : -9.37166    ( 9.37167   19.3717 )
Epeak [keV] : 240.088      ( -143.741 -239.665 )
Norm@50keV   : 1.85674E-03    ( -0.000140151   0.000615227 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.53 using 59 PHA bins.
# Reduced chi-squared =          1.119 for     55 degrees of freedom 
# Null hypothesis probability =   2.538893e-01
 
Photon flux (15-150 keV)    in 240 sec: 0.183675 (    ) 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]    : 18.6847  (-1.68094  1.90356)
R^2/D10^2   : 1.01391E-02  (-0.00290456   0.00394458)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          96.79 using 59 PHA bins.
# Reduced chi-squared =          1.698 for     57 degrees of freedom 
# Null hypothesis probability =   7.901452e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.680e-07   2.519e-08
25- 50  7.984e-07   9.288e-08
50-150  2.041e-06   2.387e-07
15-150  3.008e-06   2.724e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-27.0805      -200)
Norm        : 0.784439       (-0.0594757     0.0594757)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.31 using 59 PHA bins.
# Reduced chi-squared =          1.163 for     57 degrees of freedom 
# Null hypothesis probability =   1.866634e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.688e-07   3.972e-08
25- 50  9.018e-07   1.084e-07
50-150  1.978e-06   4.992e-07
15-150  3.348e-06   8.567e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.02099        (-1.04126      1.46932)
R1^2/D10^2  : 1.69913        (-1.29396      6.78374)
kT2 [keV]   : 22.6993        (-2.59578      3.44022)
R2^2/D10^2  : 4.80429E-03    (-0.00188869   0.00252689)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.76 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     55 degrees of freedom 
# Null hypothesis probability =   4.093764e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.887e-07   2.226e-07
25- 50  7.229e-07   1.469e-07
50-150  2.248e-06   3.514e-07
15-150  3.460e-06   4.848e-07

Peak spectrum fit

Power-law model
Time interval is from   49.076 sec. to   50.076 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98071     ( -0.592409   0.819984 )
Norm@50keV  : 6.38096E-03    ( -0.00278683   0.00226783 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.73 using 59 PHA bins.
# Reduced chi-squared =          1.118 for     57 degrees of freedom 
# Null hypothesis probability =   2.517766e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.948786 ( -0.276811  0.277137 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.87788e-08 ( -2.10892e-08  2.12418e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   49.076 sec. to   50.076 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.86501     ( -0.594468   0.826018 )
Epeak [keV] : 587.092      ( -9999.34 -9999.36 )
Norm@50keV  : 3.27460E-04    ( -0.00032783   0.00418917 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.63 using 59 PHA bins.
# Reduced chi-squared =          1.083 for     56 degrees of freedom 
# Null hypothesis probability =   3.126019e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.953580 ( -0.275747  0.27509 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.87188e-08 ( -2.09415e-08  2.09306e-08 ) ergs/cm2
 
Band function
Time interval is from   49.076 sec. to   50.076 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.98489   ( -0.604033   1.57937 )
beta        : -9.36956    ( 5.96673   9.36956 )
Epeak [keV] : 9999.36      ( -9.99384 -9999.36 )
Norm@50keV   : 6.36995E-03    ( -0.0018366   0.00183841 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.73 using 59 PHA bins.
# Reduced chi-squared =          1.159 for     55 degrees of freedom 
# Null hypothesis probability =   1.963404e-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]    : 3.38818  (-1.05649  2.11175)
R^2/D10^2   : 46.1303  (-46.1303   420.601)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.90 using 59 PHA bins.
# Reduced chi-squared =          1.296 for     57 degrees of freedom 
# Null hypothesis probability =   6.553544e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.767e-08   1.072e-08
25- 50  3.866e-09   2.450e-09
50-150  1.576e-11   1.993e-11
15-150  2.155e-08   1.307e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 121.863       (-78.8819      -118.019)
Norm        : 3.79427       (-1.27386     2.44228)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.81 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.229813e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.876e-09   5.980e-09
25- 50  1.772e-08   1.037e-08
50-150  3.186e-08   2.173e-08
15-150  5.945e-08   3.729e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.77292        (-0.98027      1.23026)
R1^2/D10^2  : 124.501        (-111.35      2890.62)
kT2 [keV]   : 21.0672        (-5.9581      10.7806)
R2^2/D10^2  : 2.57384E-02    (-0.0196642   0.0565377)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.70 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     55 degrees of freedom 
# Null hypothesis probability =   4.484169e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.619e-08   9.580e-09
25- 50  1.264e-08   7.410e-09
50-150  3.673e-08   2.408e-08
15-150  6.556e-08   3.525e-08
Plot creation:
Wed Dec  6 03:50:05 EST 2017