batgrbproduct Analysis for Trigger=317393

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Sun Jul 20 12:31:12 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger317393/GCN5_download_cron
======================================================================

  Trigger: 00317393      Segment: 000

  BAT Trigger Time: 238206224   [s; MET]
      Trigger Stop: 238206288   [s; MET]
               UTC: 2008-07-20T00:23:41.046060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 162.521270856645   Dec: -10.4954986010427  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.29
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.29

  Flight Position:   [ source = BAT ]
    RA: 162.521270856645   Dec: -10.4954986010427  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 162.480725114924   Dec: -10.4613242630678  [deg; J2000]  
        { 10h 49m 55.4s , -10d 27' 40.8" }
         +/- 4.59839780762902 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.25673368512284 [arcmin] (formal 1-sigma fit error)
    SNR: 3.43983498680394
 
  Angular difference between Flight and Ground position is 3.150696 arcmin
 
  Partial Coding Fraction: 0.4296875    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.307138   0.274598  -0.059842  -0.064364
           0.066157   0.066828   0.061328   0.057485 [error]
 Peak      0.307138   0.274598  -0.059842  -0.064364
           0.066157   0.066828   0.061328   0.057485 [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 9.61e-08 9.09e-08 5.98e-08 6.10e-08 2.72e-07 3.06e-07   erg/cm2
              Error 3.41e-08 3.46e-08 4.12e-08 8.75e-08 1.09e-07 1.54e-07   erg/cm2
Peak flux Power-law 4.96e-02 2.62e-02 8.61e-03 3.66e-03 8.64e-02 8.82e-02   ph/cm2/s
              Error 1.79e-02 9.67e-03 5.75e-03 4.91e-03 2.79e-02 2.86e-02   ph/cm2/s
 
Fluence   Cutoff-PL 9.68e-08 1.29e-07 1.55e-08 3.31e-11 2.42e-07 2.42e-07   erg/cm2
              Error 3.24e-08 4.54e-08 2.58e-08 1.50e-09 7.40e-08 7.40e-08   erg/cm2
Peak flux Cutoff-PL 4.83e-02 3.80e-02 2.57e-03 2.86e-06 8.88e-02 8.88e-02   ph/cm2/s
              Error 1.49e-02 1.23e-02 4.05e-03 1.27e-04 2.53e-02 2.53e-02   ph/cm2/s
 
Fluence        Band 7.75e-08 1.29e-07 1.23e-08 8.81e-11 2.39e-07 2.54e-07   erg/cm2
              Error 5.08e-08 1.07e-08 1.39e-09 6.80e-08 1.25e-07 0.00e+00   erg/cm2
Peak flux      Band 5.34e-02 2.78e-02 7.68e-03 1.29e-03 8.90e-02 8.52e-02   ph/cm2/s
              Error 1.79e-02 7.99e-03 1.71e-03 2.54e-02 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.587    0.634    -      -           4.17e-04 3.19e-04   50.103 57
CPL  -2.500    0.000      27.0    5.9      1.34e+00 3.91e+00   42.878 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.587    0.634    -      -           4.17e-04 3.19e-04   50.103 57
CPL  -2.500    0.000      27.0    5.9      1.34e+00 3.91e+00   42.878 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  162.4807 -10.4613 0.0558   43.0 -155.8       0.4636     3.4  TRIG_00317393       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.58721     ( -0.544373   0.722739 )
Norm@50keV  : 4.170276E-04    ( -4.170276E-04   2.210652E-04) )
------------------------------------------------------------
 Chi-Squared =      50.10287     using    59 PHA bins.
 Reduced chi-squared =     0.8789978     for     57 degrees of freedom
 Null hypothesis probability = 0.729
 
Photon flux (15-150 keV)    in 64.00 sec: 8.640133E-02 ( -0.0278068  0.0280517 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.71752e-07 ( -1.02376e-07  1.14932e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.49993     (     )
Epeak [keV] : 27.0409      ( -5.38446 6.32502 )
Norm@50keV  : 1.34434    ( -1.90279   5.92273 )
------------------------------------------------------------
 Chi-Squared =      42.87828     using    59 PHA bins.
 Reduced chi-squared =     0.7656837     for     56 degrees of freedom
 Null hypothesis probability = 0.901
 
Photon flux (15-150 keV)    in 64.00 sec: 8.877822E-02 ( -0.0253249  0.0253258 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.41634e-07 ( -7.23725e-08  7.56538e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.37486   ( -1.06871   6.32733 )
beta        : -8.26212    ( -1.73788   5.82514 )
Epeak [keV] : 16.3396      ( -16.2396 22.3865 )
Norm@50keV   : 2.917358E-03    ( -14.1049   78.1878 )
------------------------------------------------------------
 Chi-Squared =      46.94624     using    59 PHA bins.
 Reduced chi-squared =     0.8535681     for     55 degrees of freedom
 Null hypothesis probability = 0.772
 
Photon flux (15-150 keV)    in 64.00 sec: 8.901737E-02 ( -0.0254795  0.0253836 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.38764e-07 ( -6.80653e-08  6.78355e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.58721     ( -0.544373   0.722739 )
Norm@50keV  : 4.170276E-04    ( -4.170276E-04   2.210652E-04) )
------------------------------------------------------------
 Chi-Squared =      50.10287     using    59 PHA bins.
 Reduced chi-squared =     0.8789978     for     57 degrees of freedom
 Null hypothesis probability = 0.729
 
Photon flux (15-150 keV)    in 64.00 sec: 8.640133E-02 ( -0.0278068  0.0280517 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.71752e-07 ( -1.02376e-07  1.14932e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.49993     (     )
Epeak [keV] : 27.0409      ( -5.38446 6.32502 )
Norm@50keV  : 1.34434    ( -1.90279   5.92273 )
------------------------------------------------------------
 Chi-Squared =      42.87828     using    59 PHA bins.
 Reduced chi-squared =     0.7656837     for     56 degrees of freedom
 Null hypothesis probability = 0.901
 
Photon flux (15-150 keV)    in 64.00 sec: 8.877822E-02 ( -0.0253249  0.0253258 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.41634e-07 ( -7.23725e-08  7.56538e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.37486   ( -0.736533   6.32733 )
beta        : -8.26212    ( -1.73788   5.82551 )
Epeak [keV] : 16.3396      ( -9.68256 22.3865 )
Norm@50keV   : 2.917358E-03    ( -14.1049   78.1878 )
------------------------------------------------------------
 Chi-Squared =      46.94624     using    59 PHA bins.
 Reduced chi-squared =     0.8535681     for     55 degrees of freedom
 Null hypothesis probability = 0.772
 
Photon flux (15-150 keV)    in 64.00 sec: 8.901737E-02 ( -0.0254795  0.0253836 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.38764e-07 ( -6.80653e-08  6.78355e-08 ) ergs/cm2
 
Plot creation:
Sun Jul 20 13:20:46 EDT 2008