batgrbproduct Analysis for Trigger=326220

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Sep 29 22:02:20 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger326220/GCN5_download_cron
======================================================================

  Trigger: 00326220      Segment: 000

  BAT Trigger Time: 244372240   [s; MET]
      Trigger Stop: 244372560   [s; MET]
               UTC: 2008-09-29T09:10:36.864760    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 266.593507764895   Dec: -32.2698029076949  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.36
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.36

  Flight Position:   [ source = BAT ]
    RA: 266.593507764895   Dec: -32.2698029076949  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 266.578229958763   Dec: -32.2563338396066  [deg; J2000]  
        { 17h 46m 18.8s , -32d 15' 22.8" }
         +/- 2.65609216300735 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.08767081534286 [arcmin] (formal 1-sigma fit error)
    SNR: 7.53454013831566
 
  Angular difference between Flight and Ground position is 1.119794 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]
     T50: 320 +/- 
        Measured from: 0
                   to: 320     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 320 second)
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 320     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.736254   0.701068   0.504910   0.002995
           0.105340   0.096016   0.087318   0.089594 [error]
 Peak      0.736254   0.701068   0.504910   0.002995
           0.105340   0.096016   0.087318   0.089594 [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 1.98e-07 3.05e-07 3.54e-07 7.91e-07 1.09e-06 1.64e-06   erg/cm2
              Error 4.29e-08 4.30e-08 8.43e-08 3.92e-07 1.92e-07 4.72e-07   erg/cm2
Peak flux Power-law 2.00e-02 1.70e-02 9.89e-03 8.56e-03 5.07e-02 5.55e-02   ph/cm2/s
              Error 4.44e-03 2.41e-03 2.27e-03 3.93e-03 7.16e-03 8.04e-03   ph/cm2/s
 
Fluence   Cutoff-PL 1.98e-07 3.06e-07 3.55e-07 7.85e-07 1.09e-06 1.65e-06   erg/cm2
              Error 4.30e-08 4.30e-08 8.44e-08 3.89e-07 1.92e-07 4.69e-07   erg/cm2
Peak flux Cutoff-PL 2.00e-02 1.70e-02 9.89e-03 8.50e-03 5.07e-02 5.55e-02   ph/cm2/s
              Error 4.44e-03 2.41e-03 2.27e-03 3.90e-03 7.16e-03 8.03e-03   ph/cm2/s
 
Fluence        Band 1.97e-07 3.12e-07 3.43e-07 7.10e-07 1.07e-06 1.66e-06   erg/cm2
              Error 4.46e-08 4.75e-08 7.65e-08 2.53e-07 1.96e-07 4.67e-07   erg/cm2
Peak flux      Band 1.99e-02 1.75e-02 9.62e-03 7.75e-03 5.05e-02 5.48e-02   ph/cm2/s
              Error 4.73e-03 2.66e-03 1.94e-03 3.92e-03 7.24e-03 7.96e-03   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.785    0.279    -      -           3.70e-04 6.29e-05   57.831 57
CPL   1.420    0.000      69.7    0.0      5.89e-04 5.46e-04   58.356 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.785    0.279    -      -           3.70e-04 6.29e-05   57.831 57
CPL   1.420    0.000      69.7    0.0      5.89e-04 5.46e-04   58.356 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  320.000    0.000  320.000
T90   320.000    0.000  320.000
T50   320.000    0.000  320.000
Peak  320.000    0.000  320.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  266.5782 -32.2563 0.0255    2.5  145.6       2.0779     7.5  TRIG_00326220       
------------------------------------------
 
Foreground time interval of the image:
  0.000 320.000 (delta_t = 320.000 [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  320.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78502     ( -0.272793   0.286007 )
Norm@50keV  : 3.700104E-04    ( -6.395689E-05   6.188362E-05) )
------------------------------------------------------------
 Chi-Squared =      57.83146     using    59 PHA bins.
 Reduced chi-squared =      1.014587     for     57 degrees of freedom
 Null hypothesis probability = 0.444
 
Photon flux (15-150 keV)    in 320.0 sec: 5.069357E-02 ( -0.00715749  0.00716039 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09066e-06 ( -1.88726e-07  1.956e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41991     (     )
Epeak [keV] : 69.7408      (   )
Norm@50keV  : 5.887990E-04    ( -8.691990E-05   1.006019E-03) )
------------------------------------------------------------
 Chi-Squared =      58.35608     using    59 PHA bins.
 Reduced chi-squared =      1.042073     for     56 degrees of freedom
 Null hypothesis probability = 0.389
 
Photon flux (15-150 keV)    in 320.0 sec: 5.067395E-02 ( -0.00715477  0.00715774 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09052e-06 ( -1.88752e-07  1.95597e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.28644   ( -8.71356   4.90233 )
beta        : -1.80081    ( -8.19919   0.283503 )
Epeak [keV] : 33.6701      ( -33.5701 9966.33 )
Norm@50keV   : 8.989327E-04    ( -1.18008   130.294 )
------------------------------------------------------------
 Chi-Squared =      57.73101     using    59 PHA bins.
 Reduced chi-squared =      1.049655     for     55 degrees of freedom
 Null hypothesis probability = 0.375
 
Photon flux (15-150 keV)    in 320.0 sec: 5.053098E-02 ( -0.00718719  0.00728583 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.07135e-06 ( -1.90534e-07  2.01677e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78502     ( -0.272793   0.286007 )
Norm@50keV  : 3.700104E-04    ( -6.395689E-05   6.188362E-05) )
------------------------------------------------------------
 Chi-Squared =      57.83146     using    59 PHA bins.
 Reduced chi-squared =      1.014587     for     57 degrees of freedom
 Null hypothesis probability = 0.444
 
Photon flux (15-150 keV)    in 320.0 sec: 5.069357E-02 ( -0.00715749  0.00716039 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09066e-06 ( -1.88726e-07  1.956e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41991     (     )
Epeak [keV] : 69.7408      (   )
Norm@50keV  : 5.887990E-04    ( -8.691990E-05   1.006019E-03) )
------------------------------------------------------------
 Chi-Squared =      58.35608     using    59 PHA bins.
 Reduced chi-squared =      1.042073     for     56 degrees of freedom
 Null hypothesis probability = 0.389
 
Photon flux (15-150 keV)    in 320.0 sec: 5.067395E-02 ( -0.00715477  0.00715774 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09052e-06 ( -1.88752e-07  1.95597e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  320.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.28644   ( -8.71356   4.90233 )
beta        : -1.80081    ( -8.19919   0.283503 )
Epeak [keV] : 33.6701      ( -33.5701 9966.33 )
Norm@50keV   : 8.989327E-04    ( -1.18008   130.294 )
------------------------------------------------------------
 Chi-Squared =      57.73101     using    59 PHA bins.
 Reduced chi-squared =      1.049655     for     55 degrees of freedom
 Null hypothesis probability = 0.375
 
Photon flux (15-150 keV)    in 320.0 sec: 5.053098E-02 ( -0.00718719  0.00728583 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.07135e-06 ( -1.90534e-07  2.01677e-07 ) ergs/cm2
 
Plot creation:
Mon Sep 29 22:34:54 EDT 2008