batgrbproduct Analysis for Trigger=152762

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  8 19:01:25 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger152762/GCN5_download_cron
======================================================================

  Trigger: 00152762      Segment: 000

  BAT Trigger Time: 147114792   [s; MET]
      Trigger Stop: 147114856   [s; MET]
               UTC: 2005-08-30T17:13:12.297620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 13.7087559596663   Dec: -0.0987132569530423  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    33284
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    33284

  Flight Position:   [ source = BAT ]
    RA: 13.7087559596663   Dec: -0.0987132569530423  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 13.6488206659982   Dec: -0.0290033337839847  [deg; J2000]  
        { 00h 54m 35.7s , -00d 01' 44.4" }
         +/- 5.08217974383218 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.12616990979556 [arcmin] (formal 1-sigma fit error)
    SNR: 2.98177928308557
    RA  =   0h 54m 35.7s  (13.648821 deg.)
    Dec =   0d  1' 44" (-0.029003 deg.)
 
  Angular difference between Flight and Ground position is 5.515990 arcmin
 
  Partial Coding Fraction: 0.75    [ 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     0.063975   0.066016  -0.011501   0.003792
           0.028148   0.028975   0.025589   0.022567 [error]
 Peak      0.063975   0.066016  -0.011501   0.003792
           0.028148   0.028975   0.025589   0.022567 [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 2.35e-08 1.80e-08 9.26e-09 6.83e-09 5.39e-08 5.85e-08   erg/cm2
              Error 1.30e-08 1.54e-08 1.57e-08 3.37e-08 4.34e-08 6.33e-08   erg/cm2
Peak flux Power-law 2.36e-02 1.02e-02 2.61e-03 8.25e-04 3.69e-02 3.72e-02   ph/cm2/s
              Error 1.33e-02 9.06e-03 4.26e-03 3.52e-03 2.08e-02 2.14e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.36e-08 1.97e-08 6.50e-09 7.64e-10 5.05e-08 5.05e-08   erg/cm2
              Error 1.33e-08 1.97e-08 1.56e-08 3.27e-08 4.27e-08 6.21e-08   erg/cm2
Peak flux Cutoff-PL 2.35e-02 1.12e-02 1.93e-03 1.20e-04 3.68e-02 3.68e-02   ph/cm2/s
              Error 1.87e-02 1.08e-02 4.22e-03 3.43e-03 2.04e-02 2.10e-02   ph/cm2/s
 
Fluence        Band 2.15e-08 1.80e-08 9.29e-09 6.91e-09 5.39e-08 7.18e-08   erg/cm2
              Error 1.37e-08 9.48e-09 1.84e-08 2.75e-08 3.60e-08 0.00e+00   erg/cm2
Peak flux      Band 2.31e-02 1.08e-02 3.03e-03 1.06e-03 3.74e-02 3.79e-02   ph/cm2/s
              Error 1.32e-02 5.26e-03 7.07e-03 3.04e-03 2.86e-02 2.89e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.962    2.191    -      -           1.38e-04 1.69e-04   77.099 57
CPL   1.419    4.450      11.6 5000.0      1.60e-03 0.00e+00   77.047 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.962    2.191    -      -           1.38e-04 1.69e-04   77.099 57
CPL   1.419    4.328      11.6 5000.0      1.60e-03 0.00e+00   77.047 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
   13.6488  -0.0290 0.0638   22.6   40.8       0.1755     3.0  TRIG_00152762       
------------------------------------------
 
Foreground time interval of the image:
  0.000  33.092 (delta_t =  33.092 [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   33.092 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.96161     ( -1.23667   3.14487 )
Norm@50keV  : 1.379510E-04    ( -1.379510E-04   2.006584E-04) )
------------------------------------------------------------
 Chi-Squared =      77.09893     using    59 PHA bins.
 Reduced chi-squared =      1.352613     for     57 degrees of freedom
 Null hypothesis probability = 3.931E-02
 
Photon flux (15-150 keV)    in 33.09 sec: 3.689361E-02 ( -0.0206685  0.020855 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.39023e-08 ( -3.68662e-08  5.00076e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.092 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41851     ( -4.41851   4.48144 )
Epeak [keV] : 11.6152      ( -11.6052 9988.38 )
Norm@50keV  : 1.600326E-03    (     )
------------------------------------------------------------
 Chi-Squared =      77.04681     using    59 PHA bins.
 Reduced chi-squared =      1.375836     for     56 degrees of freedom
 Null hypothesis probability = 3.257E-02
 
Photon flux (15-150 keV)    in 33.09 sec: 3.675009E-02 ( -0.0203011  0.0205103 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.0502e-08 ( -3.27986e-08  5.26654e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.092 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.54711   ( -8.45289   6.54711 )
beta        : -4.00020    ( -4.168129E-02   8.22162 )
Epeak [keV] : 10.2173      ( -10.1173 9989.78 )
Norm@50keV   : 1.259331E-03    ( -1.261017E-03   39.2998 )
------------------------------------------------------------
 Chi-Squared =      77.05481     using    59 PHA bins.
 Reduced chi-squared =      1.400997     for     55 degrees of freedom
 Null hypothesis probability = 2.649E-02
 
Photon flux (15-150 keV)    in 33.09 sec: 3.743992E-02 ( -0.0374399  0.0196724 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.38715e-08 ( -2.68144e-08  2.82814e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   33.092 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.96161     ( -1.23667   3.14487 )
Norm@50keV  : 1.379510E-04    ( -1.379510E-04   2.006584E-04) )
------------------------------------------------------------
 Chi-Squared =      77.09893     using    59 PHA bins.
 Reduced chi-squared =      1.352613     for     57 degrees of freedom
 Null hypothesis probability = 3.931E-02
 
Photon flux (15-150 keV)    in 33.09 sec: 3.689361E-02 ( -0.0206685  0.020855 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.39023e-08 ( -3.68662e-08  5.00076e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.092 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41851     ( -4.41851   4.23666 )
Epeak [keV] : 11.6152      ( -11.6052 9988.38 )
Norm@50keV  : 1.600326E-03    (     )
------------------------------------------------------------
 Chi-Squared =      77.04681     using    59 PHA bins.
 Reduced chi-squared =      1.375836     for     56 degrees of freedom
 Null hypothesis probability = 3.257E-02
 
Photon flux (15-150 keV)    in 33.09 sec: 3.675009E-02 ( -0.0203011  0.0205103 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.0502e-08 ( -3.27986e-08  5.26654e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.092 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.54711   ( -8.45289   6.54711 )
beta        : -4.00020    ( -4.168129E-02   19.8069 )
Epeak [keV] : 10.2173      ( -10.1173 9989.78 )
Norm@50keV   : 1.259331E-03    ( -1.261017E-03   39.2998 )
------------------------------------------------------------
 Chi-Squared =      77.05481     using    59 PHA bins.
 Reduced chi-squared =      1.400997     for     55 degrees of freedom
 Null hypothesis probability = 2.649E-02
 
Photon flux (15-150 keV)    in 33.09 sec: 3.743992E-02 ( -0.0374399  0.0196724 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.38715e-08 ( -2.68144e-08  2.82814e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  8 19:06:34 EST 2008