batgrbproduct Analysis for Trigger=362752

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Tue Sep 15 11:16:16 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger362752/GCN5_download_cron
======================================================================

  Trigger: 00362752      Segment: 000

  BAT Trigger Time: 274663086.016   [s; MET]
      Trigger Stop: 274663094.208   [s; MET]
               UTC: 2009-09-14T23:18:00.930140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 252.728183631329   Dec: -3.63694334599726  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.79
     Image Trigger?:     NO
     Rate S/N Ratio:     34.4093010681705  [ if not an image trigger ]
     Image S/N Ratio:    5.79

  Flight Position:   [ source = BAT ]
    RA: 252.728183631329   Dec: -3.63694334599726  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 252.77816659096   Dec: -3.71257813619341  [deg; J2000]  
        { 16h 51m 06.8s , -03d 42' 45.3" }
         +/- 6.51107773745525 [arcmin] (estimated 90% radius based on SNR)
         +/- 4.11426632628365 [arcmin] (formal 1-sigma fit error)
    SNR: 2.09294165700423
 
  Angular difference between Flight and Ground position is 5.436098 arcmin
 
  Partial Coding Fraction: 0.7578125    [ including projection effects ]

  Duration
     T90: 8.19200003147125 +/- 
        Measured from: 0
                   to: 8.19200003147125     [s; relative to TRIGTIME]
     T50: 8.19200003147125 +/- 
        Measured from: 0
                   to: 8.19200003147125     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 8.19200003147125 second)
        Measured from: 0     
                   to: 8.19200003147125     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 8.19200003147125     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.081897   0.020541  -0.006128  -0.033562
           0.020265   0.019820   0.017685   0.016570 [error]
 Peak      0.081897   0.020541  -0.006128  -0.033562
           0.020265   0.019820   0.017685   0.016570 [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 1.97e-08 1.19e-08 4.65e-09 2.43e-09 3.76e-08 3.75e-08   erg/cm2
              Error 9.53e-09 9.04e-09 7.45e-09 9.36e-09 2.36e-08 2.78e-08   erg/cm2
Peak flux Power-law 8.08e-02 2.77e-02 5.41e-03 1.24e-03 1.15e-01 1.14e-01   ph/cm2/s
              Error 3.94e-02 2.01e-02 8.32e-03 4.25e-03 5.72e-02 5.78e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.35e-08 1.01e-08 1.41e-10 3.80e-15 3.37e-08 3.35e-08   erg/cm2
              Error 1.06e-08 8.24e-09 4.49e-09 2.47e-10 1.64e-08 1.64e-08   erg/cm2
Peak flux Cutoff-PL 9.38e-02 2.59e-02 2.12e-04 3.33e-09 1.20e-01 1.20e-01   ph/cm2/s
              Error 4.34e-02 1.75e-02 5.17e-03 6.20e-04 5.34e-02 5.34e-02   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 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    3.325    1.379    -      -           3.27e-04 3.83e-04   65.460 57
CPL  -4.987    0.000      19.0    5.2      1.44e+03 1.05e+03   62.870 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.325    1.379    -      -           3.27e-04 3.83e-04   65.460 57
CPL  -4.987    0.000      19.0    5.2      1.44e+03 1.05e+03   62.870 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    8.192    0.000    8.192
T90     8.192    0.000    8.192
T50     8.192    0.000    8.192
Peak    8.192    0.000    8.192

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  252.7782  -3.7126 0.0922   33.2 -167.7       0.0966     2.1  TRIG_00362752       
------------------------------------------
 
Foreground time interval of the image:
  0.000   8.192 (delta_t =   8.192 [sec])
Background time interval of the image:
-60.016 -41.679 (delta_t =  18.337 [sec])
-41.016 -30.016 (delta_t =  11.000 [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    0.000 sec. to    8.192 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.32534     ( -1.02138   1.7374 )
Norm@50keV  : 3.27289E-04    ( -0.000325089   0.000441587 )
------------------------------------------------------------
# Chi-Squared =          65.46 using 59 PHA bins.
# Reduced chi-squared =          1.148 for     57 degrees of freedom 
# Null hypothesis probability =   2.067845e-01
 
Photon flux (15-150 keV)    in 8.192 sec: 0.114647 ( -0.0564626  0.0578973 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.76052e-08 ( -2.04348e-08  2.67334e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98659     (     )
Epeak [keV] : 19.0371      ( -4.62362 5.85467 )
Norm@50keV  : 1439.44    ( -1439.52   659.958 )
------------------------------------------------------------
# Chi-Squared =          62.87 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     56 degrees of freedom 
# Null hypothesis probability =   2.461724e-01
 
Photon flux (15-150 keV)    in 8.192 sec: 0.119929 ( -0.0532943  0.0535 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.37044e-08 ( -1.57214e-08  1.71515e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    8.192 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.84579   ( 0.610209   5.60365 )
beta        : -6.01415    ( 6.3273   16.3269 )
Epeak [keV] : 17.3269      ( -11.7323 14.9378 )
Norm@50keV   : 33.2862    ( -33.2933   2368.84 )
------------------------------------------------------------
# Chi-Squared =          63.28 using 59 PHA bins.
# Reduced chi-squared =          1.150 for     55 degrees of freedom 
# Null hypothesis probability =   2.073783e-01
 
Photon flux (15-150 keV)    in 8.192 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    8.192 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.32534     ( -1.02138   1.7374 )
Norm@50keV  : 3.27289E-04    ( -0.000325089   0.000441587 )
------------------------------------------------------------
# Chi-Squared =          65.46 using 59 PHA bins.
# Reduced chi-squared =          1.148 for     57 degrees of freedom 
# Null hypothesis probability =   2.067845e-01
 
Photon flux (15-150 keV)    in 8.192 sec: 0.114647 ( -0.0564626  0.0578973 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.76052e-08 ( -2.04348e-08  2.67334e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98659     (     )
Epeak [keV] : 19.0371      ( -4.62362 5.85467 )
Norm@50keV  : 1439.44    ( -1439.52   659.958 )
------------------------------------------------------------
# Chi-Squared =          62.87 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     56 degrees of freedom 
# Null hypothesis probability =   2.461724e-01
 
Photon flux (15-150 keV)    in 8.192 sec: 0.119929 ( -0.0532943  0.0535 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.37044e-08 ( -1.57214e-08  1.71515e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    8.192 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.84579   ( 0.610209   5.60365 )
beta        : -6.01415    ( 6.3273   16.3269 )
Epeak [keV] : 17.3269      ( -11.7323 14.9378 )
Norm@50keV   : 33.2862    ( -33.2933   2368.84 )
------------------------------------------------------------
# Chi-Squared =          63.28 using 59 PHA bins.
# Reduced chi-squared =          1.150 for     55 degrees of freedom 
# Null hypothesis probability =   2.073783e-01
 
Photon flux (15-150 keV)    in 8.192 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Tue Sep 15 11:32:46 EDT 2009