batgrbproduct Analysis for Trigger=288596

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Dec 14 10:59:13 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger288596/GCN5_download_cron
======================================================================

  Trigger: 00288596      Segment: 000

  BAT Trigger Time: 210629472   [s; MET]
      Trigger Stop: 210629536   [s; MET]
               UTC: 2007-09-04T20:11:09.798220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 83.6048763182781   Dec: 22.0063055620679  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15

  Flight Position:   [ source = BAT ]
    RA: 83.6048763182781   Dec: 22.0063055620679  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 83.6198197085179   Dec: 22.004774241788  [deg; J2000]  
        { 05h 34m 28.8s , +22d 00' 17.2" }
         +/- 2.06172625700343 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.983375939242336 [arcmin] (formal 1-sigma fit error)
    SNR: 10.8197430886051
    RA  =   5h 34m 28.8s  (83.619820 deg.)
    Dec =  22d  0' 17" (22.004774 deg.)
 
  Angular difference between Flight and Ground position is 0.836346 arcmin
 
  Partial Coding Fraction: 0.375    [ 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     0.432665   0.390304   0.222791   0.027258
           0.050656   0.050946   0.045637   0.041632 [error]
 Peak      0.432665   0.390304   0.222791   0.027258
           0.050656   0.050946   0.045637   0.041632 [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 1.67e-07 2.06e-07 1.83e-07 2.83e-07 6.54e-07 8.41e-07   erg/cm2
              Error 3.36e-08 2.77e-08 4.76e-08 1.49e-07 1.05e-07 1.99e-07   erg/cm2
Peak flux Power-law 1.66e-01 1.13e-01 5.03e-02 3.11e-02 3.44e-01 3.60e-01   ph/cm2/s
              Error 3.41e-02 1.50e-02 1.26e-02 1.52e-02 4.64e-02 4.78e-02   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 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
 
Fluence        Band 1.63e-07 2.29e-07 8.57e-07 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 2.34e-07 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 1.58e-01 1.13e-01 5.14e-02 3.27e-02 3.43e-01 3.55e-01   ph/cm2/s
              Error 3.36e-02 1.51e-02 7.44e-03 9.81e-03 4.56e-02 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.165    0.295    -      -           2.12e-03 3.88e-04   57.715 57
CPL   1.995    0.000       2.9    0.0      2.40e-03 0.00e+00   58.483 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.165    0.295    -      -           2.12e-03 3.88e-04   57.715 57
CPL   1.995    0.000       2.9    0.0      2.40e-03 0.00e+00   58.483 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
   83.6198 +22.0048 0.0180   46.7  -15.1       1.1126    10.8  TRIG_00288596       
------------------------------------------
 
Foreground time interval of the image:
  0.000  33.064 (delta_t =  33.064 [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   33.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.16513     ( -0.281082   0.308067 )
Norm@50keV  : 2.115136E-03    ( -3.986708E-04   3.768785E-04) )
------------------------------------------------------------
 Chi-Squared =      57.71464     using    59 PHA bins.
 Reduced chi-squared =      1.012537     for     57 degrees of freedom
 Null hypothesis probability = 0.449
 
Photon flux (15-150 keV)    in 33.06 sec: 0.343869 ( -0.046373  0.04645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.54406e-07 ( -1.03511e-07  1.0567e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99547     (     )
Epeak [keV] : 2.85053      (   )
Norm@50keV  : 2.404120E-03    (     )
------------------------------------------------------------
 Chi-Squared =      58.48313     using    59 PHA bins.
 Reduced chi-squared =      1.044342     for     56 degrees of freedom
 Null hypothesis probability = 0.384
 
Photon flux (15-150 keV)    in 33.06 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.58476   ( -7.77524   7.22476 )
beta        : -2.09269    ( -0.308691   0.280899 )
Epeak [keV] : 7.42149      ( -7.32149 9992.58 )
Norm@50keV   : 8.627645E-03    ( -5.421084E-02   5.121177E-02) )
------------------------------------------------------------
 Chi-Squared =      57.88630     using    59 PHA bins.
 Reduced chi-squared =      1.052478     for     55 degrees of freedom
 Null hypothesis probability = 0.369
 
Photon flux (15-150 keV)    in 33.06 sec: 0.343021 ( -0.045696  0.045573 ) 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   33.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.16513     ( -0.281082   0.308067 )
Norm@50keV  : 2.115136E-03    ( -3.986708E-04   3.768785E-04) )
------------------------------------------------------------
 Chi-Squared =      57.71464     using    59 PHA bins.
 Reduced chi-squared =      1.012537     for     57 degrees of freedom
 Null hypothesis probability = 0.449
 
Photon flux (15-150 keV)    in 33.06 sec: 0.343869 ( -0.046373  0.04645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.54406e-07 ( -1.03511e-07  1.0567e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99547     (     )
Epeak [keV] : 2.85053      (   )
Norm@50keV  : 2.404120E-03    (     )
------------------------------------------------------------
 Chi-Squared =      58.48313     using    59 PHA bins.
 Reduced chi-squared =      1.044342     for     56 degrees of freedom
 Null hypothesis probability = 0.384
 
Photon flux (15-150 keV)    in 33.06 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.58476   ( -7.77524   7.22476 )
beta        : -2.09269    ( -0.308691   0.280899 )
Epeak [keV] : 7.42149      ( -7.32149 9992.58 )
Norm@50keV   : 8.627645E-03    ( -5.421084E-02   5.121177E-02) )
------------------------------------------------------------
 Chi-Squared =      57.88630     using    59 PHA bins.
 Reduced chi-squared =      1.052478     for     55 degrees of freedom
 Null hypothesis probability = 0.369
 
Photon flux (15-150 keV)    in 33.06 sec: 0.343021 ( -0.045696  0.045573 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Fri Dec 14 11:04:56 EST 2007