batgrbproduct Analysis for Trigger=158700

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 15:29:55 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger158700/GCN5_download_cron
======================================================================

  Trigger: 00158700      Segment: 000

  BAT Trigger Time: 150397242.528   [s; MET]
      Trigger Stop: 150397242.912   [s; MET]
               UTC: 2005-10-07T17:00:42.758000    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) Expanded to TRIGTIME - 32 ms to TRIGTIME + 320 ms

  BAT 
    RA: 115.891105785843   Dec: -0.512485921108127  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    33409
     Image Trigger?:     NO
     Rate S/N Ratio:     8.24621125123532  [ if not an image trigger ]
     Image S/N Ratio:    33409

  Flight Position:   [ source = BAT ]
    RA: 115.891105785843   Dec: -0.512485921108127  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 115.680281712132   Dec: -0.600583801051241  [deg; J2000]  
        { 07h 42m 43.3s , -00d 36' 02.1" }
         +/- 8.75548773826977 [arcmin] (estimated 90% radius based on SNR)
         +/- 7.61623267573735 [arcmin] (formal 1-sigma fit error)
    SNR: 1.37089313815661
    RA  =   7h 42m 43.3s  (115.680282 deg.)
    Dec =   0d 36'  2" (-0.600584 deg.)
 
  Angular difference between Flight and Ground position is 13.708894 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 0.38400000333786 +/- 
        Measured from: 0
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     T50: 0.38400000333786 +/- 
        Measured from: 0
                   to: 0.38400000333786     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.38400000333786 second)
        Measured from: 0     
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.001367  -0.003274   0.003849   0.003230
           0.002735   0.002898   0.002403   0.002220 [error]
 Peak      0.001367  -0.003274   0.003849   0.003230
           0.002735   0.002898   0.002403   0.002220 [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 2.45e-11 1.53e-10 8.73e-10 2.36e-08 2.92e-09 2.97e-08   erg/cm2
              Error 6.45e-10 6.66e-10 1.47e-09 6.34e-08 4.32e-09 0.00e+00   erg/cm2
Peak flux Power-law 1.89e-03 6.48e-03 1.85e-02 1.63e-01 5.10e-02 1.86e-01   ph/cm2/s
              Error 5.67e-02 3.06e-02 3.24e-02 3.95e-01 9.48e-02 4.10e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.32e-11 1.52e-10 8.72e-10 2.36e-08 2.93e-09 1.97e-08   erg/cm2
              Error 6.47e-10 6.66e-10 1.48e-09 6.96e-08 4.33e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.03e-03 7.20e-03 2.85e-02 5.87e-02 6.30e-02 8.78e-02   ph/cm2/s
              Error 7.48e-02 2.92e-02 4.27e-02 5.64e-01 8.68e-02 4.27e-01   ph/cm2/s
 
Fluence        Band 1.28e-10 2.64e-10 1.15e-09 5.54e-09 3.93e-09 4.89e-10   erg/cm2
              Error 8.37e-08 4.96e-09 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 1.85e-03 6.45e-03 2.35e-02 5.83e-02 6.48e-02 1.91e-01   ph/cm2/s
              Error 1.56e-02 2.54e-02 4.23e-02 4.59e-01 8.20e-02 4.41e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.562    6.500    -      -           2.91e-04 8.25e-04   43.156 57
CPL   4.376    0.000    9991.8    0.0      3.92e-05 0.00e+00   43.675 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.562    6.500    -      -           2.91e-04 8.25e-04   43.156 57
CPL   4.376    0.000    9991.8    0.0      3.92e-05 0.00e+00   43.675 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    0.384    0.000    0.384
T90     0.384    0.000    0.384
T50     0.384    0.000    0.384
Peak    0.384    0.000    0.384

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  115.6803  -0.6006 0.1411   11.2  -32.4       0.0068     1.4  TRIG_00158700       
------------------------------------------
 
Foreground time interval of the image:
 -0.032   0.352 (delta_t =   0.384 [sec])
Background time interval of the image:
-299.560 -181.448 (delta_t = 118.112 [sec])
-180.560  -2.560 (delta_t = 178.000 [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   -0.032 sec. to    0.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.561682     ( -2.43832   10.5617 )
Norm@50keV  : 2.905725E-04    ( -2.905726E-04   1.359565E-03) )
------------------------------------------------------------
 Chi-Squared =      43.15618     using    59 PHA bins.
 Reduced chi-squared =     0.7571260     for     57 degrees of freedom
 Null hypothesis probability = 0.912
 
Photon flux (15-150 keV)    in 0.3840 sec: 5.100033E-02 ( -0.0510003  0.138534 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.91661e-09 ( -2.91661e-09  5.72052e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.37603     (     )
Epeak [keV] : 9991.77      (   )
Norm@50keV  : 3.919583E-05    (     )
------------------------------------------------------------
 Chi-Squared =      43.67472     using    59 PHA bins.
 Reduced chi-squared =     0.7799057     for     56 degrees of freedom
 Null hypothesis probability = 0.885
 
Photon flux (15-150 keV)    in 0.3840 sec: 6.297893E-02 ( -0.0629789  0.110686 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.92782e-09 ( -2.92782e-09  5.73124e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.272104   ( -9.72790   5.27210 )
beta        : 0.550028    ( -10.5500   9.44997 )
Epeak [keV] : 24.5434      ( -24.4434 9975.46 )
Norm@50keV   : 4.000009E-04    ( -4.000009E-04   923.215 )
------------------------------------------------------------
 Chi-Squared =      43.15699     using    59 PHA bins.
 Reduced chi-squared =     0.7846726     for     55 degrees of freedom
 Null hypothesis probability = 0.876
 
Photon flux (15-150 keV)    in 0.3840 sec: 6.479739E-02 ( -0.0647974  0.0991296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.92571e-09 ( -3.92571e-09  5.99604e-09 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.561682     ( -2.43832   10.5617 )
Norm@50keV  : 2.905725E-04    ( -2.905726E-04   1.359565E-03) )
------------------------------------------------------------
 Chi-Squared =      43.15618     using    59 PHA bins.
 Reduced chi-squared =     0.7571260     for     57 degrees of freedom
 Null hypothesis probability = 0.912
 
Photon flux (15-150 keV)    in 0.3840 sec: 5.100033E-02 ( -0.0510003  0.138534 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.91661e-09 ( -2.91661e-09  5.72052e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.37603     (     )
Epeak [keV] : 9991.77      (   )
Norm@50keV  : 3.919583E-05    (     )
------------------------------------------------------------
 Chi-Squared =      43.67472     using    59 PHA bins.
 Reduced chi-squared =     0.7799057     for     56 degrees of freedom
 Null hypothesis probability = 0.885
 
Photon flux (15-150 keV)    in 0.3840 sec: 6.297893E-02 ( -0.0629789  0.110686 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.92782e-09 ( -2.92782e-09  5.73124e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.272104   ( -9.72790   5.27210 )
beta        : 0.550028    ( -10.5500   9.44997 )
Epeak [keV] : 24.5434      ( -24.4434 9975.46 )
Norm@50keV   : 4.000009E-04    ( -4.000009E-04   923.215 )
------------------------------------------------------------
 Chi-Squared =      43.15699     using    59 PHA bins.
 Reduced chi-squared =     0.7846726     for     55 degrees of freedom
 Null hypothesis probability = 0.876
 
Photon flux (15-150 keV)    in 0.3840 sec: 6.479739E-02 ( -0.0647974  0.0991296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.92571e-09 ( -3.92571e-09  5.99604e-09 ) ergs/cm2
 
Plot creation:
Wed Jan  9 15:42:10 EST 2008