batgrbproduct Analysis for Trigger=292421

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Dec 14 15:42:01 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger292421/GCN5_download_cron
======================================================================

  Trigger: 00292421      Segment: 000

  BAT Trigger Time: 212598586.496   [s; MET]
      Trigger Stop: 212598588.544   [s; MET]
               UTC: 2007-09-27T15:09:44.243160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 272.596794303661   Dec: -26.1768473691333  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.8
     Image Trigger?:     NO
     Rate S/N Ratio:     9.64365076099295  [ if not an image trigger ]
     Image S/N Ratio:    6.8

  Flight Position:   [ source = BAT ]
    RA: 272.596794303661   Dec: -26.1768473691333  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 272.638868619338   Dec: -26.1330520166371  [deg; J2000]  
        { 18h 10m 33.3s , -26d 07' 59.0" }
         +/- 3.29378256089267 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.84319367699594 [arcmin] (formal 1-sigma fit error)
    SNR: 5.54056686266097
    RA  =  18h 10m 33.3s  (272.638869 deg.)
    Dec = -26d  7' 59" (-26.133052 deg.)
 
  Angular difference between Flight and Ground position is 3.469802 arcmin
 
  Partial Coding Fraction: 0.984375    [ including projection effects ]

  Duration
     T90: 2.04800000786781 +/- 
        Measured from: 0
                   to: 2.04800000786781     [s; relative to TRIGTIME]
     T50: 2.04800000786781 +/- 
        Measured from: 0
                   to: 2.04800000786781     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 2.04800000786781 second)
        Measured from: -1.49011611938477e-08     
                   to: 2.04799999296665     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 2.04800000786781     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.064983   0.005060  -0.005661  -0.005898
           0.008720   0.007252   0.006190   0.005736 [error]
 Peak      0.064983   0.005060  -0.005661  -0.005898
           0.008720   0.007252   0.006190   0.005736 [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 1.61e-08 3.40e-09 3.61e-10 4.21e-11 1.99e-08 1.99e-08   erg/cm2
              Error 4.28e-09 2.69e-09 7.10e-10 2.00e-10 6.74e-09 6.77e-09   erg/cm2
Peak flux Power-law 2.74e-01 3.36e-02 1.78e-03 9.93e-05 3.09e-01 3.09e-01   ph/cm2/s
              Error 7.12e-02 2.52e-02 3.50e-03 4.39e-04 8.87e-02 8.87e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.61e-08 3.41e-09 3.60e-10 4.18e-11 1.99e-08 1.99e-08   erg/cm2
              Error 4.28e-09 2.69e-09 7.09e-10 1.99e-10 6.74e-09 6.78e-09   erg/cm2
Peak flux Cutoff-PL 3.03e-01 1.60e-02 2.81e-06 1.85e-14 3.19e-01 3.19e-01   ph/cm2/s
              Error 7.77e-02 2.65e-02 2.36e-03 1.70e-06 8.49e-02 8.50e-02   ph/cm2/s
 
Fluence        Band 1.59e-08 2.00e-08 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 5.42e-09 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 2.74e-01 3.36e-02 1.78e-03 9.85e-05 3.09e-01 3.09e-01   ph/cm2/s
              Error 7.11e-02 2.52e-02 3.49e-03 4.35e-04 8.87e-02 8.87e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.936    1.341    -      -           2.19e-04 2.56e-04   49.845 57
CPL   1.703    0.000       1.6    0.0      1.85e-01 0.00e+00   48.815 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.936    1.341    -      -           2.19e-04 2.56e-04   49.845 57
CPL   1.703    0.000       1.6    0.0      1.85e-01 0.00e+00   48.815 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    2.048    0.000    2.048
T90     2.048    0.000    2.048
T50     2.048    0.000    2.048
Peak    2.048   -0.000    2.048

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  272.6389 -26.1331 0.0345    6.5   66.8       0.0775     5.5  TRIG_00292421       
------------------------------------------
 
Foreground time interval of the image:
  0.000   2.048 (delta_t =   2.048 [sec])
Background time interval of the image:
-239.496 -17.526 (delta_t = 221.970 [sec])
-16.496 -10.496 (delta_t =   6.000 [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    2.048 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.93629     ( -0.843704   1.83868 )
Norm@50keV  : 2.190258E-04    ( -2.190258E-04   2.932299E-04) )
------------------------------------------------------------
 Chi-Squared =      49.84458     using    59 PHA bins.
 Reduced chi-squared =     0.8744663     for     57 degrees of freedom
 Null hypothesis probability = 0.738
 
Photon flux (15-150 keV)    in 2.048 sec: 0.309293 ( -0.088365  0.089011 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.99088e-08 ( -6.41274e-09  7.06415e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    2.048 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70293     (     )
Epeak [keV] : 1.59438      (   )
Norm@50keV  : 0.184813    (     )
------------------------------------------------------------
 Chi-Squared =      48.81537     using    59 PHA bins.
 Reduced chi-squared =     0.8717031     for     56 degrees of freedom
 Null hypothesis probability = 0.741
 
Photon flux (15-150 keV)    in 2.048 sec: 0.318631 ( -0.084887  0.084887 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.99081e-08 ( -6.42195e-09  7.05712e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    2.048 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.11257   ( -0.887435   4.21118 )
beta        : -5.23714    ( -1.48384   1.11336 )
Epeak [keV] : 296.447      ( -296.347 9703.55 )
Norm@50keV   : 2.168929E-02    ( -1.778886E-02   4.596723E-02) )
------------------------------------------------------------
 Chi-Squared =      49.67793     using    59 PHA bins.
 Reduced chi-squared =     0.9032351     for     55 degrees of freedom
 Null hypothesis probability = 0.677
 
Photon flux (15-150 keV)    in 2.048 sec: 0.308995 ( -0.088336  0.088983 ) 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    2.048 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.93629     ( -0.843704   1.83868 )
Norm@50keV  : 2.190258E-04    ( -2.190258E-04   2.932299E-04) )
------------------------------------------------------------
 Chi-Squared =      49.84458     using    59 PHA bins.
 Reduced chi-squared =     0.8744663     for     57 degrees of freedom
 Null hypothesis probability = 0.738
 
Photon flux (15-150 keV)    in 2.048 sec: 0.309293 ( -0.088365  0.089011 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.99088e-08 ( -6.41274e-09  7.06415e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    2.048 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70293     (     )
Epeak [keV] : 1.59438      (   )
Norm@50keV  : 0.184813    (     )
------------------------------------------------------------
 Chi-Squared =      48.81537     using    59 PHA bins.
 Reduced chi-squared =     0.8717031     for     56 degrees of freedom
 Null hypothesis probability = 0.741
 
Photon flux (15-150 keV)    in 2.048 sec: 0.318631 ( -0.084887  0.084887 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.99081e-08 ( -6.42195e-09  7.05712e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    2.048 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.11257   ( -0.301807   6.26560 )
beta        : -5.23714    ( -3.38136   2.28890 )
Epeak [keV] : 296.447      ( -3.42379 6.94913 )
Norm@50keV   : 2.168929E-02    ( -0.432674   29.2982 )
------------------------------------------------------------
 Chi-Squared =      49.67793     using    59 PHA bins.
 Reduced chi-squared =     0.9032351     for     55 degrees of freedom
 Null hypothesis probability = 0.677
 
Photon flux (15-150 keV)    in 2.048 sec: 0.308995 ( -0.088336  0.088983 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Fri Dec 14 16:09:59 EST 2007