batgrbproduct Analysis for Trigger=210084

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 12:27:18 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger210084/SDC
======================================================================

  Trigger: 00210084      Segment: 000

  BAT Trigger Time: 169352874.112   [s; MET]
      Trigger Stop: 169352882.304   [s; MET]
               UTC: 2006-05-15T02:27:52.918180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 127.287530616633   Dec: 73.550864318477  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.76
     Image Trigger?:     NO
     Rate S/N Ratio:     16.6132477258361  [ if not an image trigger ]
     Image S/N Ratio:    7.76

  Flight Position:   [ source = BAT ]
    RA: 127.287530616633   Dec: 73.550864318477  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 127.273346729493   Dec: 73.5502180360665  [deg; J2000]  
        { 08h 29m 05.6s , +73d 33' 00.8" }
         +/- 1.85335365567853 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.833907379192378 [arcmin] (formal 1-sigma fit error)
    SNR: 12.5985571384187
    RA  =   8h 29m  5.6s  (127.273347 deg.)
    Dec =  73d 33'  1" (73.550218 deg.)
 
  Angular difference between Flight and Ground position is 0.244086 arcmin
 
  Partial Coding Fraction: 0.3828125    [ including projection effects ]

  Duration
     T90: 336 +/- 475.17575695736
        Measured from: 0.888000011444092
                   to: 336.888000011444     [s; relative to TRIGTIME]
     T50: 336 +/- 254.621287405433
        Measured from: 0.888000011444092
                   to: 336.888000011444     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 344.388000011444     
                   to: 345.388000011444     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.888000011444092     
                   to: 336.888000011444     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.358623   1.083519   1.421860   2.029303
           0.386243   0.420169   0.408208   0.462591 [error]
 Peak     -0.221750   0.543297   0.129545   0.873704
           0.142295   0.171287   0.184773   0.237535 [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 9.08e-08 3.39e-07 1.05e-06 1.06e-05 2.95e-06 1.23e-05   erg/cm2
              Error 9.73e-08 1.96e-07 3.73e-07 8.53e-06 1.04e-06 8.54e-06   erg/cm2
Peak flux Power-law 4.40e-02 7.86e-02 1.09e-01 3.11e-01 3.13e-01 5.47e-01   ph/cm2/s
              Error 7.11e-02 8.48e-02 8.77e-02 1.07e+00 1.11e+00 0.00e+00   ph/cm2/s
 
Fluence   Cutoff-PL 3.46e-08 3.52e-07 1.45e-06 1.54e-06 2.86e-06 3.46e-06   erg/cm2
              Error 5.06e-08 2.12e-07 4.82e-07 4.02e-06 1.05e-06 3.76e-06   erg/cm2
Peak flux Cutoff-PL 5.48e-02 1.58e-01 1.08e-01 9.24e-03 3.28e-01 3.24e-01   ph/cm2/s
              Error 6.55e-02 1.38e-01 1.06e-01 5.10e-01 2.28e-01 2.30e-01   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 3.67e-02 1.37e-01 1.30e-01 1.17e-01 3.56e-01 4.62e-01   ph/cm2/s
              Error 1.37e-01 9.84e-02 3.19e-01 2.40e-01 8.94e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.360    0.664    -      -           6.07e-04 4.42e-04   49.036 57
CPL  -2.500    0.000     102.0   42.0      7.58e-03 1.83e-02   45.422  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.545    0.000    -      -           2.67e-03 2.47e-03   53.066 57
CPL  -2.500    0.000      61.2  130.4      1.99e-01 0.00e+00   51.636  0
 
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: 26.496000 sec.
T50 in the 50-300 keV band: 15.616000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  336.000    0.888  336.888
T90   336.000    0.888  336.888
T50   336.000    0.888  336.888
Peak    1.000  344.388  345.388

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  127.2733 +73.5502 0.0153   36.3 -125.6       2.5104    12.6  TRIG_00210084       
------------------------------------------
 
Foreground time interval of the image:
  0.888 131.493 (delta_t = 130.605 [sec])
Background time interval of the image:
-239.112   0.888 (delta_t = 240.000 [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    0.888 sec. to  336.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.360463     ( -0.744262   0.583691 )
Norm@50keV  : 6.071665E-04    ( -6.071664E-04   2.759155E-04) )
------------------------------------------------------------
 Chi-Squared =      49.03605     using    59 PHA bins.
 Reduced chi-squared =     0.8602816     for     57 degrees of freedom
 Null hypothesis probability = 0.764
 
Photon flux (15-150 keV)    in 336.0 sec: 7.388622E-02 ( -0.0278102  0.0290578 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.94996e-06 ( -1.03881e-06  1.04707e-06 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.888 sec. to  336.888 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.49999     (     )
Epeak [keV] : 102.025      ( -25.8849 58.1388 )
Norm@50keV  : 7.582567E-03    ( -1.073774E-02   2.580633E-02) )
------------------------------------------------------------
 Chi-Squared =      45.42223     using    59 PHA bins.
 but latest trial   155.759     gives Chi-Squared =   1.28281
 Reduced chi-squared =     0.8111113     for     56 degrees of freedom
 Null hypothesis probability = 0.843
 
Photon flux (15-150 keV)    in 336.0 sec: 7.287187E-02 ( -0.023859  0.0253788 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.86072e-06 ( -1.01728e-06  1.07398e-06 ) ergs/cm2
 
Band function
Time interval is from    0.888 sec. to  336.888 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.25082   ( -2.40306   2.74918 )
beta        : -9.30486    (     )
Epeak [keV] : 114.080      (   )
Norm@50keV   : 4.859789E-03    (     )
------------------------------------------------------------
 Chi-Squared =      45.63783     using    59 PHA bins.
 Reduced chi-squared =     0.8297788     for     55 degrees of freedom
 Null hypothesis probability = 0.812
 
Photon flux (15-150 keV)    in 336.0 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  336.888 sec. to  352.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.544797     (     )
Norm@50keV  : 2.674233E-03    ( -3.804206E-05   4.907810E-03) )
------------------------------------------------------------
 Chi-Squared =      53.06619     using    59 PHA bins.
 Reduced chi-squared =     0.9309858     for     57 degrees of freedom
 Null hypothesis probability = 0.623
 
Photon flux (15-150 keV)    in 16.00 sec: 0.312695 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.60746e-07 ( -4.58109e-07  4.76114e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  336.888 sec. to  352.888 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.49990     (     )
Epeak [keV] : 61.2115      ( -54.3061 206.404 )
Norm@50keV  : 0.198794    (     )
------------------------------------------------------------
 Chi-Squared =      51.63602     using    59 PHA bins.
 but latest trial   423.402     gives Chi-Squared =   3.38545
 Reduced chi-squared =     0.9220719     for     56 degrees of freedom
 Null hypothesis probability = 0.641
 
Photon flux (15-150 keV)    in 16.00 sec: 0.327760 ( -0.227867  0.227954 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.93837e-07 ( -2.83859e-07  4.93726e-07 ) ergs/cm2
 
Band function
Time interval is from  336.888 sec. to  352.888 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.22286   ( -14.9974   2.649784E-03) )
beta        : -2.73547    ( -7.09129   12.9087 )
Epeak [keV] : 51.8805      ( -51.2672 527.327 )
Norm@50keV   : 2.20014    ( -5.29838   197220. )
------------------------------------------------------------
 Chi-Squared =      50.94204     using    59 PHA bins.
 Reduced chi-squared =     0.9262190     for     55 degrees of freedom
 Null hypothesis probability = 0.630
 
Photon flux (15-150 keV)    in 16.00 sec: 0.356251 ( -0.237522  0.242745 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.46213e-07 ( -3.94355e-07  3.70693e-07 ) ergs/cm2
 
Plot creation:
Tue Jan  1 12:51:33 EST 2008