batgrbproduct Analysis for Trigger=333666

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Nov  5 00:57:49 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger333666/GCN5_download_cron
======================================================================

  Trigger: 00333666      Segment: 000

  BAT Trigger Time: 247484085.696   [s; MET]
      Trigger Stop: 247484093.888   [s; MET]
               UTC: 2008-11-04T09:34:42.467620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 100.485289941374   Dec: -54.7321618369165  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.32
     Image Trigger?:     NO
     Rate S/N Ratio:     6.70820393249937  [ if not an image trigger ]
     Image S/N Ratio:    9.32

  Flight Position:   [ source = BAT ]
    RA: 100.485289941374   Dec: -54.7321618369165  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 100.499836366604   Dec: -54.7215096827174  [deg; J2000]  
        { 06h 42m 00.0s , -54d 43' 17.4" }
         +/- 1.31459701811596 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.574388581179863 [arcmin] (formal 1-sigma fit error)
    SNR: 20.5785421404905
 
  Angular difference between Flight and Ground position is 0.813950 arcmin
 
  Partial Coding Fraction: 0.3203125    [ including projection effects ]

  Duration
     T90: 59.0640000104904 +/- 13.8551916840475
        Measured from: -14.8759999275208
                   to: 44.1880000829697     [s; relative to TRIGTIME]
     T50: 22.4280000329018 +/- 4.10385574499634
        Measured from: 6.09200006723404
                   to: 28.5200001001358     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 13.5399999916553     
                   to: 14.5399999916553     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -23.5     
                   to: 51.1719999909401     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.171871   1.298040   0.748878   0.101981
           0.083201   0.084825   0.076424   0.071020 [error]
 Peak      0.037165   0.043656   0.021218   0.026583
           0.009805   0.010099   0.009204   0.008590 [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 4.37e-07 5.94e-07 5.95e-07 1.08e-06 1.97e-06 2.71e-06   erg/cm2
              Error 5.07e-08 4.57e-08 7.39e-08 2.69e-07 1.72e-07 3.45e-07   erg/cm2
Peak flux Power-law 4.02e-01 3.47e-01 2.06e-01 1.82e-01 1.03e+00 1.14e+00   ph/cm2/s
              Error 1.75e-01 9.37e-02 7.71e-02 1.42e-01 2.77e-01 2.97e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.03e-07 6.38e-07 5.97e-07 4.18e-07 1.88e-06 2.07e-06   erg/cm2
              Error 5.89e-08 5.97e-08 8.23e-08 3.67e-07 1.89e-07 4.15e-07   erg/cm2
Peak flux Cutoff-PL 4.02e-01 3.48e-01 2.06e-01 1.81e-01 1.03e+00 1.14e+00   ph/cm2/s
              Error 1.75e-01 9.37e-02 7.72e-02 1.41e-01 2.77e-01 2.97e-01   ph/cm2/s
 
Fluence        Band 3.99e-07 6.35e-07 5.95e-07 4.16e-07 1.87e-06 2.11e-06   erg/cm2
              Error 5.83e-08 5.95e-08 8.21e-08 3.66e-07 1.89e-07 5.01e-07   erg/cm2
Peak flux      Band 4.12e-01 5.35e-01 3.17e-01 2.82e-01 1.59e+00 1.14e+00   ph/cm2/s
              Error 3.02e-01 2.55e-01 1.59e-01 9.00e-01 2.96e-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    1.997    0.143    -      -           2.87e-03 2.60e-04   59.964 57
CPL   1.338    0.607      45.2   19.0      6.56e-03 5.76e-03   55.890  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.757    0.508    -      -           7.62e-03 2.20e-03   58.235 57
CPL   2.133    0.942      54.8 4977.5      4.72e-03 2.57e-02   58.127 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: 43.264000 sec.
T50 in the 50-300 keV band: 19.840000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   74.672  -23.500   51.172
T90    59.064  -14.876   44.188
T50    22.428    6.092   28.520
Peak    1.000   13.540   14.540

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  100.4998 -54.7215 0.0093   47.9 -177.4       3.6971    20.6  TRIG_00333666       
------------------------------------------
 
Foreground time interval of the image:
-23.500  51.172 (delta_t =  74.672 [sec])
Background time interval of the image:
-239.696 -23.500 (delta_t = 216.196 [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  -23.500 sec. to   51.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99705     ( -0.140249   0.145545 )
Norm@50keV  : 2.866352E-03    ( -2.624365E-04   2.585365E-04) )
------------------------------------------------------------
 Chi-Squared =      59.96420     using    59 PHA bins.
 Reduced chi-squared =      1.052004     for     57 degrees of freedom
 Null hypothesis probability = 0.369
 
Photon flux (15-150 keV)    in 74.67 sec: 0.429372 ( -0.03383  0.033879 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.9733e-06 ( -1.70964e-07  1.72951e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -23.500 sec. to   51.172 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33798     ( -0.654608   0.559886 )
Epeak [keV] : 45.1718      ( -17.4975 20.4996 )
Norm@50keV  : 6.564439E-03    ( -3.278157E-03   8.248027E-03) )
------------------------------------------------------------
 Chi-Squared =      55.89003     using    59 PHA bins.
 but latest trial   1.89846     gives Chi-Squared =   2.79434
 Reduced chi-squared =     0.9980363     for     56 degrees of freedom
 Null hypothesis probability = 0.479
 
Photon flux (15-150 keV)    in 74.67 sec: 0.416693 ( -0.035465  0.035439 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.87689e-06 ( -1.88437e-07  1.89878e-07 ) ergs/cm2
 
Band function
Time interval is from  -23.500 sec. to   51.172 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.33982   ( -0.563157   0.656471 )
beta        : -8.25356    ( -1.74644   6.22222 )
Epeak [keV] : 45.1886      ( -12.4788 20.6248 )
Norm@50keV   : 6.546139E-03    ( -6.546139E-03   8.268625E-03) )
------------------------------------------------------------
 Chi-Squared =      55.89034     using    59 PHA bins.
 Reduced chi-squared =      1.016188     for     55 degrees of freedom
 Null hypothesis probability = 0.441
 
Photon flux (15-150 keV)    in 74.67 sec: 0.416705 ( -0.035496  0.035471 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.87447e-06 ( -1.88161e-07  1.89848e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   13.540 sec. to   14.540 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75726     ( -0.489915   0.525205 )
Norm@50keV  : 7.623874E-03    ( -2.262296E-03   2.141600E-03) )
------------------------------------------------------------
 Chi-Squared =      58.23493     using    59 PHA bins.
 Reduced chi-squared =      1.021665     for     57 degrees of freedom
 Null hypothesis probability = 0.430
 
Photon flux (15-150 keV)    in 1.000 sec: 1.03365 ( -0.27635  0.27741 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.0332e-08 ( -2.06501e-08  2.11341e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   13.540 sec. to   14.540 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.13344     ( -1.85091   3.317499E-02) )
Epeak [keV] : 54.8495      ( -9.79060 9945.15 )
Norm@50keV  : 4.723898E-03    ( -4.723899E-03   4.677211E-02) )
------------------------------------------------------------
 Chi-Squared =      58.12718     using    59 PHA bins.
 Reduced chi-squared =      1.037985     for     56 degrees of freedom
 Null hypothesis probability = 0.397
 
Photon flux (15-150 keV)    in 1.000 sec: 1.03327 ( -0.276252  0.27731 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.0321e-08 ( -2.0651e-08  2.11637e-08 ) ergs/cm2
 
Band function
Time interval is from   13.540 sec. to   14.540 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.24673   ( -8.75327   5.67497 )
beta        : -1.78766    ( -8.21234   0.514444 )
Epeak [keV] : 40.4270      ( -40.3270 9959.57 )
Norm@50keV   : 1.764613E-02    ( -1.00968   858.664 )
------------------------------------------------------------
 Chi-Squared =      58.17356     using    59 PHA bins.
 Reduced chi-squared =      1.057701     for     55 degrees of freedom
 Null hypothesis probability = 0.359
 
Photon flux (15-150 keV)    in 1.000 sec: 1.59052 ( -0.82475  0.97468 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.0008e-08 ( -2.24032e-08  2.09964e-08 ) ergs/cm2
 
Plot creation:
Wed Nov  5 01:16:41 EST 2008