batgrbproduct Analysis for Trigger=209351

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Sep  2 08:18:34 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger209351/SDC
======================================================================

  Trigger: 00209351      Segment: 000

  BAT Trigger Time: 168939808.832   [s; MET]
      Trigger Stop: 168939809.856   [s; MET]
               UTC: 2006-05-10T07:43:27.647800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 95.8704790734399   Dec: -1.16215654342009  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.16
     Image Trigger?:     NO
     Rate S/N Ratio:     63.8435587980495  [ if not an image trigger ]
     Image S/N Ratio:    9.16

  Flight Position:   [ source = BAT ]
    RA: 95.8704790734399   Dec: -1.16215654342009  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 95.8626796026018   Dec: -1.1611206324408  [deg; J2000]  
        { 06h 23m 27.0s , -01d 09' 40.0" }
         +/- 1.38386110830459 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.358050742388293 [arcmin] (formal 1-sigma fit error)
    SNR: 19.1230719787535
 
  Angular difference between Flight and Ground position is 0.471982 arcmin
 
  Partial Coding Fraction: 0.06738281    [ including projection effects ]

  Duration
     T90: 20.3680000007153 +/- 1.13971924174702
        Measured from: -5.63999998569489
                   to: 14.7280000150204     [s; relative to TRIGTIME]
     T50: 5.86800000071526 +/- 0.534655027752565
        Measured from: -1.03599998354912
                   to: 4.83200001716614     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.292000025510788     
                   to: 1.29200002551079     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -6.97599998116493     
                   to: 16.7480000257492     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.348979   4.249718   3.536499   0.805960
           0.123453   0.133937   0.126485   0.102731 [error]
 Peak      0.424376   0.567734   0.541375   0.145806
           0.035594   0.039895   0.039597   0.027426 [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 1.18e-06 2.06e-06 2.74e-06 7.48e-06 7.99e-06 1.39e-05   erg/cm2
              Error 8.12e-08 8.26e-08 1.29e-07 7.83e-07 3.10e-07 0.00e+00   erg/cm2
Peak flux Power-law 4.72e+00 4.84e+00 3.50e+00 4.06e+00 1.46e+01 1.71e+01   ph/cm2/s
              Error 6.17e-01 3.87e-01 3.19e-01 7.63e-01 1.10e+00 1.26e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.12e-06 2.09e-06 2.80e-06 5.64e-06 7.89e-06 1.00e-05   erg/cm2
              Error 1.05e-07 9.15e-08 1.45e-07 1.95e-06 3.37e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 4.56e+00 4.90e+00 3.57e+00 3.45e+00 1.45e+01 1.65e+01   ph/cm2/s
              Error 7.56e-01 4.25e-01 3.76e-01 1.31e+00 1.12e+00 1.81e+00   ph/cm2/s
 
Fluence        Band 1.11e-06 2.08e-06 2.79e-06 5.67e-06 7.89e-06 1.01e-05   erg/cm2
              Error 1.04e-07 9.14e-08 1.45e-07 1.95e-06 3.37e-07 0.00e+00   erg/cm2
Peak flux      Band 4.55e+00 4.90e+00 3.57e+00 3.45e+00 1.45e+01 1.65e+01   ph/cm2/s
              Error 7.56e-01 4.25e-01 3.76e-01 1.31e+00 1.13e+00 1.81e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.585    0.068    -      -           3.60e-02 1.32e-03   55.231 57
CPL   1.375    0.268     161.4 4953.2      4.51e-02 1.28e-02   53.461  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.467    0.128    -      -           1.18e-01 8.73e-03   63.023 57
CPL   1.300    0.389     226.4 5000.0      1.42e-01 6.36e-02   62.681 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: 19.328000 sec.
T50 in the 50-300 keV band: 5.248000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   23.724   -6.976   16.748
T90    20.368   -5.640   14.728
T50     5.868   -1.036    4.832
Peak    1.000    0.292    1.292

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   95.8627  -1.1611 0.0100   44.2  -69.3      12.7857    19.1  TRIG_00209351       
------------------------------------------
 
Foreground time interval of the image:
 -6.976  16.748 (delta_t =  23.724 [sec])
Background time interval of the image:
-107.027  -6.976 (delta_t = 100.051 [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   -6.976 sec. to   16.748 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58535     ( -6.754065E-02   6.809556E-02) )
Norm@50keV  : 3.596339E-02    ( -1.318909E-03   1.317024E-03) )
------------------------------------------------------------
 Chi-Squared =      55.23106     using    59 PHA bins.
 Reduced chi-squared =     0.9689660     for     57 degrees of freedom
 Null hypothesis probability = 0.542
 
Photon flux (15-150 keV)    in 23.72 sec: 4.60079 ( -0.18106  0.18162 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.99286e-06 ( -3.10376e-07  3.10092e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -6.976 sec. to   16.748 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37491     ( -0.286136   0.249149 )
Epeak [keV] : 161.421      ( -67.8269 9838.58 )
Norm@50keV  : 4.507188E-02    ( -9.812407E-03   1.575041E-02) )
------------------------------------------------------------
 Chi-Squared =      53.46093     using    59 PHA bins.
 but latest trial   77.4982     gives Chi-Squared =   11.7727
 Reduced chi-squared =     0.9546594     for     56 degrees of freedom
 Null hypothesis probability = 0.572
 
Photon flux (15-150 keV)    in 23.72 sec: 4.53385 ( -0.19786  0.19903 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.89404e-06 ( -3.37227e-07  3.36207e-07 ) ergs/cm2
 
Band function
Time interval is from   -6.976 sec. to   16.748 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.36237   ( -8.63763   0.473107 )
beta        : -1.79648    ( -7.52361   0.930673 )
Epeak [keV] : 151.143      ( -160.846 9839.05 )
Norm@50keV   : 4.573876E-02    ( -9.847280E-03   1.571465E-02) )
------------------------------------------------------------
 Chi-Squared =      53.52097     using    59 PHA bins.
 Reduced chi-squared =     0.9731085     for     55 degrees of freedom
 Null hypothesis probability = 0.531
 
Photon flux (15-150 keV)    in 23.72 sec: 29.4695 ( -9.8119  439.918 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.88792e-06 ( -3.37891e-07  3.35567e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.292 sec. to    1.292 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.46738     ( -0.126678   0.128524 )
Norm@50keV  : 0.118303    ( -8.743428E-03   8.721262E-03) )
------------------------------------------------------------
 Chi-Squared =      63.02316     using    59 PHA bins.
 Reduced chi-squared =      1.105669     for     57 degrees of freedom
 Null hypothesis probability = 0.272
 
Photon flux (15-150 keV)    in 1.000 sec: 14.6431 ( -1.0993  1.1015 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12852e-06 ( -9.1012e-08  9.1566e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.292 sec. to    1.292 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30001     ( -0.492198   0.285462 )
Epeak [keV] : 226.408      ( -226.398 9773.59 )
Norm@50keV  : 0.142153    ( -3.169754E-02   9.549937E-02) )
------------------------------------------------------------
 Chi-Squared =      62.68074     using    59 PHA bins.
 Reduced chi-squared =      1.119299     for     56 degrees of freedom
 Null hypothesis probability = 0.251
 
Photon flux (15-150 keV)    in 1.000 sec: 14.5414 ( -1.1081  1.1283 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12219e-06 ( -9.4137e-08  9.3649e-08 ) ergs/cm2
 
Band function
Time interval is from    0.292 sec. to    1.292 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.29665   ( -8.70335   6.29577 )
beta        : -1.46733    ( -0.128359   0.126619 )
Epeak [keV] : 45.1908      ( -0.420898 1.171875E-02) )
Norm@50keV   : 0.181795    ( -8.791521E-03   8.763663E-03) )
------------------------------------------------------------
 Chi-Squared =      63.02316     using    59 PHA bins.
 Reduced chi-squared =      1.145876     for     55 degrees of freedom
 Null hypothesis probability = 0.214
 
Photon flux (15-150 keV)    in 1.000 sec: 14.5414 ( -1.1352  1.1332 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12123e-06 ( -9.409e-08  9.3518e-08 ) ergs/cm2
 
Plot creation:
Tue Sep  2 08:59:02 EDT 2008