batgrbproduct Analysis for Trigger=358336

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Jul 26 13:25:32 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger358336/GCN5_download_cron
======================================================================

  Trigger: 00358336      Segment: 000

  BAT Trigger Time: 270268810.816   [s; MET]
      Trigger Stop: 270268811.84   [s; MET]
               UTC: 2009-07-26T02:40:05.873500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 12.8629207326255   Dec: 67.5690760783838  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.91
     Image Trigger?:     NO
     Rate S/N Ratio:     16.3401346383682  [ if not an image trigger ]
     Image S/N Ratio:    5.91

  Flight Position:   [ source = BAT ]
    RA: 12.8629207326255   Dec: 67.5690760783838  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 12.6724435705595   Dec: 67.5391744023948  [deg; J2000]  
        { 00h 50m 41.4s , +67d 32' 21.0" }
         +/- 5.61805290839555 [arcmin] (estimated 90% radius based on SNR)
         +/- 4.16205300984865 [arcmin] (formal 1-sigma fit error)
    SNR: 2.58393442110206
 
  Angular difference between Flight and Ground position is 4.718000 arcmin
 
  Partial Coding Fraction: 0.1328125    [ including projection effects ]

  Duration
     T90: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     T50: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1.02399998903275 second)
        Measured from: -2.98023223876953e-08     
                   to: 1.02399995923042     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.039916  -0.000600   0.049130   0.078064
           0.022075   0.025204   0.025896   0.031052 [error]
 Peak     -0.039916  -0.000600   0.049130   0.078064
           0.022075   0.025204   0.025896   0.031052 [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 5.31e-10 4.00e-09 2.65e-08 9.14e-07 9.40e-08 9.59e-07   erg/cm2
              Error 2.30e-09 7.75e-09 2.58e-08 1.06e-06 7.92e-08 1.07e-06   erg/cm2
Peak flux Power-law 1.62e-02 6.37e-02 2.10e-01 2.30e+00 5.94e-01 2.59e+00   ph/cm2/s
              Error 7.11e-02 1.28e-01 2.10e-01 2.51e+00 5.69e-01 2.28e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.77e-10 2.87e-09 3.01e-08 3.57e-07 1.02e-07 3.54e-07   erg/cm2
              Error 2.19e-09 7.33e-09 3.15e-08 1.85e-06 8.34e-08 1.86e-06   erg/cm2
Peak flux Cutoff-PL 4.85e-03 4.22e-02 2.32e-01 1.13e+00 6.14e-01 1.42e+00   ph/cm2/s
              Error 6.77e-02 1.23e-01 2.55e-01 4.15e+00 4.84e-01 4.02e+00   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 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.719    1.429    -      -           3.15e-03 4.53e-03   56.600 57
CPL  -2.681    0.319     234.9    0.0      7.08e-03 1.67e-01   56.420 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.719    1.429    -      -           3.15e-03 4.53e-03   56.600 57
CPL  -2.681    0.319     234.9    0.0      7.08e-03 1.67e-01   56.420 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    1.024    0.000    1.024
T90     1.024    0.000    1.024
T50     1.024    0.000    1.024
Peak    1.024   -0.000    1.024

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   12.6724 +67.5392 0.0744   54.9   -4.8       0.1475     2.6  TRIG_00358336       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.024 (delta_t =   1.024 [sec])
Background time interval of the image:
-51.315 -10.816 (delta_t =  40.499 [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    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.718693     ( -1.43818   1.42015 )
Norm@50keV  : 3.14833E-03    ( -0.00314695   0.0059147 )
------------------------------------------------------------
# Chi-Squared =          56.60 using 59 PHA bins.
# Reduced chi-squared =         0.9930 for     57 degrees of freedom 
# Null hypothesis probability =   4.900688e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.593670 ( -0.59367  0.54425 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.39728e-08 ( -9.4013e-08  6.43713e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.68102     ( 2.75071   3.38851 )
Epeak [keV] : 234.915      ( -220.195 -220.195 )
Norm@50keV  : 7.07856E-03    ( -0.00770197   0.325879 )
------------------------------------------------------------
# Chi-Squared =          56.42 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     56 degrees of freedom 
# Null hypothesis probability =   4.592071e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.613870 ( -0.455553  0.51298 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0156e-07 ( -1.0156e-07  6.52485e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.18669   ( 0.186528   0.186528 )
beta        : -2.18430    ( 7.26912   9.38287 )
Epeak [keV] : 203.327      ( -117.259 -203.621 )
Norm@50keV   : 9.08976E-03    ( -0.00898079   0.128837 )
------------------------------------------------------------
# Chi-Squared =          56.42 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.215578e-01
 
Photon flux (15-150 keV)    in 1.024 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    0.000 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.718693     ( -1.43818   1.42015 )
Norm@50keV  : 3.14833E-03    ( -0.00314695   0.0059147 )
------------------------------------------------------------
# Chi-Squared =          56.60 using 59 PHA bins.
# Reduced chi-squared =         0.9930 for     57 degrees of freedom 
# Null hypothesis probability =   4.900688e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.593670 ( -0.59367  0.54425 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.39728e-08 ( -9.4013e-08  6.43713e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.68102     ( 2.75071   3.38851 )
Epeak [keV] : 234.915      ( -220.195 -220.195 )
Norm@50keV  : 7.07856E-03    ( -0.00770197   0.326454 )
------------------------------------------------------------
# Chi-Squared =          56.42 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     56 degrees of freedom 
# Null hypothesis probability =   4.592071e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.613870 ( -0.455553  0.51298 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0156e-07 ( -1.0156e-07  6.52485e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.18669   ( 0.186528   0.186528 )
beta        : -2.18430    ( 7.26912   9.38287 )
Epeak [keV] : 203.327      ( -117.259 -203.621 )
Norm@50keV   : 9.08976E-03    ( -0.00898079   0.128826 )
------------------------------------------------------------
# Chi-Squared =          56.42 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.215578e-01
 
Photon flux (15-150 keV)    in 1.024 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Sun Jul 26 13:49:08 EDT 2009