batgrbproduct Analysis for Trigger=362817

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Wed Sep 16 13:48:51 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger362817/GCN5_download_cron
======================================================================

  Trigger: 00362817      Segment: 000

  BAT Trigger Time: 274771768.804   [s; MET]
      Trigger Stop: 274771768.868   [s; MET]
               UTC: 2009-09-16T05:29:23.714580    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 138.305900571023   Dec: 23.9807261963547  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.02
     Image Trigger?:     NO
     Rate S/N Ratio:     8  [ if not an image trigger ]
     Image S/N Ratio:    6.02

  Flight Position:   [ source = BAT ]
    RA: 138.305900571023   Dec: 23.9807261963547  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 138.108244068256   Dec: 24.0047068655696  [deg; J2000]  
        { 09h 12m 26.0s , +24d 00' 16.9" }
         +/- 7.13365135585296 [arcmin] (estimated 90% radius based on SNR)
         +/- 5.33788488320246 [arcmin] (formal 1-sigma fit error)
    SNR: 1.83696722744265
 
  Angular difference between Flight and Ground position is 10.929825 arcmin
 
  Partial Coding Fraction: 0.4804688    [ including projection effects ]

  Duration
     T90: 0.0639999508857727 +/- 
        Measured from: 0
                   to: 0.0639999508857727     [s; relative to TRIGTIME]
     T50: 0.0639999508857727 +/- 
        Measured from: 0
                   to: 0.0639999508857727     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0639999508857727 second)
        Measured from: -2.98023223876953e-08     
                   to: 0.0639999210834503     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0639999508857727     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.000351  -0.001795   0.006540   0.007592
           0.002085   0.002091   0.002283   0.002282 [error]
 Peak     -0.000351  -0.001795   0.006540   0.007592
           0.002085   0.002091   0.002283   0.002282 [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 9.23e-11 2.02e-10 3.47e-10 1.38e-09 6.67e-09 2.28e-10   erg/cm2
              Error 4.56e-10 4.22e-10 3.95e-10 1.30e-09 1.06e-08 0.00e+00   erg/cm2
Peak flux Power-law 4.62e-02 5.50e-02 4.73e-02 6.77e-03 2.67e-01 1.95e-02   ph/cm2/s
              Error 2.37e-01 1.20e-01 3.90e-01 3.87e-01 3.97e-01 0.00e+00   ph/cm2/s
 
Fluence   Cutoff-PL 9.21e-11 2.02e-10 3.47e-10 1.37e-09 9.50e-10 2.00e-09   erg/cm2
              Error 4.55e-10 4.22e-10 3.95e-10 1.19e-08 1.30e-09 1.20e-08   erg/cm2
Peak flux Cutoff-PL 4.61e-02 5.50e-02 4.73e-02 6.30e-03 3.09e-01 2.01e-02   ph/cm2/s
              Error 2.37e-01 1.21e-01 4.36e-01 3.86e-01 2.56e-01 0.00e+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   -2.132    0.000    -      -           3.70e-05 0.00e+00   53.420 57
CPL  -2.911    0.000      81.5    0.0      3.92e-02 0.00e+00   53.440 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -2.132    0.000    -      -           3.70e-05 0.00e+00   53.420 57
CPL  -2.911    0.000      81.5    0.0      3.92e-02 0.00e+00   53.440 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    0.064    0.000    0.064
T90     0.064    0.000    0.064
T50     0.064    0.000    0.064
Peak    0.064   -0.000    0.064

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  138.1082 +24.0047 0.1052   42.6  -18.9       0.0082     1.8  TRIG_00362817       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-60.804  -8.804 (delta_t =  52.000 [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    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.13180     (     )
Norm@50keV  : 3.69822E-05    (     )
------------------------------------------------------------
# Chi-Squared =          53.42 using 59 PHA bins.
# Reduced chi-squared =         0.9371 for     57 degrees of freedom 
# Null hypothesis probability =   6.103070e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.94967E-02 ( -0.0194967  0.754901 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.28076e-10 ( -2.26665e-10  2.36705e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.91149     ( -1.3242   -1.3242 )
Epeak [keV] : 81.4592      ( -9993.4 -9993.4 )
Norm@50keV  : 3.92389E-02    (     )
------------------------------------------------------------
# Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9543 for     56 degrees of freedom 
# Null hypothesis probability =   5.723623e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 2.00809E-02 ( -0.0200809  0.752257 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.50438e-10 ( -9.50438e-10  1.65459e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.361219   ( 0.312279   0.312279 )
beta        : -1.47586    ( 1.49674   1.49674 )
Epeak [keV] : 114.410      ( -116.654 -116.654 )
Norm@50keV   : 3.30304E-03    ( -0.00350575   1122.49 )
------------------------------------------------------------
# Chi-Squared =          53.45 using 59 PHA bins.
# Reduced chi-squared =         0.9719 for     55 degrees of freedom 
# Null hypothesis probability =   5.339277e-01
 
Photon flux (15-150 keV)    in 0.064 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    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.13180     (     )
Norm@50keV  : 3.69822E-05    (     )
------------------------------------------------------------
# Chi-Squared =          53.42 using 59 PHA bins.
# Reduced chi-squared =         0.9371 for     57 degrees of freedom 
# Null hypothesis probability =   6.103070e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.94967E-02 ( -0.0194967  0.754901 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.28076e-10 ( -2.26665e-10  2.36705e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.91149     ( -1.3242   -1.3242 )
Epeak [keV] : 81.4592      ( -9993.4 -9993.4 )
Norm@50keV  : 3.92389E-02    (     )
------------------------------------------------------------
# Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9543 for     56 degrees of freedom 
# Null hypothesis probability =   5.723623e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 2.00809E-02 ( -0.0200809  0.752257 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.50438e-10 ( -9.50438e-10  1.65459e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.361219   ( 0.312279   0.312279 )
beta        : -1.47586    ( 1.49674   1.49674 )
Epeak [keV] : 114.410      ( -116.654 -116.654 )
Norm@50keV   : 3.30304E-03    ( -0.00350575   1122.49 )
------------------------------------------------------------
# Chi-Squared =          53.45 using 59 PHA bins.
# Reduced chi-squared =         0.9719 for     55 degrees of freedom 
# Null hypothesis probability =   5.339277e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Wed Sep 16 13:56:27 EDT 2009