batgrbproduct Analysis for Trigger=339131

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.42
    Process Start Time (local time): Sun Jan  4 16:07:27 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger339131/GCN5_download_cron
======================================================================

  Trigger: 00339131      Segment: 000

  BAT Trigger Time: 252733960   [s; MET]
      Trigger Stop: 252734472   [s; MET]
               UTC: 2009-01-04T03:52:35.612080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 170.29909863048   Dec: -61.9130042604188  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.87
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.87

  Flight Position:   [ source = BAT ]
    RA: 170.29909863048   Dec: -61.9130042604188  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 170.277427972093   Dec: -61.9690958730143  [deg; J2000]  
        { 11h 21m 06.6s , -61d 58' 08.7" }
         +/- 3.31948467301537 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.40198714007573 [arcmin] (formal 1-sigma fit error)
    SNR: 5.47938367910218
 
  Angular difference between Flight and Ground position is 3.420618 arcmin
 
  Partial Coding Fraction: 0.953125    [ including projection effects ]

  Duration
     T90: 512 +/- 
        Measured from: 0
                   to: 512     [s; relative to TRIGTIME]
     T50: 512 +/- 
        Measured from: 0
                   to: 512     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 512 second)
        Measured from: 0     
                   to: 512     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 512     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.147802   0.804588  -0.003109   0.024246
           0.123944   0.125569   0.119378   0.127230 [error]
 Peak      1.147802   0.804588  -0.003109   0.024246
           0.123944   0.125569   0.119378   0.127230 [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 3.50e-07 2.85e-07 1.57e-07 1.27e-07 8.50e-07 9.19e-07   erg/cm2
              Error 5.93e-08 6.32e-08 7.00e-08 1.02e-07 1.82e-07 2.37e-07   erg/cm2
Peak flux Power-law 2.27e-02 1.04e-02 2.86e-03 9.83e-04 3.65e-02 3.69e-02   ph/cm2/s
              Error 3.92e-03 2.20e-03 1.23e-03 9.57e-04 5.88e-03 6.03e-03   ph/cm2/s
 
Fluence   Cutoff-PL 3.57e-07 3.29e-07 2.60e-08 3.37e-11 7.12e-07 7.12e-07   erg/cm2
              Error 6.63e-08 8.83e-08 4.99e-08 3.53e-09 1.35e-07 1.35e-07   erg/cm2
Peak flux Cutoff-PL 2.24e-02 1.24e-02 5.55e-04 3.83e-07 3.54e-02 3.54e-02   ph/cm2/s
              Error 4.34e-03 3.06e-03 1.05e-03 3.71e-05 5.56e-03 5.56e-03   ph/cm2/s
 
Fluence        Band 3.54e-07 3.31e-07 3.29e-08 2.75e-10 7.13e-07 7.69e-07   erg/cm2
              Error 6.39e-08 8.28e-08 2.47e-08 3.02e-10 1.18e-07 0.00e+00   erg/cm2
Peak flux      Band 2.27e-02 1.21e-02 1.54e-03 3.09e-05 3.64e-02 3.64e-02   ph/cm2/s
              Error 3.47e-03 2.41e-03 7.09e-04 3.66e-04 5.53e-03 5.55e-03   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.829    0.385    -      -           1.50e-04 4.96e-05   63.243 57
CPL  -0.916    0.000      21.9    3.0      7.36e-02 0.00e+00   54.643 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.829    0.385    -      -           1.50e-04 4.96e-05   63.243 57
CPL  -0.916    0.000      21.9    3.0      7.36e-02 0.00e+00   54.643 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  512.000    0.000  512.000
T90   512.000    0.000  512.000
T50   512.000    0.000  512.000
Peak  512.000    0.000  512.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  170.2774 -61.9691 0.0351   20.9  176.9       2.0119     5.5  TRIG_00339131       
------------------------------------------
 
Foreground time interval of the image:
  0.000 512.000 (delta_t = 512.000 [sec])
Background time interval of the image:

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  512.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.82905     ( -0.325383   0.444054 )
Norm@50keV  : 1.503727E-04    ( -5.123829E-05   4.796537E-05) )
------------------------------------------------------------
 Chi-Squared =      63.24257     using    59 PHA bins.
 Reduced chi-squared =      1.109519     for     57 degrees of freedom
 Null hypothesis probability = 0.265
 
Photon flux (15-150 keV)    in 512.0 sec: 3.652554E-02 ( -0.00586402  0.00589261 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.49516e-07 ( -1.74177e-07  1.89911e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  512.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.916320     (     )
Epeak [keV] : 21.8616      ( -2.84668 3.17656 )
Norm@50keV  : 7.363704E-02    (     )
------------------------------------------------------------
 Chi-Squared =      54.64339     using    59 PHA bins.
 Reduced chi-squared =     0.9757748     for     56 degrees of freedom
 Null hypothesis probability = 0.526
 
Photon flux (15-150 keV)    in 512.0 sec: 3.544348E-02 ( -0.00551173  0.00560382 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11916e-07 ( -1.24022e-07  1.45664e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  512.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.33131   ( -0.540308   0.644845 )
beta        : -9.36474    ( -0.635262   19.3647 )
Epeak [keV] : 13.1171      ( -10.0653 3.20692 )
Norm@50keV   : 1.737645E-03    ( -0.269598   29.0092 )
------------------------------------------------------------
 Chi-Squared =      57.29034     using    59 PHA bins.
 Reduced chi-squared =      1.041643     for     55 degrees of freedom
 Null hypothesis probability = 0.390
 
Photon flux (15-150 keV)    in 512.0 sec: 3.637007E-02 ( -0.00552649  0.00553455 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.13037e-07 ( -1.23546e-07  1.11514e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to  512.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.82905     ( -0.325383   0.444054 )
Norm@50keV  : 1.503727E-04    ( -5.123829E-05   4.796537E-05) )
------------------------------------------------------------
 Chi-Squared =      63.24257     using    59 PHA bins.
 Reduced chi-squared =      1.109519     for     57 degrees of freedom
 Null hypothesis probability = 0.265
 
Photon flux (15-150 keV)    in 512.0 sec: 3.652554E-02 ( -0.00586402  0.00589261 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.49516e-07 ( -1.74177e-07  1.89911e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  512.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.916320     (     )
Epeak [keV] : 21.8616      ( -2.84668 3.17656 )
Norm@50keV  : 7.363704E-02    (     )
------------------------------------------------------------
 Chi-Squared =      54.64339     using    59 PHA bins.
 Reduced chi-squared =     0.9757748     for     56 degrees of freedom
 Null hypothesis probability = 0.526
 
Photon flux (15-150 keV)    in 512.0 sec: 3.544348E-02 ( -0.00551173  0.00560382 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11916e-07 ( -1.24022e-07  1.45664e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  512.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.33131   ( -0.540308   0.644845 )
beta        : -9.36474    ( -0.635262   6.34118 )
Epeak [keV] : 13.1171      ( -10.0653 3.20692 )
Norm@50keV   : 1.737645E-03    ( -0.269598   29.0092 )
------------------------------------------------------------
 Chi-Squared =      57.29034     using    59 PHA bins.
 Reduced chi-squared =      1.041643     for     55 degrees of freedom
 Null hypothesis probability = 0.390
 
Photon flux (15-150 keV)    in 512.0 sec: 3.637007E-02 ( -0.00552649  0.00553455 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.13037e-07 ( -1.23546e-07  1.11514e-07 ) ergs/cm2
 
Plot creation:
Sun Jan  4 16:35:41 EST 2009