batgrbproduct Analysis for Trigger=172969

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 19:59:08 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger172969/GCN5_download_cron
======================================================================

  Trigger: 00172969      Segment: 000

  BAT Trigger Time: 156424912   [s; MET]
      Trigger Stop: 156424976   [s; MET]
               UTC: 2005-12-16T11:21:52.100720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 358.776411329565   Dec: 28.6072602119427  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    33481
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    33481

  Flight Position:   [ source = BAT ]
    RA: 358.776411329565   Dec: 28.6072602119427  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 358.798332860005   Dec: 28.6073738380072  [deg; J2000]  
        { 23h 55m 11.6s , +28d 36' 26.5" }
         +/- 3.27153034770853 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.89282198522829 [arcmin] (formal 1-sigma fit error)
    SNR: 5.59448192797011
    RA  =  23h 55m 11.6s  (358.798333 deg.)
    Dec =  28d 36' 27" (28.607374 deg.)
 
  Angular difference between Flight and Ground position is 1.154744 arcmin
 
  Partial Coding Fraction: 0.796875    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.292169   0.162880   0.021777  -0.044089
           0.041811   0.042283   0.037624   0.035682 [error]
 Peak      0.292169   0.162880   0.021777  -0.044089
           0.041811   0.042283   0.037624   0.035682 [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 8.61e-08 7.18e-08 4.07e-08 3.42e-08 2.14e-07 2.32e-07   erg/cm2
              Error 2.15e-08 2.35e-08 2.79e-08 4.97e-08 6.83e-08 9.41e-08   erg/cm2
Peak flux Power-law 4.46e-02 2.09e-02 5.91e-03 2.10e-03 7.26e-02 7.35e-02   ph/cm2/s
              Error 1.14e-02 6.50e-03 3.92e-03 2.86e-03 1.65e-02 1.70e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.61e-08 7.18e-08 4.06e-08 3.38e-08 2.14e-07 2.32e-07   erg/cm2
              Error 2.15e-08 2.35e-08 2.79e-08 4.93e-08 6.82e-08 9.37e-08   erg/cm2
Peak flux Cutoff-PL 4.46e-02 2.09e-02 5.90e-03 2.08e-03 7.26e-02 7.34e-02   ph/cm2/s
              Error 1.14e-02 6.51e-03 3.92e-03 2.84e-03 1.65e-02 1.70e-02   ph/cm2/s
 
Fluence        Band 8.96e-08 7.06e-08 3.47e-08 2.42e-08 2.07e-07 2.24e-07   erg/cm2
              Error 2.37e-08 2.27e-08 1.83e-08 8.95e-09 5.07e-08 5.82e-08   erg/cm2
Peak flux      Band 4.46e-02 2.08e-02 5.86e-03 2.07e-03 7.26e-02 7.55e-02   ph/cm2/s
              Error 1.07e-02 5.15e-03 2.63e-03 1.35e-03 1.65e-02 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.819    0.630    -      -           3.00e-04 1.53e-04   46.808 57
CPL   1.754    0.000       6.6    0.0      1.73e-03 1.29e-03   47.352 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.819    0.630    -      -           3.00e-04 1.53e-04   46.808 57
CPL   1.754    0.000       6.6    0.0      1.73e-03 1.29e-03   47.352 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  358.7983 +28.6074 0.0342   28.1  168.2       0.4786     5.6  TRIG_00172969       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [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   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.81902     ( -0.553301   0.705809 )
Norm@50keV  : 3.000698E-04    ( -1.460669E-04   1.592841E-04) )
------------------------------------------------------------
 Chi-Squared =      46.80799     using    59 PHA bins.
 Reduced chi-squared =     0.8211928     for     57 degrees of freedom
 Null hypothesis probability = 0.830
 
Photon flux (15-150 keV)    in 64.00 sec: 7.258443E-02 ( -0.0164964  0.016552 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13579e-07 ( -6.4128e-08  7.24006e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75420     (     )
Epeak [keV] : 6.56461      (   )
Norm@50keV  : 1.729504E-03    ( -1.219315E-03   1.365414E-03) )
------------------------------------------------------------
 Chi-Squared =      47.35204     using    59 PHA bins.
 Reduced chi-squared =     0.8455721     for     56 degrees of freedom
 Null hypothesis probability = 0.788
 
Photon flux (15-150 keV)    in 64.00 sec: 7.255354E-02 ( -0.016491  0.0165464 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13585e-07 ( -6.41626e-08  7.23181e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.66522   ( -2.48725   12.5127 )
beta        : -8.26781    ( -0.706694   12.8189 )
Epeak [keV] : 9.50838      ( -9.40838 9990.49 )
Norm@50keV   : 1.750907E-03    ( -1.983528E-02   2.165350E-02) )
------------------------------------------------------------
 Chi-Squared =      47.52003     using    59 PHA bins.
 Reduced chi-squared =     0.8640006     for     55 degrees of freedom
 Null hypothesis probability = 0.753
 
Photon flux (15-150 keV)    in 64.00 sec: 7.256387E-02 ( -0.0164642  0.0165553 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.07052e-07 ( -5.24045e-08  4.90784e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.81902     ( -0.553301   0.705809 )
Norm@50keV  : 3.000698E-04    ( -1.460669E-04   1.592841E-04) )
------------------------------------------------------------
 Chi-Squared =      46.80799     using    59 PHA bins.
 Reduced chi-squared =     0.8211928     for     57 degrees of freedom
 Null hypothesis probability = 0.830
 
Photon flux (15-150 keV)    in 64.00 sec: 7.258443E-02 ( -0.0164964  0.016552 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13579e-07 ( -6.4128e-08  7.24006e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75420     (     )
Epeak [keV] : 6.56461      (   )
Norm@50keV  : 1.729504E-03    ( -1.220949E-03   1.355540E-03) )
------------------------------------------------------------
 Chi-Squared =      47.35204     using    59 PHA bins.
 Reduced chi-squared =     0.8455721     for     56 degrees of freedom
 Null hypothesis probability = 0.788
 
Photon flux (15-150 keV)    in 64.00 sec: 7.255354E-02 ( -0.016491  0.0165464 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13585e-07 ( -6.41626e-08  7.23181e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.66522   ( -2.48725   12.5127 )
beta        : -8.26781    ( -0.706694   12.8189 )
Epeak [keV] : 9.50838      ( -9.40838 9990.49 )
Norm@50keV   : 1.750907E-03    ( -1.983528E-02   2.165350E-02) )
------------------------------------------------------------
 Chi-Squared =      47.52003     using    59 PHA bins.
 Reduced chi-squared =     0.8640006     for     55 degrees of freedom
 Null hypothesis probability = 0.753
 
Photon flux (15-150 keV)    in 64.00 sec: 7.256387E-02 ( -0.0164642  0.0165553 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.07052e-07 ( -5.24045e-08  4.90784e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  9 20:10:49 EST 2008