batgrbproduct Analysis for Trigger=212206

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 14:31:58 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger212206/GCN5_download_cron
======================================================================

  Trigger: 00212206      Segment: 000

  BAT Trigger Time: 170486664   [s; MET]
      Trigger Stop: 170486728   [s; MET]
               UTC: 2006-05-28T05:24:22.779820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 268.618732813048   Dec: 16.4164387697234  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.49
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.49

  Flight Position:   [ source = BAT ]
    RA: 268.618732813048   Dec: 16.4164387697234  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 268.573934058251   Dec: 16.4573115849564  [deg; J2000]  
        { 17h 54m 17.7s , +16d 27' 26.3" }
         +/- 4.29648776049114 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.74650749495531 [arcmin] (formal 1-sigma fit error)
    SNR: 3.79027228671002
    RA  =  17h 54m 17.7s  (268.573934 deg.)
    Dec =  16d 27' 26" (16.457312 deg.)
 
  Angular difference between Flight and Ground position is 3.558172 arcmin
 
  Partial Coding Fraction: 0.5859375    [ 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     0.040456   0.035364   0.033470   0.003211
           0.041416   0.036724   0.032447   0.029187 [error]
 Peak      0.040456   0.035364   0.033470   0.003211
           0.041416   0.036724   0.032447   0.029187 [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 1.98e-08 4.36e-10 2.41e-12 1.34e-14 2.02e-08 2.02e-08   erg/cm2
              Error 2.37e-08 9.10e-09 3.59e-09 2.02e-09 3.06e-08 3.08e-08   erg/cm2
Peak flux Power-law 2.21e-02 2.91e-04 8.04e-07 2.23e-09 2.24e-02 2.24e-02   ph/cm2/s
              Error 2.12e-02 5.28e-03 1.03e-03 2.53e-04 2.39e-02 2.34e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.97e-08 4.34e-10 2.39e-12 1.32e-14 2.02e-08 2.02e-08   erg/cm2
              Error 2.37e-08 9.10e-09 3.58e-09 2.00e-09 3.06e-08 3.08e-08   erg/cm2
Peak flux Cutoff-PL 2.22e-02 2.94e-04 7.81e-07 1.88e-09 2.25e-02 2.30e-02   ph/cm2/s
              Error 2.12e-02 5.28e-03 1.02e-03 2.48e-04 2.79e-02 2.50e-02   ph/cm2/s
 
Fluence        Band 2.09e-08 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 2.25e-02 3.17e-04 9.60e-07 2.89e-09 2.28e-02 2.33e-02   ph/cm2/s
              Error 2.19e-02 5.28e-03 8.85e-07 7.75e-07 2.38e-02 1.94e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    8.421    0.000    -      -           5.15e-07 5.97e-05   63.076 57
CPL   1.545    0.000       1.0   53.2      1.43e+00 1.82e+04   63.112  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    8.421    0.000    -      -           5.15e-07 5.97e-05   63.076 57
CPL   1.545    0.000       1.0   53.2      1.43e+00 1.82e+04   63.112  0
 
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
  268.5739 +16.4573 0.0505   38.7  -18.1       0.2854     3.8  TRIG_00212206       
------------------------------------------
 
Foreground time interval of the image:
  0.000  33.066 (delta_t =  33.066 [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   33.066 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 8.42094     (     )
Norm@50keV  : 5.145488E-07    ( -8.305565E-08   1.193337E-04) )
------------------------------------------------------------
 Chi-Squared =      63.07565     using    59 PHA bins.
 Reduced chi-squared =      1.106590     for     57 degrees of freedom
 Null hypothesis probability = 0.270
 
Photon flux (15-150 keV)    in 33.07 sec: 2.243829E-02 ( -0.0144034  0.033348 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.02077e-08 ( -2.02077e-08  4.09162e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.066 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54477     (     )
Epeak [keV] : 1.03562      ( -0.927261 105.534 )
Norm@50keV  : 1.43352    ( -3.12479   36489.1 )
------------------------------------------------------------
 Chi-Squared =      63.11209     using    59 PHA bins.
 but latest trial   186.297     gives Chi-Squared =   3.60772
 Reduced chi-squared =      1.127002     for     56 degrees of freedom
 Null hypothesis probability = 0.239
 
Photon flux (15-150 keV)    in 33.07 sec: 2.248929E-02 ( -0.0224893  0.0332519 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.01529e-08 ( -2.01529e-08  4.10243e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.066 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.03232   ( -0.967676   1.86432 )
beta        : -9.06836    ( -0.931636   17.9627 )
Epeak [keV] : 265.066      ( -264.966 9734.93 )
Norm@50keV   : 3.176682E-05    ( -3.176682E-05   1.622469E-02) )
------------------------------------------------------------
 Chi-Squared =      63.03114     using    59 PHA bins.
 Reduced chi-squared =      1.146021     for     55 degrees of freedom
 Null hypothesis probability = 0.214
 
Photon flux (15-150 keV)    in 33.07 sec: 2.283282E-02 ( -0.0146574  0.0329077 ) 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   33.066 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 8.42094     (     )
Norm@50keV  : 5.145488E-07    ( -8.305565E-08   1.193337E-04) )
------------------------------------------------------------
 Chi-Squared =      63.07565     using    59 PHA bins.
 Reduced chi-squared =      1.106590     for     57 degrees of freedom
 Null hypothesis probability = 0.270
 
Photon flux (15-150 keV)    in 33.07 sec: 2.243829E-02 ( -0.0144034  0.033348 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.02077e-08 ( -2.02077e-08  4.09162e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   33.066 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54477     (     )
Epeak [keV] : 1.03562      ( -0.927261 105.534 )
Norm@50keV  : 1.43352    ( -3.12479   36489.1 )
------------------------------------------------------------
 Chi-Squared =      63.11209     using    59 PHA bins.
 but latest trial   186.297     gives Chi-Squared =   3.60772
 Reduced chi-squared =      1.127002     for     56 degrees of freedom
 Null hypothesis probability = 0.239
 
Photon flux (15-150 keV)    in 33.07 sec: 2.248929E-02 ( -0.0224893  0.0332519 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.01529e-08 ( -2.01529e-08  4.10243e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   33.066 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.03232   ( -0.967676   1.86432 )
beta        : -9.06836    ( -0.931636   5.82229 )
Epeak [keV] : 265.066      ( -264.966 9734.93 )
Norm@50keV   : 3.176682E-05    ( -3.176682E-05   1.622469E-02) )
------------------------------------------------------------
 Chi-Squared =      63.03114     using    59 PHA bins.
 Reduced chi-squared =      1.146021     for     55 degrees of freedom
 Null hypothesis probability = 0.214
 
Photon flux (15-150 keV)    in 33.07 sec: 2.283282E-02 ( -0.0146574  0.0329077 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Tue Jan  1 14:39:22 EST 2008