batgrbproduct Analysis for Trigger=210254

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 12:52:55 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger210254/SDC
======================================================================

  Trigger: 00210254      Segment: 000

  BAT Trigger Time: 169454616   [s; MET]
      Trigger Stop: 169454680   [s; MET]
               UTC: 2006-05-16T06:43:34.803820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 71.1776265196255   Dec: -18.1132631831351  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.43
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.43

  Flight Position:   [ source = BAT ]
    RA: 71.1776265196255   Dec: -18.1132631831351  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 71.1653302871395   Dec: -18.1261068274905  [deg; J2000]  
        { 04h 44m 39.7s , -18d 07' 34.0" }
         +/- 2.56676002667612 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.48668903424932 [arcmin] (formal 1-sigma fit error)
    SNR: 7.91192722630092
    RA  =   4h 44m 39.7s  (71.165330 deg.)
    Dec = -18d  7' 34" (-18.126107 deg.)
 
  Angular difference between Flight and Ground position is 1.041881 arcmin
 
  Partial Coding Fraction: 0.796875    [ including projection effects ]

  Duration
     T90: 161.560000032187 +/- 23.3989422757554
        Measured from: -35.0360000133514
                   to: 126.524000018835     [s; relative to TRIGTIME]
     T50: 88.0480000078678 +/- 28.9503349860445
        Measured from: 3.01199999451637
                   to: 91.0600000023842     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 128.560000002384     
                   to: 129.560000002384     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -43.3160000145435     
                   to: 133.972000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.801745   0.740355   0.325254   0.126890
           0.079422   0.081100   0.075065   0.075732 [error]
 Peak      0.012440   0.017139   0.010664   0.016941
           0.008950   0.008908   0.008455   0.009277 [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 2.65e-07 3.21e-07 2.82e-07 4.25e-07 1.02e-06 1.29e-06   erg/cm2
              Error 4.31e-08 4.12e-08 6.97e-08 2.04e-07 1.58e-07 2.89e-07   erg/cm2
Peak flux Power-law 1.30e-01 1.09e-01 6.19e-02 5.21e-02 3.24e-01 3.53e-01   ph/cm2/s
              Error 1.31e-01 9.17e-02 6.38e-02 1.24e-01 2.22e-01 2.47e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.61e-07 3.34e-07 2.69e-07 2.07e-07 9.73e-07 1.07e-06   erg/cm2
              Error 4.51e-08 5.37e-08 6.94e-08 3.20e-07 1.92e-07 3.97e-07   erg/cm2
Peak flux Cutoff-PL 9.75e-02 1.55e-01 4.52e-02 1.02e-03 2.99e-01 2.99e-01   ph/cm2/s
              Error 1.24e-01 1.05e-01 6.63e-02 9.52e-02 2.07e-01 1.65e-01   ph/cm2/s
 
Fluence        Band 2.64e-07 3.32e-07 2.60e-07 3.34e-07 9.84e-07 1.19e-06   erg/cm2
              Error 4.86e-08 5.06e-08 6.06e-08 2.60e-07 1.66e-07 2.46e-07   erg/cm2
Peak flux      Band 9.74e-02 1.51e-01 5.27e-02 1.78e-03 3.00e-01 3.25e-01   ph/cm2/s
              Error 1.25e-01 5.84e-02 2.83e-02 2.10e-01 2.42e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.188    0.254    -      -           6.11e-04 1.09e-04   51.535 57
CPL   2.189    0.255    9998.9    0.5      6.11e-04 1.09e-04   51.537 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.809    1.467    -      -           2.35e-03 2.09e-03   71.220 57
CPL  -0.131    0.000      42.5   36.4      3.56e-02 1.16e+01   70.500 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  177.288  -43.316  133.972
T90   161.560  -35.036  126.524
T50    88.048    3.012   91.060
Peak    1.000  128.560  129.560

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   71.1653 -18.1261 0.0243   29.6 -150.7       1.3397     7.9  TRIG_00210254       
------------------------------------------
 
Foreground time interval of the image:
-43.316  89.605 (delta_t = 132.921 [sec])
Background time interval of the image:
-239.000 -43.316 (delta_t = 195.684 [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  -43.316 sec. to  133.972 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.18818     ( -0.244377   0.263290 )
Norm@50keV  : 6.113365E-04    ( -1.102090E-04   1.078039E-04) )
------------------------------------------------------------
 Chi-Squared =      51.53532     using    59 PHA bins.
 Reduced chi-squared =     0.9041284     for     57 degrees of freedom
 Null hypothesis probability = 0.679
 
Photon flux (15-150 keV)    in 177.3 sec: 0.100584 ( -0.012169  0.01217 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.01745e-06 ( -1.5465e-07  1.60595e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -43.316 sec. to  133.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.18881     ( -0.245342   0.264175 )
Epeak [keV] : 9998.92      ( 0.00000 1.07910 )
Norm@50keV  : 6.108069E-04    ( -1.106467E-04   1.083335E-04) )
------------------------------------------------------------
 Chi-Squared =      51.53696     using    59 PHA bins.
 Reduced chi-squared =     0.9203028     for     56 degrees of freedom
 Null hypothesis probability = 0.644
 
Photon flux (15-150 keV)    in 177.3 sec: 9.934655E-02 ( -0.0126585  0.0124874 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.73123e-07 ( -1.9072e-07  1.92461e-07 ) ergs/cm2
 
Band function
Time interval is from  -43.316 sec. to  133.972 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.39155   ( -14.9581   4.189157E-02) )
beta        : -6.39172    ( -7.71661   12.2770 )
Epeak [keV] : 40.8391      ( -17.9043 23.5393 )
Norm@50keV   : 1.504901E-03    ( -455.827   1.037419E+06) )
------------------------------------------------------------
 Chi-Squared =      53.44747     using    59 PHA bins.
 Reduced chi-squared =     0.9717721     for     55 degrees of freedom
 Null hypothesis probability = 0.534
 
Photon flux (15-150 keV)    in 177.3 sec: 9.934194E-02 ( -0.012646  0.0126451 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.83953e-07 ( -1.66428e-07  1.66469e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  128.560 sec. to  129.560 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.80947     ( -1.31468   1.61884 )
Norm@50keV  : 2.354648E-03    ( -2.354648E-03   1.823659E-03) )
------------------------------------------------------------
 Chi-Squared =      71.22027     using    59 PHA bins.
 Reduced chi-squared =      1.249478     for     57 degrees of freedom
 Null hypothesis probability = 9.746E-02
 
Photon flux (15-150 keV)    in 1.000 sec: 0.323991 ( -0.221875  0.221956 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.14596e-08 ( -1.58475e-08  1.87432e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  128.560 sec. to  129.560 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.130705     (     )
Epeak [keV] : 42.4848      ( -39.4411 33.3705 )
Norm@50keV  : 3.560048E-02    ( -1.53052   21.7364 )
------------------------------------------------------------
 Chi-Squared =      70.50040     using    59 PHA bins.
 Reduced chi-squared =      1.258936     for     56 degrees of freedom
 Null hypothesis probability = 9.195E-02
 
Photon flux (15-150 keV)    in 1.000 sec: 0.298846 ( -0.193489  0.22 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66264e-08 ( -1.10452e-08  2.03003e-08 ) ergs/cm2
 
Band function
Time interval is from  128.560 sec. to  129.560 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.02599   ( -14.8863   0.113748 )
beta        : -2.87339    ( -7.32752   3.02834 )
Epeak [keV] : 70.7631      ( -29.7297 139.934 )
Norm@50keV   : 5.478429E-03    ( -39.9968   5.782010E+06) )
------------------------------------------------------------
 Chi-Squared =      71.02706     using    59 PHA bins.
 Reduced chi-squared =      1.291401     for     55 degrees of freedom
 Null hypothesis probability = 7.174E-02
 
Photon flux (15-150 keV)    in 1.000 sec: 0.299893 ( -0.192055  0.227105 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.70158e-08 ( -1.70158e-08  2.03846e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  1 13:13:59 EST 2008