batgrbproduct Analysis for Trigger=371210

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Oct  4 08:35:45 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger371210/SDC
======================================================================

  Trigger: 00371210      Segment: 000

  BAT Trigger Time: 276028321.664   [s; MET]
      Trigger Stop: 276028325.76   [s; MET]
               UTC: 2009-09-30T18:31:56.533180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 267.76722018192   Dec: -30.9787039687467  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.68
     Image Trigger?:     NO
     Rate S/N Ratio:     13.2664991614216  [ if not an image trigger ]
     Image S/N Ratio:    7.68

  Flight Position:   [ source = BAT ]
    RA: 267.76722018192   Dec: -30.9787039687467  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 267.787074566964   Dec: -30.9383300349867  [deg; J2000]  
        { 17h 51m 08.9s , -30d 56' 18.0" }
         +/- 2.49228643940593 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.26776035433486 [arcmin] (formal 1-sigma fit error)
    SNR: 8.25182242457739
 
  Angular difference between Flight and Ground position is 2.629025 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 8.82399994134903 +/- 2.26152245863188
        Measured from: -1.62399995326996
                   to: 7.19999998807907     [s; relative to TRIGTIME]
     T50: 4.24399995803833 +/- 1.81931417459747
        Measured from: 0.388000011444092
                   to: 4.63199996948242     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.40400004386902     
                   to: 4.40400004386902     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.90399998426437     
                   to: 8.02000004053116     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.227180   0.041799  -0.001514   0.012655
           0.020632   0.015882   0.013502   0.012047 [error]
 Peak      0.035189   0.007378  -0.000456   0.006530
           0.006649   0.005182   0.004310   0.003895 [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 6.73e-08 1.14e-08 9.10e-10 7.82e-11 7.97e-08 7.97e-08   erg/cm2
              Error 1.17e-08 6.48e-09 1.29e-09 2.40e-10 1.60e-08 1.60e-08   erg/cm2
Peak flux Power-law 3.35e-01 5.76e-02 4.69e-03 4.12e-04 3.98e-01 3.98e-01   ph/cm2/s
              Error 1.01e-01 4.42e-02 9.46e-03 2.02e-03 1.30e-01 1.30e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.73e-08 1.14e-08 9.08e-10 7.76e-11 7.96e-08 7.97e-08   erg/cm2
              Error 1.17e-08 6.48e-09 1.28e-09 2.38e-10 1.60e-08 1.60e-08   erg/cm2
Peak flux Cutoff-PL 3.40e-01 5.34e-02 2.11e-03 2.39e-05 3.96e-01 3.97e-01   ph/cm2/s
              Error 1.15e-01 5.38e-02 9.39e-03 1.98e-03 1.28e-01 9.67e-02   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    5.366    1.043    -      -           1.20e-04 1.17e-04   49.680 57
CPL   1.000    0.000      50.0    0.0      2.63e-03 0.00e+00  113.170 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.618    1.451    -      -           3.70e-04 5.71e-04   51.110 57
CPL   1.000    0.000      50.0    0.0      5.39e-03 0.00e+00   70.320 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    9.924   -1.904    8.020
T90     8.824   -1.624    7.200
T50     4.244    0.388    4.632
Peak    1.000    3.404    4.404

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  267.7871 -30.9383 0.0232    0.0   97.8       0.2511     8.3  TRIG_00371210       
------------------------------------------
 
Foreground time interval of the image:
 -1.904   8.020 (delta_t =   9.924 [sec])
Background time interval of the image:
-239.664  -1.904 (delta_t = 237.760 [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   -1.904 sec. to    8.020 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 5.36644     ( -0.682724   1.40384 )
Norm@50keV  : 1.20441E-04    ( -0.000119072   0.000115211 )
------------------------------------------------------------
# Chi-Squared =          49.68 using 59 PHA bins.
# Reduced chi-squared =         0.8716 for     57 degrees of freedom 
# Null hypothesis probability =   7.435360e-01
 
Photon flux (15-150 keV)    in 9.924 sec: 0.262252 ( -0.0469695  0.0468531 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.96792e-08 ( -1.5729e-08  1.61907e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.904 sec. to    8.020 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 2.63479E-03    (     )
------------------------------------------------------------
# Chi-Squared =         113.17 using 59 PHA bins.
# Reduced chi-squared =         2.0210 for     56 degrees of freedom 
# Null hypothesis probability =   9.566333e-06
 
Photon flux (15-150 keV)    in 9.924 sec: 0.261960 ( -0.046942  0.046821 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.96343e-08 ( -1.57323e-08  1.61944e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.904 sec. to    8.020 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.20465   ( 2.20465   2.20465 )
beta        : -5.64546    ( -1.52269   0.480715 )
Epeak [keV] : 4.03968      ( -4.03968 -4.03968 )
Norm@50keV   : 28.2739    ( -28.2739   190.413 )
------------------------------------------------------------
# Chi-Squared =          49.45 using 59 PHA bins.
# Reduced chi-squared =         0.8992 for     55 degrees of freedom 
# Null hypothesis probability =   6.856500e-01
 
Photon flux (15-150 keV)    in 9.924 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    3.404 sec. to    4.404 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.61757     ( -1.18678   1.71569 )
Norm@50keV  : 3.69563E-04    ( -0.000369563   0.000772189 )
------------------------------------------------------------
# Chi-Squared =          51.11 using 59 PHA bins.
# Reduced chi-squared =         0.8966 for     57 degrees of freedom 
# Null hypothesis probability =   6.946220e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.397822 ( -0.129355  0.129958 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31832e-08 ( -4.95005e-09  5.68839e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    3.404 sec. to    4.404 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 5.39054E-03    (     )
------------------------------------------------------------
# Chi-Squared =          70.32 using 59 PHA bins.
# Reduced chi-squared =          1.256 for     56 degrees of freedom 
# Null hypothesis probability =   9.436110e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.395998 ( -0.127383  0.12944 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31794e-08 ( -4.95115e-09  5.6886e-09 ) ergs/cm2
 
Band function
Time interval is from    3.404 sec. to    4.404 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.37892   ( 2.37892   2.37892 )
beta        : -4.61756    ( -1.71549   1.1871 )
Epeak [keV] : 1.95958      ( -1.95958 -1.95958 )
Norm@50keV   : 3.62926    ( -3.62926   161.593 )
------------------------------------------------------------
# Chi-Squared =          51.11 using 59 PHA bins.
# Reduced chi-squared =         0.9292 for     55 degrees of freedom 
# Null hypothesis probability =   6.240646e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Sun Oct  4 09:09:18 EDT 2009