batgrbproduct Analysis for Trigger=153461

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  8 19:12:48 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger153461/SDC
======================================================================

  Trigger: 00153461      Segment: 000

  BAT Trigger Time: 147474712   [s; MET]
      Trigger Stop: 147474824   [s; MET]
               UTC: 2005-09-03T21:11:52.290340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 84.9235186879816   Dec: 20.6606618937871  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    13.09
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    13.09

  Flight Position:   [ source = BAT ]
    RA: 84.9235186879816   Dec: 20.6606618937871  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 84.9751416093699   Dec: 20.6461379366199  [deg; J2000]  
        { 05h 39m 54.0s , +20d 38' 46.1" }
         +/- 1.72162505766376 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.966870428107381 [arcmin] (formal 1-sigma fit error)
    SNR: 13.9979124466958
    RA  =   5h 39m 54.0s  (84.975142 deg.)
    Dec =  20d 38' 46" (20.646138 deg.)
 
  Angular difference between Flight and Ground position is 3.026484 arcmin
 
  Partial Coding Fraction: 0.8984375    [ including projection effects ]

  Duration
     T90: 112 +/- 35.7770876399966
        Measured from: 0
                   to: 112     [s; relative to TRIGTIME]
     T50: 112 +/- 16
        Measured from: 0
                   to: 112     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 112 second)
        Measured from: 0     
                   to: 112     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 112     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.310616   0.232471   0.058602   0.030307
           0.056601   0.056716   0.050465   0.049262 [error]
 Peak      0.310616   0.232471   0.058602   0.030307
           0.056601   0.056716   0.050465   0.049262 [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 8.91e-08 8.95e-08 6.31e-08 7.07e-08 2.69e-07 3.12e-07   erg/cm2
              Error 2.53e-08 2.82e-08 3.96e-08 9.64e-08 9.40e-08 1.48e-07   erg/cm2
Peak flux Power-law 2.62e-02 1.47e-02 5.17e-03 2.39e-03 4.73e-02 4.84e-02   ph/cm2/s
              Error 7.61e-03 4.43e-03 3.15e-03 3.06e-03 1.19e-02 1.25e-02   ph/cm2/s
 
Fluence   Cutoff-PL 9.38e-08 9.47e-08 1.32e-08 8.32e-11 2.02e-07 2.03e-07   erg/cm2
              Error 2.82e-08 3.90e-08 5.25e-08 9.09e-08 1.10e-07 1.67e-07   erg/cm2
Peak flux Cutoff-PL 2.70e-02 1.61e-02 1.25e-03 4.36e-06 4.44e-02 4.60e-02   ph/cm2/s
              Error 8.32e-03 6.19e-03 4.23e-03 2.90e-03 9.81e-03 1.61e-02   ph/cm2/s
 
Fluence        Band 2.36e-07 1.60e-07 6.66e-08 7.32e-08 2.79e-07 3.41e-07   erg/cm2
              Error 3.17e-08 7.83e-08 9.04e-08 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 2.73e-02 1.57e-02 3.43e-03 8.94e-04 4.69e-02 4.74e-02   ph/cm2/s
              Error 8.38e-03 5.18e-03 2.64e-03 2.20e-03 1.16e-02 1.17e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.504    0.595    -      -           2.40e-04 1.12e-04   74.422 57
CPL   1.490    0.000      14.4 5000.0      1.29e-03 0.00e+00   74.311 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.504    0.595    -      -           2.40e-04 1.12e-04   74.422 57
CPL   1.490    0.000      14.4 5000.0      1.29e-03 0.00e+00   74.311 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  112.000    0.000  112.000
T90   112.000    0.000  112.000
T50   112.000    0.000  112.000
Peak  112.000    0.000  112.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   84.9751 +20.6461 0.0137   14.2  -99.6       1.7125    14.0  TRIG_00153461       
------------------------------------------
 
Foreground time interval of the image:
  0.000 112.000 (delta_t = 112.000 [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  112.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.50366     ( -0.531453   0.658968 )
Norm@50keV  : 2.403404E-04    ( -1.098714E-04   1.137906E-04) )
------------------------------------------------------------
 Chi-Squared =      74.42169     using    59 PHA bins.
 Reduced chi-squared =      1.305644     for     57 degrees of freedom
 Null hypothesis probability = 6.045E-02
 
Photon flux (15-150 keV)    in 112.0 sec: 4.732000E-02 ( -0.0118558  0.0118946 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.69497e-07 ( -8.83366e-08  9.96811e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  112.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49042     (     )
Epeak [keV] : 14.3580      ( -23.3847 9976.61 )
Norm@50keV  : 1.288648E-03    (     )
------------------------------------------------------------
 Chi-Squared =      74.31121     using    59 PHA bins.
 Reduced chi-squared =      1.326986     for     56 degrees of freedom
 Null hypothesis probability = 5.128E-02
 
Photon flux (15-150 keV)    in 112.0 sec: 4.436023E-02 ( -0.00555136  0.0140643 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.0164e-07 ( -5.92077e-08  1.61301e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  112.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.48475   ( -8.51525   6.48475 )
beta        : -4.89180    ( -7.14341   12.8566 )
Epeak [keV] : 19.1144      ( -15.1777 58.3791 )
Norm@50keV   : 1.022812E-03    ( -2.37155   75.2363 )
------------------------------------------------------------
 Chi-Squared =      74.65979     using    59 PHA bins.
 Reduced chi-squared =      1.357451     for     55 degrees of freedom
 Null hypothesis probability = 4.002E-02
 
Photon flux (15-150 keV)    in 112.0 sec: 4.688993E-02 ( -0.0118347  0.0113536 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.78528e-07 ( -8.87398e-08  9.20181e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to  112.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.50366     ( -0.531453   0.658968 )
Norm@50keV  : 2.403404E-04    ( -1.098714E-04   1.137906E-04) )
------------------------------------------------------------
 Chi-Squared =      74.42169     using    59 PHA bins.
 Reduced chi-squared =      1.305644     for     57 degrees of freedom
 Null hypothesis probability = 6.045E-02
 
Photon flux (15-150 keV)    in 112.0 sec: 4.732000E-02 ( -0.0118558  0.0118946 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.69497e-07 ( -8.83366e-08  9.96811e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  112.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49042     (     )
Epeak [keV] : 14.3580      ( -23.3847 9976.61 )
Norm@50keV  : 1.288648E-03    (     )
------------------------------------------------------------
 Chi-Squared =      74.31121     using    59 PHA bins.
 Reduced chi-squared =      1.326986     for     56 degrees of freedom
 Null hypothesis probability = 5.128E-02
 
Photon flux (15-150 keV)    in 112.0 sec: 4.436023E-02 ( -0.00555136  0.0140643 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.0164e-07 ( -5.92077e-08  1.61301e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  112.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.48475   ( -8.51525   6.48475 )
beta        : -4.89180    ( -7.14341   12.8566 )
Epeak [keV] : 19.1144      ( -15.1777 58.3791 )
Norm@50keV   : 1.022812E-03    ( -2.37155   75.2363 )
------------------------------------------------------------
 Chi-Squared =      74.65979     using    59 PHA bins.
 Reduced chi-squared =      1.357451     for     55 degrees of freedom
 Null hypothesis probability = 4.002E-02
 
Photon flux (15-150 keV)    in 112.0 sec: 4.688993E-02 ( -0.0118347  0.0113536 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.78528e-07 ( -8.87398e-08  9.20181e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  8 19:29:11 EST 2008