batgrbproduct Analysis for Trigger=158593

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 15:17:53 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger158593/SDC
======================================================================

  Trigger: 00158593      Segment: 000

  BAT Trigger Time: 150323433.024   [s; MET]
      Trigger Stop: 150323437.12   [s; MET]
               UTC: 2005-10-06T20:30:33.255560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 110.830064621421   Dec: 9.53064743051798  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.25
     Image Trigger?:     NO
     Rate S/N Ratio:     17.1464281994822  [ if not an image trigger ]
     Image S/N Ratio:    7.25

  Flight Position:   [ source = BAT ]
    RA: 110.830064621421   Dec: 9.53064743051798  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 110.794598750862   Dec: 9.49998650370074  [deg; J2000]  
        { 07h 23m 10.7s , +09d 30' 00.0" }
         +/- 2.03573506144558 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.14448575870663 [arcmin] (formal 1-sigma fit error)
    SNR: 11.0176256850275
    RA  =   7h 23m 10.7s  (110.794599 deg.)
    Dec =   9d 29' 60" (9.499987 deg.)
 
  Angular difference between Flight and Ground position is 2.790836 arcmin
 
  Partial Coding Fraction: 0.2167969    [ including projection effects ]

  Duration
     T90: 140 +/- 50.3115294937453
        Measured from: -116.023999989033
                   to: 23.9760000109673     [s; relative to TRIGTIME]
     T50: 23 +/- 38.8329756778952
        Measured from: -15.0239999890327
                   to: 7.97600001096725     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.97600001096725     
                   to: 3.97600001096725     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -128.023999989033     
                   to: 31.9760000109673     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.678582   1.076783   0.741642   0.310476
           0.130076   0.131670   0.111413   0.095643 [error]
 Peak      0.038396   0.062778   0.055729   0.014941
           0.010925   0.011663   0.010309   0.008300 [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 2.36e-07 4.32e-07 6.10e-07 1.80e-06 1.75e-06 3.09e-06   erg/cm2
              Error 6.01e-08 6.62e-08 1.12e-07 7.30e-07 2.71e-07 8.07e-07   erg/cm2
Peak flux Power-law 3.89e-01 4.67e-01 4.05e-01 6.01e-01 1.47e+00 1.86e+00   ph/cm2/s
              Error 1.40e-01 1.04e-01 8.00e-02 2.49e-01 2.84e-01 3.44e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.36e-07 4.33e-07 6.10e-07 1.79e-06 1.75e-06 2.93e-06   erg/cm2
              Error 6.01e-08 6.63e-08 1.12e-07 7.25e-07 2.71e-07 8.47e-07   erg/cm2
Peak flux Cutoff-PL 3.36e-01 4.93e-01 4.39e-01 3.19e-01 1.44e+00 1.59e+00   ph/cm2/s
              Error 1.65e-01 1.22e-01 1.01e-01 4.11e-01 2.88e-01 4.60e-01   ph/cm2/s
 
Fluence        Band 2.27e-07 4.28e-07 6.17e-07 1.89e-06 1.75e-06 3.18e-06   erg/cm2
              Error 4.18e-08 6.03e-08 9.36e-08 5.37e-07 2.67e-07 4.49e-07   erg/cm2
Peak flux      Band 3.27e-01 5.07e-01 4.13e-01 5.01e-01 1.45e+00 1.70e+00   ph/cm2/s
              Error 1.42e-01 1.40e-01 9.88e-02 4.14e-01 2.86e-01 4.47e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.504    0.255    -      -           1.15e-03 1.65e-04   69.618 57
CPL   1.365    0.970     224.5    0.0      1.36e-03 1.22e-03   69.829  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.205    0.308    -      -           1.25e-02 2.29e-03   51.516 57
CPL   0.523    1.274     118.2 5000.0      2.64e-02 6.61e-02   50.631  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: 12.352000 sec.
T50 in the 50-300 keV band: 4.928000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  160.000 -128.024   31.976
T90   140.000 -116.024   23.976
T50    23.000  -15.024    7.976
Peak    1.000    2.976    3.976

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  110.7946  +9.5000 0.0176   35.8  120.7       3.6586    11.0  TRIG_00158593       
------------------------------------------
 
Foreground time interval of the image:
-128.024  31.976 (delta_t = 160.000 [sec])
Background time interval of the image:
-299.024 -128.024 (delta_t = 171.000 [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 -128.024 sec. to   31.976 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50436     ( -0.255851   0.254558 )
Norm@50keV  : 1.150528E-03    ( -1.654188E-04   1.644536E-04) )
------------------------------------------------------------
 Chi-Squared =      69.61772     using    59 PHA bins.
 Reduced chi-squared =      1.221364     for     57 degrees of freedom
 Null hypothesis probability = 0.122
 
Photon flux (15-150 keV)    in 160.0 sec: 0.143801 ( -0.02125  0.02133 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74504e-06 ( -2.70109e-07  2.72512e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from -128.024 sec. to   31.976 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36471     ( -0.777848   1.16282 )
Epeak [keV] : 224.466      (   )
Norm@50keV  : 1.359136E-03    ( -1.151779E-03   1.278545E-03) )
------------------------------------------------------------
 Chi-Squared =      69.82888     using    59 PHA bins.
 but latest trial   2.52753     gives Chi-Squared =   2.46606
 but latest trial  3.417896E-03 gives Chi-Squared =   512.208
 Reduced chi-squared =      1.246944     for     56 degrees of freedom
 Null hypothesis probability = 0.101
 
Photon flux (15-150 keV)    in 160.0 sec: 0.143758 ( -0.021243  0.021323 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7453e-06 ( -2.70192e-07  2.7264e-07 ) ergs/cm2
 
Band function
Time interval is from -128.024 sec. to   31.976 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.01624   ( -8.98376   6.01624 )
beta        : -1.54962    ( -8.45038   0.289603 )
Epeak [keV] : 64.1298      ( -64.0298 559.468 )
Norm@50keV   : 2.416126E-03    ( -6.492514E-02   41.0614 )
------------------------------------------------------------
 Chi-Squared =      69.37823     using    59 PHA bins.
 Reduced chi-squared =      1.261422     for     55 degrees of freedom
 Null hypothesis probability = 9.188E-02
 
Photon flux (15-150 keV)    in 160.0 sec: 0.143693 ( -0.021089  0.020882 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.75112e-06 ( -2.68963e-07  2.65664e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    2.976 sec. to    3.976 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20501     ( -0.316154   0.300391 )
Norm@50keV  : 1.253505E-02    ( -2.291912E-03   2.284299E-03) )
------------------------------------------------------------
 Chi-Squared =      51.51572     using    59 PHA bins.
 Reduced chi-squared =     0.9037845     for     57 degrees of freedom
 Null hypothesis probability = 0.680
 
Photon flux (15-150 keV)    in 1.000 sec: 1.47238 ( -0.28292  0.28486 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27029e-07 ( -2.4163e-08  2.4301e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.976 sec. to    3.976 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.523483     ( -1.62192   0.925752 )
Epeak [keV] : 118.156      ( -118.146 9881.84 )
Norm@50keV  : 2.635333E-02    ( -1.709995E-02   0.115165 )
------------------------------------------------------------
 Chi-Squared =      50.63108     using    59 PHA bins.
 but latest trial  9.486465E-03 gives Chi-Squared =   5.81004
 Reduced chi-squared =     0.9041265     for     56 degrees of freedom
 Null hypothesis probability = 0.678
 
Photon flux (15-150 keV)    in 1.000 sec: 1.44439 ( -0.28749  0.28861 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23427e-07 ( -2.5976e-08  2.5529e-08 ) ergs/cm2
 
Band function
Time interval is from    2.976 sec. to    3.976 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.169497   ( -9.83050   4.71738 )
beta        : -1.60004    ( -8.39996   0.646830 )
Epeak [keV] : 85.7021      ( -85.6021 913.595 )
Norm@50keV   : 4.188702E-02    ( -112.971   28.0315 )
------------------------------------------------------------
 Chi-Squared =      50.46436     using    59 PHA bins.
 Reduced chi-squared =     0.9175338     for     55 degrees of freedom
 Null hypothesis probability = 0.648
 
Photon flux (15-150 keV)    in 1.000 sec: 1.44663 ( -0.28142  0.29071 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.25801e-07 ( -2.5364e-08  2.2431e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  9 15:28:34 EST 2008