batgrbproduct Analysis for Trigger=232585

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  2 08:06:59 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger232585/GCN5_download_cron
======================================================================

  Trigger: 00232585      Segment: 000

  BAT Trigger Time: 181845952   [s; MET]
      Trigger Stop: 181846016   [s; MET]
               UTC: 2006-10-06T16:45:50.510340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 111.090082281944   Dec: -79.2018093198341  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.5
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    12.5

  Flight Position:   [ source = BAT ]
    RA: 111.090082281944   Dec: -79.2018093198341  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 111.031568183955   Dec: -79.1961957593836  [deg; J2000]  
        { 07h 24m 07.6s , -79d 11' 46.3" }
         +/- 1.80046298901971 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.852724370234441 [arcmin] (formal 1-sigma fit error)
    SNR: 13.1305770060611
    RA  =   7h 24m  7.6s  (111.031568 deg.)
    Dec = -79d 11' 46" (-79.196196 deg.)
 
  Angular difference between Flight and Ground position is 0.739129 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 130.09999999404 +/- 30.2743297818761
        Measured from: -22.7199999988079
                   to: 107.379999995232     [s; relative to TRIGTIME]
     T50: 56.391999989748 +/- 20.9207786523386
        Measured from: -22.3039999902248
                   to: 34.0879999995232     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -23.1999999880791     
                   to: -22.1999999880791     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -23.2319999933243     
                   to: 137.724000006914     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.832520   0.903223   0.543412   0.179219
           0.068391   0.068984   0.061170   0.054126 [error]
 Peak      0.114840   0.213735   0.261775   0.087300
           0.006764   0.008187   0.009005   0.007364 [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 2.48e-07 3.94e-07 4.71e-07 1.10e-06 1.43e-06 2.22e-06   erg/cm2
              Error 3.63e-08 3.50e-08 6.14e-08 3.05e-07 1.42e-07 3.56e-07   erg/cm2
Peak flux Power-law 1.11e+00 1.58e+00 1.66e+00 3.21e+00 5.36e+00 7.56e+00   ph/cm2/s
              Error 1.01e-01 8.47e-02 7.00e-02 2.37e-01 2.22e-01 3.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.48e-07 3.94e-07 4.72e-07 1.09e-06 1.43e-06 2.08e-06   erg/cm2
              Error 3.64e-08 3.50e-08 6.15e-08 3.02e-07 1.42e-07 5.45e-07   erg/cm2
Peak flux Cutoff-PL 1.11e+00 1.58e+00 1.66e+00 3.19e+00 5.35e+00 7.54e+00   ph/cm2/s
              Error 1.01e-01 8.47e-02 7.01e-02 3.08e-01 2.22e-01 3.37e-01   ph/cm2/s
 
Fluence        Band 2.42e-07 3.99e-07 4.68e-07 1.05e-06 1.42e-06 2.14e-06   erg/cm2
              Error 3.35e-08 4.48e-08 4.80e-08 3.74e-07 1.30e-07 4.50e-07   erg/cm2
Peak flux      Band 1.08e+00 1.58e+00 1.68e+00 2.91e+00 5.34e+00 7.25e+00   ph/cm2/s
              Error 1.30e-01 8.70e-02 9.13e-02 6.34e-01 2.27e-01 6.66e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.741    0.166    -      -           9.63e-04 9.16e-05   49.547 57
CPL   1.529    0.000     106.1    0.0      1.24e-03 5.89e-04   49.992 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.929    0.074    -      -           4.66e-02 1.91e-03   43.954 57
CPL   0.821    0.233     665.7 5000.0      5.18e-02 1.13e-02   43.574  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: 46.784000 sec.
T50 in the 50-300 keV band: 27.584000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  160.956  -23.232  137.724
T90   130.100  -22.720  107.380
T50    56.392  -22.304   34.088
Peak    1.000  -23.200  -22.200

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  111.0316 -79.1962 0.0146   33.6  -20.2       1.3370    13.1  TRIG_00232585       
------------------------------------------
 
Foreground time interval of the image:
 -7.899  70.001 (delta_t =  77.900 [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  -23.232 sec. to  137.724 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.74101     ( -0.164284   0.167723 )
Norm@50keV  : 9.625164E-04    ( -9.228720E-05   9.101268E-05) )
------------------------------------------------------------
 Chi-Squared =      49.54667     using    59 PHA bins.
 Reduced chi-squared =     0.8692398     for     57 degrees of freedom
 Null hypothesis probability = 0.748
 
Photon flux (15-150 keV)    in 161.0 sec: 0.129720 ( -0.011664  0.011694 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43065e-06 ( -1.41686e-07  1.43224e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -23.232 sec. to  137.724 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52900     (     )
Epeak [keV] : 106.073      (   )
Norm@50keV  : 1.243467E-03    ( -1.470492E-04   1.031785E-03) )
------------------------------------------------------------
 Chi-Squared =      49.99211     using    59 PHA bins.
 Reduced chi-squared =     0.8927162     for     56 degrees of freedom
 Null hypothesis probability = 0.700
 
Photon flux (15-150 keV)    in 161.0 sec: 0.129673 ( -0.01166  0.01169 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43073e-06 ( -1.4172e-07  1.43267e-07 ) ergs/cm2
 
Band function
Time interval is from  -23.232 sec. to  137.724 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32851   ( -8.67149   3.64389 )
beta        : -1.74763    ( -8.25237   0.170571 )
Epeak [keV] : 37.4366      ( -37.3366 9962.56 )
Norm@50keV   : 2.015592E-03    ( -2.015592E-03   11.0915 )
------------------------------------------------------------
 Chi-Squared =      49.53576     using    59 PHA bins.
 Reduced chi-squared =     0.9006501     for     55 degrees of freedom
 Null hypothesis probability = 0.683
 
Photon flux (15-150 keV)    in 161.0 sec: 0.129732 ( -0.006267  0.011897 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42139e-06 ( -1.34955e-07  1.24749e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  -23.200 sec. to  -22.200 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.928995     ( -7.485068E-02   7.405853E-02) )
Norm@50keV  : 4.664062E-02    ( -1.911901E-03   1.905639E-03) )
------------------------------------------------------------
 Chi-Squared =      43.95355     using    59 PHA bins.
 Reduced chi-squared =     0.7711149     for     57 degrees of freedom
 Null hypothesis probability = 0.897
 
Photon flux (15-150 keV)    in 1.000 sec: 5.35565 ( -0.22141  0.22166 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.17647e-07 ( -2.2274e-08  2.2335e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -23.200 sec. to  -22.200 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.820705     ( -0.293556   0.171567 )
Epeak [keV] : 665.658      ( -665.648 9334.34 )
Norm@50keV  : 5.180958E-02    ( -6.129093E-03   1.639434E-02) )
------------------------------------------------------------
 Chi-Squared =      43.57422     using    59 PHA bins.
 but latest trial  4.658787E-02 gives Chi-Squared =  0.520744
 Reduced chi-squared =     0.7781110     for     56 degrees of freedom
 Null hypothesis probability = 0.887
 
Photon flux (15-150 keV)    in 1.000 sec: 5.35420 ( -0.22133  0.22173 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.16683e-07 ( -2.2281e-08  2.1976e-08 ) ergs/cm2
 
Band function
Time interval is from  -23.200 sec. to  -22.200 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.804678   ( -9.19532   5.77779 )
beta        : -0.928996    ( -7.405847E-02   7.485080E-02) )
Epeak [keV] : 39.8714      ( -9999.90 2.929688E-03) )
Norm@50keV   : 7.197384E-02    ( -1.918204E-03   1.912136E-03) )
------------------------------------------------------------
 Chi-Squared =      43.95354     using    59 PHA bins.
 Reduced chi-squared =     0.7991554     for     55 degrees of freedom
 Null hypothesis probability = 0.857
 
Photon flux (15-150 keV)    in 1.000 sec: 5.33548 ( -0.22754  0.22705 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.16343e-07 ( -2.2753e-08  2.2649e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  2 08:25:10 EST 2008