batgrbproduct Analysis for Trigger=239987

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  2 13:14:23 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger239987/GCN5_download_cron
======================================================================

  Trigger: 00239987      Segment: 000

  BAT Trigger Time: 185878698.56   [s; MET]
      Trigger Stop: 185878699.584   [s; MET]
               UTC: 2006-11-22T08:58:16.973240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 189.10936752306   Dec: -12.2345009942656  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.61
     Image Trigger?:     NO
     Rate S/N Ratio:     15.4919333848297  [ if not an image trigger ]
     Image S/N Ratio:    6.61

  Flight Position:   [ source = BAT ]
    RA: 189.10936752306   Dec: -12.2345009942656  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 189.002948236211   Dec: -12.2468792992675  [deg; J2000]  
        { 12h 36m 00.7s , -12d 14' 48.8" }
         +/- 4.25298667727842 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.4248152715699 [arcmin] (formal 1-sigma fit error)
    SNR: 3.84577668737004
    RA  =  12h 36m  0.7s  (189.002948 deg.)
    Dec = -12d 14' 49" (-12.246879 deg.)
 
  Angular difference between Flight and Ground position is 6.284038 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     T50: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1.02399998903275 second)
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.001055   0.004454   0.011450   0.021133
           0.005287   0.005619   0.005275   0.005888 [error]
 Peak      0.001055   0.004454   0.011450   0.021133
           0.005287   0.005619   0.005275   0.005888 [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 2.16e-10 1.40e-09 2.37e-09 3.86e-07 1.29e-08 1.98e-07   erg/cm2
              Error 8.49e-10 6.49e-09 3.35e-07 1.97e-08 3.28e-07 0.00e+00   erg/cm2
Peak flux Power-law 6.61e-03 2.26e-02 1.80e-02 8.81e-01 6.97e-02 6.41e-01   ph/cm2/s
              Error 2.64e-02 5.29e-02 7.78e-01 1.45e-01 7.26e-01 0.00e+00   ph/cm2/s
 
Fluence   Cutoff-PL 5.74e-12 1.14e-10 2.10e-09 4.26e-07 1.22e-08 2.20e-07   erg/cm2
              Error 7.51e-10 2.18e-09 6.47e-09 3.74e-07 1.72e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 3.06e-04 1.69e-03 1.59e-02 9.61e-01 6.52e-02 6.37e-01   ph/cm2/s
              Error 3.64e-02 5.28e-02 8.59e-01 1.44e-01 0.00e+00 0.00e+00   ph/cm2/s
 
Fluence        Band 2.18e-10 1.42e-09 2.15e-09 4.27e-07 1.24e-08 1.27e-07   erg/cm2
              Error 8.40e-10 6.51e-09 1.03e-06 1.97e-08 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 2.29e-06 9.01e-05 3.15e-03 1.87e+00 2.43e-02 6.34e-01   ph/cm2/s
              Error 2.09e-02 3.40e-02 5.24e-02 1.50e+00 1.36e-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   -0.523    0.000    -      -           1.03e-03 1.22e-03   49.575 57
CPL  -0.505    0.000    9999.4 5000.0      1.07e-03 1.22e-03   49.586 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.523    0.000    -      -           1.03e-03 1.22e-03   49.575 57
CPL  -0.505    0.000    9999.4 5000.0      1.07e-03 1.22e-03   49.586 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    1.024    0.000    1.024
T90     1.024    0.000    1.024
T50     1.024    0.000    1.024
Peak    1.024    0.000    1.024

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  189.0029 -12.2469 0.0499   18.2 -167.7       0.0452     3.8  TRIG_00239987       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.024 (delta_t =   1.024 [sec])
Background time interval of the image:
-38.459 -10.560 (delta_t =  27.899 [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    0.000 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.522592     (     )
Norm@50keV  : 1.033380E-03    ( -9.812553E-05   2.342435E-03) )
------------------------------------------------------------
 Chi-Squared =      49.57515     using    59 PHA bins.
 Reduced chi-squared =     0.8697394     for     57 degrees of freedom
 Null hypothesis probability = 0.747
 
Photon flux (15-150 keV)    in 1.024 sec: 6.971191E-02 ( -0.0697119  0.220016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.29055e-08 ( -1.29055e-08  2.65431e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.505451     (     )
Epeak [keV] : 9999.35      ( -9999.34 0.650391 )
Norm@50keV  : 1.070406E-03    ( -1.003014E-04   2.346201E-03) )
------------------------------------------------------------
 Chi-Squared =      49.58578     using    59 PHA bins.
 Reduced chi-squared =     0.8854604     for     56 degrees of freedom
 Null hypothesis probability = 0.715
 
Photon flux (15-150 keV)    in 1.024 sec: 6.518904E-02 ( -0.065189  0.223266 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22444e-08 ( -7.34339e-09  2.71315e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.238056   ( -10.2381   4.76194 )
beta        : 0.451644    ( -1.48664   9.54836 )
Epeak [keV] : 19.1167      ( -19.0167 9980.88 )
Norm@50keV   : 1.908265E-03    ( -1.908265E-03   69861.2 )
------------------------------------------------------------
 Chi-Squared =      49.57703     using    59 PHA bins.
 Reduced chi-squared =     0.9014006     for     55 degrees of freedom
 Null hypothesis probability = 0.681
 
Photon flux (15-150 keV)    in 1.024 sec: 2.432879E-02 ( -0.0199256  0.252581 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2419e-08 ( -1.2419e-08  2.69007e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.522592     (     )
Norm@50keV  : 1.033380E-03    ( -9.812553E-05   2.342435E-03) )
------------------------------------------------------------
 Chi-Squared =      49.57515     using    59 PHA bins.
 Reduced chi-squared =     0.8697394     for     57 degrees of freedom
 Null hypothesis probability = 0.747
 
Photon flux (15-150 keV)    in 1.024 sec: 6.971191E-02 ( -0.0697119  0.220016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.29055e-08 ( -1.29055e-08  2.65431e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.505451     (     )
Epeak [keV] : 9999.35      ( -9999.34 0.650391 )
Norm@50keV  : 1.070406E-03    ( -1.003014E-04   2.346201E-03) )
------------------------------------------------------------
 Chi-Squared =      49.58578     using    59 PHA bins.
 Reduced chi-squared =     0.8854604     for     56 degrees of freedom
 Null hypothesis probability = 0.715
 
Photon flux (15-150 keV)    in 1.024 sec: 6.518904E-02 ( -0.065189  0.223266 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22444e-08 ( -7.34339e-09  2.71315e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.238056   ( -10.2381   4.76194 )
beta        : 0.451644    ( -1.48664   9.54836 )
Epeak [keV] : 19.1167      ( -19.0167 9980.88 )
Norm@50keV   : 1.908265E-03    ( -1.908265E-03   69861.2 )
------------------------------------------------------------
 Chi-Squared =      49.57703     using    59 PHA bins.
 Reduced chi-squared =     0.9014006     for     55 degrees of freedom
 Null hypothesis probability = 0.681
 
Photon flux (15-150 keV)    in 1.024 sec: 2.432879E-02 ( -0.0199256  0.252581 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2419e-08 ( -1.2419e-08  2.69007e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  2 13:31:00 EST 2008