batgrbproduct Analysis for Trigger=335105

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.42
    Process Start Time (local time): Sun Nov 23 08:50:53 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger335105/SDC
======================================================================

  Trigger: 00335105      Segment: 000

  BAT Trigger Time: 248992536.128   [s; MET]
      Trigger Stop: 248992540.224   [s; MET]
               UTC: 2008-11-21T20:35:32.854060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 89.2636966592357   Dec: -60.6257043407029  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.79
     Image Trigger?:     NO
     Rate S/N Ratio:     39.319206502675  [ if not an image trigger ]
     Image S/N Ratio:    9.79

  Flight Position:   [ source = BAT ]
    RA: 89.2636966592357   Dec: -60.6257043407029  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 89.2736111961864   Dec: -60.6113415653543  [deg; J2000]  
        { 05h 57m 05.7s , -60d 36' 40.8" }
         +/- 1.35992790816879 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.557633645797289 [arcmin] (formal 1-sigma fit error)
    SNR: 19.6056569568394
 
  Angular difference between Flight and Ground position is 0.909847 arcmin
 
  Partial Coding Fraction: 0.05078125    [ including projection effects ]

  Duration
     T90: 17.5039999485016 +/- 1.99410331775215
        Measured from: -3.41599997878075
                   to: 14.0879999697208     [s; relative to TRIGTIME]
     T50: 8.87999996542931 +/- 1.57752210275851
        Measured from: 0.664000004529953
                   to: 9.54399996995926     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 13.6040000021458     
                   to: 14.6040000021458     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.30399999022484     
                   to: 14.4560000002384     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.964730   1.964649   2.373657   0.893986
           0.128805   0.136409   0.134079   0.107524 [error]
 Peak      0.083572   0.149302   0.183024   0.084428
           0.025815   0.029614   0.031154   0.023414 [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 4.65e-07 1.03e-06 1.81e-06 7.42e-06 4.96e-06 1.02e-05   erg/cm2
              Error 6.45e-08 8.77e-08 1.25e-07 1.13e-06 3.29e-07 0.00e+00   erg/cm2
Peak flux Power-law 1.68e+00 1.46e+00 8.69e-01 7.76e-01 4.35e+00 4.79e+00   ph/cm2/s
              Error 6.51e-01 3.87e-01 2.50e-01 4.09e-01 1.14e+00 1.19e+00   ph/cm2/s
 
Fluence   Cutoff-PL 3.89e-07 1.06e-06 1.97e-06 3.96e-06 4.91e-06 6.84e-06   erg/cm2
              Error 8.20e-08 9.57e-08 1.69e-07 1.85e-06 3.36e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 6.69e-01 1.96e+00 1.37e+00 1.15e-01 4.11e+00 4.11e+00   ph/cm2/s
              Error 4.09e-01 5.09e-01 3.60e-01 1.19e-01 9.79e-01 9.82e-01   ph/cm2/s
 
Fluence        Band 3.86e-07 1.06e-06 1.96e-06 3.96e-06 4.90e-06 7.14e-06   erg/cm2
              Error 8.13e-08 9.55e-08 1.69e-07 1.85e-06 3.36e-07 0.00e+00   erg/cm2
Peak flux      Band 9.21e-01 1.97e+00 1.36e+00 1.83e-01 4.19e+00 4.33e+00   ph/cm2/s
              Error 5.70e-01 5.65e-01 3.75e-01 2.09e-01 1.01e+00 1.19e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.192    0.111    -      -           2.47e-02 1.68e-03   61.096 57
CPL   0.563    0.500     140.3  126.8      4.52e-02 2.23e-02   55.786 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.750    0.361    -      -           3.21e-02 8.03e-03   82.316 57
CPL  -2.441    0.000      56.8    8.0      3.10e+00 3.55e+00   73.020 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: 16.832000 sec.
T50 in the 50-300 keV band: 9.280000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   19.760   -5.304   14.456
T90    17.504   -3.416   14.088
T50     8.880    0.664    9.544
Peak    1.000   13.604   14.604

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   89.2736 -60.6113 0.0097   57.7   -9.3       6.6268    19.6  TRIG_00335105       
------------------------------------------
 
Foreground time interval of the image:
 -5.304  14.456 (delta_t =  19.760 [sec])
Background time interval of the image:
-144.123  -5.304 (delta_t = 138.819 [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   -5.304 sec. to   14.456 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19181     ( -0.111436   0.109579 )
Norm@50keV  : 2.466474E-02    ( -1.681719E-03   1.673836E-03) )
------------------------------------------------------------
 Chi-Squared =      61.09561     using    59 PHA bins.
 Reduced chi-squared =      1.071853     for     57 degrees of freedom
 Null hypothesis probability = 0.331
 
Photon flux (15-150 keV)    in 19.76 sec: 2.89184 ( -0.21252  0.21377 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.95658e-06 ( -3.2934e-07  3.28648e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -5.304 sec. to   14.456 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.562977     ( -0.528718   0.472039 )
Epeak [keV] : 140.335      ( -37.7454 215.785 )
Norm@50keV  : 4.515471E-02    ( -1.619183E-02   2.831648E-02) )
------------------------------------------------------------
 Chi-Squared =      55.78638     using    59 PHA bins.
 Reduced chi-squared =     0.9961854     for     56 degrees of freedom
 Null hypothesis probability = 0.483
 
Photon flux (15-150 keV)    in 19.76 sec: 2.80967 ( -0.21834  0.22025 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.90726e-06 ( -3.37639e-07  3.35307e-07 ) ergs/cm2
 
Band function
Time interval is from   -5.304 sec. to   14.456 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.382504E-02   ( -0.908499   3.77829 )
beta        : -1.46992    ( -8.53008   0.262715 )
Epeak [keV] : 84.5844      ( -50.0985 218.883 )
Norm@50keV   : 9.069004E-02    ( -6.066253E-02   176.232 )
------------------------------------------------------------
 Chi-Squared =      55.35201     using    59 PHA bins.
 Reduced chi-squared =      1.006400     for     55 degrees of freedom
 Null hypothesis probability = 0.461
 
Photon flux (15-150 keV)    in 19.76 sec: 2.76045 ( -0.22033  0.34769 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.90469e-06 ( -3.37264e-07  3.35288e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   13.736 sec. to   14.472 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75034     ( -0.352910   0.369093 )
Norm@50keV  : 3.214721E-02    ( -8.049037E-03   8.015588E-03) )
------------------------------------------------------------
 Chi-Squared =      82.31635     using    59 PHA bins.
 Reduced chi-squared =      1.444147     for     57 degrees of freedom
 Null hypothesis probability = 1.576E-02
 
Photon flux (15-150 keV)    in 0.7360 sec: 4.34720 ( -1.13918  1.14887 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.18309e-07 ( -5.51146e-08  5.54237e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   13.736 sec. to   14.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.44124     (     )
Epeak [keV] : 56.7617      ( -7.75959 8.14314 )
Norm@50keV  : 3.09559    ( -2.44278   4.65066 )
------------------------------------------------------------
 Chi-Squared =      73.01964     using    59 PHA bins.
 Reduced chi-squared =      1.303922     for     56 degrees of freedom
 Null hypothesis probability = 6.291E-02
 
Photon flux (15-150 keV)    in 0.7360 sec: 4.11076 ( -0.93854  1.01943 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24239e-07 ( -5.20588e-08  5.30509e-08 ) ergs/cm2
 
Band function
Time interval is from   13.736 sec. to   14.472 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.961275   ( -3.62088   1.16589 )
beta        : -2.77982    ( -3.97478   15.8784 )
Epeak [keV] : 76.7184      ( -13.5618 6.51244 )
Norm@50keV   : 7.569059E-02    ( -6.88905   33.1451 )
------------------------------------------------------------
 Chi-Squared =      79.56213     using    59 PHA bins.
 Reduced chi-squared =      1.446584     for     55 degrees of freedom
 Null hypothesis probability = 1.681E-02
 
Photon flux (15-150 keV)    in 0.7360 sec: 4.19438 ( -1.08853  0.94046 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.22792e-07 ( -5.17018e-08  4.98537e-08 ) ergs/cm2
 
Plot creation:
Sun Nov 23 09:25:34 EST 2008