batgrbproduct Analysis for Trigger=334112

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Sun Nov  9 09:47:01 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger334112/SDC2
======================================================================

  Trigger: 00334112      Segment: 000

  BAT Trigger Time: 247906929.856   [s; MET]
      Trigger Stop: 247906930.88   [s; MET]
               UTC: 2008-11-09T07:02:06.614940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 330.787413462989   Dec: -54.7186309698602  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.1
     Image Trigger?:     NO
     Rate S/N Ratio:     14.9331845230681  [ if not an image trigger ]
     Image S/N Ratio:    9.1

  Flight Position:   [ source = BAT ]
    RA: 330.787413462989   Dec: -54.7186309698602  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 330.797999911616   Dec: -54.711236771652  [deg; J2000]  
        { 22h 03m 11.5s , -54d 42' 40.5" }
         +/- 0.794984195236931 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.243419740080956 [arcmin] (formal 1-sigma fit error)
    SNR: 42.2146689197544
 
  Angular difference between Flight and Ground position is 0.575718 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 192 +/- 160
        Measured from: -15.8560000061989
                   to: 176.143999993801     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: -15.8560000061989
                   to: 16.1439999938011     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.64399999380112     
                   to: 8.64399999380112     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.8560000061989     
                   to: 416.143999993801     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.044127   2.466677   1.518870   0.308670
           0.096983   0.097471   0.086683   0.075429 [error]
 Peak      0.620608   0.789714   0.531019   0.117643
           0.024092   0.024751   0.021958   0.017675 [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 6.21e-07 9.96e-07 1.21e-06 2.86e-06 3.64e-06 5.68e-06   erg/cm2
              Error 5.19e-08 4.96e-08 8.67e-08 4.41e-07 2.01e-07 5.10e-07   erg/cm2
Peak flux Power-law 3.84e-01 3.57e-01 2.31e-01 2.30e-01 1.07e+00 1.20e+00   ph/cm2/s
              Error 2.73e-02 1.50e-02 1.18e-02 2.46e-02 4.35e-02 4.63e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.87e-13 4.87e-13 4.87e-13 4.87e-13 4.87e-13 4.87e-13   erg/cm2
              Error 2.16e+14 2.16e+14 2.16e+14 2.16e+14 2.16e+14 2.16e+14   erg/cm2
Peak flux Cutoff-PL 1.13e-02 1.13e-02 1.13e-02 1.13e-02 1.13e-02 1.13e-02   ph/cm2/s
              Error 5.00e+23 5.00e+23 5.00e+23 5.00e+23 5.00e+23 5.00e+23   ph/cm2/s
 
Fluence        Band 5.79e-07 1.03e-06 1.19e-06 2.47e-06 3.56e-06 5.28e-06   erg/cm2
              Error 6.70e-08 6.92e-08 9.24e-08 9.42e-07 2.23e-07 8.86e-07   erg/cm2
Peak flux      Band 3.62e-01 3.64e-01 2.36e-01 1.68e-01 1.05e+00 1.13e+00   ph/cm2/s
              Error 3.45e-02 1.68e-02 1.30e-02 6.36e-02 4.75e-02 7.58e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.724    0.093    -      -           9.13e-04 4.78e-05   52.556 57
CPL   1.358    0.325      83.9    0.0      1.41e-03 4.89e-04   52.239  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.631    0.073    -      -           8.22e-03 3.27e-04   62.377 57
CPL   1.350    0.295     118.0 1631.1      1.13e-02 3.77e-03   59.550  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: 60.928000 sec.
T50 in the 50-300 keV band: 20.928000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  432.000  -15.856  416.144
T90   192.000  -15.856  176.144
T50    32.000  -15.856   16.144
Peak    1.000    7.644    8.644

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  330.7980 -54.7112 0.0046   20.3  -90.1       3.4449    42.2  TRIG_00334112       
------------------------------------------
 
Foreground time interval of the image:
-15.856  16.949 (delta_t =  32.805 [sec])
Background time interval of the image:
-76.651 -15.856 (delta_t =  60.795 [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  -15.856 sec. to  416.144 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72389     ( -9.264421E-02   9.386122E-02) )
Norm@50keV  : 9.125462E-04    ( -4.792976E-05   4.762522E-05) )
------------------------------------------------------------
 Chi-Squared =      52.55619     using    59 PHA bins.
 Reduced chi-squared =     0.9220384     for     57 degrees of freedom
 Null hypothesis probability = 0.642
 
Photon flux (15-150 keV)    in 432.0 sec: 0.122226 ( -0.006148  0.006159 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.64379e-06 ( -2.0015e-07  2.01122e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.856 sec. to  416.144 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35766     ( -0.268266   0.381862 )
Epeak [keV] : 83.8676      (   )
Norm@50keV  : 1.410468E-03    ( -2.595376E-04   7.190704E-04) )
------------------------------------------------------------
 Chi-Squared =      52.23852     using    59 PHA bins.
 but latest trial   1.91418     gives Chi-Squared =   11.2746
 but latest trial  8.299572E-04 gives Chi-Squared =   9.01419
 Reduced chi-squared =     0.9328307     for     56 degrees of freedom
 Null hypothesis probability = 0.618
 
Photon flux (15-150 keV)    in 432.0 sec: 1.126338E-03 ( -0.00112634  1e+24 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.86579e-13 ( -4.86579e-13  4.32e+14 ) ergs/cm2
 
Band function
Time interval is from  -15.856 sec. to  416.144 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.14520   ( -8.85480   1.83085 )
beta        : -1.86088    ( -0.968323   0.180372 )
Epeak [keV] : 58.0504      ( -57.9504 9941.95 )
Norm@50keV   : 1.972602E-03    ( -1.972602E-03   5.420458E-02) )
------------------------------------------------------------
 Chi-Squared =      50.55258     using    59 PHA bins.
 Reduced chi-squared =     0.9191378     for     55 degrees of freedom
 Null hypothesis probability = 0.645
 
Photon flux (15-150 keV)    in 432.0 sec: 0.119673 ( -0.00687  0.006794 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.5592e-06 ( -2.25068e-07  2.21037e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.144 sec. to   16.144 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63103     ( -7.248926E-02   7.305872E-02) )
Norm@50keV  : 8.218409E-03    ( -3.274847E-04   3.266251E-04) )
------------------------------------------------------------
 Chi-Squared =      62.37739     using    59 PHA bins.
 Reduced chi-squared =      1.094340     for     57 degrees of freedom
 Null hypothesis probability = 0.291
 
Photon flux (15-150 keV)    in 16.00 sec: 1.06651 ( -0.04344  0.04353 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22555e-06 ( -5.21184e-08  5.19584e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.144 sec. to   16.144 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34990     ( -0.305482   0.284171 )
Epeak [keV] : 118.009      ( -36.8986 3225.27 )
Norm@50keV  : 1.129116E-02    ( -2.993855E-03   4.536749E-03) )
------------------------------------------------------------
 Chi-Squared =      59.55036     using    59 PHA bins.
 but latest trial  8.295029E-03 gives Chi-Squared =   2.87193
 Reduced chi-squared =      1.063399     for     56 degrees of freedom
 Null hypothesis probability = 0.348
 
Photon flux (15-150 keV)    in 16.00 sec: 1.129116E-02 ( -0.0112912  1e+24 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.80659e-13 ( -1.80659e-13  1.6e+13 ) ergs/cm2
 
Band function
Time interval is from    0.144 sec. to   16.144 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.09616   ( -0.420683   1.03361 )
beta        : -1.75553    ( -8.24447   0.140347 )
Epeak [keV] : 70.4494      ( -40.5481 9781.23 )
Norm@50keV   : 1.625561E-02    ( -7.927706E-03   5.089046E-02) )
------------------------------------------------------------
 Chi-Squared =      59.42703     using    59 PHA bins.
 Reduced chi-squared =      1.080492     for     55 degrees of freedom
 Null hypothesis probability = 0.318
 
Photon flux (15-150 keV)    in 16.00 sec: 1.04673 ( -0.047449  0.04761 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.19771e-06 ( -5.91952e-08  5.86064e-08 ) ergs/cm2
 
Plot creation:
Sun Nov  9 11:56:12 EST 2008