batgrbproduct Analysis for Trigger=151334

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  8 17:29:05 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger151334/GCN5_download_cron
======================================================================

  Trigger: 00151334      Segment: 000

  BAT Trigger Time: 146274626.88   [s; MET]
      Trigger Stop: 146274627.904   [s; MET]
               UTC: 2005-08-20T23:50:27.194600    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 135.55688251993   Dec: -72.6677827863734  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.76
     Image Trigger?:     NO
     Rate S/N Ratio:     14.2828568570857  [ if not an image trigger ]
     Image S/N Ratio:    8.76

  Flight Position:   [ source = BAT ]
    RA: 135.55688251993   Dec: -72.6677827863734  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 135.60847184794   Dec: -72.6414837190511  [deg; J2000]  
        { 09h 02m 26.0s , -72d 38' 29.3" }
         +/- 0.554058218672502 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.13802286982671 [arcmin] (formal 1-sigma fit error)
    SNR: 70.7078784288175
    RA  =   9h  2m 26.0s  (135.608472 deg.)
    Dec = -72d 38' 29" (-72.641484 deg.)
 
  Angular difference between Flight and Ground position is 1.827979 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 11.9920000135899 +/- 0.525463589834239
        Measured from: 1.62000000476837
                   to: 13.6120000183582     [s; relative to TRIGTIME]
     T50: 3.75599998235703 +/- 0.18426067208034
        Measured from: 7.37600001692772
                   to: 11.1319999992847     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.58799999952316     
                   to: 9.58799999952316     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0719999969005585     
                   to: 15.0240000188351     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.693850   1.202158   1.021212   0.207099
           0.021043   0.022430   0.020360   0.014967 [error]
 Peak      0.089098   0.187612   0.189633   0.044878
           0.006085   0.007102   0.007086   0.004712 [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 2.39e-07 4.85e-07 7.67e-07 2.69e-06 2.13e-06 4.11e-06   erg/cm2
              Error 1.22e-08 1.45e-08 2.11e-08 1.72e-07 5.34e-08 0.00e+00   erg/cm2
Peak flux Power-law 9.31e-01 1.23e+00 1.20e+00 2.08e+00 4.05e+00 5.45e+00   ph/cm2/s
              Error 8.02e-02 6.52e-02 5.46e-02 2.01e-01 1.77e-01 2.47e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.96e-07 5.00e-07 8.25e-07 1.25e-06 2.06e-06 2.78e-06   erg/cm2
              Error 1.60e-08 1.59e-08 2.66e-08 2.41e-07 5.80e-08 2.43e-07   erg/cm2
Peak flux Cutoff-PL 7.45e-01 1.28e+00 1.33e+00 1.08e+00 3.95e+00 4.44e+00   ph/cm2/s
              Error 1.01e-01 7.34e-02 7.45e-02 2.59e-01 1.81e-01 3.13e-01   ph/cm2/s
 
Fluence        Band 1.94e-07 4.98e-07 8.23e-07 1.25e-06 2.06e-06 2.78e-06   erg/cm2
              Error 1.59e-08 1.59e-08 2.66e-08 2.41e-07 5.79e-08 2.43e-07   erg/cm2
Peak flux      Band 7.45e-01 1.28e+00 1.33e+00 1.08e+00 3.95e+00 4.44e+00   ph/cm2/s
              Error 1.01e-01 7.34e-02 7.45e-02 2.59e-01 1.82e-01 3.13e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.339    0.045    -      -           1.44e-02 3.51e-04   89.622 57
CPL   0.609    0.211     111.0   17.0      2.98e-02 6.15e-03   48.718 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.041    0.072    -      -           3.51e-02 1.50e-03   68.058 57
CPL   0.221    0.335     127.6   32.8      8.00e-02 2.67e-02   46.780 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: 11.648000 sec.
T50 in the 50-300 keV band: 3.392000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   15.096   -0.072   15.024
T90    11.992    1.620   13.612
T50     3.756    7.376   11.132
Peak    1.000    8.588    9.588

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  135.6085 -72.6415 0.0027   20.2  171.0       3.1748    70.7  TRIG_00151334       
------------------------------------------
 
Foreground time interval of the image:
 -0.072  15.024 (delta_t =  15.096 [sec])
Background time interval of the image:
-209.579  -0.072 (delta_t = 209.507 [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   -0.072 sec. to   15.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33882     ( -4.455626E-02   4.470563E-02) )
Norm@50keV  : 1.442888E-02    ( -3.510583E-04   3.512008E-04) )
------------------------------------------------------------
 Chi-Squared =      89.62161     using    59 PHA bins.
 Reduced chi-squared =      1.572309     for     57 degrees of freedom
 Null hypothesis probability = 3.762E-03
 
Photon flux (15-150 keV)    in 15.10 sec: 1.73438 ( -0.04691  0.04707 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1334e-06 ( -5.3454e-08  5.32879e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.072 sec. to   15.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.608980     ( -0.215656   0.206373 )
Epeak [keV] : 111.050      ( -12.8146 21.1541 )
Norm@50keV  : 2.981918E-02    ( -5.401978E-03   6.894635E-03) )
------------------------------------------------------------
 Chi-Squared =      48.71841     using    59 PHA bins.
 Reduced chi-squared =     0.8699716     for     56 degrees of freedom
 Null hypothesis probability = 0.744
 
Photon flux (15-150 keV)    in 15.10 sec: 1.65242 ( -0.05084  0.0511 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06313e-06 ( -5.80142e-08  5.79538e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.072 sec. to   15.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.609604   ( -0.205683   0.216369 )
beta        : -9.15971    ( -0.840292   4.87511 )
Epeak [keV] : 111.087      ( -12.8601 21.0966 )
Norm@50keV   : 2.979896E-02    ( -5.381824E-03   6.918626E-03) )
------------------------------------------------------------
 Chi-Squared =      48.71857     using    59 PHA bins.
 Reduced chi-squared =     0.8857921     for     55 degrees of freedom
 Null hypothesis probability = 0.712
 
Photon flux (15-150 keV)    in 15.10 sec: 1.65248 ( -0.05091  0.05108 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06197e-06 ( -5.80293e-08  5.77877e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    8.588 sec. to    9.588 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04051     ( -7.198864E-02   7.139909E-02) )
Norm@50keV  : 3.509141E-02    ( -1.498003E-03   1.496367E-03) )
------------------------------------------------------------
 Chi-Squared =      68.05848     using    59 PHA bins.
 Reduced chi-squared =      1.194008     for     57 degrees of freedom
 Null hypothesis probability = 0.150
 
Photon flux (15-150 keV)    in 1.000 sec: 4.05021 ( -0.17741  0.17744 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.74137e-07 ( -1.6945e-08  1.7018e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.588 sec. to    9.588 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.221331     ( -0.348114   0.321161 )
Epeak [keV] : 127.637      ( -21.5929 43.9404 )
Norm@50keV  : 8.001432E-02    ( -2.150587E-02   3.194969E-02) )
------------------------------------------------------------
 Chi-Squared =      46.77976     using    59 PHA bins.
 Reduced chi-squared =     0.8353529     for     56 degrees of freedom
 Null hypothesis probability = 0.805
 
Photon flux (15-150 keV)    in 1.000 sec: 3.94647 ( -0.18122  0.18169 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.65837e-07 ( -1.8042e-08  1.7869e-08 ) ergs/cm2
 
Band function
Time interval is from    8.588 sec. to    9.588 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.221173   ( -0.321292   0.348062 )
beta        : -8.22992    ( -1.77008   6.07342 )
Epeak [keV] : 127.603      ( -21.5623 43.9496 )
Norm@50keV   : 8.003162E-02    ( -2.152278E-02   3.195526E-02) )
------------------------------------------------------------
 Chi-Squared =      46.77990     using    59 PHA bins.
 Reduced chi-squared =     0.8505436     for     55 degrees of freedom
 Null hypothesis probability = 0.777
 
Photon flux (15-150 keV)    in 1.000 sec: 3.94665 ( -0.18159  0.18152 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.65652e-07 ( -1.8037e-08  1.7861e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  8 17:40:31 EST 2008