batgrbproduct Analysis for Trigger=519211

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Apr  3 16:09:28 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger519211/GCN5_download_cron
======================================================================

  Trigger: 00519211      Segment: 000

  BAT Trigger Time: 355107931.648   [s; MET]
      Trigger Stop: 355107932.672   [s; MET]
               UTC: 2012-04-03T01:05:23.587920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 42.4589551294051   Dec: 40.4659032923946  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.42
     Image Trigger?:     NO
     Rate S/N Ratio:     9.38083151964686  [ if not an image trigger ]
     Image S/N Ratio:    7.42

  Flight Position:   [ source = BAT ]
    RA: 42.4589551294051   Dec: 40.4659032923946  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 42.4576566057769   Dec: 40.4893835624465  [deg; J2000]  
        { 02h 49m 49.8s , +40d 29' 21.8" }
         +/- 2.28691872305166 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.814899327751189 [arcmin] (formal 1-sigma fit error)
    SNR: 9.33045991230224
 
  Angular difference between Flight and Ground position is 1.410062 arcmin
 
  Partial Coding Fraction: 0.5078125    [ including projection effects ]

  Duration
     T90: 1.24799996614456 +/- 0.191708124385204
        Measured from: 0.052000105381012
                   to: 1.30000007152557     [s; relative to TRIGTIME]
     T50: 0.74399995803833 +/- 0.281822648654789
        Measured from: 0.236000120639801
                   to: 0.980000078678131     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0400000214576721     
                   to: 1.04000002145767     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.40399998426437     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.052622   0.055156   0.050694   0.006334
           0.009736   0.009899   0.008902   0.007319 [error]
 Peak      0.037962   0.049237   0.038085   0.003421
           0.008209   0.008457   0.007750   0.006201 [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 1.55e-08 2.63e-08 3.38e-08 8.74e-08 9.96e-08 1.63e-07   erg/cm2
              Error 4.22e-09 4.69e-09 8.30e-09 4.40e-08 2.00e-08 5.17e-08   erg/cm2
Peak flux Power-law 4.07e-01 3.68e-01 2.29e-01 2.18e-01 1.10e+00 1.22e+00   ph/cm2/s
              Error 1.17e-01 7.16e-02 6.05e-02 1.10e-01 2.12e-01 2.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.40e-08 2.87e-08 3.52e-08 3.11e-08 1.09e-07 0.00e+00   erg/cm2
              Error 4.85e-09 5.95e-09 9.47e-09 5.90e-08 6.11e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 3.49e-01 4.11e-01 2.46e-01 8.04e-02 1.06e+00 1.09e+00   ph/cm2/s
              Error 1.34e-01 8.87e-02 7.21e-02 1.25e-01 2.13e-01 2.36e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 1.10e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 2.35e-01 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.638    0.297    -      -           7.62e-03 1.44e-03   48.470 57
CPL   0.865    1.166      70.8  -26.3      1.94e-02 4.87e-02   46.950 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.682    0.316    -      -           8.30e-03 1.74e-03   57.300 57
CPL   0.655    1.275      62.5  -21.4      2.89e-02 8.20e-02   54.770 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    1.404    0.000    1.404
T90     1.248    0.052    1.300
T50     0.744    0.236    0.980
Peak    1.000    0.040    1.040

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   42.4577 +40.4894 0.0206   33.3  -48.7       0.1695     9.3  TRIG_00519211       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.404 (delta_t =   1.404 [sec])
Background time interval of the image:
-162.247 -57.498 (delta_t = 104.750 [sec])
-56.648   0.000 (delta_t =  56.648 [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    1.404 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63762     ( -0.2907   0.302491 )
Norm@50keV  : 7.62175E-03    ( -0.00144975   0.00142537 )
------------------------------------------------------------
# Chi-Squared =          48.47 using 59 PHA bins.
# Reduced chi-squared =         0.8503 for     57 degrees of freedom 
# Null hypothesis probability =   7.821866e-01
 
Photon flux (15-150 keV)    in 1.404 sec: 0.991191 ( -0.176427  0.176663 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.965e-08 ( -1.98408e-08  2.02232e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.404 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.865008     ( -1.36896   0.962796 )
Epeak [keV] : 70.7573      ( -18.1102 -70.7596 )
Norm@50keV  : 1.93589E-02    ( -0.0193575   0.0780407 )
------------------------------------------------------------
# Chi-Squared =          46.95 using 59 PHA bins.
# Reduced chi-squared =         0.8384 for     56 degrees of freedom 
# Null hypothesis probability =   8.002169e-01
 
Photon flux (15-150 keV)    in 1.404 sec: 0.966403 ( -0.179989  0.179997 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.08994e-07 ( -3.23657e-08  8.9914e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.404 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.864786   ( 0.989218   1.50507 )
beta        : -10.00000    ( 1.98054e+11   1.98054e+11 )
Epeak [keV] : 70.7356      ( -24.4241 -70.7475 )
Norm@50keV   : 1.93636E-02    ( -0.0193567   0.0781209 )
------------------------------------------------------------
# Chi-Squared =          46.95 using 59 PHA bins.
# Reduced chi-squared =         0.8536 for     55 degrees of freedom 
# Null hypothesis probability =   7.716633e-01
 
Photon flux (15-150 keV)    in 1.404 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.8840  (-2.98504  3.66444)
R^2/D10^2   : 0.146769  (-0.083166   0.201334)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          53.47 using 59 PHA bins.
# Reduced chi-squared =         0.9381 for     57 degrees of freedom 
# Null hypothesis probability =   6.082879e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.397e-09   2.861e-09
25- 50  3.097e-08   9.316e-09
50-150  3.914e-08   1.493e-08
15-150  7.851e-08   2.346e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 145.879       (-27.2608      -100.878)
Norm        : 4.15549       (-0.790645     1.02364)
------------------------------------------------------------
# Chi-Squared =          47.32 using 59 PHA bins.
# Reduced chi-squared =         0.8302 for     57 degrees of freedom 
# Null hypothesis probability =   8.160219e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.502e-08   3.384e-09
25- 50  2.772e-08   5.707e-09
50-150  5.409e-08   1.160e-08
15-150  9.684e-08   1.798e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.02994        (-2.7559      3.93747)
R1^2/D10^2  : 1.69895        (-1.36619      17.3567)
kT2 [keV]   : 21.0338        (-6.29633      16.6972)
R2^2/D10^2  : 2.63551E-02    (-0.0233413   0.077929)
------------------------------------------------------------
# Chi-Squared =          46.03 using 59 PHA bins.
# Reduced chi-squared =         0.8369 for     55 degrees of freedom 
# Null hypothesis probability =   8.001064e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.470e-08   8.094e-09
25- 50  2.760e-08   1.457e-08
50-150  5.354e-08   3.372e-08
15-150  9.584e-08   5.098e-08

Peak spectrum fit

Power-law model
Time interval is from    0.040 sec. to    1.040 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68216     ( -0.30723   0.324396 )
Norm@50keV  : 8.30118E-03    ( -0.00175559   0.00172128 )
------------------------------------------------------------
# Chi-Squared =          57.30 using 59 PHA bins.
# Reduced chi-squared =          1.005 for     57 degrees of freedom 
# Null hypothesis probability =   4.638028e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.09570 ( -0.211495  0.211713 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.69759e-08 ( -1.6779e-08  1.71863e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.040 sec. to    1.040 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.654938     ( -1.44474   1.10564 )
Epeak [keV] : 62.5102      ( -19.8083 -62.5391 )
Norm@50keV  : 2.89203E-02    ( -0.0288627   0.135207 )
------------------------------------------------------------
# Chi-Squared =          54.77 using 59 PHA bins.
# Reduced chi-squared =         0.9781 for     56 degrees of freedom 
# Null hypothesis probability =   5.214261e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.06453 ( -0.212878  0.21374 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.93228e-08 ( -2.26331e-08  5.37972e-08 ) ergs/cm2
 
Band function
Time interval is from    0.040 sec. to    1.040 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.654995   ( -7.09987   1.77095 )
beta        : -10.00000    ( 2.71035e+11   2.71035e+11 )
Epeak [keV] : 62.5006      ( -19.8265 -62.527 )
Norm@50keV   : 2.89182E-02    ( -0.0288767   0.135365 )
------------------------------------------------------------
# Chi-Squared =          54.77 using 59 PHA bins.
# Reduced chi-squared =         0.9959 for     55 degrees of freedom 
# Null hypothesis probability =   4.832976e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.5301  (-3.28272  3.97672)
R^2/D10^2   : 0.178900  (-0.106326   0.302392)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          60.07 using 59 PHA bins.
# Reduced chi-squared =          1.054 for     57 degrees of freedom 
# Null hypothesis probability =   3.651463e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.936e-09   2.761e-09
25- 50  2.492e-08   9.538e-09
50-150  2.950e-08   1.217e-08
15-150  6.135e-08   1.760e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 122.527       (-36.1847      -100.403)
Norm        : 4.75206       (-1.00687     1.31301)
------------------------------------------------------------
# Chi-Squared =          55.58 using 59 PHA bins.
# Reduced chi-squared =         0.9750 for     57 degrees of freedom 
# Null hypothesis probability =   5.286083e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.237e-08   2.887e-09
25- 50  2.220e-08   4.665e-09
50-150  4.003e-08   9.615e-09
15-150  7.460e-08   1.553e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.14198        (-2.39387      3.384)
R1^2/D10^2  : 1.81596        (-1.43557      9.93035)
kT2 [keV]   : 20.6635        (-6.01147      12.2667)
R2^2/D10^2  : 3.03043E-02    (-0.025544   0.0866676)
------------------------------------------------------------
# Chi-Squared =          53.09 using 59 PHA bins.
# Reduced chi-squared =         0.9654 for     55 degrees of freedom 
# Null hypothesis probability =   5.477604e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.187e-08   6.820e-09
25- 50  2.239e-08   1.199e-08
50-150  4.079e-08   2.426e-08
15-150  7.505e-08   4.005e-08
Plot creation:
Tue Apr  3 16:24:37 EDT 2012