batgrbproduct Analysis for Trigger=519256

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Apr  4 00:06:07 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger519256/GCN5_download_hand
======================================================================

  Trigger: 00519256      Segment: 000

  BAT Trigger Time: 355178044.544   [s; MET]
      Trigger Stop: 355178046.592   [s; MET]
               UTC: 2012-04-03T20:33:56.481060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 54.8088242661129   Dec: -89.0369268415211  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.17
     Image Trigger?:     NO
     Rate S/N Ratio:     13  [ if not an image trigger ]
     Image S/N Ratio:    7.17

  Flight Position:   [ source = BAT ]
    RA: 54.8088242661129   Dec: -89.0369268415211  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 54.3024886612808   Dec: -89.0291830059353  [deg; J2000]  
        { 03h 37m 12.6s , -89d 01' 45.1" }
         +/- 2.44083490949671 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.33424642683046 [arcmin] (formal 1-sigma fit error)
    SNR: 8.50143200371623
 
  Angular difference between Flight and Ground position is 0.691895 arcmin
 
  Partial Coding Fraction: 0.4765625    [ including projection effects ]

  Duration
     T90: 7.28399991989136 +/- 1.919334249261
        Measured from: -2.59999990463257
                   to: 4.68400001525879     [s; relative to TRIGTIME]
     T50: 2.72399997711182 +/- 2.17025436146543
        Measured from: -0.635999917984009
                   to: 2.08800005912781     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.915999948978424     
                   to: 1.91599994897842     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.96000003814697     
                   to: 5.32799994945526     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.142084   0.114402   0.104753  -0.030192
           0.022381   0.022587   0.019270   0.016285 [error]
 Peak      0.029840   0.032618   0.045795   0.002910
           0.008140   0.008556   0.007579   0.005806 [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 3.77e-08 5.82e-08 6.76e-08 1.51e-07 2.08e-07 3.14e-07   erg/cm2
              Error 9.79e-09 1.04e-08 1.85e-08 8.36e-08 4.38e-08 1.02e-07   erg/cm2
Peak flux Power-law 2.70e-01 3.06e-01 2.48e-01 3.36e-01 9.47e-01 1.16e+00   ph/cm2/s
              Error 1.01e-01 7.25e-02 5.94e-02 1.65e-01 2.03e-01 2.47e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.58e-08 6.20e-08 6.84e-08 7.04e-08 2.37e-07 0.00e+00   erg/cm2
              Error 1.08e-08 1.30e-08 2.03e-08 1.16e-07 1.24e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.25e-01 3.22e-01 2.72e-01 9.20e-01 9.93e-01 0.00e+00   ph/cm2/s
              Error 1.26e-01 8.33e-02 7.51e-02 2.10e-01 3.08e-01 0.00e+00   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 1.07e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 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    1.785    0.314    -      -           2.72e-03 5.59e-04   47.160 57
CPL   1.304    1.018      65.6   -7.6      5.02e-03 1.05e-02   46.470 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.302    0.345    -      -           7.93e-03 1.64e-03   53.370 57
CPL   0.526    1.444     105.7    0.0      1.81e-02 0.00e+00   52.430 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    8.288   -2.960    5.328
T90     7.284   -2.600    4.684
T50     2.724   -0.636    2.088
Peak    1.000    0.916    1.916

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   54.3025 -89.0292 0.0227   30.6 -115.9       0.3581     8.5  TRIG_00519256       
------------------------------------------
 
Foreground time interval of the image:
 -2.960   5.328 (delta_t =   8.288 [sec])
Background time interval of the image:
-239.544  -2.960 (delta_t = 236.584 [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   -2.960 sec. to    5.328 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78545     ( -0.304397   0.323168 )
Norm@50keV  : 2.72368E-03    ( -0.000566886   0.000550328 )
------------------------------------------------------------
# Chi-Squared =          47.16 using 59 PHA bins.
# Reduced chi-squared =         0.8273 for     57 degrees of freedom 
# Null hypothesis probability =   8.205372e-01
 
Photon flux (15-150 keV)    in 8.288 sec: 0.373220 ( -0.0667689  0.0667982 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.07933e-07 ( -4.3264e-08  4.44148e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.960 sec. to    5.328 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30365     ( -1.21337   0.821699 )
Epeak [keV] : 65.6318      ( -50.2784 -65.5449 )
Norm@50keV  : 5.01689E-03    ( -0.00303739   0.0179103 )
------------------------------------------------------------
# Chi-Squared =          46.47 using 59 PHA bins.
# Reduced chi-squared =         0.8298 for     56 degrees of freedom 
# Null hypothesis probability =   8.142222e-01
 
Photon flux (15-150 keV)    in 8.288 sec: 0.367906 ( -0.067482  0.067574 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.36564e-07 ( -7.54838e-08  1.71854e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.960 sec. to    5.328 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.31890   ( 1.30403   1.18172 )
beta        : -9.37167    ( 10   20 )
Epeak [keV] : 67.3210      ( -37.2911 -67.3187 )
Norm@50keV   : 4.88904E-03    ( -0.00206617   0.0179654 )
------------------------------------------------------------
# Chi-Squared =          46.47 using 59 PHA bins.
# Reduced chi-squared =         0.8449 for     55 degrees of freedom 
# Null hypothesis probability =   7.867160e-01
 
Photon flux (15-150 keV)    in 8.288 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]    : 12.0588  (-3.13437  4.0196)
R^2/D10^2   : 8.74494E-02  (-0.0557984   0.1761)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          56.74 using 59 PHA bins.
# Reduced chi-squared =         0.9954 for     57 degrees of freedom 
# Null hypothesis probability =   4.849132e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.230e-08   8.599e-09
25- 50  7.058e-08   2.248e-08
50-150  6.192e-08   2.687e-08
15-150  1.548e-07   4.629e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 103.123       (-44.1602      -100.045)
Norm        : 1.64727       (-0.357579     0.489135)
------------------------------------------------------------
# Chi-Squared =          46.48 using 59 PHA bins.
# Reduced chi-squared =         0.8154 for     57 degrees of freedom 
# Null hypothesis probability =   8.389306e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.568e-08   8.288e-09
25- 50  6.208e-08   1.310e-08
50-150  1.023e-07   2.358e-08
15-150  2.001e-07   4.252e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.29746        (-1.55245      2.15528)
R1^2/D10^2  : 1.32620        (-0.976821      4.23564)
kT2 [keV]   : 21.4396        (-5.93526      11.2697)
R2^2/D10^2  : 8.54384E-03    (-0.00665427   0.0207169)
------------------------------------------------------------
# Chi-Squared =          43.61 using 59 PHA bins.
# Reduced chi-squared =         0.7929 for     55 degrees of freedom 
# Null hypothesis probability =   8.657637e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.959e-08   2.217e-08
25- 50  5.689e-08   2.991e-08
50-150  1.102e-07   6.709e-08
15-150  2.067e-07   1.113e-07

Peak spectrum fit

Power-law model
Time interval is from    0.916 sec. to    1.916 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30183     ( -0.347415   0.343361 )
Norm@50keV  : 7.93261E-03    ( -0.00164539   0.00164408 )
------------------------------------------------------------
# Chi-Squared =          53.37 using 59 PHA bins.
# Reduced chi-squared =         0.9363 for     57 degrees of freedom 
# Null hypothesis probability =   6.121055e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.946701 ( -0.202669  0.203489 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.83541e-08 ( -1.75534e-08  1.77281e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.916 sec. to    1.916 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.526352     ( -1.91667   0.971992 )
Epeak [keV] : 105.659      (   )
Norm@50keV  : 1.81147E-02    (     )
------------------------------------------------------------
# Chi-Squared =          52.43 using 59 PHA bins.
# Reduced chi-squared =         0.9362 for     56 degrees of freedom 
# Null hypothesis probability =   6.108406e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.920476 ( -0.210928  0.209414 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.916 sec. to    1.916 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.526517   ( 0.716921   2.15938 )
beta        : -10.00000    ( 6.77638e+10   6.77638e+10 )
Epeak [keV] : 105.646      ( -42.3508 -105.648 )
Norm@50keV   : 1.81126E-02    ( -0.0113017   0.0976598 )
------------------------------------------------------------
# Chi-Squared =          52.43 using 59 PHA bins.
# Reduced chi-squared =         0.9533 for     55 degrees of freedom 
# Null hypothesis probability =   5.734659e-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]    : 18.9830  (-4.00916  5.42398)
R^2/D10^2   : 5.24551E-02  (-0.0301802   0.0644245)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          55.08 using 59 PHA bins.
# Reduced chi-squared =         0.9664 for     57 degrees of freedom 
# Null hypothesis probability =   5.473311e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.717e-09   1.862e-09
25- 50  1.787e-08   7.040e-09
50-150  4.730e-08   1.986e-08
15-150  6.889e-08   2.400e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.998       (      )
Norm        : 3.96020       (-3.9602     -3.9602)
------------------------------------------------------------
# Chi-Squared =          54.47 using 59 PHA bins.
# Reduced chi-squared =         0.9556 for     57 degrees of freedom 
# Null hypothesis probability =   5.706559e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.858e-09   5.610e-09
25- 50  1.896e-08   1.067e-08
50-150  4.159e-08   2.383e-08
15-150  7.041e-08   4.028e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.75526        (-2.16907      4.23119)
R1^2/D10^2  : 2.88405        (-2.80779      18.4467)
kT2 [keV]   : 22.5438        (-5.64686      14.3525)
R2^2/D10^2  : 2.68342E-02    (-0.0229718   0.04749)
------------------------------------------------------------
# Chi-Squared =          51.26 using 59 PHA bins.
# Reduced chi-squared =         0.9320 for     55 degrees of freedom 
# Null hypothesis probability =   6.183480e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.208e-09   4.590e-09
25- 50  1.667e-08   8.715e-09
50-150  5.094e-08   3.097e-08
15-150  7.582e-08   4.165e-08
Plot creation:
Wed Apr  4 08:29:48 EDT 2012