batgrbproduct Analysis for Trigger=547918

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Feb  7 16:51:45 EST 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger547918/GCN5_download_cron
======================================================================

  Trigger: 00547918      Segment: 000

  BAT Trigger Time: 381872198.784   [s; MET]
      Trigger Stop: 381872200.832   [s; MET]
               UTC: 2013-02-06T19:36:28.596780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 140.374791824771   Dec: -58.1604827693569  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.15
     Image Trigger?:     NO
     Rate S/N Ratio:     14.3527000944073  [ if not an image trigger ]
     Image S/N Ratio:    8.15

  Flight Position:   [ source = BAT ]
    RA: 140.374791824771   Dec: -58.1604827693569  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 140.378554701087   Dec: -58.1997107090987  [deg; J2000]  
        { 09h 21m 30.9s , -58d 11' 59.0" }
         +/- 1.54423195343065 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.533789429047596 [arcmin] (formal 1-sigma fit error)
    SNR: 16.3504249575885
 
  Angular difference between Flight and Ground position is 2.356685 arcmin
 
  Partial Coding Fraction: 0.5234375    [ including projection effects ]

  Duration
     T90: 121 +/- 32.3882694814033
        Measured from: -4.78399986028671
                   to: 116.216000139713     [s; relative to TRIGTIME]
     T50: 44 +/- 8.06225774829855
        Measured from: 6.21600013971329
                   to: 50.2160001397133     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.216000020504     
                   to: 2.216000020504     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.783999979496     
                   to: 147.216000020504     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.002387   1.061719   0.941292   0.144792
           0.094267   0.094693   0.083463   0.075620 [error]
 Peak      0.034055   0.042922   0.024422   0.012193
           0.007978   0.008371   0.007583   0.006586 [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 2.87e-07 5.03e-07 6.73e-07 1.85e-06 1.96e-06 3.31e-06   erg/cm2
              Error 4.44e-08 4.67e-08 8.50e-08 5.05e-07 2.01e-07 5.70e-07   erg/cm2
Peak flux Power-law 3.20e-01 2.94e-01 1.87e-01 1.82e-01 8.76e-01 9.82e-01   ph/cm2/s
              Error 1.12e-01 6.89e-02 6.05e-02 1.17e-01 2.03e-01 2.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.88e-07 5.04e-07 6.72e-07 1.82e-06 1.96e-06 0.00e+00   erg/cm2
              Error 4.66e-08 4.97e-08 8.62e-08 7.06e-07 1.56e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 3.06e-01 3.19e-01 1.85e-01 1.17e-03 8.59e-01 8.84e-01   ph/cm2/s
              Error 1.19e-01 9.22e-02 4.13e-02 2.06e-01 2.63e-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 1.41e-01 8.87e-01 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    1.580    0.166    -      -           1.35e-03 1.27e-04    0.000 57
CPL   1.581    0.568    9999.1    0.0      1.35e-03 9.40e-04    0.000 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.655    0.397    -      -           6.70e-03 1.71e-03    0.000 57
CPL   1.045    1.926      64.9   -7.2      1.53e-02 3.70e-01    0.000 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: 59.776000 sec.
T50 in the 50-300 keV band: 37.632000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  156.000   -8.784  147.216
T90   121.000   -4.784  116.216
T50    44.000    6.216   50.216
Peak    1.000    1.216    2.216

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  140.3786 -58.1997 0.0118   30.6   36.8       3.7668    16.4  TRIG_00547918       
------------------------------------------
 
Foreground time interval of the image:
 -8.784 110.816 (delta_t = 119.600 [sec])
112.216 147.216 (delta_t =  35.000 [sec])
Background time interval of the image:
-239.784  -8.784 (delta_t = 231.000 [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
Multiple GTIs in the spectrum
tstart tstop
-8.784000 110.816000
112.216000 147.216000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57989     ( -0.165462   0.167298 )
Norm@50keV  : 1.35115E-03    ( -0.000127579   0.00012643 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          58.46 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.214477e-01
 
Photon flux (15-150 keV)    in 154.6 sec: 0.172565 ( -0.0158039  0.0158367 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.95849e-06 ( -2.0002e-07  2.02144e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-8.784000 110.816000
112.216000 147.216000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58148     ( -0.550202   0.586367 )
Epeak [keV] : 9999.07      ( -9999.35 -9999.35 )
Norm@50keV  : 1.34810E-03    ( -0.000717776   0.00116169 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          58.47 using 59 PHA bins.
# Reduced chi-squared =          1.044 for     56 degrees of freedom 
# Null hypothesis probability =   3.847660e-01
 
Photon flux (15-150 keV)    in 154.6 sec: 0.172582 ( -0.015866  0.015743 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.95628e-06 ( -1.09472e-07  2.0299e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-8.784000 110.816000
112.216000 147.216000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.88740   ( -4.8874   -4.8874 )
beta        : -1.61708    ( -0.192367   0.17606 )
Epeak [keV] : 20.6209      ( -20.6209 5.26531 )
Norm@50keV   : 417.516    ( -37.2336   792032 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          57.75 using 59 PHA bins.
# Reduced chi-squared =          1.050 for     55 degrees of freedom 
# Null hypothesis probability =   3.741137e-01
 
Photon flux (15-150 keV)    in 154.6 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]    : 15.0783  (-1.95468  2.2626)
R^2/D10^2   : 1.81617E-02  (-0.00697986   0.0115085)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared =         100.45 using 59 PHA bins.
# Reduced chi-squared =         1.7624 for     57 degrees of freedom 
# Null hypothesis probability =   3.379697e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.335e-07   2.407e-08
25- 50  5.331e-07   7.367e-08
50-150  8.268e-07   1.476e-07
15-150  1.493e-06   1.819e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 198.837       (-76.3537      -198.873)
Norm        : 0.697209       (-0.0622956     0.0712438)
------------------------------------------------------------
#Test statistic : Chi-Squared =          59.58 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     57 degrees of freedom 
# Null hypothesis probability =   3.820596e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.685e-07   1.009e-07
25- 50  5.163e-07   2.634e-07
50-150  1.131e-06   6.055e-07
15-150  1.916e-06   9.284e-07
Double BB
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.38579        (-1.08461      1.36301)
R1^2/D10^2  : 0.525296        (-0.30784      0.82631)
kT2 [keV]   : 24.6724        (-4.4034      6.80917)
R2^2/D10^2  : 2.80131E-03    (-0.00156816   0.00278362)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.54 using 59 PHA bins.
#Test statistic : Chi-Squared =          54.54 using 59 PHA bins.
# Reduced chi-squared =         0.9917 for     55 degrees of freedom 
# Null hypothesis probability =   4.920733e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.096e-07   1.326e-07
25- 50  4.657e-07   1.561e-07
50-150  1.187e-06   4.646e-07
15-150  1.962e-06   6.038e-07

Peak spectrum fit

Power-law model
Time interval is from    1.216 sec. to    2.216 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65541     ( -0.390442   0.403464 )
Norm@50keV  : 6.70008E-03    ( -0.0017286   0.00168682 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          55.95 using 59 PHA bins.
# Reduced chi-squared =         0.9816 for     57 degrees of freedom 
# Null hypothesis probability =   5.144203e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.876430 ( -0.203287  0.203442 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.22807e-08 ( -1.65621e-08  1.7245e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.216 sec. to    2.216 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04510     ( -2.5098   1.34169 )
Epeak [keV] : 64.8904      ( -50.5784 -64.952 )
Norm@50keV  : 1.52837E-02    ( -0.0152992   0.725644 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          55.37 using 59 PHA bins.
# Reduced chi-squared =         0.9888 for     56 degrees of freedom 
# Null hypothesis probability =   4.985552e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.858605 ( -0.205374  0.206875 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.62043e-08 ( -9.85937e-09  2.84063e-08 ) ergs/cm2
 
Band function
Time interval is from    1.216 sec. to    2.216 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.34942   ( -4.35639   1.24841 )
beta        : -2.24771    ( 9.37167   19.3717 )
Epeak [keV] : 29.2597      ( -33.7923 -67.3905 )
Norm@50keV   : 134.313    ( -133.802   77.3798 )
------------------------------------------------------------
#Test statistic : Chi-Squared =          50.71 using 59 PHA bins.
# Reduced chi-squared =         0.9219 for     55 degrees of freedom 
# Null hypothesis probability =   6.392647e-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]    : 9.45849  (-2.26951  4.06448)
R^2/D10^2   : 0.517684  (-0.380009   0.958324)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared =          58.52 using 59 PHA bins.
# Reduced chi-squared =          1.027 for     57 degrees of freedom 
# Null hypothesis probability =   4.194590e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.232e-09   4.479e-09
25- 50  2.117e-08   1.017e-08
50-150  9.383e-09   5.830e-09
15-150  3.979e-08   1.634e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 132.406       (-77.7851      -129.439)
Norm        : 3.67408       (-0.932439     1.48866)
------------------------------------------------------------
#Test statistic : Chi-Squared =          55.41 using 59 PHA bins.
# Reduced chi-squared =         0.9722 for     57 degrees of freedom 
# Null hypothesis probability =   5.347517e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.522e-09   5.575e-09
25- 50  1.732e-08   9.965e-09
50-150  3.238e-08   2.089e-08
15-150  5.922e-08   3.555e-08
Double BB
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.95544        (-1.83539      2.56466)
R1^2/D10^2  : 1.31629        (-0.901524      2.66358)
kT2 [keV]   : 31.6967        (-15.4148      -31.6839)
R2^2/D10^2  : 4.80471E-03    (-0.00456156   0.0146289)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.61 using 59 PHA bins.
#Test statistic : Chi-Squared =          51.61 using 59 PHA bins.
# Reduced chi-squared =         0.9384 for     55 degrees of freedom 
# Null hypothesis probability =   6.049309e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.089e-08   6.470e-09
25- 50  1.834e-08   1.052e-08
50-150  3.411e-08   1.979e-08
15-150  6.335e-08   3.365e-08
Plot creation:
Thu Feb  7 17:16:45 EST 2013