batgrbproduct Analysis for Trigger=558399

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Jun 18 03:39:23 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger558399/GCN5_download_cron
======================================================================

  Trigger: 00558399      Segment: 000

  BAT Trigger Time: 393155560.944   [s; MET]
      Trigger Stop: 393155560.96   [s; MET]
               UTC: 2013-06-17T09:52:30.259560    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 237.714151615488   Dec: -54.2768302799622  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    8.57
     Image Trigger?:     NO
     Rate S/N Ratio:     27.6405499221705  [ if not an image trigger ]
     Image S/N Ratio:    8.57

  Flight Position:   [ source = BAT ]
    RA: 237.714151615488   Dec: -54.2768302799622  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 237.721174163164   Dec: -54.3007219105831  [deg; J2000]  
        { 15h 50m 53.1s , -54d 18' 02.6" }
         +/- 1.27546247579649 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.492034253928338 [arcmin] (formal 1-sigma fit error)
    SNR: 21.4864438410339
 
  Angular difference between Flight and Ground position is 1.454443 arcmin
 
  Partial Coding Fraction: 0.875    [ including projection effects ]

  Duration
     T90: 0.13999992609024 +/- 0.0126491362748289
        Measured from: 1.19209289550781e-07
                   to: 0.14000004529953     [s; relative to TRIGTIME]
     T50: 0.0799999833106995 +/- 0.0144221847352656
        Measured from: 0.0160000920295715
                   to: 0.096000075340271     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.424000024795532     
                   to: 0.575999975204468     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00400000810623169     
                   to: 0.15200001001358     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.044827   0.082896   0.036666   0.003145
           0.004188   0.005199   0.003856   0.001833 [error]
 Peak      0.044146   0.078716   0.044068   0.006661
           0.007181   0.007853   0.006253   0.004693 [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 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 Power-law 5.01e-01 4.67e-01 3.02e-01 3.01e-01 1.39e+00 1.57e+00   ph/cm2/s
              Error 9.27e-02 5.94e-02 4.88e-02 9.14e-02 1.75e-01 1.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.13e-08 3.56e-08 2.77e-08 2.74e-09 7.72e-08 7.73e-08   erg/cm2
              Error 2.24e-09 3.39e-09 4.14e-09 1.66e-09 6.85e-09 6.93e-09   erg/cm2
Peak flux Cutoff-PL 3.61e-01 5.97e-01 3.31e-01 1.33e+00 1.33e+00 0.00e+00   ph/cm2/s
              Error 1.12e-01 8.82e-02 6.53e-02 1.78e-01 1.82e-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 0.00e+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    2.160    0.000    -      -           4.58e-02 0.00e+00  138.220 57
CPL  -1.544    0.897      46.2    2.9      4.39e+00 6.38e+00   50.040 56
 
The chi2 of BB fit is 49.46 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.630    0.189    -      -           1.07e-02 1.42e-03   69.760 57
CPL  -0.755    1.371      52.9    9.0      2.06e-01 7.24e-01   54.160 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: 0.128000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.156   -0.004    0.152
T90     0.140    0.000    0.140
T50     0.080    0.016    0.096
Peak    1.000   -0.424    0.576

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  237.7212 -54.3007 0.0090   22.0   19.5       0.1707    21.5  TRIG_00558399       
------------------------------------------
 
Foreground time interval of the image:
 -0.004   0.152 (delta_t =   0.156 [sec])
Background time interval of the image:
-239.944  -0.004 (delta_t = 239.940 [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   -0.004 sec. to    0.152 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.15976     (     )
Norm@50keV  : 4.58098E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         138.22 using 59 PHA bins.
# Reduced chi-squared =         2.4249 for     57 degrees of freedom 
# Null hypothesis probability =   1.068270e-08
 
Photon flux (15-150 keV)    in 0.156 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.004 sec. to    0.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.54426     ( -0.981564   0.812405 )
Epeak [keV] : 46.2282      ( -2.8731 2.92657 )
Norm@50keV  : 4.39127    ( -2.7292   10.037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.04 using 59 PHA bins.
# Reduced chi-squared =         0.8936 for     56 degrees of freedom 
# Null hypothesis probability =   6.987513e-01
 
Photon flux (15-150 keV)    in 0.156 sec: 8.03826 ( -0.69191  0.69308 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.71716e-08 ( -6.83951e-09  6.85854e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.004 sec. to    0.152 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.54658   ( -1.0688   0.810117 )
beta        : -9.98140    ( 9.9814   19.9768 )
Epeak [keV] : 46.2170      ( -2.86912 2.91866 )
Norm@50keV   : 4.40599    ( -2.74073   10.7683 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.04 using 59 PHA bins.
# Reduced chi-squared =         0.9099 for     55 degrees of freedom 
# Null hypothesis probability =   6.640720e-01
 
Photon flux (15-150 keV)    in 0.156 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]    : 11.9322  (-0.742377  0.754825)
R^2/D10^2   : 2.41820  (-0.514823   0.659663)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.46 using 59 PHA bins.
# Reduced chi-squared =         0.8677 for     57 degrees of freedom 
# Null hypothesis probability =   7.507043e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.135e-08   1.536e-09
25- 50  3.550e-08   3.175e-09
50-150  3.027e-08   5.218e-09
15-150  7.712e-08   7.270e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 58.3149       (-8.53166      9.77768)
Norm        : 43.9462       (-4.99719     5.11679)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.19 using 59 PHA bins.
# Reduced chi-squared =          1.705 for     57 degrees of freedom 
# Null hypothesis probability =   7.213484e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.715e-08   1.796e-09
25- 50  2.587e-08   2.231e-09
50-150  2.874e-08   4.914e-09
15-150  7.176e-08   6.700e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.99910        (-1.99649      11.0042)
R1^2/D10^2  : 980.298        (-993.436      -993.436)
kT2 [keV]   : 12.1324        (-0.802067      0.870255)
R2^2/D10^2  : 2.23089    (-0.578476   0.596903)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
# Reduced chi-squared =         0.8711 for     55 degrees of freedom 
# Null hypothesis probability =   7.399502e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.224e-08   1.717e-09
25- 50  3.461e-08   4.157e-09
50-150  3.082e-08   5.288e-09
15-150  7.767e-08   8.315e-09

Peak spectrum fit

Power-law model
Time interval is from   -0.424 sec. to    0.576 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62953     ( -0.186893   0.191834 )
Norm@50keV  : 1.07475E-02    ( -0.00142108   0.00140972 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.76 using 59 PHA bins.
# Reduced chi-squared =          1.224 for     57 degrees of freedom 
# Null hypothesis probability =   1.194419e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.39402 ( -0.174797  0.174927 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00178e-07 ( -1.39082e-08  1.40677e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.424 sec. to    0.576 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.754973     ( -1.57543   1.16659 )
Epeak [keV] : 52.8943      ( -6.82019 11.1721 )
Norm@50keV  : 0.206173    ( -0.212003   1.23665 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.16 using 59 PHA bins.
# Reduced chi-squared =         0.9672 for     56 degrees of freedom 
# Null hypothesis probability =   5.447122e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.32542 ( -0.17825  0.17848 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.424 sec. to    0.576 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.772421   ( -1.04858   1.32718 )
beta        : -9.99994    ( 9.99994   19.9998 )
Epeak [keV] : 52.8169      ( -6.41645 11.1552 )
Norm@50keV   : 0.211082    ( -0.211082   1.22139 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.16 using 59 PHA bins.
# Reduced chi-squared =         0.9848 for     55 degrees of freedom 
# Null hypothesis probability =   5.066529e-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]    : 13.0737  (-1.41493  1.61215)
R^2/D10^2   : 0.282359  (-0.0991131   0.14668)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.90 using 59 PHA bins.
# Reduced chi-squared =         0.9631 for     57 degrees of freedom 
# Null hypothesis probability =   5.544350e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.024e-08   2.245e-09
25- 50  3.547e-08   6.120e-09
50-150  3.845e-08   9.740e-09
15-150  8.415e-08   1.247e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 135.146       (-48.7434      -133.49)
Norm        : 5.94728       (-0.758258     0.989945)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.20 using 59 PHA bins.
# Reduced chi-squared =          1.126 for     57 degrees of freedom 
# Null hypothesis probability =   2.389046e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.539e-08   3.200e-09
25- 50  2.809e-08   1.144e-08
50-150  5.301e-08   3.082e-08
15-150  9.649e-08   4.251e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.20 using 59 PHA bins.
#Fit statistic : Chi-Squared =          54.16 using 59 PHA bins.
#Fit statistic : Chi-Squared =          54.14 using 59 PHA bins.
#Fit statistic : Chi-Squared =          54.03 using 59 PHA bins.
# Reduced chi-squared =         0.9854 for     55 degrees of freedom 
# Reduced chi-squared =         0.9847 for     55 degrees of freedom 
# Reduced chi-squared =         0.9843 for     55 degrees of freedom 
# Reduced chi-squared =         0.9824 for     55 degrees of freedom 
# Null hypothesis probability =   5.052746e-01
# Null hypothesis probability =   5.068615e-01
# Null hypothesis probability =   5.075518e-01
# Null hypothesis probability =   5.116534e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.150e-08   3.604e-09
25- 50  3.418e-08   8.625e-09
50-150  4.001e-08   1.203e-08
15-150  8.570e-08   2.157e-08
Plot creation:
Tue Jun 18 04:01:07 EDT 2013