batgrbproduct Analysis for Trigger=572742

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Oct  2 23:47:45 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger572742/GCN5_download_cron
======================================================================

  Trigger: 00572742      Segment: 000

  BAT Trigger Time: 402404079.616   [s; MET]
      Trigger Stop: 402404080.64   [s; MET]
               UTC: 2013-10-02T10:54:28.514160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 75.0612139371135   Dec: -75.7266590313801  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.78
     Image Trigger?:     NO
     Rate S/N Ratio:     12.6095202129185  [ if not an image trigger ]
     Image S/N Ratio:    6.78

  Flight Position:   [ source = BAT ]
    RA: 75.0612139371135   Dec: -75.7266590313801  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 75.1348406601413   Dec: -75.7014368911575  [deg; J2000]  
        { 05h 00m 32.4s , -75d 42' 05.2" }
         +/- 1.16858445919277 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.440627728005094 [arcmin] (formal 1-sigma fit error)
    SNR: 24.3478762148783
 
  Angular difference between Flight and Ground position is 1.865065 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 39.1040000319481 +/- 8.08327853500742
        Measured from: -4.41599988937378
                   to: 34.6880001425743     [s; relative to TRIGTIME]
     T50: 13.5040000081062 +/- 3.44650545487221
        Measured from: 0.512000143527985
                   to: 14.0160001516342     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.48400002717972     
                   to: 6.48400002717972     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.95200002193451     
                   to: 41.6000000238419     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.617060   0.665774   0.192995   0.034659
           0.036600   0.037306   0.031649   0.028766 [error]
 Peak      0.038119   0.028999   0.007169   0.009358
           0.005437   0.005598   0.004643   0.004159 [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 1.87e-07 2.31e-07 2.08e-07 3.24e-07 7.37e-07 9.50e-07   erg/cm2
              Error 1.80e-08 1.70e-08 2.76e-08 8.23e-08 6.40e-08 1.16e-07   erg/cm2
Peak flux Power-law 3.17e-01 2.01e-01 8.25e-02 4.59e-02 6.24e-01 6.47e-01   ph/cm2/s
              Error 7.36e-02 4.31e-02 3.30e-02 3.31e-02 1.22e-01 1.30e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.68e-07 2.76e-07 1.61e-07 2.33e-08 6.25e-07 6.28e-07   erg/cm2
              Error 2.05e-08 2.47e-08 3.82e-08 3.12e-08 6.36e-08 6.87e-08   erg/cm2
Peak flux Cutoff-PL 3.10e-01 2.60e-01 2.40e-02 6.46e-05 5.94e-01 5.94e-01   ph/cm2/s
              Error 8.35e-02 6.53e-02 3.81e-02 4.86e-03 1.15e-01 1.15e-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 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    2.153    0.137    -      -           1.66e-03 1.61e-04   81.270 57
CPL   0.357    0.840      34.0    4.3      2.10e-02 3.87e-02   62.160 56
 
The chi2 of BB fit is 73.17 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    2.287    0.388    -      -           3.60e-03 1.11e-03   52.710 57
CPL  -2.378    4.067      27.8    5.4      6.47e+00 0.00e+00   47.990 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: 121.024000 sec.
T50 in the 50-300 keV band: 71.040000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   47.552   -5.952   41.600
T90    39.104   -4.416   34.688
T50    13.504    0.512   14.016
Peak    1.000    5.484    6.484

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   75.1348 -75.7014 0.0079    7.3  -24.9       1.0665    24.3  TRIG_00572742       
------------------------------------------
 
Foreground time interval of the image:
 -5.952  12.285 (delta_t =  18.237 [sec])
Background time interval of the image:
-239.616 -34.436 (delta_t = 205.180 [sec])
-33.616  -5.952 (delta_t =  27.664 [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   -5.952 sec. to   41.600 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.15263     ( -0.134046   0.139495 )
Norm@50keV  : 1.65971E-03    ( -0.000161679   0.000160129 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.27 using 59 PHA bins.
# Reduced chi-squared =          1.426 for     57 degrees of freedom 
# Null hypothesis probability =   1.909121e-02
 
Photon flux (15-150 keV)    in 47.55 sec: 0.268108 ( -0.0192537  0.0192583 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.37429e-07 ( -6.33822e-08  6.45753e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -5.952 sec. to   41.600 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.356981     ( -0.907493   0.772992 )
Epeak [keV] : 34.0387      ( -4.49657 4.0994 )
Norm@50keV  : 2.10126E-02    ( -0.0210289   0.0563105 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.16 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     56 degrees of freedom 
# Null hypothesis probability =   2.661450e-01
 
Photon flux (15-150 keV)    in 47.55 sec: 0.252793 ( -0.019657  0.019771 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.24945e-07 ( -6.02791e-08  6.68268e-08 ) ergs/cm2
 
Band function
Time interval is from   -5.952 sec. to   41.600 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.164316   ( -0.690142   3.62085 )
beta        : -4.36898    ( 4.26443   1.70405 )
Epeak [keV] : 34.2228      ( -6.5743 3.99848 )
Norm@50keV   : 2.75600E-02    ( -0.00832416   7.88715 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.06 using 59 PHA bins.
# Reduced chi-squared =          1.128 for     55 degrees of freedom 
# Null hypothesis probability =   2.390381e-01
 
Photon flux (15-150 keV)    in 47.55 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]    : 8.87256  (-0.645104  0.697776)
R^2/D10^2   : 0.200043  (-0.0522513   0.0705961)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.17 using 59 PHA bins.
# Reduced chi-squared =          1.284 for     57 degrees of freedom 
# Null hypothesis probability =   7.321405e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.447e-07   1.574e-08
25- 50  3.007e-07   2.423e-08
50-150  1.098e-07   2.427e-08
15-150  5.552e-07   4.636e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 47.2974       (-8.03797      10.8653)
Norm        : 1.57884       (-0.184092     0.226124)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.50 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     57 degrees of freedom 
# Null hypothesis probability =   1.823104e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.811e-07   1.700e-08
25- 50  2.549e-07   2.083e-08
50-150  2.346e-07   5.059e-08
15-150  6.706e-07   6.300e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.50367        (-1.85417      1.95779)
R1^2/D10^2  : 0.700974        (-0.393703      2.04674)
kT2 [keV]   : 12.6789        (-2.63248      7.70496)
R2^2/D10^2  : 3.23849E-02    (-0.0294618   0.0623546)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.41 using 59 PHA bins.
# Reduced chi-squared =          1.117 for     55 degrees of freedom 
# Null hypothesis probability =   2.571632e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.697e-07   8.050e-08
25- 50  2.722e-07   1.217e-07
50-150  1.823e-07   1.045e-07
15-150  6.242e-07   2.839e-07

Peak spectrum fit

Power-law model
Time interval is from    5.484 sec. to    6.484 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.28680     ( -0.36102   0.415141 )
Norm@50keV  : 3.59676E-03    ( -0.00110774   0.00110476 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.71 using 59 PHA bins.
# Reduced chi-squared =         0.9247 for     57 degrees of freedom 
# Null hypothesis probability =   6.366441e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.623988 ( -0.122076  0.122275 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.42901e-08 ( -8.5787e-09  9.20392e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    5.484 sec. to    6.484 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.37848     ( -5.37358   2.76019 )
Epeak [keV] : 27.8077      ( -5.19582 5.67936 )
Norm@50keV  : 6.47372    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.99 using 59 PHA bins.
# Reduced chi-squared =         0.8570 for     56 degrees of freedom 
# Null hypothesis probability =   7.680257e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.594197 ( -0.114535  0.115622 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.59272e-08 ( -5.7075e-09  7.2507e-09 ) ergs/cm2
 
Band function
Time interval is from    5.484 sec. to    6.484 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.84289   ( -2.46082   -1.37377 )
beta        : -3.94780    ( 3.86957   1.52083 )
Epeak [keV] : 27.4752      ( -7.29877 5.67417 )
Norm@50keV   : 2.79056    ( -3.14549   349.369 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.45 using 59 PHA bins.
# Reduced chi-squared =         0.8627 for     55 degrees of freedom 
# Null hypothesis probability =   7.554284e-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]    : 7.11986  (-1.16122  1.37643)
R^2/D10^2   : 1.18058  (-0.609317   1.25087)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.00 using 59 PHA bins.
# Reduced chi-squared =         0.8422 for     57 degrees of freedom 
# Null hypothesis probability =   7.961723e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.782e-09   3.537e-09
25- 50  1.384e-08   5.224e-09
50-150  2.438e-09   1.643e-09
15-150  2.606e-08   7.910e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 34.1107       (-12.4228      25.0138)
Norm        : 4.59554       (-1.4599     2.25535)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.53 using 59 PHA bins.
# Reduced chi-squared =         0.8864 for     57 degrees of freedom 
# Null hypothesis probability =   7.149470e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.932e-09   2.399e-09
25- 50  1.214e-08   4.226e-09
50-150  7.816e-09   4.953e-09
15-150  2.989e-08   1.001e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 198.841        (      )
R1^2/D10^2  : 3.88982E-05        (-3.8851e-05      1.53565)
kT2 [keV]   : 6.86563        (-6.86084      1.28946)
R2^2/D10^2  : 1.32867    (-0.649406   1.52171)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.99 using 59 PHA bins.
#Fit statistic : Chi-Squared =          45.66 using 59 PHA bins.
# Reduced chi-squared =         0.8726 for     55 degrees of freedom 
# Reduced chi-squared =         0.8302 for     55 degrees of freedom 
# Null hypothesis probability =   7.371939e-01
# Null hypothesis probability =   8.111697e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.799e-09   9.585e-07
25- 50  1.369e-08   5.825e-06
50-150  2.786e-09   5.665e-05
15-150  2.627e-08   3.896e-05
Plot creation:
Thu Oct  3 00:10:24 EDT 2013