batgrbproduct Analysis for Trigger=578553

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Nov 24 20:44:37 EST 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger578553/GCN5_download_cron
======================================================================

  Trigger: 00578553      Segment: 000

  BAT Trigger Time: 406972208   [s; MET]
      Trigger Stop: 406972272   [s; MET]
               UTC: 2013-11-24T07:49:56.688220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 166.094191118335   Dec: -23.2735973193784  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.87
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.87

  Flight Position:   [ source = BAT ]
    RA: 166.094191118335   Dec: -23.2735973193784  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 166.098993491764   Dec: -23.2642570213299  [deg; J2000]  
        { 11h 04m 23.8s , -23d 15' 51.3" }
         +/- nan [arcmin] (estimated 90% radius based on SNR)
         +/- 2.18564784958445 [arcmin] (formal 1-sigma fit error)
    SNR: -4.53201157133583
 
  Angular difference between Flight and Ground position is 0.619788 arcmin
 
  Partial Coding Fraction: 0.609375    [ including projection effects ]

  Duration
     T90: 0.0559999942779541 +/- 0.004
        Measured from: 73.2840000987053
                   to: 73.3400000929832     [s; relative to TRIGTIME]
     T50: 0.0359999537467957 +/- 0.004
        Measured from: 73.296000123024
                   to: 73.3320000767708     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 72.8159999847412     
                   to: 73.8159999847412     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 73.283999979496     
                   to: 73.3439999818802     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.006756  -0.002632  -0.003866  -0.005219
           0.002117   0.002062   0.002195   0.002412 [error]
 Peak      0.003212  -0.006977   0.007495  -0.000301
           0.008237   0.008580   0.008397   0.009684 [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 1.42e-12 5.24e-12 1.64e-11 1.65e-10 4.58e-11 1.86e-10   erg/cm2
              Error 1.47e-10 1.18e-10 7.51e-11 4.88e-10 3.51e-10 4.93e-10   erg/cm2
Peak flux Power-law 7.70e-04 3.90e-03 1.69e-02 2.91e-01 5.15e-02 0.00e+00   ph/cm2/s
              Error 5.46e-02 2.72e-02 3.58e-02 5.53e-01 9.79e-02 0.00e+00   ph/cm2/s
 
Fluence   Cutoff-PL 5.53e-11 1.19e-10 1.16e-10 4.30e-11 3.23e-10 3.33e-10   erg/cm2
              Error 3.18e-11 4.54e-11 7.70e-11 2.98e-10 1.50e-10 3.63e-10   erg/cm2
Peak flux Cutoff-PL 1.36e-05 2.01e-03 4.09e-02 3.48e-03 7.82e-02 0.00e+00   ph/cm2/s
              Error 5.77e-02 3.68e-02 6.38e-02 1.36e-02 1.03e-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    0.318    0.000    -      -           5.01e-05 5.46e-04   66.560 57
CPL  -9.564    0.000      82.9    0.0      8.95e-01 9.31e+00   65.860 56
 
The chi2 of BB fit is  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    1.500    0.000    -      -           0.00e+00 8.77e-04   57.010 57
CPL   1.000    0.000      50.0    0.0      0.00e+00 0.00e+00   57.010 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    0.060   73.284   73.344
T90     0.056   73.284   73.340
T50     0.036   73.296   73.332
Peak    1.000   72.816   73.816

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  166.0990 -23.2643 0.0425   36.9 -178.9      -0.0195    -4.5  TRIG_00578553       
------------------------------------------
 
Foreground time interval of the image:
 73.284  73.344 (delta_t =   0.060 [sec])
Background time interval of the image:
-179.000 -13.750 (delta_t = 165.250 [sec])
-13.000  73.284 (delta_t =  86.284 [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   73.284 sec. to   73.344 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.318498     ( -0.350651   -0.350651 )
Norm@50keV  : 5.00782E-05    ( -5.2683e-05   0.0010398 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.56 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     57 degrees of freedom 
# Null hypothesis probability =   1.810412e-01
 
Photon flux (15-150 keV)    in 0.06 sec: 6.42227E-03 ( -0.00642222  0.249073 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.58442e-11 ( -4.58442e-11  6.56616e-10 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   73.284 sec. to   73.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.56411     (     )
Epeak [keV] : 82.8983      ( -83.0251 -83.0251 )
Norm@50keV  : 0.894905    ( -0.943494   17.6695 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.86 using 59 PHA bins.
# Reduced chi-squared =          1.176 for     56 degrees of freedom 
# Null hypothesis probability =   1.724761e-01
 
Photon flux (15-150 keV)    in 0.06 sec: 7.21597E-02 ( -0.0721597  0.281057 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.22763e-10 ( -1.30673e-10  1.69801e-10 ) ergs/cm2
 
Band function
Time interval is from   73.284 sec. to   73.344 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.05899   ( -2.71866   -2.71866 )
beta        : -9.37167    ( 4.24935   4.24935 )
Epeak [keV] : 75.5479      ( -75.7868 -75.7868 )
Norm@50keV   : 6.64188E-02    ( -0.0641942   14.3125 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.21 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     55 degrees of freedom 
# Null hypothesis probability =   1.431765e-01
 
Photon flux (15-150 keV)    in 0.06 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]    : 5.00000  (-5  -5)
R^2/D10^2   : 0.0  (0   0)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.61 using 59 PHA bins.
# Reduced chi-squared =          1.186 for     57 degrees of freedom 
# Null hypothesis probability =   1.586617e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 7.00000       (-7      -7)
Norm        : 0.0       (0     0)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.61 using 59 PHA bins.
# Reduced chi-squared =          1.186 for     57 degrees of freedom 
# Null hypothesis probability =   1.586617e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.61 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.65 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.61 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.45 using 59 PHA bins.
# Reduced chi-squared =          1.229 for     55 degrees of freedom 
# Reduced chi-squared =          1.212 for     55 degrees of freedom 
# Reduced chi-squared =          1.211 for     55 degrees of freedom 
# Reduced chi-squared =          1.208 for     55 degrees of freedom 
# Null hypothesis probability =   1.182196e-01
# Null hypothesis probability =   1.349100e-01
# Null hypothesis probability =   1.356568e-01
# Null hypothesis probability =   1.385240e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Peak spectrum fit

Power-law model
Time interval is from   72.816 sec. to   73.816 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50000     ( -1.5   -1.5 )
Norm@50keV  : 0.0    ( 0   0.00175433 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.01 using 59 PHA bins.
# Reduced chi-squared =          1.000 for     57 degrees of freedom 
# Null hypothesis probability =   4.747910e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.15316E-02 ( -0.0515316  0.144234 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.47179e-09 ( -8.47179e-09  2.04091e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   72.816 sec. to   73.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 0.0    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.01 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     56 degrees of freedom 
# Null hypothesis probability =   4.373751e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.81544E-02 ( -0.0781544  0.128346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.37938e-09 ( -2.17788e-09  2.83002e-09 ) ergs/cm2
 
Band function
Time interval is from   72.816 sec. to   73.816 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.999826   ( 0.98395   0.98395 )
beta        : 1.09302    ( 2.5   2.5 )
Epeak [keV] : 0.984277      ( -80 -80 )
Norm@50keV   : 3.04306E-02    ( -0.0295406   1.52772e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.50 using 59 PHA bins.
# Reduced chi-squared =          1.027 for     55 degrees of freedom 
# Null hypothesis probability =   4.186561e-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]    : 199.321  (  )
R^2/D10^2   : 2.22436E-05  (-3.21552e-05   -3.21552e-05)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.56 using 59 PHA bins.
# Reduced chi-squared =         0.9923 for     57 degrees of freedom 
# Null hypothesis probability =   4.914289e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.088e-10   3.436e-10
25- 50  1.965e-10   2.972e-11
50-150  1.882e-12   1.384e-15
15-150  8.072e-10   1.944e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 8.14043       (-8.14483      -8.14483)
Norm        : 0.170611       (-0.169812     -0.169812)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.01 using 59 PHA bins.
# Reduced chi-squared =          1.000 for     57 degrees of freedom 
# Null hypothesis probability =   4.748248e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.671e-11   0.000e+00
25- 50  2.449e-11   0.000e+00
50-150  9.128e-13   0.000e+00
15-150  1.021e-10   0.000e+00
Double BB
#Fit statistic : Chi-Squared =          56.65 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.52 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.48 using 59 PHA bins.
# Reduced chi-squared =          1.036 for     55 degrees of freedom 
# Reduced chi-squared =          1.031 for     55 degrees of freedom 
# Reduced chi-squared =          1.030 for     55 degrees of freedom 
# Reduced chi-squared =          1.028 for     55 degrees of freedom 
# Reduced chi-squared =          1.027 for     55 degrees of freedom 
# Null hypothesis probability =   4.018790e-01
# Null hypothesis probability =   4.120823e-01
# Null hypothesis probability =   4.132986e-01
# Null hypothesis probability =   4.181137e-01
# Null hypothesis probability =   4.193200e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Plot creation:
Sun Nov 24 21:03:45 EST 2013