batgrbproduct Analysis for Trigger=578175

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Nov 20 11:38:05 EST 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger578175/GCN5_download_cron
======================================================================

  Trigger: 00578175      Segment: 000

  BAT Trigger Time: 406585632   [s; MET]
      Trigger Stop: 406585696   [s; MET]
               UTC: 2013-11-19T20:27:00.706100    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 135.6970866904   Dec: -40.3915219264061  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.3
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.3

  Flight Position:   [ source = BAT ]
    RA: 135.6970866904   Dec: -40.3915219264061  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 135.654206298085   Dec: -40.4134031838084  [deg; J2000]  
        { 09h 02m 37.0s , -40d 24' 48.3" }
         +/- 2.69489136464638 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.12894518186055 [arcmin] (formal 1-sigma fit error)
    SNR: 7.38005219174493
 
  Angular difference between Flight and Ground position is 2.358438 arcmin
 
  Partial Coding Fraction: 0.953125    [ including projection effects ]

  Duration
     T90: 128 +/- 144.886162210199
        Measured from: 36.0000001192093
                   to: 164.000000119209     [s; relative to TRIGTIME]
     T50: 128 +/- 144.886162210199
        Measured from: 36.0000001192093
                   to: 164.000000119209     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 43.5     
                   to: 44.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 36     
                   to: 164     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.079247   0.686638  -0.000001  -0.026840
           0.061841   0.062085   0.053359   0.047893 [error]
 Peak      0.017883   0.005131   0.005670  -0.002675
           0.005426   0.005577   0.004904   0.004292 [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 3.53e-07 2.38e-07 1.04e-07 6.31e-08 7.26e-07 7.58e-07   erg/cm2
              Error 3.76e-08 3.20e-08 2.95e-08 3.16e-08 8.31e-08 9.67e-08   erg/cm2
Peak flux Power-law 1.30e-01 6.99e-02 2.34e-02 1.01e-02 2.29e-01 2.34e-01   ph/cm2/s
              Error 7.51e-02 4.59e-02 2.90e-02 2.66e-02 1.24e-01 1.28e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.35e-07 2.73e-07 1.49e-08 7.54e-12 6.23e-07 6.23e-07   erg/cm2
              Error 4.30e-08 4.25e-08 1.82e-08 1.38e-10 6.61e-08 6.61e-08   erg/cm2
Peak flux Cutoff-PL 1.33e-01 8.43e-02 1.52e-03 3.09e-08 2.18e-01 2.19e-01   ph/cm2/s
              Error 6.53e-02 6.76e-02 2.65e-02 2.09e-02 1.19e-01 1.19e-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    3.189    0.249    -      -           4.33e-04 9.29e-05   86.450 57
CPL   1.000    0.000      50.0    0.0      2.23e-03 0.00e+00  190.160 56
 
The chi2 of BB fit is 62.45 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    2.579    1.350    -      -           1.11e-03 1.12e-03   56.860 57
CPL  -6.443    0.000      25.0   35.8      4.39e+03 0.00e+00   56.090 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  128.000   36.000  164.000
T90   128.000   36.000  164.000
T50   128.000   36.000  164.000
Peak    1.000   43.500   44.500

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  135.6542 -40.4134 0.0260   18.3 -141.9       0.5160     7.4  TRIG_00578175       
------------------------------------------
 
Foreground time interval of the image:
 36.000  72.501 (delta_t =  36.501 [sec])
Background time interval of the image:
-60.000  36.000 (delta_t =  96.000 [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
36.000000 142.240000
143.000000 164.000000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.18874     ( -0.238022   0.259381 )
Norm@50keV  : 4.33164E-04    ( -9.01538e-05   9.56726e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          86.45 using 59 PHA bins.
# Reduced chi-squared =          1.517 for     57 degrees of freedom 
# Null hypothesis probability =   7.155020e-03
 
Photon flux (15-150 keV)    in 127.2 sec: 0.137105 ( -0.0130356  0.0130388 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.26357e-07 ( -8.15194e-08  8.46618e-08 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
36.000000 142.240000
143.000000 164.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 2.23383E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         190.16 using 59 PHA bins.
# Reduced chi-squared =         3.3957 for     56 degrees of freedom 
# Null hypothesis probability =   1.664407e-16
 
Photon flux (15-150 keV)    in 127.2 sec: 0.128348 ( -0.01316  0.013108 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.22703e-07 ( -6.48275e-08  6.74592e-08 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
36.000000 142.240000
143.000000 164.000000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.90416   ( -2.05295   -1.83593 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 21.5282      ( -2.08155 2.39108 )
Norm@50keV   : 1.82624    ( -1.82594   132.809 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.61 using 59 PHA bins.
# Reduced chi-squared =          1.138 for     55 degrees of freedom 
# Null hypothesis probability =   2.242763e-01
 
Photon flux (15-150 keV)    in 127.2 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]    : 5.46642  (-0.449156  0.480787)
R^2/D10^2   : 0.773898  (-0.252187   0.386607)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.45 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.886383e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.376e-07   4.935e-08
25- 50  2.730e-07   4.516e-08
50-150  1.679e-08   7.652e-09
15-150  6.274e-07   8.173e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 16.0441       (-2.61552      3.12843)
Norm        : 2.22895       (-0.504869     0.686013)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.49 using 59 PHA bins.
# Reduced chi-squared =          1.237 for     57 degrees of freedom 
# Null hypothesis probability =   1.080967e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.555e-07   4.764e-08
25- 50  2.583e-07   3.733e-08
50-150  5.200e-08   2.300e-08
15-150  6.658e-07   7.956e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.07357        (-5.4712      194.471)
R1^2/D10^2  : 1.48770E+04        (      )
kT2 [keV]   : 5.59889        (-0.502712      0.477509)
R2^2/D10^2  : 0.678695    (-0.679501   0.19543)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.45 using 59 PHA bins.
#Fit statistic : Chi-Squared =          61.39 using 59 PHA bins.
# Reduced chi-squared =          1.136 for     55 degrees of freedom 
# Reduced chi-squared =          1.116 for     55 degrees of freedom 
# Null hypothesis probability =   2.284771e-01
# Null hypothesis probability =   2.576831e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.376e-07   3.849e+00
25- 50  2.733e-07   3.666e+01
50-150  1.685e-08   8.503e+02
15-150  6.277e-07   8.910e+02

Peak spectrum fit

Power-law model
Time interval is from   43.500 sec. to   44.500 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.57893     ( -0.99067   1.71027 )
Norm@50keV  : 1.11145E-03    ( -0.00111105   0.00112063 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.86 using 59 PHA bins.
# Reduced chi-squared =         0.9976 for     57 degrees of freedom 
# Null hypothesis probability =   4.801304e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.229324 ( -0.122352  0.124688 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.13639e-08 ( -7.17518e-09  9.18962e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   43.500 sec. to   44.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -6.44257     (     )
Epeak [keV] : 24.9874      ( -7.30461 64.3909 )
Norm@50keV  : 4385.22    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.09 using 59 PHA bins.
# Reduced chi-squared =          1.002 for     56 degrees of freedom 
# Null hypothesis probability =   4.714521e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.218426 ( -0.112687  0.12489 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.61293e-09 ( -4.60844e-09  1.03536e-08 ) ergs/cm2
 
Band function
Time interval is from   43.500 sec. to   44.500 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.49884   ( -6.67477   0.582792 )
beta        : -4.37644    ( 8.72486   18.7247 )
Epeak [keV] : 24.6632      ( -13.0943 -21.9836 )
Norm@50keV   : 5.08011    ( -5.09304   194.988 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.94 using 59 PHA bins.
# Reduced chi-squared =          1.017 for     55 degrees of freedom 
# Null hypothesis probability =   4.394642e-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]    : 6.18349  (-2.5671  4.56917)
R^2/D10^2   : 0.787893  (-0.787893   7.30353)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.15 using 59 PHA bins.
# Reduced chi-squared =         0.9851 for     57 degrees of freedom 
# Null hypothesis probability =   5.069627e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.175e-09   2.893e-09
25- 50  4.442e-09   3.068e-09
50-150  4.595e-10   4.521e-10
15-150  9.076e-09   6.370e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.0666       (-26.0624      107.01)
Norm        : 2.15834       (-2.15858     7.36787)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.39 using 59 PHA bins.
# Reduced chi-squared =         0.9892 for     57 degrees of freedom 
# Null hypothesis probability =   4.980952e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.059e-09   2.571e-09
25- 50  4.271e-09   2.966e-09
50-150  1.929e-09   2.128e-09
15-150  1.026e-08   7.370e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.62944        (-5.62636      4.97527)
R1^2/D10^2  : 1.02076        (-1.02812      -1.02812)
kT2 [keV]   : 13.9738        (-14.3926      -14.3926)
R2^2/D10^2  : 6.74976E-03    (-0.00602339   -0.00602339)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.05 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     55 degrees of freedom 
# Null hypothesis probability =   4.352549e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.178e-09   3.350e-09
25- 50  4.407e-09   3.721e-09
50-150  1.564e-09   1.824e-09
15-150  1.015e-08   1.037e-08
Plot creation:
Wed Nov 20 11:46:41 EST 2013