batgrbproduct analysis for trigger=828672

batgrbproduct Analysis for Trigger=828672

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr 26 07:08:48 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger828672/GCN5_download_cron
======================================================================

  Trigger: 00828672      Segment: 000

  BAT Trigger Time: 546331602.624   [s; MET]
      Trigger Stop: 546331603.648   [s; MET]
               UTC: 2018-04-25T06:46:21.783300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 64.4693420741548   Dec: -32.9558700086783  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.04
     Image Trigger?:     NO
     Rate S/N Ratio:     11.916375287813  [ if not an image trigger ]
     Image S/N Ratio:    7.04

  Flight Position:   [ source = BAT ]
    RA: 64.4693420741548   Dec: -32.9558700086783  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 64.4483264682538   Dec: -32.9513840411841  [deg; J2000]  
        { 04h 17m 47.6s , -32d 57' 05.0" }
         +/- 1.42082450865153 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.60795078179264 [arcmin] (formal 1-sigma fit error)
    SNR: 18.4163460042098
 
  Angular difference between Flight and Ground position is 1.091764 arcmin
 
  Partial Coding Fraction: 0.2734375    [ including projection effects ]

  Duration
     T90: 11.9039998054504 +/- 2.71227132798173
        Measured from: -0.135999798774719
                   to: 11.7680000066757     [s; relative to TRIGTIME]
     T50: 4.54399991035461 +/- 1.2959012195006
        Measured from: 1.59200012683868
                   to: 6.1360000371933     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.18800008296967     
                   to: 2.18800008296967     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.967999935150146     
                   to: 12.7280000448227     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.355796   0.640681   0.557618   0.069771
           0.043941   0.047355   0.042951   0.035347 [error]
 Peak      0.056193   0.061134   0.106359   0.032330
           0.012802   0.013906   0.013497   0.010636 [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 1.30e-07 2.66e-07 4.25e-07 1.52e-06 1.18e-06 2.34e-06   erg/cm2
              Error 1.88e-08 2.36e-08 4.14e-08 3.19e-07 1.04e-07 3.48e-07   erg/cm2
Peak flux Power-law 3.86e-01 5.69e-01 6.26e-01 1.29e+00 1.97e+00 2.87e+00   ph/cm2/s
              Error 1.41e-01 1.28e-01 1.01e-01 4.55e-01 3.34e-01 4.96e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.21e-07 2.78e-07 4.39e-07 8.36e-07 1.15e-06 1.67e-06   erg/cm2
              Error 2.14e-08 2.84e-08 4.61e-08 5.59e-07 1.13e-07 6.17e-07   erg/cm2
Peak flux Cutoff-PL 3.09e-01 5.73e-01 6.80e-01 7.56e-01 1.92e+00 2.32e+00   ph/cm2/s
              Error 1.85e-01 1.42e-01 1.07e-01 5.73e-01 3.52e-01 7.55e-01   ph/cm2/s
 
Fluence        Band 1.11e-07 2.80e-07 3.69e-07 9.85e-07 1.03e-06 1.75e-06   erg/cm2
              Error 2.22e-08 3.14e-08 4.23e-08 -------- 1.01e-07 --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.322    0.135    -      -           8.76e-03 7.04e-04   50.300 57
CPL   0.914    0.510     136.2  -42.0      1.40e-02 8.84e-03   48.330 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.863    0.284    -      -           1.72e-02 2.94e-03   70.540 57
CPL   0.203    1.302     168.5    0.0      3.17e-02 5.82e-02   69.660 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: 3.456000 sec.
T50 in the 50-300 keV band: 1.728000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   13.696   -0.968   12.728
T90    11.904   -0.136   11.768
T50     4.544    1.592    6.136
Peak    1.000    1.188    2.188

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   64.4483 -32.9514 0.0104   36.6  -62.3       1.6058    18.4  TRIG_00828672       
------------------------------------------
 
Foreground time interval of the image:
 -0.968  11.277 (delta_t =  12.245 [sec])
Background time interval of the image:
-239.624  -0.968 (delta_t = 238.656 [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   -0.968 sec. to   12.728 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32211     ( -0.13546   0.13409 )
Norm@50keV  : 8.75793E-03    ( -0.000704023   0.000703794 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.30 using 59 PHA bins.
# Reduced chi-squared =         0.8825 for     57 degrees of freedom 
# Null hypothesis probability =   7.225386e-01
 
Photon flux (15-150 keV)    in 13.7 sec: 1.04922 ( -0.0869899  0.0871248 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17939e-06 ( -1.03628e-07  1.04185e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.968 sec. to   12.728 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.914388     ( -0.557522   0.462297 )
Epeak [keV] : 136.164      ( -52.2165 -136.164 )
Norm@50keV  : 1.40135E-02    ( -0.00558249   0.0121059 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.33 using 59 PHA bins.
# Reduced chi-squared =         0.8631 for     56 degrees of freedom 
# Null hypothesis probability =   7.569268e-01
 
Photon flux (15-150 keV)    in 13.7 sec: 1.03434 ( -0.08893  0.08896 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.14727e-06 ( -1.13362e-07  1.12233e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.968 sec. to   12.728 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97725   ( -3.5971   -4.97725 )
beta        : -1.53799    ( -0.212737   0.174764 )
Epeak [keV] : 30.0290      ( -4.43691 3.97829 )
Norm@50keV   : 271.990    ( -21.536   461.029 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.09 using 59 PHA bins.
# Reduced chi-squared =         0.7107 for     55 degrees of freedom 
# Null hypothesis probability =   9.483450e-01
 
Photon flux (15-150 keV)    in 13.7 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02994e-06 ( -1.02985e-06  -9.98209e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.7209  (-1.81634  2.07643)
R^2/D10^2   : 8.48905E-02  (-0.0280281   0.0413742)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.19 using 59 PHA bins.
# Reduced chi-squared =          1.424 for     57 degrees of freedom 
# Null hypothesis probability =   1.935214e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.652e-08   1.169e-08
25- 50  2.904e-07   3.274e-08
50-150  5.766e-07   8.747e-08
15-150  9.335e-07   1.019e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-25.7949      -200)
Norm        : 4.37453       (-0.35345     0.35345)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.09 using 59 PHA bins.
# Reduced chi-squared =         0.9840 for     57 degrees of freedom 
# Null hypothesis probability =   5.093262e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.492e-07   1.438e-08
25- 50  2.870e-07   5.679e-08
50-150  6.295e-07   2.721e-07
15-150  1.066e-06   2.638e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.08461        (-1.49101      1.87434)
R1^2/D10^2  : 0.665170        (-0.316002      0.619188)
kT2 [keV]   : 32.2457        (-7.40503      17.1719)
R2^2/D10^2  : 7.33874E-03    (-0.00532163   0.0106187)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.69 using 59 PHA bins.
# Reduced chi-squared =         0.7580 for     55 degrees of freedom 
# Null hypothesis probability =   9.071979e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.242e-07   4.609e-08
25- 50  2.926e-07   8.456e-08
50-150  7.583e-07   3.552e-07
15-150  1.175e-06   4.448e-07

Peak spectrum fit

Power-law model
Time interval is from    1.188 sec. to    2.188 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.862860     ( -0.294671   0.273565 )
Norm@50keV  : 1.72055E-02    ( -0.00296988   0.00290517 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.54 using 59 PHA bins.
# Reduced chi-squared =          1.238 for     57 degrees of freedom 
# Null hypothesis probability =   1.072313e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.97481 ( -0.33313  0.335805 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.95941e-07 ( -3.20762e-08  3.21908e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.188 sec. to    2.188 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.202797     ( -1.71533   0.887959 )
Epeak [keV] : 168.513      ( -167.509 -167.509 )
Norm@50keV  : 3.17266E-02    ( -0.0173229   0.0990176 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.66 using 59 PHA bins.
# Reduced chi-squared =          1.244 for     56 degrees of freedom 
# Null hypothesis probability =   1.037270e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.91914 ( -0.35314  0.35107 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.92452e-07 ( -3.3749e-08  3.3263e-08 ) ergs/cm2
 
Band function
Time interval is from    1.188 sec. to    2.188 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -5   -5 )
beta        : -0.907850    ( -0.302526   0.308055 )
Epeak [keV] : 26.5548      ( -26.554 52.444 )
Norm@50keV   : 740.123    ( -116.139   2.99355e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.83 using 59 PHA bins.
# Reduced chi-squared =          1.270 for     55 degrees of freedom 
# Null hypothesis probability =   8.593038e-02
 
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]    : 25.5427  (-4.61394  6.52127)
R^2/D10^2   : 4.69829E-02  (-0.0234125   0.0406292)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.82 using 59 PHA bins.
# Reduced chi-squared =          1.260 for     57 degrees of freedom 
# Null hypothesis probability =   8.942969e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.264e-09   1.879e-09
25- 50  3.019e-08   8.055e-09
50-150  1.456e-07   4.029e-08
15-150  1.810e-07   4.590e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-35.3314      -200)
Norm        : 8.18166       (-1.4004     1.4004)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.50 using 59 PHA bins.
# Reduced chi-squared =          1.535 for     57 degrees of freedom 
# Null hypothesis probability =   5.802354e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.039e-08   1.184e-08
25- 50  3.922e-08   2.231e-08
50-150  8.602e-08   4.852e-08
15-150  1.456e-07   8.355e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.09508        (-3.60093      20.3399)
R1^2/D10^2  : 2.85857        (-3.00902      147.443)
kT2 [keV]   : 28.6279        (-6.00237      -28.5252)
R2^2/D10^2  : 3.17152E-02    (-0.0158319   0.0384743)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.85 using 59 PHA bins.
# Reduced chi-squared =          1.252 for     55 degrees of freedom 
# Null hypothesis probability =   9.919090e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.168e-08   6.525e-09
25- 50  3.042e-08   1.441e-08
50-150  1.492e-07   6.394e-08
15-150  1.913e-07   8.364e-08
Plot creation:
Thu Apr 26 07:13:28 EDT 2018