batgrbproduct Analysis for Trigger=727541

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Dec 21 16:57:37 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger727541/GCN5_download_cron
======================================================================

  Trigger: 00727541      Segment: 000

  BAT Trigger Time: 503866136.64   [s; MET]
      Trigger Stop: 503866137.152   [s; MET]
               UTC: 2016-12-19T18:48:39.308260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 91.7173166987563   Dec: -26.7900102183723  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.78
     Image Trigger?:     NO
     Rate S/N Ratio:     14.5258390463339  [ if not an image trigger ]
     Image S/N Ratio:    7.78

  Flight Position:   [ source = BAT ]
    RA: 91.7173166987563   Dec: -26.7900102183723  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 91.7164798412302   Dec: -26.8008645218883  [deg; J2000]  
        { 06h 06m 52.0s , -26d 48' 03.1" }
         +/- 0.874118001329545 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.269127435577625 [arcmin] (formal 1-sigma fit error)
    SNR: 36.8629185818629
 
  Angular difference between Flight and Ground position is 0.652799 arcmin
 
  Partial Coding Fraction: 0.5    [ including projection effects ]

  Duration
     T90: 6.93599992990494 +/- 0.791979781306962
        Measured from: 0.0440001487731934
                   to: 6.98000007867813     [s; relative to TRIGTIME]
     T50: 2.45599991083145 +/- 0.372086019127962
        Measured from: 1.42400014400482
                   to: 3.88000005483627     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.55599999427795     
                   to: 2.55599999427795     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.53600001335144     
                   to: 8.3759999871254     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.777341   1.045483   0.618830   0.132140
           0.034652   0.036976   0.031327   0.023587 [error]
 Peak      0.160397   0.249174   0.164201   0.046898
           0.013265   0.014500   0.012562   0.008832 [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 2.95e-07 4.41e-07 4.91e-07 1.04e-06 1.54e-06 2.26e-06   erg/cm2
              Error 2.16e-08 1.98e-08 3.05e-08 1.35e-07 7.25e-08 1.61e-07   erg/cm2
Peak flux Power-law 1.95e+00 1.78e+00 1.12e+00 1.08e+00 5.30e+00 5.93e+00   ph/cm2/s
              Error 2.17e-01 1.27e-01 9.98e-02 1.89e-01 3.72e-01 4.05e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.70e-07 4.64e-07 5.02e-07 4.86e-07 1.48e-06 1.72e-06   erg/cm2
              Error 2.61e-08 2.48e-08 3.33e-08 2.20e-07 8.19e-08 2.33e-07   erg/cm2
Peak flux Cutoff-PL 1.72e+00 1.93e+00 1.18e+00 4.72e-01 5.15e+00 5.31e+00   ph/cm2/s
              Error 2.56e-01 1.65e-01 1.15e-01 2.60e-01 3.84e-01 4.59e-01   ph/cm2/s
 
Fluence        Band 2.56e-07 4.77e-07 4.80e-07 7.93e-07 1.48e-06 2.01e-06   erg/cm2
              Error 2.91e-08 -------- -------- -------- 7.82e-08 --------   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    1.843    0.080    -      -           1.88e-02 8.76e-04   53.740 57
CPL   1.296    0.351      62.1   17.2      3.60e-02 1.54e-02   45.690 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.664    0.114    -      -           4.04e-02 2.88e-03   91.020 57
CPL   0.866    0.558      67.9   25.9      1.06e-01 8.01e-02   83.760 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: 6.784000 sec.
T50 in the 50-300 keV band: 2.112000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.912   -0.536    8.376
T90     6.936    0.044    6.980
T50     2.456    1.424    3.880
Peak    1.000    1.556    2.556

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   91.7165 -26.8009 0.0052   39.4  174.1       2.6848    36.9  TRIG_00727541       
------------------------------------------
 
Foreground time interval of the image:
 -0.536   8.376 (delta_t =   8.912 [sec])
Background time interval of the image:
-239.640  -0.536 (delta_t = 239.104 [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   -0.536 sec. to    8.376 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84314     ( -0.0790443   0.0800451 )
Norm@50keV  : 1.87948E-02    ( -0.000877824   0.000873794 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.74 using 59 PHA bins.
# Reduced chi-squared =         0.9429 for     57 degrees of freedom 
# Null hypothesis probability =   5.980095e-01
 
Photon flux (15-150 keV)    in 8.912 sec: 2.63447 ( -0.122256  0.122553 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.54029e-06 ( -7.23848e-08  7.25891e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.536 sec. to    8.376 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29577     ( -0.36556   0.336611 )
Epeak [keV] : 62.0860      ( -9.34061 24.9721 )
Norm@50keV  : 3.59935E-02    ( -0.0116405   0.0192559 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.69 using 59 PHA bins.
# Reduced chi-squared =         0.8159 for     56 degrees of freedom 
# Null hypothesis probability =   8.358475e-01
 
Photon flux (15-150 keV)    in 8.912 sec: 2.55399 ( -0.13083  0.13121 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.47912e-06 ( -8.18924e-08  8.183e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.536 sec. to    8.376 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.585892   ( -0.734042   1.69717 )
beta        : -2.09454    ( 2.09911   0.179856 )
Epeak [keV] : 43.3727      ( -5.56515 25.1937 )
Norm@50keV   : 0.102022    ( -0.103759   1.03032 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.37 using 59 PHA bins.
# Reduced chi-squared =         0.7885 for     55 degrees of freedom 
# Null hypothesis probability =   8.715460e-01
 
Photon flux (15-150 keV)    in 8.912 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.48387e-06 ( -1.4838e-06  -7.81493e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.3562  (  )
R^2/D10^2   : 0.552648  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         139.66 using 59 PHA bins.
# Reduced chi-squared =         2.4503 for     57 degrees of freedom 
# Null hypothesis probability =   6.861135e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.593e-07   1.332e-08
25- 50  5.188e-07   2.714e-08
50-150  4.854e-07   5.022e-08
15-150  1.164e-06   5.748e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 98.0312       (-14.3238      18.6148)
Norm        : 11.5849       (-0.759451     0.828053)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.55 using 59 PHA bins.
# Reduced chi-squared =         0.7990 for     57 degrees of freedom 
# Null hypothesis probability =   8.623486e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.698e-07   2.264e-08
25- 50  4.647e-07   2.745e-08
50-150  7.445e-07   1.984e-07
15-150  1.479e-06   2.063e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.46583        (-1.09963      1.11304)
R1^2/D10^2  : 2.52093        (-0.891974      1.71435)
kT2 [keV]   : 24.2594        (-4.25399      7.14748)
R2^2/D10^2  : 2.97429E-02    (-0.0185927   0.0361103)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.66 using 59 PHA bins.
# Reduced chi-squared =         0.8666 for     55 degrees of freedom 
# Null hypothesis probability =   7.481981e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.416e-07   3.654e-08
25- 50  4.848e-07   5.356e-08
50-150  7.424e-07   2.050e-07
15-150  1.469e-06   2.928e-07

Peak spectrum fit

Power-law model
Time interval is from    1.556 sec. to    2.556 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66426     ( -0.11277   0.114397 )
Norm@50keV  : 4.03851E-02    ( -0.00288844   0.00287429 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.02 using 59 PHA bins.
# Reduced chi-squared =          1.597 for     57 degrees of freedom 
# Null hypothesis probability =   2.806352e-03
 
Photon flux (15-150 keV)    in 1 sec: 5.29836 ( -0.371955  0.372416 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75076e-07 ( -2.81243e-08  2.82558e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.556 sec. to    2.556 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.865924     ( -0.596558   0.519914 )
Epeak [keV] : 67.9285      ( -12.2047 39.6416 )
Norm@50keV  : 0.106201    ( -0.0489235   0.111262 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          83.76 using 59 PHA bins.
# Reduced chi-squared =          1.496 for     56 degrees of freedom 
# Null hypothesis probability =   9.527004e-03
 
Photon flux (15-150 keV)    in 1 sec: 5.15490 ( -0.38418  0.38393 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.55743e-07 ( -3.1361e-08  3.1308e-08 ) ergs/cm2
 
Band function
Time interval is from    1.556 sec. to    2.556 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.642220   ( -0.981915   -0.0168502 )
beta        : -2.03156    ( -0.51452   0.297714 )
Epeak [keV] : 41.9356      ( -17.1048 21.0832 )
Norm@50keV   : 1.00537    ( -0.970988   656.152 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.70 using 59 PHA bins.
# Reduced chi-squared =          1.449 for     55 degrees of freedom 
# Null hypothesis probability =   1.639496e-02
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.59505e-07 ( -3.59498e-07  -2.9969e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.9897  (-0.983808  1.07587)
R^2/D10^2   : 1.00471  (-0.256025   0.337503)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         113.02 using 59 PHA bins.
# Reduced chi-squared =         1.9829 for     57 degrees of freedom 
# Null hypothesis probability =   1.443418e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.596e-08   4.575e-09
25- 50  1.237e-07   1.030e-08
50-150  1.319e-07   1.940e-08
15-150  2.916e-07   2.275e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 143.020       (-36.9842      54.3589)
Norm        : 22.0810       (-1.75746     2.13054)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.30 using 59 PHA bins.
# Reduced chi-squared =          1.497 for     57 degrees of freedom 
# Null hypothesis probability =   8.959053e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.693e-08   5.290e-09
25- 50  1.048e-07   1.084e-08
50-150  2.027e-07   7.373e-08
15-150  3.644e-07   8.345e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.61985        (-1.90262      1.67695)
R1^2/D10^2  : 2.40182        (-0.885793      2.02241)
kT2 [keV]   : 39.7404        (-16.6643      -39.7526)
R2^2/D10^2  : 1.11309E-02    (-0.0103976   0.0687001)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.80 using 59 PHA bins.
# Reduced chi-squared =          1.451 for     55 degrees of freedom 
# Null hypothesis probability =   1.609186e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.690e-08   8.540e-09
25- 50  1.204e-07   2.265e-08
50-150  1.960e-07   8.334e-08
15-150  3.633e-07   1.047e-07
Plot creation:
Wed Dec 21 17:12:48 EST 2016