batgrbproduct analysis for trigger=768939

batgrbproduct Analysis for Trigger=768939

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Aug 23 11:33:55 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger768939/GCN5_download_cron
======================================================================

  Trigger: 00768939      Segment: 000

  BAT Trigger Time: 525085930.624   [s; MET]
      Trigger Stop: 525085934.72   [s; MET]
               UTC: 2017-08-22T09:11:51.057700    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 94.3820902752538   Dec: 55.0186424017826  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.48
     Image Trigger?:     NO
     Rate S/N Ratio:     28.6705423736629  [ if not an image trigger ]
     Image S/N Ratio:    15.48

  Flight Position:   [ source = BAT ]
    RA: 94.3820902752538   Dec: 55.0186424017826  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 94.3752590695983   Dec: 54.9998193399018  [deg; J2000]  
        { 06h 17m 30.1s , +54d 59' 59.3" }
         +/- 2.07485973925034 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.719045659655939 [arcmin] (formal 1-sigma fit error)
    SNR: 10.7220373952185
 
  Angular difference between Flight and Ground position is 1.153582 arcmin
 
  Partial Coding Fraction: 0.1210938    [ including projection effects ]

  Duration
     T90: 64 +/- 16
        Measured from: -15.6239998936653
                   to: 48.3760001063347     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: 0.376000106334686
                   to: 32.3760001063347     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.8759999871254     
                   to: 8.8759999871254     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.6240000128746     
                   to: 64.3759999871254     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.159130   4.048928   2.559787   0.386297
           0.172534   0.182217   0.154385   0.124786 [error]
 Peak      0.131376   0.189485   0.142862  -0.010494
           0.024043   0.025495   0.022658   0.014923 [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 1.18e-06 1.81e-06 2.07e-06 4.55e-06 6.41e-06 9.61e-06   erg/cm2
              Error 1.03e-07 9.80e-08 1.54e-07 7.05e-07 3.68e-07 8.37e-07   erg/cm2
Peak flux Power-law 1.59e+00 1.42e+00 8.70e-01 8.08e-01 4.23e+00 4.69e+00   ph/cm2/s
              Error 3.74e-01 2.21e-01 1.78e-01 3.18e-01 6.53e-01 7.17e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.10e-06 1.90e-06 2.12e-06 2.34e-06 6.21e-06 7.46e-06   erg/cm2
              Error 1.20e-07 1.20e-07 1.67e-07 1.19e-06 4.00e-07 1.24e-06   erg/cm2
Peak flux Cutoff-PL 1.41e+00 1.55e+00 9.34e-01 3.71e-01 4.14e+00 4.26e+00   ph/cm2/s
              Error 4.35e-01 2.78e-01 2.08e-01 4.08e-01 6.63e-01 7.62e-01   ph/cm2/s
 
Fluence        Band 1.06e-06 1.93e-06 2.03e-06 3.88e-06 6.26e-06 8.92e-06   erg/cm2
              Error 1.32e-07 1.38e-07 1.62e-07 -------- 3.84e-07 --------   erg/cm2
Peak flux      Band 1.42e+00 1.53e+00 9.36e-01 4.12e-01 4.15e+00 4.30e+00   ph/cm2/s
              Error 3.14e-01 -------- -------- -------- 6.38e-01 7.44e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.801    0.094    -      -           8.71e-03 4.89e-04   64.220 57
CPL   1.329    0.376      69.0   37.4      1.53e-02 7.00e-03   59.010 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.707    0.249    -      -           3.17e-02 5.18e-03   47.580 57
CPL   0.905    1.041      66.8  -24.8      8.31e-02 1.65e-01   45.460 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: 58.496000 sec.
T50 in the 50-300 keV band: 40.448000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   80.000  -15.624   64.376
T90    64.000  -15.624   48.376
T50    32.000    0.376   32.376
Peak    1.000    7.876    8.876

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   94.3753 +54.9998 0.0181   41.8  -61.6      11.2888    10.7  TRIG_00768939       
------------------------------------------
 
Foreground time interval of the image:
-15.624  64.376 (delta_t =  80.000 [sec])
Background time interval of the image:
-239.624 -210.394 (delta_t =  29.230 [sec])
-209.624 -15.624 (delta_t = 194.000 [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
Time interval is from  -15.624 sec. to   64.376 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.80119     ( -0.093205   0.0944637 )
Norm@50keV  : 8.70638E-03    ( -0.000490506   0.000487862 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.22 using 59 PHA bins.
# Reduced chi-squared =          1.127 for     57 degrees of freedom 
# Null hypothesis probability =   2.383795e-01
 
Photon flux (15-150 keV)    in 80 sec: 1.20028 ( -0.066546  0.0666785 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.41183e-06 ( -3.67152e-07  3.68536e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.624 sec. to   64.376 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32865     ( -0.392091   0.359209 )
Epeak [keV] : 69.0355      ( -13.549 61.3123 )
Norm@50keV  : 1.52675E-02    ( -0.00518683   0.00881264 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.01 using 59 PHA bins.
# Reduced chi-squared =          1.054 for     56 degrees of freedom 
# Null hypothesis probability =   3.661658e-01
 
Photon flux (15-150 keV)    in 80 sec: 1.17234 ( -0.06959  0.06968 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.20865e-06 ( -3.99768e-07  4.0004e-07 ) ergs/cm2
 
Band function
Time interval is from  -15.624 sec. to   64.376 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32860   ( -0.315223   0.270621 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 69.0210      ( -13.5418 61.3043 )
Norm@50keV   : 1.52665E-02    ( -0.00518747   0.00881766 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.01 using 59 PHA bins.
# Reduced chi-squared =          1.073 for     55 degrees of freedom 
# Null hypothesis probability =   3.312621e-01
 
Photon flux (15-150 keV)    in 80 sec: 1.16985 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.25969e-06 ( -6.25913e-06  -3.83136e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.7952  (  )
R^2/D10^2   : 0.223515  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         141.60 using 59 PHA bins.
# Reduced chi-squared =         2.4843 for     57 degrees of freedom 
# Null hypothesis probability =   3.769873e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.209e-07   6.392e-08
25- 50  2.102e-06   1.412e-07
50-150  2.155e-06   2.388e-07
15-150  4.878e-06   2.968e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 109.992       (-21.0579      25.3099)
Norm        : 5.13375       (-0.366319     0.455311)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.07 using 59 PHA bins.
# Reduced chi-squared =          1.036 for     57 degrees of freedom 
# Null hypothesis probability =   3.997393e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.073e-06   9.920e-08
25- 50  1.889e-06   1.268e-07
50-150  3.225e-06   8.796e-07
15-150  6.186e-06   9.936e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.54991        (-0.956995      1.04077)
R1^2/D10^2  : 1.80064        (-0.727125      1.41059)
kT2 [keV]   : 22.8091        (-3.23894      4.62521)
R2^2/D10^2  : 1.94763E-02    (-0.00996767   0.0165398)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.69 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     55 degrees of freedom 
# Null hypothesis probability =   4.487429e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.069e-06   1.864e-07
25- 50  1.902e-06   2.580e-07
50-150  3.239e-06   6.856e-07
15-150  6.211e-06   1.065e-06

Peak spectrum fit

Power-law model
Time interval is from    7.876 sec. to    8.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70703     ( -0.243973   0.254734 )
Norm@50keV  : 3.17417E-02    ( -0.00521574   0.00513632 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.58 using 59 PHA bins.
# Reduced chi-squared =         0.8348 for     57 degrees of freedom 
# Null hypothesis probability =   8.085692e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.22606 ( -0.652964  0.653781 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.93731e-07 ( -4.97344e-08  5.02893e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    7.876 sec. to    8.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.904699     ( -1.17934   0.901973 )
Epeak [keV] : 66.8377      ( -17.3318 -66.8383 )
Norm@50keV  : 8.31020E-02    ( -0.0831006   0.246579 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.46 using 59 PHA bins.
# Reduced chi-squared =         0.8117 for     56 degrees of freedom 
# Null hypothesis probability =   8.419947e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.14078 ( -0.66294  0.66263 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.83324e-07 ( -5.0972e-08  5.1912e-08 ) ergs/cm2
 
Band function
Time interval is from    7.876 sec. to    8.876 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.905247   ( -0.727663   1.30693 )
beta        : -10.0000    ( 10   2.8777e-13 )
Epeak [keV] : 66.8419      ( -19.6593 -66.8419 )
Norm@50keV   : 8.30415E-02    ( -0.0830411   0.246751 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.46 using 59 PHA bins.
# Reduced chi-squared =         0.8265 for     55 degrees of freedom 
# Null hypothesis probability =   8.170324e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.15209 ( 2.84791  -0.63353 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.86421e-07 ( -2.86414e-07  -5.4196e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.7174  (-2.30587  2.70773)
R^2/D10^2   : 0.662117  (-0.321364   0.625869)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.06 using 59 PHA bins.
# Reduced chi-squared =         0.9485 for     57 degrees of freedom 
# Null hypothesis probability =   5.859591e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.636e-08   7.780e-09
25- 50  9.606e-08   2.224e-08
50-150  1.178e-07   3.783e-08
15-150  2.402e-07   5.135e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 130.516       (-54.85      -128.81)
Norm        : 17.8691       (-3.10325     4.039)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.89 using 59 PHA bins.
# Reduced chi-squared =         0.8051 for     57 degrees of freedom 
# Null hypothesis probability =   8.539612e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.635e-08   1.345e-08
25- 50  8.410e-08   3.805e-08
50-150  1.562e-07   9.787e-08
15-150  2.867e-07   1.521e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.91439        (-2.68257      3.69547)
R1^2/D10^2  : 7.90189        (-6.26885      84.1461)
kT2 [keV]   : 20.2861        (-5.48409      12.8779)
R2^2/D10^2  : 0.124229    (-0.107039   0.323868)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.84 using 59 PHA bins.
# Reduced chi-squared =         0.8153 for     55 degrees of freedom 
# Null hypothesis probability =   8.342186e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.576e-08   2.687e-08
25- 50  8.402e-08   4.439e-08
50-150  1.536e-07   8.885e-08
15-150  2.834e-07   1.483e-07
Plot creation:
Wed Aug 23 11:52:04 EDT 2017