batgrbproduct analysis for trigger=767284

batgrbproduct Analysis for Trigger=767284

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Aug 11 16:55:15 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger767284/GCN5_download_cron
======================================================================

  Trigger: 00767284      Segment: 000

  BAT Trigger Time: 524095320.576   [s; MET]
      Trigger Stop: 524095321.6   [s; MET]
               UTC: 2017-08-10T22:01:41.068440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 187.950444369931   Dec: 3.64679568014333  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.65
     Image Trigger?:     NO
     Rate S/N Ratio:     23.3238075793812  [ if not an image trigger ]
     Image S/N Ratio:    9.65

  Flight Position:   [ source = BAT ]
    RA: 187.950444369931   Dec: 3.64679568014333  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 187.928511932623   Dec: 3.66397068362815  [deg; J2000]  
        { 12h 31m 42.8s , +03d 39' 50.3" }
         +/- 1.00069096274613 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.302802855334615 [arcmin] (formal 1-sigma fit error)
    SNR: 30.3871409582277
 
  Angular difference between Flight and Ground position is 1.669313 arcmin
 
  Partial Coding Fraction: 0.9375    [ including projection effects ]

  Duration
     T90: 152.251999914646 +/- 21.6464926531137
        Measured from: -17.7759998440742
                   to: 134.476000070572     [s; relative to TRIGTIME]
     T50: 73.6679999232292 +/- 6.58781451505593
        Measured from: 7.10800015926361
                   to: 80.7760000824928     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.15200001001358     
                   to: 1.15200001001358     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -24.3319999575615     
                   to: 157.740000009537     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.650495   2.528317   2.178488   0.684521
           0.078812   0.083059   0.074628   0.066037 [error]
 Peak      0.023480   0.057364   0.053161   0.041127
           0.006313   0.007228   0.006861   0.005865 [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 4.76e-07 1.03e-06 1.74e-06 6.75e-06 4.77e-06 9.99e-06   erg/cm2
              Error 3.68e-08 4.53e-08 7.46e-08 6.92e-07 1.88e-07 7.26e-07   erg/cm2
Peak flux Power-law 1.89e-01 3.20e-01 4.11e-01 1.06e+00 1.21e+00 1.98e+00   ph/cm2/s
              Error 6.35e-02 6.46e-02 5.17e-02 3.22e-01 1.62e-01 3.12e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.79e-07 1.03e-06 1.74e-06 6.65e-06 4.76e-06 9.88e-06   erg/cm2
              Error 3.70e-08 4.55e-08 7.50e-08 -------- -------- 8.96e-07   erg/cm2
Peak flux Cutoff-PL 1.92e-01 3.23e-01 4.11e-01 1.04e+00 1.22e+00 1.96e+00   ph/cm2/s
              Error -------- 6.47e-02 -------- -------- 1.62e-01 --------   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 7.86e-02 1.50e-01 5.93e-02 2.26e-03 2.90e-01 2.90e-01   ph/cm2/s
              Error 9.58e-02 -------- 5.83e-02 -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.240    0.070    -      -           2.61e-03 9.47e-05   59.810 57
CPL   1.236    0.112    9999.1    0.0      2.62e-03 1.52e-04   59.900 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.637    0.256    -      -           1.04e-02 1.52e-03   87.420 57
CPL   0.644    0.259    9999.4    0.0      1.05e-02 3.53e-03   87.480 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: 143.744000 sec.
T50 in the 50-300 keV band: 56.448000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  182.072  -24.332  157.740
T90   152.252  -17.776  134.476
T50    73.668    7.108   80.776
Peak    1.000    0.152    1.152

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  187.9285  +3.6640 0.0063   24.4 -166.7       2.5211    30.4  TRIG_00767284       
------------------------------------------
 
Foreground time interval of the image:
-24.332  15.425 (delta_t =  39.757 [sec])
Background time interval of the image:
-239.576 -24.332 (delta_t = 215.244 [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  -24.332 sec. to  157.740 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23985     ( -0.0702472   0.0697923 )
Norm@50keV  : 2.60992E-03    ( -9.47281e-05   9.46752e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.81 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     57 degrees of freedom 
# Null hypothesis probability =   3.741605e-01
 
Photon flux (15-150 keV)    in 182.1 sec: 0.308182 ( -0.0119444  0.0119983 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.76925e-06 ( -1.87077e-07  1.88002e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -24.332 sec. to  157.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23572     ( -0.106255   0.117491 )
Epeak [keV] : 9999.12      ( -9999.15 -9999.15 )
Norm@50keV  : 2.62158E-03    ( -9.47661e-05   0.000208555 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.90 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     56 degrees of freedom 
# Null hypothesis probability =   3.361362e-01
 
Photon flux (15-150 keV)    in 182.1 sec: 0.308125 ( -0.011815  0.011896 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.76361e-06 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -24.332 sec. to  157.740 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.479215   ( 0.815282   0.815282 )
beta        : -1.25445    ( -0.0913259   0.0771091 )
Epeak [keV] : 53.5917      ( -53.4416 252.232 )
Norm@50keV   : 9.09567E-03    ( -0.00921774   170572 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.48 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     55 degrees of freedom 
# Null hypothesis probability =   3.159675e-01
 
Photon flux (15-150 keV)    in 182.1 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]    : 19.7481  (  )
R^2/D10^2   : 1.40044E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         266.74 using 59 PHA bins.
# Reduced chi-squared =         4.6797 for     57 degrees of freedom 
# Null hypothesis probability =   7.206468e-29
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.927e-07   1.488e-08
25- 50  9.517e-07   5.244e-08
50-150  2.746e-06   1.739e-07
15-150  3.891e-06   1.848e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.361       (      )
Norm        : 1.29723       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         129.17 using 59 PHA bins.
# Reduced chi-squared =         2.2662 for     57 degrees of freedom 
# Null hypothesis probability =   1.599675e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.882e-07   2.367e-08
25- 50  1.132e-06   4.634e-08
50-150  2.482e-06   9.651e-08
15-150  4.201e-06   1.621e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.18530        (-0.826426      0.901115)
R1^2/D10^2  : 0.181856        (-0.0532521      0.0795518)
kT2 [keV]   : 40.4264        (-5.75205      8.70856)
R2^2/D10^2  : 1.25627E-03    (-0.000519787   0.000721908)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.65 using 59 PHA bins.
# Reduced chi-squared =         0.8846 for     55 degrees of freedom 
# Null hypothesis probability =   7.143304e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.558e-07   5.326e-08
25- 50  1.070e-06   9.032e-08
50-150  3.382e-06   5.035e-07
15-150  4.908e-06   6.164e-07

Peak spectrum fit

Power-law model
Time interval is from    0.152 sec. to    1.152 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.636995     ( -0.268496   0.243215 )
Norm@50keV  : 1.04324E-02    ( -0.00155621   0.00149304 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.42 using 59 PHA bins.
# Reduced chi-squared =          1.534 for     57 degrees of freedom 
# Null hypothesis probability =   5.891228e-03
 
Photon flux (15-150 keV)    in 1 sec: 1.21292 ( -0.16184  0.16249 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31087e-07 ( -1.72964e-08  1.73494e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.152 sec. to    1.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.643631     ( -0.285329   0.231857 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.05246E-02    ( -0.00160093   0.00545151 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.48 using 59 PHA bins.
# Reduced chi-squared =          1.562 for     56 degrees of freedom 
# Null hypothesis probability =   4.526609e-03
 
Photon flux (15-150 keV)    in 1 sec: 1.21548 ( -0.16487  0.15976 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31266e-07 ( -1.7452e-08  1.6686e-08 ) ergs/cm2
 
Band function
Time interval is from    0.152 sec. to    1.152 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.763256   ( 0.763256   0.763256 )
beta        : -0.637007    ( -0.243164   0.268507 )
Epeak [keV] : 17.0940      ( -17.094 -17.094 )
Norm@50keV   : 1.48842E-02    ( -0.00583962   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.42 using 59 PHA bins.
# Reduced chi-squared =          1.590 for     55 degrees of freedom 
# Null hypothesis probability =   3.525443e-03
 
Photon flux (15-150 keV)    in 1 sec: 0.290423 (    ) 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]    : 31.4329  (-7.1294  11.8015)
R^2/D10^2   : 1.60257E-02  (-0.0159724   0.0174453)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         102.96 using 59 PHA bins.
# Reduced chi-squared =         1.8063 for     57 degrees of freedom 
# Null hypothesis probability =   1.854656e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.406e-09   7.040e-10
25- 50  1.512e-08   3.931e-09
50-150  1.035e-07   2.450e-08
15-150  1.210e-07   3.139e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (      )
Norm        : 4.74848       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         127.07 using 59 PHA bins.
# Reduced chi-squared =         2.2293 for     57 degrees of freedom 
# Null hypothesis probability =   2.946067e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.182e-08   6.695e-09
25- 50  2.274e-08   1.296e-08
50-150  4.988e-08   2.768e-08
15-150  8.445e-08   4.711e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.60 using 59 PHA bins.
#Fit statistic : Chi-Squared =          81.57 using 59 PHA bins.
#Fit statistic : Chi-Squared =          80.60 using 59 PHA bins.
#Fit statistic : Chi-Squared =          80.58 using 59 PHA bins.
# Reduced chi-squared =          1.484 for     55 degrees of freedom 
# Reduced chi-squared =          1.483 for     55 degrees of freedom 
# Reduced chi-squared =          1.465 for     55 degrees of freedom 
# Reduced chi-squared =          1.465 for     55 degrees of freedom 
# Null hypothesis probability =   1.144426e-02
# Null hypothesis probability =   1.149767e-02
# Null hypothesis probability =   1.385172e-02
# Null hypothesis probability =   1.388492e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.405e-09   3.727e-09
25- 50  2.148e-08   1.217e-08
50-150  1.069e-07   9.320e-08
15-150  1.348e-07   1.130e-07
Plot creation:
Fri Aug 11 17:27:17 EDT 2017