batgrbproduct analysis for trigger=766081

batgrbproduct Analysis for Trigger=766081

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Aug  4 08:24:18 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger766081/batgroup_hand_proc
======================================================================

  Trigger: 00766081      Segment: 000

  BAT Trigger Time: 523474246.644   [s; MET]
      Trigger Stop: 523474246.708   [s; MET]
               UTC: 2017-08-03T17:30:27.173280    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 174.949880933376   Dec: -16.3107712626632  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.73
     Image Trigger?:     NO
     Rate S/N Ratio:     32.6036807738022  [ if not an image trigger ]
     Image S/N Ratio:    10.73

  Flight Position:   [ source = BAT ]
    RA: 174.949880933376   Dec: -16.3107712626632  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 174.946586554506   Dec: -16.3116250362  [deg; J2000]  
        { 11h 39m 47.2s , -16d 18' 41.9" }
         +/- 0.774294954389637 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.262106307051478 [arcmin] (formal 1-sigma fit error)
    SNR: 43.8352493257324
 
  Angular difference between Flight and Ground position is 0.196502 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 3.81599998474121 +/- 0.233649318060114
        Measured from: -0.180000007152557
                   to: 3.63599997758865     [s; relative to TRIGTIME]
     T50: 1.60799992084503 +/- 0.096166528707193
        Measured from: 0.216000020503998
                   to: 1.82399994134903     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.11599999666214     
                   to: 0.88400000333786     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.691999971866608     
                   to: 4.14399999380112     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.354844   0.589780   0.491442   0.100944
           0.016030   0.017189   0.015593   0.011495 [error]
 Peak      0.161465   0.295090   0.290162   0.069509
           0.008432   0.010057   0.009911   0.006551 [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 1.21e-07 2.37e-07 3.63e-07 1.21e-06 1.02e-06 1.93e-06   erg/cm2
              Error 7.84e-09 9.24e-09 1.51e-08 1.11e-07 3.77e-08 1.21e-07   erg/cm2
Peak flux Power-law 1.70e+00 2.06e+00 1.81e+00 2.72e+00 6.52e+00 8.29e+00   ph/cm2/s
              Error 1.24e-01 9.25e-02 7.74e-02 2.43e-01 2.56e-01 3.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.02e-07 2.50e-07 3.87e-07 5.15e-07 9.75e-07 1.25e-06   erg/cm2
              Error 9.91e-09 1.06e-08 1.79e-08 1.46e-07 4.10e-08 1.48e-07   erg/cm2
Peak flux Cutoff-PL 1.45e+00 2.14e+00 1.95e+00 1.55e+00 6.36e+00 7.09e+00   ph/cm2/s
              Error 1.56e-01 1.03e-01 9.92e-02 3.50e-01 2.63e-01 4.39e-01   ph/cm2/s
 
Fluence        Band 1.01e-07 2.49e-07 3.86e-07 5.32e-07 9.75e-07 1.27e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    1.388    0.060    -      -           2.17e-02 7.47e-04   71.100 57
CPL   0.650    0.281     100.2   20.5      4.75e-02 1.41e-02   47.530 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.191    0.064    -      -           5.57e-02 2.11e-03   66.690 57
CPL   0.548    0.281     128.5   37.4      1.09e-01 3.13e-02   49.100 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: 3.520000 sec.
T50 in the 50-300 keV band: 1.280000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    4.836   -0.692    4.144
T90     3.816   -0.180    3.636
T50     1.608    0.216    1.824
Peak    1.000   -0.116    0.884

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  174.9466 -16.3116 0.0044   26.3   -9.8       1.5421    43.8  TRIG_00766081       
------------------------------------------
 
Foreground time interval of the image:
 -0.692   4.144 (delta_t =   4.836 [sec])
Background time interval of the image:
-18.943  -0.692 (delta_t =  18.251 [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   -0.692 sec. to    4.144 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38831     ( -0.0602939   0.0603414 )
Norm@50keV  : 2.16865E-02    ( -0.000746749   0.000746716 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.10 using 59 PHA bins.
# Reduced chi-squared =          1.247 for     57 degrees of freedom 
# Null hypothesis probability =   9.908809e-02
 
Photon flux (15-150 keV)    in 4.836 sec: 2.63409 ( -0.0960883  0.0962669 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.01583e-06 ( -3.7615e-08  3.76933e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.692 sec. to    4.144 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.650266     ( -0.289091   0.271911 )
Epeak [keV] : 100.165      ( -14.0344 26.9796 )
Norm@50keV  : 4.75135E-02    ( -0.0116489   0.0165516 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.53 using 59 PHA bins.
# Reduced chi-squared =         0.8487 for     56 degrees of freedom 
# Null hypothesis probability =   7.826335e-01
 
Photon flux (15-150 keV)    in 4.836 sec: 2.52796 ( -0.10214  0.10267 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.75489e-07 ( -4.09899e-08  4.09126e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.692 sec. to    4.144 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.655973   ( -0.26545   0.202732 )
beta        : -9.37062    ( 9.37157   19.3716 )
Epeak [keV] : 100.633      ( -9.14403 26.2911 )
Norm@50keV   : 4.71892E-02    ( -0.0108949   0.00570089 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.53 using 59 PHA bins.
# Reduced chi-squared =         0.8642 for     55 degrees of freedom 
# Null hypothesis probability =   7.527078e-01
 
Photon flux (15-150 keV)    in 4.836 sec: 2.52888 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.74875e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 17.3051  (  )
R^2/D10^2   : 0.189260  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         145.94 using 59 PHA bins.
# Reduced chi-squared =         2.5604 for     57 degrees of freedom 
# Null hypothesis probability =   9.711963e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.554e-08   3.772e-09
25- 50  2.492e-07   1.095e-08
50-150  5.358e-07   3.240e-08
15-150  8.406e-07   3.143e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-7.59394      -200)
Norm        : 11.0027       (-0.379526     0.379526)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.35 using 59 PHA bins.
# Reduced chi-squared =          1.427 for     57 degrees of freedom 
# Null hypothesis probability =   1.879428e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.325e-07   5.247e-09
25- 50  2.549e-07   9.164e-09
50-150  5.591e-07   1.959e-08
15-150  9.466e-07   3.288e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.76169        (-1.48128      1.65305)
R1^2/D10^2  : 1.42319        (-0.599215      1.39094)
kT2 [keV]   : 24.8449        (-2.75197      4.2564)
R2^2/D10^2  : 4.39169E-02    (-0.0204087   0.0261558)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.19 using 59 PHA bins.
# Reduced chi-squared =         0.9308 for     55 degrees of freedom 
# Null hypothesis probability =   6.208316e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.609e-08   1.564e-08
25- 50  2.508e-07   2.626e-08
50-150  6.208e-07   6.795e-08
15-150  9.677e-07   9.841e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.116 sec. to    0.884 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19081     ( -0.063747   0.0636602 )
Norm@50keV  : 5.56542E-02    ( -0.00210813   0.00210797 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.69 using 59 PHA bins.
# Reduced chi-squared =          1.170 for     57 degrees of freedom 
# Null hypothesis probability =   1.780955e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.52434 ( -0.255706  0.255928 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.66108e-07 ( -2.33782e-08  2.34222e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.116 sec. to    0.884 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.547585     ( -0.289347   0.272054 )
Epeak [keV] : 128.543      ( -23.2809 51.5088 )
Norm@50keV  : 0.108535    ( -0.0260249   0.0365605 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.10 using 59 PHA bins.
# Reduced chi-squared =         0.8768 for     56 degrees of freedom 
# Null hypothesis probability =   7.314665e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.36321 ( -0.26331  0.2636 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.52929e-07 ( -2.4601e-08  2.4534e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.116 sec. to    0.884 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.547605   ( -0.182012   0.530019 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 128.529      ( -18.4119 51.5055 )
Norm@50keV   : 0.108531    ( -0.0260708   0.0365782 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.10 using 59 PHA bins.
# Reduced chi-squared =         0.8927 for     55 degrees of freedom 
# Null hypothesis probability =   6.984316e-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]    : 19.6574  (  )
R^2/D10^2   : 0.328619  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         135.74 using 59 PHA bins.
# Reduced chi-squared =         2.3814 for     57 degrees of freedom 
# Null hypothesis probability =   2.267691e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.464e-08   1.775e-09
25- 50  1.214e-07   6.850e-09
50-150  3.467e-07   2.205e-08
15-150  4.927e-07   2.300e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 27.0982       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         147.31 using 59 PHA bins.
# Reduced chi-squared =         2.5845 for     57 degrees of freedom 
# Null hypothesis probability =   6.288580e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.748e-08   2.895e-09
25- 50  1.298e-07   5.200e-09
50-150  2.847e-07   1.210e-08
15-150  4.820e-07   1.905e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.84382        (-1.45462      1.68587)
R1^2/D10^2  : 3.07213        (-1.32815      2.89264)
kT2 [keV]   : 27.7757        (-2.89236      4.21012)
R2^2/D10^2  : 8.81328E-02    (-0.0357231   0.0440067)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.35 using 59 PHA bins.
# Reduced chi-squared =         0.8790 for     55 degrees of freedom 
# Null hypothesis probability =   7.250144e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.481e-08   8.495e-09
25- 50  1.234e-07   1.580e-08
50-150  3.858e-07   4.405e-08
15-150  5.540e-07   5.905e-08
Plot creation:
Fri Aug  4 08:32:36 EDT 2017