batgrbproduct analysis for trigger=766161

batgrbproduct Analysis for Trigger=766161

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Aug  4 23:15:52 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger766161/GCN5_download_cron
======================================================================

  Trigger: 00766161      Segment: 000

  BAT Trigger Time: 523516136   [s; MET]
      Trigger Stop: 523516200   [s; MET]
               UTC: 2017-08-04T05:08:36.526800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 230.833563887997   Dec: -19.5473832952482  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.29
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.29

  Flight Position:   [ source = BAT ]
    RA: 230.833563887997   Dec: -19.5473832952482  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 230.780788458265   Dec: -19.5906859540611  [deg; J2000]  
        { 15h 23m 07.4s , -19d 35' 26.5" }
         +/- 4.52578662722494 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.3883821821085 [arcmin] (formal 1-sigma fit error)
    SNR: 3.5189456463489
 
  Angular difference between Flight and Ground position is 3.956316 arcmin
 
  Partial Coding Fraction: 0.8359375    [ including projection effects ]

  Duration
     T90: 71.7959999442101 +/- 18.9723404888213
        Measured from: 2.40000009536743
                   to: 74.1960000395775     [s; relative to TRIGTIME]
     T50: 39.5839999914169 +/- 23.4510611967743
        Measured from: 14.9320001006126
                   to: 54.5160000920296     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 22.1480000019073     
                   to: 23.1480000019073     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.712000012397766     
                   to: 77.5120000243187     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.412242   0.233817   0.097716  -0.040840
           0.067190   0.059853   0.049418   0.041742 [error]
 Peak      0.018277   0.023328   0.002797   0.001953
           0.007606   0.006850   0.005469   0.004608 [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 1.27e-07 9.75e-08 4.99e-08 3.67e-08 2.92e-07 3.11e-07   erg/cm2
              Error 3.37e-08 3.23e-08 3.43e-08 5.36e-08 8.93e-08 1.14e-07   erg/cm2
Peak flux Power-law 2.01e-01 1.27e-01 5.17e-02 2.86e-02 3.94e-01 4.08e-01   ph/cm2/s
              Error 1.13e-01 5.80e-02 4.00e-02 4.69e-02 1.73e-01 1.80e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.30e-07 9.93e-08 2.88e-08 3.24e-09 2.59e-07 2.64e-07   erg/cm2
              Error 4.35e-08 5.10e-08 4.29e-08 5.19e-08 1.10e-07 1.35e-07   erg/cm2
Peak flux Cutoff-PL 1.74e-01 1.65e-01 2.97e-02 4.78e-04 3.69e-01 3.69e-01   ph/cm2/s
              Error 1.33e-01 8.97e-02 4.57e-02 3.95e-02 1.76e-01 1.81e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    2.966    0.628    -      -           3.15e-04 1.62e-04   76.640 57
CPL   1.000    0.000      50.0    0.0      1.51e-03 0.00e+00   89.790 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.294    0.910    -      -           2.26e-03 1.38e-03   61.050 57
CPL  -0.038    0.000      30.1    0.0      7.16e-02 0.00e+00   60.290 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   78.224   -0.712   77.512
T90    71.796    2.400   74.196
T50    39.584   14.932   54.516
Peak    1.000   22.148   23.148

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  230.7808 -19.5907 0.0547   32.0  -16.0       1.0458     3.5  TRIG_00766161       
------------------------------------------
 
Foreground time interval of the image:
 -0.712  73.501 (delta_t =  74.213 [sec])
Background time interval of the image:
-12.599  -0.712 (delta_t =  11.887 [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   -0.712 sec. to   77.512 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.96602     ( -0.56121   0.695378 )
Norm@50keV  : 3.15186E-04    ( -0.000152398   0.000170827 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.64 using 59 PHA bins.
# Reduced chi-squared =          1.344 for     57 degrees of freedom 
# Null hypothesis probability =   4.242937e-02
 
Photon flux (15-150 keV)    in 78.22 sec: 8.45701E-02 ( -0.0200428  0.0200672 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.91685e-07 ( -8.47709e-08  9.37905e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.712 sec. to   77.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.51028E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.79 using 59 PHA bins.
# Reduced chi-squared =          1.603 for     56 degrees of freedom 
# Null hypothesis probability =   2.789434e-03
 
Photon flux (15-150 keV)    in 78.22 sec: 7.96434E-02 ( -0.0191989  0.0229646 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.52754e-18 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.712 sec. to   77.512 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96155   ( -4.96155   -4.96155 )
beta        : -3.45850    ( 3.4585   0.852539 )
Epeak [keV] : 18.2028      ( -18.2028 4.90656 )
Norm@50keV   : 1131.93    ( -261.134   2.95514e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.71 using 59 PHA bins.
# Reduced chi-squared =          1.358 for     55 degrees of freedom 
# Null hypothesis probability =   3.968862e-02
 
Photon flux (15-150 keV)    in 78.22 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]    : 4.82829  (-0.986784  1.28481)
R^2/D10^2   : 0.842948  (-0.842957   1.76423)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.18 using 59 PHA bins.
# Reduced chi-squared =          1.337 for     57 degrees of freedom 
# Null hypothesis probability =   4.567861e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.391e-07   8.014e-08
25- 50  8.328e-08   5.030e-08
50-150  2.851e-09   2.533e-09
15-150  2.253e-07   1.352e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 16.2503       (-6.418      13.4982)
Norm        : 1.32912       (-0.688897     1.54207)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.45 using 59 PHA bins.
# Reduced chi-squared =          1.341 for     57 degrees of freedom 
# Null hypothesis probability =   4.371825e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.322e-07   5.857e-08
25- 50  9.718e-08   4.844e-08
50-150  2.005e-08   1.777e-08
15-150  2.494e-07   1.113e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.42516        (-4.42377      1.28022)
R1^2/D10^2  : 1.18973        (-1.19021      12.491)
kT2 [keV]   : 22.5986        (-22.565      -22.565)
R2^2/D10^2  : 5.54782E-04    (-0.000557662   1.26209)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.84 using 59 PHA bins.
# Reduced chi-squared =          1.343 for     55 degrees of freedom 
# Null hypothesis probability =   4.585146e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.393e-07   8.080e-08
25- 50  8.629e-08   4.721e-08
50-150  8.443e-08   6.003e-08
15-150  3.100e-07   1.605e-07

Peak spectrum fit

Power-law model
Time interval is from   22.148 sec. to   23.148 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.29395     ( -0.78954   1.03138 )
Norm@50keV  : 2.26004E-03    ( -0.00139146   0.00136551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.05 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     57 degrees of freedom 
# Null hypothesis probability =   3.324652e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.393635 ( -0.173392  0.173493 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.15724e-08 ( -1.06913e-08  1.17693e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   22.148 sec. to   23.148 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -3.78235E-02     (     )
Epeak [keV] : 30.1192      (   )
Norm@50keV  : 7.16409E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.29 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     56 degrees of freedom 
# Null hypothesis probability =   3.233031e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.368881 ( -0.174466  0.177919 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74886e-08 ( -8.13528e-09  1.39139e-08 ) ergs/cm2
 
Band function
Time interval is from   22.148 sec. to   23.148 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98084   ( -4.98084   -4.98084 )
beta        : -2.50049    ( 2.50049   0.910159 )
Epeak [keV] : 20.6974      ( -20.6974 101.628 )
Norm@50keV   : 1711.38    ( -739.094   1.16023e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.50 using 59 PHA bins.
# Reduced chi-squared =          1.100 for     55 degrees of freedom 
# Null hypothesis probability =   2.838705e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.86445e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.08565  (-2.84695  4.21236)
R^2/D10^2   : 0.437601  (-0.4376   2.13608)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.26 using 59 PHA bins.
# Reduced chi-squared =          1.057 for     57 degrees of freedom 
# Null hypothesis probability =   3.586489e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.214e-09   3.327e-09
25- 50  9.295e-09   6.055e-09
50-150  2.527e-09   2.358e-09
15-150  1.704e-08   1.118e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 37.9108       (-23.3637      149.025)
Norm        : 2.69227       (-1.58165     4.34535)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.56 using 59 PHA bins.
# Reduced chi-squared =          1.063 for     57 degrees of freedom 
# Null hypothesis probability =   3.485895e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.067e-09   3.959e-09
25- 50  7.795e-09   4.915e-09
50-150  5.681e-09   4.732e-09
15-150  1.954e-08   1.373e-08
Double BB
R1^2/D10^2  : 1.51552E-05        (-1.5155e-05      -1.5155e-05)
kT2 [keV]   : 7.78247        (-2.40271      4.20477)
R2^2/D10^2  : 0.497108    (-0.413629   1.80901)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.19 using 59 PHA bins.
#Fit statistic : Chi-Squared =          60.01 using 59 PHA bins.
#Fit statistic : Chi-Squared =          59.99 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     55 degrees of freedom 
# Reduced chi-squared =          1.091 for     55 degrees of freedom 
# Reduced chi-squared =          1.091 for     55 degrees of freedom 
# Null hypothesis probability =   2.935668e-01
# Null hypothesis probability =   2.992000e-01
# Null hypothesis probability =   2.995641e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.553e-09   3.858e-09
25- 50  8.992e-09   6.485e-09
50-150  2.923e-09   2.546e-09
15-150  1.747e-08   1.257e-08
Plot creation:
Fri Aug  4 23:22:46 EDT 2017