batgrbproduct analysis for trigger=876016

batgrbproduct Analysis for Trigger=876016

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Dec 14 20:34:26 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger876016/GCN5_download_cron
======================================================================

  Trigger: 00876016      Segment: 000

  BAT Trigger Time: 566398680.512   [s; MET]
      Trigger Stop: 566398696.896   [s; MET]
               UTC: 2018-12-13T12:57:38.436940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 248.207112628901   Dec: 78.5044118700811  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.3
     Image Trigger?:     NO
     Rate S/N Ratio:     13.7840487520902  [ if not an image trigger ]
     Image S/N Ratio:    11.3

  Flight Position:   [ source = BAT ]
    RA: 248.207112628901   Dec: 78.5044118700811  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 248.210477401933   Dec: 78.5002265854685  [deg; J2000]  
        { 16h 32m 50.5s , +78d 30' 00.8" }
         +/- 1.91730887848378 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.846030345284173 [arcmin] (formal 1-sigma fit error)
    SNR: 12.0025229930761
 
  Angular difference between Flight and Ground position is 0.254321 arcmin
 
  Partial Coding Fraction: 0.2128906    [ including projection effects ]

  Duration
     T90: 15.3120000362396 +/- 1.24175349095536
        Measured from: 0.0240001678466797
                   to: 15.3360002040863     [s; relative to TRIGTIME]
     T50: 11.1519999504089 +/- 2.78464351532585
        Measured from: 2.0880001783371
                   to: 13.240000128746     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.16400003433228     
                   to: 2.16400003433228     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.695999979972839     
                   to: 15.944000005722     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.528163   0.833072   0.581924   0.167630
           0.078262   0.082257   0.075920   0.067423 [error]
 Peak      0.074643   0.092869   0.054258   0.038497
           0.019054   0.021881   0.021253   0.016259 [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 2.13e-07 3.75e-07 5.06e-07 1.40e-06 1.47e-06 2.50e-06   erg/cm2
              Error 4.10e-08 4.43e-08 7.47e-08 4.44e-07 1.81e-07 5.01e-07   erg/cm2
Peak flux Power-law 7.76e-01 7.01e-01 4.37e-01 4.15e-01 2.09e+00 2.33e+00   ph/cm2/s
              Error 3.17e-01 1.95e-01 1.57e-01 2.86e-01 5.74e-01 6.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.11e-07 3.78e-07 5.09e-07 1.23e-06 1.46e-06 2.31e-06   erg/cm2
              Error 4.51e-08 5.08e-08 7.85e-08 9.31e-07 1.91e-07 7.54e-07   erg/cm2
Peak flux Cutoff-PL 7.09e-01 7.74e-01 4.63e-01 1.84e-01 2.07e+00 2.13e+00   ph/cm2/s
              Error 3.57e-01 2.68e-01 1.88e-01 2.55e-01 5.78e-01 6.95e-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    1.569    0.197    -      -           9.40e-03 1.08e-03   43.830 57
CPL   1.502    1.064     341.5    0.0      1.02e-02 1.21e-02   43.810 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.682    0.443    -      -           1.58e-02 4.60e-03   48.930 57
CPL   0.924    2.239      66.4    0.0      4.09e-02 9.96e-01   48.410 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: 5.632000 sec.
T50 in the 50-300 keV band: 3.328000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   16.640   -0.696   15.944
T90    15.312    0.024   15.336
T50    11.152    2.088   13.240
Peak    1.000    1.164    2.164

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  248.2105 +78.5002 0.0160   47.6 -148.2       1.9845    12.0  TRIG_00876016       
------------------------------------------
 
Foreground time interval of the image:
 -0.696  15.944 (delta_t =  16.640 [sec])
Background time interval of the image:
-239.512  -0.696 (delta_t = 238.816 [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   -0.696 sec. to   15.944 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56921     ( -0.195639   0.197645 )
Norm@50keV  : 9.40006E-03    ( -0.00107909   0.00107272 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.83 using 59 PHA bins.
# Reduced chi-squared =         0.7689 for     57 degrees of freedom 
# Null hypothesis probability =   8.997741e-01
 
Photon flux (15-150 keV)    in 16.64 sec: 1.19672 ( -0.138608  0.139088 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46861e-06 ( -1.79952e-07  1.81306e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.696 sec. to   15.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50176     ( -0.810457   1.31724 )
Epeak [keV] : 341.488      ( -390.69 -390.69 )
Norm@50keV  : 1.01809E-02    ( -0.00838532   0.0157323 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.81 using 59 PHA bins.
# Reduced chi-squared =         0.7824 for     56 degrees of freedom 
# Null hypothesis probability =   8.816266e-01
 
Photon flux (15-150 keV)    in 16.64 sec: 1.19363 ( -0.14262  0.1406 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.463e-06 ( -1.96736e-07  1.85707e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.696 sec. to   15.944 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.92974   ( -4.92974   -4.92974 )
beta        : -1.62382    ( -0.26243   0.212716 )
Epeak [keV] : 23.0840      ( -23.084 6.74111 )
Norm@50keV   : 1525.17    ( -169.658   5.68746e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.10 using 59 PHA bins.
# Reduced chi-squared =         0.7837 for     55 degrees of freedom 
# Null hypothesis probability =   8.776526e-01
 
Photon flux (15-150 keV)    in 16.64 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]    : 13.7197  (-1.88329  2.29644)
R^2/D10^2   : 0.181466  (-0.0776819   0.128353)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.54 using 59 PHA bins.
# Reduced chi-squared =          1.132 for     57 degrees of freedom 
# Null hypothesis probability =   2.299805e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.203e-07   2.543e-08
25- 50  4.383e-07   6.698e-08
50-150  5.375e-07   1.364e-07
15-150  1.096e-06   1.554e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.070       (-85.1354      -199.098)
Norm        : 4.86107       (-0.541109     0.643369)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.05 using 59 PHA bins.
# Reduced chi-squared =         0.7727 for     57 degrees of freedom 
# Null hypothesis probability =   8.954297e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.015e-07   1.117e-07
25- 50  3.875e-07   2.123e-07
50-150  8.494e-07   4.662e-07
15-150  1.438e-06   7.900e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.19429        (-2.19409      2.1855)
R1^2/D10^2  : 0.608429        (-0.304319      0.516268)
kT2 [keV]   : 49.5970        (-23.0112      -49.597)
R2^2/D10^2  : 1.83259E-03    (-0.00172672   0.0109727)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.21 using 59 PHA bins.
# Reduced chi-squared =         0.7675 for     55 degrees of freedom 
# Null hypothesis probability =   8.969014e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.767e-07   6.524e-08
25- 50  4.294e-07   1.444e-07
50-150  8.714e-07   4.479e-07
15-150  1.477e-06   5.740e-07

Peak spectrum fit

Power-law model
Time interval is from    1.164 sec. to    2.164 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68249     ( -0.425329   0.460207 )
Norm@50keV  : 1.58284E-02    ( -0.00466773   0.00454066 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.93 using 59 PHA bins.
# Reduced chi-squared =         0.8583 for     57 degrees of freedom 
# Null hypothesis probability =   7.678956e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.08950 ( -0.573469  0.574264 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46762e-07 ( -4.41753e-08  4.49466e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.164 sec. to    2.164 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.923676     ( -2.99258   1.48455 )
Epeak [keV] : 66.3641      ( -66.431 -66.431 )
Norm@50keV  : 4.09421E-02    ( -0.0408473   1.95188 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.41 using 59 PHA bins.
# Reduced chi-squared =         0.8644 for     56 degrees of freedom 
# Null hypothesis probability =   7.545680e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.06830 ( -0.57858  0.57731 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.40998e-07 ( -4.81617e-08  4.7565e-08 ) ergs/cm2
 
Band function
Time interval is from    1.164 sec. to    2.164 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.95188   ( -4.95188   -4.95188 )
beta        : -1.86303    ( -0.972571   0.505423 )
Epeak [keV] : 25.5246      ( -25.5246 12.3512 )
Norm@50keV   : 1674.19    ( -447.27   1.56352e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.83 using 59 PHA bins.
# Reduced chi-squared =         0.8696 for     55 degrees of freedom 
# Null hypothesis probability =   7.426953e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.41877e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.3038  (-3.39559  4.72314)
R^2/D10^2   : 0.494777  (-0.346676   1.08306)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.54 using 59 PHA bins.
# Reduced chi-squared =         0.8867 for     57 degrees of freedom 
# Null hypothesis probability =   7.144059e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.587e-08   9.157e-09
25- 50  5.141e-08   2.732e-08
50-150  4.757e-08   3.165e-08
15-150  1.148e-07   5.477e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 138.730       (-84.0392      -135.941)
Norm        : 8.77901       (-2.58476     3.89515)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.50 using 59 PHA bins.
# Reduced chi-squared =         0.8508 for     57 degrees of freedom 
# Null hypothesis probability =   7.812798e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.268e-08   1.354e-08
25- 50  4.156e-08   2.412e-08
50-150  7.934e-08   5.080e-08
15-150  1.436e-07   8.985e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.58269        (-9.0493      5.39836)
R1^2/D10^2  : 1.37686        (-1.18492      -1.18492)
kT2 [keV]   : 30.6282        (-39.6932      -39.6932)
R2^2/D10^2  : 9.69630E-03    (-0.00424966   0.617411)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.06 using 59 PHA bins.
# Reduced chi-squared =         0.8737 for     55 degrees of freedom 
# Null hypothesis probability =   7.349950e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.063e-08   1.248e-08
25- 50  4.662e-08   2.829e-08
50-150  6.990e-08   4.460e-08
15-150  1.372e-07   7.830e-08
Plot creation:
Fri Dec 14 20:40:37 EST 2018