batgrbproduct analysis for trigger=874754

batgrbproduct Analysis for Trigger=874754

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Dec  5 17:54:14 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger874754/GCN5_download_cron
======================================================================

  Trigger: 00874754      Segment: 000

  BAT Trigger Time: 565648120   [s; MET]
      Trigger Stop: 565648184   [s; MET]
               UTC: 2018-12-04T20:28:17.971720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 188.082656362467   Dec: 16.3088812829625  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.99
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.99

  Flight Position:   [ source = BAT ]
    RA: 188.082656362467   Dec: 16.3088812829625  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 188.154982368285   Dec: 16.3912834371135  [deg; J2000]  
        { 12h 32m 37.2s , +16d 23' 28.6" }
         +/- 4.38031607336729 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.37957037005526 [arcmin] (formal 1-sigma fit error)
    SNR: 3.68707544154035
 
  Angular difference between Flight and Ground position is 6.464044 arcmin
 
  Partial Coding Fraction: 0.75    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.347913   0.152641   0.067571  -0.062759
           0.067841   0.070086   0.062418   0.057678 [error]
 Peak      0.347913   0.152641   0.067571  -0.062759
           0.067841   0.070086   0.062418   0.057678 [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 9.75e-08 8.62e-08 5.23e-08 4.80e-08 2.56e-07 2.84e-07   erg/cm2
              Error 3.26e-08 3.60e-08 4.26e-08 8.21e-08 1.09e-07 1.54e-07   erg/cm2
Peak flux Power-law 5.04e-02 2.49e-02 7.57e-03 2.92e-03 8.46e-02 8.59e-02   ph/cm2/s
              Error 1.72e-02 9.98e-03 5.96e-03 4.63e-03 2.67e-02 2.76e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.17e-07 5.88e-08 8.61e-11 3.86e-19 1.77e-07 1.76e-07   erg/cm2
              Error 3.71e-08 4.72e-08 3.04e-08 0.00e+00 7.86e-08 8.62e-08   erg/cm2
Peak flux Cutoff-PL 5.83e-02 1.96e-02 1.66e-05 4.46e-14 7.78e-02 7.79e-02   ph/cm2/s
              Error 1.94e-02 1.34e-02 -------- 0.00e+00 1.74e-02 2.32e-02   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- 8.22e-02   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    2.721    0.753    -      -           3.74e-04 2.29e-04   57.720 57
CPL   1.000    0.000      50.0    0.0      1.72e-03 0.00e+00   63.290 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.721    0.753    -      -           3.74e-04 2.29e-04   57.720 57
CPL   1.000    0.000      50.0    0.0      1.72e-03 0.00e+00   63.290 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  188.1550 +16.3913 0.0522   35.0  -16.8       0.4950     3.7  TRIG_00874754       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.72072     ( -0.642299   0.864408 )
Norm@50keV  : 3.73887E-04    ( -0.000215619   0.000241516 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.72 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.483704e-01
 
Photon flux (15-150 keV)    in 64 sec: 8.46023E-02 ( -0.0265717  0.0267712 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.56432e-07 ( -1.00556e-07  1.17169e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.72106E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.29 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     56 degrees of freedom 
# Null hypothesis probability =   2.348335e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.77962E-02 7.76158E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.59554e-18 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98216   ( -13.1299   -4.98216 )
beta        : -4.04942    ( 4.04942   1.54336 )
Epeak [keV] : 21.4456      ( -6.401 4.7853 )
Norm@50keV   : 372.131    ( -108.496   4078.53 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.75 using 59 PHA bins.
# Reduced chi-squared =         0.9954 for     55 degrees of freedom 
# Null hypothesis probability =   4.841566e-01
 
Photon flux (15-150 keV)    in 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]    : 5.30231  (-1.31907  1.87501)
R^2/D10^2   : 0.555023  (-0.555022   1.50792)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.12 using 59 PHA bins.
# Reduced chi-squared =         0.9845 for     57 degrees of freedom 
# Null hypothesis probability =   5.081426e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.086e-07   6.502e-08
25- 50  8.178e-08   5.318e-08
50-150  4.384e-09   4.282e-09
15-150  1.948e-07   1.186e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 20.7995       (-10.2714      26.8861)
Norm        : 0.987365       (-0.529382     1.39564)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.92 using 59 PHA bins.
# Reduced chi-squared =         0.9985 for     57 degrees of freedom 
# Null hypothesis probability =   4.781722e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.012e-07   5.997e-08
25- 50  9.134e-08   5.702e-08
50-150  2.920e-08   2.642e-08
15-150  2.218e-07   1.310e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.94370        (-4.8949      1.94423)
R1^2/D10^2  : 0.701525        (-0.723351      4.80349)
kT2 [keV]   : 20.3557        (-20.1659      -20.1659)
R2^2/D10^2  : 6.98709E-04    (-0.000754576   0.00621103)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.37 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Null hypothesis probability =   4.607706e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.079e-07   6.592e-08
25- 50  8.413e-08   4.778e-08
50-150  5.757e-08   3.894e-08
15-150  2.496e-07   1.324e-07

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.72072     ( -0.642299   0.864408 )
Norm@50keV  : 3.73887E-04    ( -0.000215619   0.000241516 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.72 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.483704e-01
 
Photon flux (15-150 keV)    in 64 sec: 8.46023E-02 ( -0.0265717  0.0267712 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.56432e-07 ( -1.00556e-07  1.17169e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.72106E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.29 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     56 degrees of freedom 
# Null hypothesis probability =   2.348335e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.77962E-02 7.76158E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.59554e-18 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98216   ( -6.32258   -4.98216 )
beta        : -4.04942    ( 4.04942   1.54336 )
Epeak [keV] : 21.4456      ( -6.401 4.7853 )
Norm@50keV   : 372.131    ( -108.496   4078.53 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.75 using 59 PHA bins.
# Reduced chi-squared =         0.9954 for     55 degrees of freedom 
# Null hypothesis probability =   4.841566e-01
 
Photon flux (15-150 keV)    in 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]    : 5.30231  (-1.31907  1.87501)
R^2/D10^2   : 0.555023  (-0.555022   1.50792)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.12 using 59 PHA bins.
# Reduced chi-squared =         0.9845 for     57 degrees of freedom 
# Null hypothesis probability =   5.081426e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.086e-07   6.515e-08
25- 50  8.178e-08   5.174e-08
50-150  4.384e-09   4.016e-09
15-150  1.948e-07   1.189e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 20.7995       (-10.2714      26.8861)
Norm        : 0.987365       (-0.529382     1.39564)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.92 using 59 PHA bins.
# Reduced chi-squared =         0.9985 for     57 degrees of freedom 
# Null hypothesis probability =   4.781722e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.012e-07   5.951e-08
25- 50  9.134e-08   5.800e-08
50-150  2.920e-08   2.657e-08
15-150  2.218e-07   1.422e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.94370        (-4.8949      1.94423)
R1^2/D10^2  : 0.701525        (-0.723351      4.80349)
kT2 [keV]   : 20.3557        (-20.1659      -20.1659)
R2^2/D10^2  : 6.98709E-04    (-0.000754576   0.00654704)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.37 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Null hypothesis probability =   4.607706e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.079e-07   6.643e-08
25- 50  8.413e-08   5.312e-08
50-150  5.757e-08   5.165e-08
15-150  2.496e-07   1.362e-07
Plot creation:
Wed Dec  5 17:57:29 EST 2018