batgrbproduct analysis for trigger=814305

batgrbproduct Analysis for Trigger=814305

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Mar 15 21:20:49 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger814305/GCN5_download_cron
======================================================================

  Trigger: 00814305      Segment: 000

  BAT Trigger Time: 542759037.568   [s; MET]
      Trigger Stop: 542759038.592   [s; MET]
               UTC: 2018-03-14T22:23:36.943440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 297.866097981945   Dec: 23.6232874833055  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.74
     Image Trigger?:     NO
     Rate S/N Ratio:     6.6332495807108  [ if not an image trigger ]
     Image S/N Ratio:    7.74

  Flight Position:   [ source = BAT ]
    RA: 297.866097981945   Dec: 23.6232874833055  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 297.855450619029   Dec: 23.6344730605309  [deg; J2000]  
        { 19h 51m 25.3s , +23d 38' 04.1" }
         +/- 1.9510250732033 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.751387474932641 [arcmin] (formal 1-sigma fit error)
    SNR: 11.7073112525068
 
  Angular difference between Flight and Ground position is 0.890492 arcmin
 
  Partial Coding Fraction: 0.6640625    [ including projection effects ]

  Duration
     T90: 73 +/- 9.4339811320566
        Measured from: -44.5679998397827
                   to: 28.4320001602173     [s; relative to TRIGTIME]
     T50: 20 +/- 20.2237484161567
        Measured from: -11.5679998397827
                   to: 8.43200016021729     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.567999958992004     
                   to: 0.432000041007996     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -47.567999958992     
                   to: 34.432000041008     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.854862   0.713040   0.315505  -0.024068
           0.083592   0.081115   0.067686   0.054355 [error]
 Peak      0.050808   0.033578   0.032628   0.006020
           0.010244   0.009562   0.007760   0.006017 [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 2.95e-07 3.14e-07 2.37e-07 2.90e-07 9.56e-07 1.14e-06   erg/cm2
              Error 4.51e-08 4.10e-08 5.97e-08 1.38e-07 1.40e-07 2.21e-07   erg/cm2
Peak flux Power-law 5.01e-01 3.63e-01 1.74e-01 1.18e-01 1.09e+00 1.16e+00   ph/cm2/s
              Error 1.68e-01 8.14e-02 6.76e-02 8.96e-02 2.48e-01 2.60e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.82e-07 3.48e-07 2.07e-07 5.89e-08 8.82e-07 8.96e-07   erg/cm2
              Error 4.87e-08 5.45e-08 7.77e-08 1.53e-07 1.50e-07 1.97e-07   erg/cm2
Peak flux Cutoff-PL 5.02e-01 3.63e-01 1.74e-01 1.17e-01 1.09e+00 1.16e+00   ph/cm2/s
              Error 2.21e-01 8.15e-02 8.34e-02 1.13e-01 2.46e-01 2.67e-01   ph/cm2/s
 
Fluence        Band 3.20e-07 3.93e-07 2.92e-07 1.92e-07 1.11e-06 1.20e-06   erg/cm2
              Error 5.62e-08 -------- -------- -------- 1.91e-07 --------   erg/cm2
Peak flux      Band 6.16e-01 4.51e-01 1.93e-01 7.51e-02 1.31e+00 1.33e+00   ph/cm2/s
              Error -------- -------- -------- -------- 2.51e-01 2.72e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.407    0.249    -      -           1.20e-03 2.23e-04   63.230 57
CPL   1.463    1.033      21.1   16.3      4.64e-03 0.00e+00   60.500 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.058    0.463    -      -           7.10e-03 2.07e-03   59.470 57
CPL   2.063    0.806     476.1    0.0      7.06e-03 0.00e+00   59.470 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   82.000  -47.568   34.432
T90    73.000  -44.568   28.432
T50    20.000  -11.568    8.432
Peak    1.000   -0.568    0.432

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  297.8555 +23.6345 0.0164   33.3 -152.7       2.0637    11.7  TRIG_00814305       
------------------------------------------
 
Foreground time interval of the image:
-47.568 -20.268 (delta_t =  27.300 [sec])
-19.568  17.833 (delta_t =  37.401 [sec])
Background time interval of the image:
-129.467 -47.568 (delta_t =  81.899 [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
Multiple GTIs in the spectrum
tstart tstop
-47.568000 -20.268000
-19.568000 34.432000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.40651     ( -0.237591   0.260879 )
Norm@50keV  : 1.20370E-03    ( -0.000224616   0.000221062 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.23 using 59 PHA bins.
# Reduced chi-squared =          1.109 for     57 degrees of freedom 
# Null hypothesis probability =   2.657586e-01
 
Photon flux (15-150 keV)    in 81.3 sec: 0.223565 ( -0.0268121  0.0268135 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.56015e-07 ( -1.37988e-07  1.42301e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-47.568000 -20.268000
-19.568000 34.432000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.46317     ( -1.32032   0.745223 )
Epeak [keV] : 21.0760      ( -20.4139 12.1105 )
Norm@50keV  : 4.63741E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.50 using 59 PHA bins.
# Reduced chi-squared =          1.080 for     56 degrees of freedom 
# Null hypothesis probability =   3.166393e-01
 
Photon flux (15-150 keV)    in 81.3 sec: 0.217849 ( -0.027184  0.027287 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.8169e-07 ( -1.4254e-07  1.566e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-47.568000 -20.268000
-19.568000 34.432000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.42998   ( -14.0192   -4.42998 )
beta        : -2.66712    ( -0.424725   0.329913 )
Epeak [keV] : 22.0546      ( -3.92208 3.5471 )
Norm@50keV   : 231.882    ( -27.5932   6793.58 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.43 using 59 PHA bins.
# Reduced chi-squared =          1.099 for     55 degrees of freedom 
# Null hypothesis probability =   2.861196e-01
 
Photon flux (15-150 keV)    in 81.3 sec: 0.218924 ( 6.78108  -0.028397 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.11387e-06 ( -1.1133e-06  -2.09689e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 7.49357  (-0.995156  1.1607)
R^2/D10^2   : 0.316403  (-0.141442   0.255995)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.30 using 59 PHA bins.
# Reduced chi-squared =          1.233 for     57 degrees of freedom 
# Null hypothesis probability =   1.108828e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.477e-07   5.207e-08
25- 50  3.858e-07   7.199e-08
50-150  8.129e-08   3.100e-08
15-150  7.148e-07   1.215e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 36.2546       (-9.28664      13.6936)
Norm        : 1.55033       (-0.340694     0.466245)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.53 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     57 degrees of freedom 
# Null hypothesis probability =   3.498274e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.793e-07   4.228e-08
25- 50  3.515e-07   5.224e-08
50-150  2.433e-07   9.150e-08
15-150  8.741e-07   1.423e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.16891        (-1.45383      1.44478)
R1^2/D10^2  : 1.09390        (-0.668568      2.94156)
kT2 [keV]   : 15.5196        (-4.95301      9.28506)
R2^2/D10^2  : 9.48093E-03    (-0.00861584   0.0492386)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.16 using 59 PHA bins.
# Reduced chi-squared =          1.076 for     55 degrees of freedom 
# Null hypothesis probability =   3.263912e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.852e-07   1.584e-07
25- 50  3.329e-07   1.753e-07
50-150  2.716e-07   1.606e-07
15-150  8.897e-07   4.549e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.568 sec. to    0.432 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.05754     ( -0.424727   0.502084 )
Norm@50keV  : 7.10318E-03    ( -0.00215853   0.00199099 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.47 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     57 degrees of freedom 
# Null hypothesis probability =   3.857279e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.09466 ( -0.247277  0.24777 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.57513e-08 ( -1.73881e-08  1.78684e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.568 sec. to    0.432 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.06284     ( -1.53279   0.0798279 )
Epeak [keV] : 476.102      (   )
Norm@50keV  : 7.05612E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.47 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     56 degrees of freedom 
# Null hypothesis probability =   3.504471e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.09460 ( -0.245336  0.24679 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.59262e-08 ( -1.78687e-08  1.75763e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.568 sec. to    0.432 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.30004   ( 6.30004   6.30004 )
beta        : -2.05755    ( -0.502074   0.424913 )
Epeak [keV] : 20.8282      ( -20.8282 -20.8282 )
Norm@50keV   : 0.965418    ( -0.293371   0.270608 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.47 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     55 degrees of freedom 
# Null hypothesis probability =   3.161492e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.30677 ( 5.69323  -0.24649 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.39571e-08 ( -7.39501e-08  -1.76605e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.2296  (-3.76665  4.25196)
R^2/D10^2   : 0.171694  (-0.110271   0.412061)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.97 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     57 degrees of freedom 
# Null hypothesis probability =   1.516507e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.371e-09   3.460e-09
25- 50  2.236e-08   9.009e-09
50-150  2.499e-08   1.377e-08
15-150  5.372e-08   2.394e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 74.2559       (-36.8824      121.069)
Norm        : 5.17912       (-1.5874     2.48216)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.26 using 59 PHA bins.
# Reduced chi-squared =          1.057 for     57 degrees of freedom 
# Null hypothesis probability =   3.587396e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.336e-08   4.488e-09
25- 50  2.159e-08   7.410e-09
50-150  2.895e-08   2.220e-08
15-150  6.391e-08   3.316e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.48903        (-1.29692      1.60303)
R1^2/D10^2  : 30.8517        (-26.0443      426.122)
kT2 [keV]   : 17.9221        (-4.70621      7.78451)
R2^2/D10^2  : 4.69221E-02    (-0.0344593   0.103915)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.46 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     55 degrees of freedom 
# Null hypothesis probability =   4.571325e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.692e-08   9.730e-09
25- 50  1.726e-08   9.490e-09
50-150  3.246e-08   2.087e-08
15-150  6.664e-08   3.714e-08
Plot creation:
Thu Mar 15 21:27:28 EDT 2018