batgrbproduct analysis for trigger=944916

batgrbproduct Analysis for Trigger=944916

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Dec 19 17:11:22 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger944916/GCN5_download_cron
======================================================================

  Trigger: 00944916      Segment: 000

  BAT Trigger Time: 598329787.968   [s; MET]
      Trigger Stop: 598329788.992   [s; MET]
               UTC: 2019-12-18T02:42:43.860860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 301.077639808073   Dec: -40.2740100040986  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.88
     Image Trigger?:     NO
     Rate S/N Ratio:     51.8652099195598  [ if not an image trigger ]
     Image S/N Ratio:    8.88

  Flight Position:   [ source = BAT ]
    RA: 301.077639808073   Dec: -40.2740100040986  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 301.069566689344   Dec: -40.277442167151  [deg; J2000]  
        { 20h 04m 16.7s , -40d 16' 38.8" }
         +/- 1.35412111688281 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.575711175070394 [arcmin] (formal 1-sigma fit error)
    SNR: 19.7258725028514
 
  Angular difference between Flight and Ground position is 0.423062 arcmin
 
  Partial Coding Fraction: 0.09472656    [ including projection effects ]

  Duration
     T90: 44.6719999313354 +/- 0.733484755474008
        Measured from: 0.544000029563904
                   to: 45.2159999608994     [s; relative to TRIGTIME]
     T50: 37.5999999046326 +/- 2.86253107738966
        Measured from: 3.11600005626678
                   to: 40.7159999608994     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.663999915122986     
                   to: 1.66399991512299     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.232000112533569     
                   to: 46.0319999456406     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.953877   2.963731   3.865106   1.528328
           0.166122   0.182880   0.173567   0.146736 [error]
 Peak      0.092228   0.267026   0.338142   0.141022
           0.028485   0.033898   0.036557   0.032192 [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 6.77e-07 1.57e-06 2.89e-06 1.27e-05 7.84e-06 1.78e-05   erg/cm2
              Error 8.11e-08 1.12e-07 1.66e-07 1.71e-06 4.33e-07 1.76e-06   erg/cm2
Peak flux Power-law 1.46e+00 1.92e+00 1.86e+00 3.19e+00 6.30e+00 8.43e+00   ph/cm2/s
              Error 4.04e-01 3.33e-01 2.74e-01 9.73e-01 9.10e-01 1.23e+00   ph/cm2/s
 
Fluence   Cutoff-PL 6.59e-07 1.58e-06 2.92e-06 1.14e-05 7.83e-06 1.66e-05   erg/cm2
              Error 1.04e-07 1.14e-07 2.04e-07 3.74e-06 4.39e-07 3.10e-06   erg/cm2
Peak flux Cutoff-PL 1.11e+00 1.98e+00 2.09e+00 1.65e+00 6.10e+00 6.83e+00   ph/cm2/s
              Error 5.02e-01 3.73e-01 3.70e-01 1.21e+00 9.29e-01 1.54e+00   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    1.122    0.098    -      -           1.63e-02 9.15e-04   70.100 57
CPL   1.030    0.262     662.2    0.0      1.78e-02 5.64e-03   69.920 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.052    0.228    -      -           5.45e-02 7.66e-03   68.900 57
CPL   0.136    1.036     124.6  969.2      1.32e-01 1.54e-01   65.990 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: 569.600000 sec.
T50 in the 50-300 keV band: 46.144000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   46.264   -0.232   46.032
T90    44.672    0.544   45.216
T50    37.600    3.116   40.716
Peak    1.000    0.664    1.664

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  301.0696 -40.2774 0.0098   50.3 -139.2      10.7635    19.7  TRIG_00944916       
------------------------------------------
 
Foreground time interval of the image:
 -0.232  46.032 (delta_t =  46.264 [sec])
Background time interval of the image:
-239.968 -72.588 (delta_t = 167.380 [sec])
-71.968  -0.232 (delta_t =  71.736 [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   -0.232 sec. to   46.032 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.12172     ( -0.098389   0.0968647 )
Norm@50keV  : 1.63236E-02    ( -0.000917547   0.000912899 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.10 using 59 PHA bins.
# Reduced chi-squared =          1.230 for     57 degrees of freedom 
# Null hypothesis probability =   1.140889e-01
 
Photon flux (15-150 keV)    in 46.26 sec: 1.89764 ( -0.113546  0.113958 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.84121e-06 ( -4.33181e-07  4.3362e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.232 sec. to   46.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03040     ( -0.389573   0.134635 )
Epeak [keV] : 662.179      ( -662.177 -662.177 )
Norm@50keV  : 1.77943E-02    ( -0.00371598   0.00755835 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.92 using 59 PHA bins.
# Reduced chi-squared =          1.249 for     56 degrees of freedom 
# Null hypothesis probability =   9.999503e-02
 
Photon flux (15-150 keV)    in 46.26 sec: 1.88806 ( -0.1192  0.11919 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.8296e-06 ( -4.3947e-07  4.3762e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.232 sec. to   46.032 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.876088   ( 0.876088   0.876088 )
beta        : -1.12172    ( -0.0968091   0.0984258 )
Epeak [keV] : 55.1782      (   )
Norm@50keV   : 2.95941E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.10 using 59 PHA bins.
# Reduced chi-squared =          1.275 for     55 degrees of freedom 
# Null hypothesis probability =   8.258598e-02
 
Photon flux (15-150 keV)    in 46.26 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]    : 23.7145  (  )
R^2/D10^2   : 5.13520E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         133.66 using 59 PHA bins.
# Reduced chi-squared =         2.3449 for     57 degrees of freedom 
# Null hypothesis probability =   4.242437e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.385e-07   2.517e-08
25- 50  1.316e-06   1.226e-07
50-150  5.519e-06   4.302e-07
15-150  7.074e-06   4.510e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 8.23464       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         134.23 using 59 PHA bins.
# Reduced chi-squared =         2.3548 for     57 degrees of freedom 
# Null hypothesis probability =   3.579786e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.486e-07   5.782e-08
25- 50  1.825e-06   1.161e-07
50-150  4.002e-06   2.551e-07
15-150  6.775e-06   4.418e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.84975        (-1.25158      1.48189)
R1^2/D10^2  : 1.65728        (-0.838475      1.94056)
kT2 [keV]   : 32.3663        (-3.74387      5.25729)
R2^2/D10^2  : 1.71009E-02    (-0.00648713   0.00848898)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.07 using 59 PHA bins.
# Reduced chi-squared =          1.165 for     55 degrees of freedom 
# Null hypothesis probability =   1.882251e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.883e-07   2.063e-07
25- 50  1.527e-06   3.023e-07
50-150  5.734e-06   7.908e-07
15-150  7.949e-06   1.140e-06

Peak spectrum fit

Power-law model
Time interval is from    0.664 sec. to    1.664 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05196     ( -0.230249   0.225631 )
Norm@50keV  : 5.45122E-02    ( -0.00767738   0.00764558 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.90 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     57 degrees of freedom 
# Null hypothesis probability =   1.342278e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.29693 ( -0.908199  0.912024 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.78919e-07 ( -8.48541e-08  8.53105e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.664 sec. to    1.664 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.136405     ( -1.15655   0.916185 )
Epeak [keV] : 124.559      ( -38.8912 1899.59 )
Norm@50keV  : 0.131670    ( -0.0758725   0.232797 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.99 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     56 degrees of freedom 
# Null hypothesis probability =   1.698012e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.10053 ( -0.92574  0.93256 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.70576e-07 ( -8.8002e-08  8.7663e-08 ) ergs/cm2
 
Band function
Time interval is from    0.664 sec. to    1.664 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.132426   ( -0.415453   1.78005 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 123.689      ( -31.8719 89.9231 )
Norm@50keV   : 0.132833    ( -0.0768673   0.232369 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.99 using 59 PHA bins.
# Reduced chi-squared =          1.200 for     55 degrees of freedom 
# Null hypothesis probability =   1.473951e-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]    : 23.0736  (-3.52765  4.35506)
R^2/D10^2   : 0.200384  (-0.0845854   0.139226)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.02 using 59 PHA bins.
# Reduced chi-squared =          1.228 for     57 degrees of freedom 
# Null hypothesis probability =   1.153323e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.930e-08   5.395e-09
25- 50  1.049e-07   2.458e-08
50-150  4.172e-07   9.590e-08
15-150  5.414e-07   1.044e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-33.5212      -200)
Norm        : 26.0654       (-3.76954     3.76954)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.25 using 59 PHA bins.
# Reduced chi-squared =          1.425 for     57 degrees of freedom 
# Null hypothesis probability =   1.913676e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.492e-08   3.683e-08
25- 50  1.249e-07   7.030e-08
50-150  2.739e-07   1.534e-07
15-150  4.637e-07   2.595e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.21587        (-2.96448      2.94365)
R1^2/D10^2  : 3.20811        (-2.69103      23.0319)
kT2 [keV]   : 28.3939        (-5.87002      11.4186)
R2^2/D10^2  : 9.24311E-02    (-0.0633771   0.084302)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.09 using 59 PHA bins.
# Reduced chi-squared =          1.165 for     55 degrees of freedom 
# Null hypothesis probability =   1.877985e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.972e-08   2.304e-08
25- 50  1.128e-07   6.185e-08
50-150  4.291e-07   2.409e-07
15-150  5.816e-07   3.132e-07
Plot creation:
Thu Dec 19 17:25:43 EST 2019