batgrbproduct analysis for trigger=994143

batgrbproduct Analysis for Trigger=994143

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Sep  2 11:14:48 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger994143/GCN5_download_cron
======================================================================

  Trigger: 00994143      Segment: 000

  BAT Trigger Time: 620624877.12   [s; MET]
      Trigger Stop: 620624878.144   [s; MET]
               UTC: 2020-09-01T03:47:31.562720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 61.7575803016358   Dec: -59.8799948410037  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.5
     Image Trigger?:     NO
     Rate S/N Ratio:     44  [ if not an image trigger ]
     Image S/N Ratio:    17.5

  Flight Position:   [ source = BAT ]
    RA: 61.7575803016358   Dec: -59.8799948410037  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 61.7594126084243   Dec: -59.9009342569794  [deg; J2000]  
        { 04h 07m 02.3s , -59d 54' 03.4" }
         +/- 1.13198947771631 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.366077795860544 [arcmin] (formal 1-sigma fit error)
    SNR: 25.480073713928
 
  Angular difference between Flight and Ground position is 1.257575 arcmin
 
  Partial Coding Fraction: 0.2148438    [ including projection effects ]

  Duration
     T90: 20.3680000305176 +/- 7.54577711369563
        Measured from: -3.8879998922348
                   to: 16.4800001382828     [s; relative to TRIGTIME]
     T50: 4.96000003814697 +/- 0.860139494915862
        Measured from: -1.45599985122681
                   to: 3.50400018692017     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0119999647140503     
                   to: 0.98800003528595     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.432000041008     
                   to: 26.5920000076294     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.375460   1.742478   1.232227   0.313419
           0.087877   0.090747   0.077560   0.064697 [error]
 Peak      0.241232   0.321459   0.279493   0.043329
           0.021305   0.024499   0.020862   0.013807 [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 4.91e-07 7.91e-07 9.63e-07 2.30e-06 2.90e-06 4.55e-06   erg/cm2
              Error 4.92e-08 4.81e-08 7.83e-08 3.99e-07 1.86e-07 4.60e-07   erg/cm2
Peak flux Power-law 2.90e+00 2.59e+00 1.59e+00 1.48e+00 7.71e+00 8.57e+00   ph/cm2/s
              Error 3.69e-01 2.14e-01 1.67e-01 3.02e-01 6.32e-01 6.84e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.85e-07 7.98e-07 9.68e-07 2.02e-06 2.89e-06 4.27e-06   erg/cm2
              Error 5.56e-08 5.58e-08 8.17e-08 7.06e-07 2.00e-07 8.20e-07   erg/cm2
Peak flux Cutoff-PL 2.57e+00 2.75e+00 1.72e+00 8.53e-01 7.57e+00 7.90e+00   ph/cm2/s
              Error 4.45e-01 2.56e-01 2.02e-01 4.08e-01 6.43e-01 7.63e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.55e+00 2.76e+00 1.72e+00 8.32e-01 7.55e+00 7.87e+00   ph/cm2/s
              Error 3.88e-01 2.46e-01 -------- -------- 6.26e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.716    0.107    -      -           1.01e-02 6.20e-04   60.350 57
CPL   1.636    0.409     223.7    0.0      1.11e-02 0.00e+00   60.220 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.703    0.131    -      -           5.80e-02 4.87e-03   67.500 57
CPL   1.074    0.536      77.2   54.5      1.19e-01 7.72e-02   62.860 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: 12.096000 sec.
T50 in the 50-300 keV band: 4.480000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   31.024   -4.432   26.592
T90    20.368   -3.888   16.480
T50     4.960   -1.456    3.504
Peak    1.000   -0.012    0.988

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   61.7594 -59.9009 0.0076   39.9  136.3       4.8846    25.5  TRIG_00994143       
------------------------------------------
 
Foreground time interval of the image:
 -4.432  26.592 (delta_t =  31.024 [sec])
Background time interval of the image:
-239.120 -190.000 (delta_t =  49.120 [sec])
-183.120  -4.432 (delta_t = 178.688 [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   -4.432 sec. to   26.592 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71585     ( -0.105972   0.10707 )
Norm@50keV  : 1.01137E-02    ( -0.000621858   0.000618562 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.35 using 59 PHA bins.
# Reduced chi-squared =          1.059 for     57 degrees of freedom 
# Null hypothesis probability =   3.558016e-01
 
Photon flux (15-150 keV)    in 31.02 sec: 1.35073 ( -0.0829613  0.0831346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.90125e-06 ( -1.85396e-07  1.86204e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.432 sec. to   26.592 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63571     ( -0.408078   0.41019 )
Epeak [keV] : 223.651      (   )
Norm@50keV  : 1.11195E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.22 using 59 PHA bins.
# Reduced chi-squared =          1.075 for     56 degrees of freedom 
# Null hypothesis probability =   3.257140e-01
 
Photon flux (15-150 keV)    in 31.02 sec: 1.34511 ( -0.08675  0.08632 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.88514e-06 ( -2.01174e-07  1.98491e-07 ) ergs/cm2
 
Band function
Time interval is from   -4.432 sec. to   26.592 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.67369E-02   ( -1.49587   -1.49587 )
beta        : -1.78189    ( 1.763   0.129994 )
Epeak [keV] : 32.4745      ( -25.457 157.111 )
Norm@50keV   : 0.142428    ( -0.142437   23.1085 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.95 using 59 PHA bins.
# Reduced chi-squared =          1.072 for     55 degrees of freedom 
# Null hypothesis probability =   3.331910e-01
 
Photon flux (15-150 keV)    in 31.02 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]    : 13.2711  (  )
R^2/D10^2   : 0.220009  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         145.19 using 59 PHA bins.
# Reduced chi-squared =         2.5472 for     57 degrees of freedom 
# Null hypothesis probability =   1.229345e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.548e-07   2.911e-08
25- 50  8.971e-07   6.126e-08
50-150  1.011e-06   1.253e-07
15-150  2.163e-06   1.610e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 141.467       (-35.5931      46.4091)
Norm        : 5.50902       (-0.391311     0.51418)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.36 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     57 degrees of freedom 
# Null hypothesis probability =   2.915752e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.409e-07   3.909e-08
25- 50  8.102e-07   8.282e-08
50-150  1.560e-06   4.824e-07
15-150  2.811e-06   5.653e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.70963        (-1.03361      1.16368)
R1^2/D10^2  : 1.92820        (-0.824032      1.63551)
kT2 [keV]   : 26.6131        (-4.73565      7.82244)
R2^2/D10^2  : 1.36494E-02    (-0.00800992   0.0145268)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.77 using 59 PHA bins.
# Reduced chi-squared =          1.087 for     55 degrees of freedom 
# Null hypothesis probability =   3.066337e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.634e-07   9.402e-08
25- 50  8.149e-07   1.546e-07
50-150  1.603e-06   4.704e-07
15-150  2.881e-06   6.099e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.012 sec. to    0.988 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70279     ( -0.128862   0.13278 )
Norm@50keV  : 5.80182E-02    ( -0.00489156   0.00485635 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.50 using 59 PHA bins.
# Reduced chi-squared =          1.184 for     57 degrees of freedom 
# Null hypothesis probability =   1.610531e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.71295 ( -0.631672  0.632393 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.37063e-07 ( -4.70058e-08  4.71701e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.012 sec. to    0.988 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07351     ( -0.566037   0.5061 )
Epeak [keV] : 77.2040      ( -16.8062 92.2082 )
Norm@50keV  : 0.118770    ( -0.0509907   0.103418 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.86 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     56 degrees of freedom 
# Null hypothesis probability =   2.463846e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.56530 ( -0.64332  0.64363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.28533e-07 ( -4.8303e-08  4.8306e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.012 sec. to    0.988 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.07491   ( -0.523877   0.561222 )
beta        : -10.0000    ( 10   1.24345e-14 )
Epeak [keV] : 77.2834      ( -16.8948 92.1439 )
Norm@50keV   : 0.118542    ( -0.0507793   0.103493 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.86 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     55 degrees of freedom 
# Null hypothesis probability =   2.178858e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.55089 ( -0.55089  -0.61254 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.27647e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.6058  (-1.35981  1.49636)
R^2/D10^2   : 0.958283  (-0.286736   0.404911)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          98.27 using 59 PHA bins.
# Reduced chi-squared =          1.724 for     57 degrees of freedom 
# Null hypothesis probability =   5.626692e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.297e-08   6.120e-09
25- 50  1.665e-07   1.640e-08
50-150  2.389e-07   3.770e-08
15-150  4.484e-07   4.405e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 143.425       (-39.3215      -141.359)
Norm        : 32.0654       (-2.93579     3.49447)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.46 using 59 PHA bins.
# Reduced chi-squared =          1.113 for     57 degrees of freedom 
# Null hypothesis probability =   2.593847e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.265e-08   8.380e-09
25- 50  1.522e-07   2.105e-08
50-150  2.948e-07   1.220e-07
15-150  5.296e-07   1.384e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.89621        (-1.23976      1.62014)
R1^2/D10^2  : 29.8625        (-20.2058      82.3978)
kT2 [keV]   : 20.0745        (-2.67499      3.54686)
R2^2/D10^2  : 0.257051    (-0.122639   0.192776)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.42 using 59 PHA bins.
# Reduced chi-squared =          1.080 for     55 degrees of freedom 
# Null hypothesis probability =   3.178168e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.667e-08   3.836e-08
25- 50  1.409e-07   3.318e-08
50-150  2.991e-07   6.635e-08
15-150  5.267e-07   1.157e-07
Plot creation:
Wed Sep  2 11:20:13 EDT 2020