batgrbproduct analysis for trigger=996184

batgrbproduct Analysis for Trigger=996184

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Fri Sep 18 15:30:26 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger996184/GCN5_download_cron
======================================================================

  Trigger: 00996184      Segment: 000

  BAT Trigger Time: 622007573.952   [s; MET]
      Trigger Stop: 622007578.048   [s; MET]
               UTC: 2020-09-17T03:52:28.303740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 235.753465520776   Dec: -4.69532441409532  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.11
     Image Trigger?:     NO
     Rate S/N Ratio:     14  [ if not an image trigger ]
     Image S/N Ratio:    9.11

  Flight Position:   [ source = BAT ]
    RA: 235.753465520776   Dec: -4.69532441409532  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 235.741715036546   Dec: -4.69484282061901  [deg; J2000]  
        { 15h 42m 58.0s , -04d 41' 41.4" }
         +/- 2.03605390299023 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.833292362978815 [arcmin] (formal 1-sigma fit error)
    SNR: 11.015161002239
 
  Angular difference between Flight and Ground position is 0.703257 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 19.3919999599457 +/- 2.8976300963817
        Measured from: -13.595999956131
                   to: 5.7960000038147     [s; relative to TRIGTIME]
     T50: 12.5479999780655 +/- 5.85326981166328
        Measured from: -8.62799990177155
                   to: 3.92000007629395     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.03999996185303     
                   to: 6.03999996185303     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.7640000581741     
                   to: 6.17599999904633     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.287050   0.244033   0.116112   0.018933
           0.035446   0.032181   0.028401   0.027107 [error]
 Peak      0.029611   0.029045   0.013882   0.013867
           0.007770   0.007221   0.005957   0.005829 [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 8.13e-08 9.56e-08 8.10e-08 1.16e-07 3.00e-07 3.74e-07   erg/cm2
              Error 1.54e-08 1.49e-08 2.45e-08 6.81e-08 5.57e-08 9.91e-08   erg/cm2
Peak flux Power-law 2.46e-01 1.99e-01 1.08e-01 8.66e-02 5.92e-01 6.40e-01   ph/cm2/s
              Error 1.00e-01 5.51e-02 4.82e-02 7.84e-02 1.65e-01 1.81e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.00e-08 1.01e-07 7.26e-08 3.63e-08 2.77e-07 2.90e-07   erg/cm2
              Error 1.61e-08 1.99e-08 3.37e-08 9.37e-08 6.95e-08 1.28e-07   erg/cm2
Peak flux Cutoff-PL 2.46e-01 1.99e-01 1.08e-01 8.55e-02 5.92e-01 6.39e-01   ph/cm2/s
              Error 1.00e-01 9.07e-02 7.00e-02 7.77e-02 1.64e-01 2.47e-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    2.239    0.306    -      -           1.44e-03 3.16e-04   42.530 57
CPL   1.696    1.172      19.8    0.0      3.21e-03 0.00e+00   42.020 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.874    0.536    -      -           4.17e-03 1.42e-03   66.810 57
CPL  -7.258    0.000      28.0    0.0      1.53e+04 0.00e+00   65.340 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   21.940  -15.764    6.176
T90    19.392  -13.596    5.796
T50    12.548   -8.628    3.920
Peak    1.000    5.040    6.040

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  235.7417  -4.6948 0.0175   12.5  142.8       0.7438    11.0  TRIG_00996184       
------------------------------------------
 
Foreground time interval of the image:
-15.764   6.176 (delta_t =  21.940 [sec])
Background time interval of the image:
-76.851 -15.764 (delta_t =  61.087 [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  -15.764 sec. to    6.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.23886     ( -0.292848   0.319981 )
Norm@50keV  : 1.44362E-03    ( -0.000319095   0.000313538 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.53 using 59 PHA bins.
# Reduced chi-squared =         0.7461 for     57 degrees of freedom 
# Null hypothesis probability =   9.232101e-01
 
Photon flux (15-150 keV)    in 21.94 sec: 0.243986 ( -0.0351639  0.0351649 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.99525e-07 ( -5.42291e-08  5.71037e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.764 sec. to    6.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69561     ( -1.97386   0.370995 )
Epeak [keV] : 19.8061      (   )
Norm@50keV  : 3.21136E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.02 using 59 PHA bins.
# Reduced chi-squared =         0.7504 for     56 degrees of freedom 
# Null hypothesis probability =   9.170763e-01
 
Photon flux (15-150 keV)    in 21.94 sec: 0.238741 ( -0.036763  0.036368 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.76799e-07 ( -6.51598e-08  7.38457e-08 ) ergs/cm2
 
Band function
Time interval is from  -15.764 sec. to    6.176 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.58644   ( -4.58644   -4.58644 )
beta        : -2.56166    ( -0.58371   0.424682 )
Epeak [keV] : 22.8257      ( -4.90879 4.05146 )
Norm@50keV   : 263.191    ( -37.5925   2.82361e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.21 using 59 PHA bins.
# Reduced chi-squared =         0.7310 for     55 degrees of freedom 
# Null hypothesis probability =   9.326968e-01
 
Photon flux (15-150 keV)    in 21.94 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]    : 7.38180  (-1.10755  1.36197)
R^2/D10^2   : 0.366772  (-0.183637   0.353116)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.54 using 59 PHA bins.
# Reduced chi-squared =         0.8341 for     57 degrees of freedom 
# Null hypothesis probability =   8.096891e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.419e-08   1.974e-08
25- 50  1.124e-07   3.008e-08
50-150  2.248e-08   1.142e-08
15-150  2.090e-07   4.684e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 40.7497       (-13.4374      25.2349)
Norm        : 1.55249       (-0.396625     0.591352)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.14 using 59 PHA bins.
# Reduced chi-squared =         0.7394 for     57 degrees of freedom 
# Null hypothesis probability =   9.293383e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.870e-08   1.639e-08
25- 50  1.044e-07   2.111e-08
50-150  8.239e-08   3.820e-08
15-150  2.655e-07   5.758e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.69657        (-1.55375      1.58446)
R1^2/D10^2  : 0.865701        (-0.460183      1.56164)
kT2 [keV]   : 21.0654        (-11.1359      -23.2293)
R2^2/D10^2  : 3.03835E-03    (-0.00229748   0.0205)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.87 using 59 PHA bins.
# Reduced chi-squared =         0.7249 for     55 degrees of freedom 
# Null hypothesis probability =   9.377519e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.130e-08   4.633e-08
25- 50  9.604e-08   5.071e-08
50-150  1.001e-07   6.409e-08
15-150  2.774e-07   1.448e-07

Peak spectrum fit

Power-law model
Time interval is from    5.040 sec. to    6.040 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87375     ( -0.522636   0.549133 )
Norm@50keV  : 4.16998E-03    ( -0.00144475   0.00138528 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.81 using 59 PHA bins.
# Reduced chi-squared =          1.172 for     57 degrees of freedom 
# Null hypothesis probability =   1.754988e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.591878 ( -0.164494  0.164556 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.83348e-08 ( -1.25372e-08  1.34171e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    5.040 sec. to    6.040 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -7.25799     (     )
Epeak [keV] : 27.9955      (   )
Norm@50keV  : 1.52603E+04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.34 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     56 degrees of freedom 
# Null hypothesis probability =   1.841307e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.591732 ( -0.164237  0.164436 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.16145e-16 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    5.040 sec. to    6.040 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97400   ( -5.61805   -4.974 )
beta        : -2.66909    ( 2.66909   0.908801 )
Epeak [keV] : 26.8636      ( -7.05618 6.28689 )
Norm@50keV   : 455.054    ( -119.686   2688.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.87 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     55 degrees of freedom 
# Null hypothesis probability =   2.176592e-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]    : 7.67791  (-1.74099  2.64943)
R^2/D10^2   : 0.792854  (-0.792854   1.46312)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.62 using 59 PHA bins.
# Reduced chi-squared =          1.169 for     57 degrees of freedom 
# Null hypothesis probability =   1.796778e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.184e-09   4.812e-09
25- 50  1.332e-08   7.570e-09
50-150  3.049e-09   2.538e-09
15-150  2.455e-08   1.539e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 66.5134       (-39.0333      -66.565)
Norm        : 2.96862       (-1.13045     2.19858)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.97 using 59 PHA bins.
# Reduced chi-squared =          1.175 for     57 degrees of freedom 
# Null hypothesis probability =   1.720473e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.571e-09   4.542e-09
25- 50  1.188e-08   7.100e-09
50-150  1.468e-08   1.142e-08
15-150  3.413e-08   2.181e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.83864        (-1.58028      1.58275)
R1^2/D10^2  : 1.16351        (-0.656487      2.05838)
kT2 [keV]   : 200.000        (-200      -200)
R2^2/D10^2  : 8.92397E-05    (-5.57074e-05   -8.9135e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.23 using 59 PHA bins.
#Fit statistic : Chi-Squared =          60.22 using 59 PHA bins.
# Reduced chi-squared =          1.095 for     55 degrees of freedom 
# Reduced chi-squared =          1.095 for     55 degrees of freedom 
# Null hypothesis probability =   2.921750e-01
# Null hypothesis probability =   2.926711e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.514e-09   4.954e-09
25- 50  1.232e-08   7.520e-09
50-150  2.458e-08   3.591e-09
15-150  4.542e-08   1.525e-08
Plot creation:
Fri Sep 18 15:35:01 EDT 2020