batgrbproduct analysis for trigger=1001628

batgrbproduct Analysis for Trigger=1001628

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Oct 25 20:17:20 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger1001628/GCN5_download_cron
======================================================================

  Trigger: 01001628      Segment: 000

  BAT Trigger Time: 625249040   [s; MET]
      Trigger Stop: 625249104   [s; MET]
               UTC: 2020-10-24T16:16:54.138380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 244.863807361974   Dec: -15.8219221419744  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.75
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.75

  Flight Position:   [ source = BAT ]
    RA: 244.863807361974   Dec: -15.8219221419744  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 244.824368171562   Dec: -15.6328530421485  [deg; J2000]  
        { 16h 19m 17.8s , -15d 37' 58.3" }
         +/- nan [arcmin] (estimated 90% radius based on SNR)
         +/- 395.756458327335 [arcmin] (formal 1-sigma fit error)
    SNR: -0.0248131863636154
 
  Angular difference between Flight and Ground position is 11.570559 arcmin
 
  Partial Coding Fraction: 0.65625    [ including projection effects ]

  Duration
     T90: 17.3719999790192 +/- 1.56101633396437
        Measured from: 634.028000116348
                   to: 651.400000095367     [s; relative to TRIGTIME]
     T50: 10.6679999828339 +/- 5.45858029419925
        Measured from: 636.5640001297
                   to: 647.232000112534     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 634.332000017166     
                   to: 635.332000017166     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 632.651999950409     
                   to: 651.611999988556     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.594890   0.003631  -0.056719  -0.050071
           0.045511   0.040693   0.034116   0.029230 [error]
 Peak      0.062438   0.016910  -0.007246  -0.007508
           0.010545   0.009163   0.007865   0.006901 [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 1.75e-07 2.33e-08 1.38e-09 8.60e-11 1.99e-07 1.99e-07   erg/cm2
              Error 2.97e-08 1.26e-08 1.96e-09 2.26e-10 3.82e-08 3.83e-08   erg/cm2
Peak flux Power-law 6.07e-01 1.42e-01 1.71e-02 2.30e-03 7.68e-01 7.68e-01   ph/cm2/s
              Error 1.73e-01 8.16e-02 2.35e-02 6.09e-03 2.27e-01 2.28e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.89e-07 8.24e-09 2.35e-13 6.54e-24 1.97e-07 1.97e-07   erg/cm2
              Error 3.37e-08 1.47e-08 9.99e-10 0.00e+00 3.42e-08 3.42e-08   erg/cm2
Peak flux Cutoff-PL 6.27e-01 1.46e-01 3.38e-03 2.65e-06 7.77e-01 7.76e-01   ph/cm2/s
              Error 1.85e-01 1.01e-01 1.99e-02 1.68e-03 2.21e-01 2.18e-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    6.081    0.909    -      -           7.87e-05 9.38e-05   47.000  0
CPL  -4.409    0.000      11.4    0.0      1.01e+05 0.00e+00   44.590  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.053    1.083    -      -           1.19e-03 1.33e-03   67.220  0
CPL   0.167    0.000      11.5    0.0      1.16e+00 0.00e+00   66.270  0
 
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   18.960  632.652  651.612
T90    17.372  634.028  651.400
T50    10.668  636.564  647.232
Peak    1.000  634.332  635.332

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  244.8244 -15.6329 7.6877   23.9  -59.0      -0.0019    -0.0  TRIG_01001628       
------------------------------------------
 
Foreground time interval of the image:
632.652 651.612 (delta_t =  18.960 [sec])
Background time interval of the image:
-146.899 632.652 (delta_t = 779.551 [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  632.652 sec. to  651.612 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.08095     ( -0.835976   0.982644 )
Norm@50keV  : 7.87194E-05    ( -7.86784e-05   0.000108951 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.00     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.25e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 18.96 sec: 0.351404 ( -0.0614413  0.0615468 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.99315e-07 ( -3.77632e-08  3.87341e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  632.652 sec. to  651.612 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.40854     (     )
Epeak [keV] : 11.4444      (   )
Norm@50keV  : 1.00672E+05    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.59     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.64e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 18.96 sec: 0.362017 ( -0.059954  0.060748 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.97442e-07 ( -3.40279e-08  3.44333e-08 ) ergs/cm2
 
Band function
Time interval is from  632.652 sec. to  651.612 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.62283   ( 4.21112   6.62283 )
beta        : -6.21865    ( -0.871477   0.964432 )
Epeak [keV] : 805.444      ( -805.444 -805.444 )
Norm@50keV   : 9.18901E-03    ( -0.00598188   0.016133 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 18.96 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]    : 2.33664  (-0.343276  0.40759)
R^2/D10^2   : 298.903  (-298.901   761.738)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.65     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.83e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.875e-07   1.031e-07
25- 50  1.041e-08   6.415e-09
50-150  1.656e-12   1.939e-12
15-150  1.979e-07   1.071e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 4.12323       (-0.884598      1.18857)
Norm        : 176.798       (-110.392     355.365)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   45.01     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.75e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.839e-07   1.012e-07
25- 50  1.452e-08   8.805e-09
50-150  2.582e-11   2.989e-11
15-150  1.984e-07   1.090e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.30249        (-2.30434      -2.30434)
R1^2/D10^2  : 174.682        (-176.794      1.05375e+11)
kT2 [keV]   : 2.38412        (-2.36875      -2.36875)
R2^2/D10^2  : 122.682    (-123.576   -123.576)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.65     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.39e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.875e-07   2.349e+01
25- 50  1.052e-08   2.107e+02
50-150  1.757e-12   5.489e+03
15-150  1.980e-07   5.665e+03

Peak spectrum fit

Power-law model
Time interval is from  634.332 sec. to  635.332 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.05279     ( -0.872009   1.2942 )
Norm@50keV  : 1.18835E-03    ( -0.00118876   0.00147931 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   67.22     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.67e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.767501 ( -0.226109  0.228319 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.72106e-08 ( -9.39139e-09  1.06423e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  634.332 sec. to  635.332 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.166591     (     )
Epeak [keV] : 11.4788      (   )
Norm@50keV  : 1.16265    (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.64e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.776523 ( -0.219908  0.221772 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62609e-08 ( -8.2758e-09  9.5904e-09 ) ergs/cm2
 
Band function
Time interval is from  634.332 sec. to  635.332 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.42243   ( -6.45905   1.63558 )
beta        : -9.37167    ( 9.37167   19.3699 )
Epeak [keV] : 5.53745      ( -4.14575 12.8981 )
Norm@50keV   : 0.118342    ( -0.12731   22.3907 )
------------------------------------------------------------
 
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]    : 3.88436  (-1.04871  1.34251)
R^2/D10^2   : 24.1720  (-24.1721   119.812)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.48     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.83e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.904e-08   1.138e-08
25- 50  6.317e-09   4.137e-09
50-150  6.415e-11   6.755e-11
15-150  2.542e-08   1.473e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 9.40370       (-3.88507      6.82332)
Norm        : 30.9465       (-18.961     83.3282)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.87e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.862e-08   1.096e-08
25- 50  7.366e-09   4.732e-09
50-150  4.255e-10   4.748e-10
15-150  2.641e-08   1.615e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.328595        (-3.0938      -3.0938)
R1^2/D10^2  : 4.26097E+16        (-4.89675e+16      2.26267e+21)
kT2 [keV]   : 4.29471        (-1.24522      1.60755)
R2^2/D10^2  : 13.3942    (-10.6896   77.7972)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   65.34     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.60e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.876e-08   2.618e-08
25- 50  7.181e-09   1.422e-08
50-150  2.863e-10   9.675e-10
15-150  2.623e-08   1.798e-08
Plot creation:
Sun Oct 25 20:20:28 EDT 2020