batgrbproduct analysis for trigger=1000255

batgrbproduct Analysis for Trigger=1000255

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Thu Oct 15 11:05:01 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger1000255/batgroup_hand_proc
======================================================================

  Trigger: 01000255      Segment: 000

  BAT Trigger Time: 624408544   [s; MET]
      Trigger Stop: 624408608   [s; MET]
               UTC: 2020-10-14T22:48:38.193780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 20.8466176995543   Dec: 27.6923730288515  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.38
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.38

  Flight Position:   [ source = BAT ]
    RA: 20.8466176995543   Dec: 27.6923730288515  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 20.8340824780018   Dec: 27.7219777586787  [deg; J2000]  
        { 01h 23m 20.2s , +27d 43' 19.1" }
         +/- 2.50775373547916 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.20217676059562 [arcmin] (formal 1-sigma fit error)
    SNR: 8.17921077613717
 
  Angular difference between Flight and Ground position is 1.896990 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 36.1959998607635 +/- 8.10761416466268
        Measured from: 31.6720000505447
                   to: 67.8679999113083     [s; relative to TRIGTIME]
     T50: 14.2919999361038 +/- 7.68920408764752
        Measured from: 39
                   to: 53.2919999361038     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 59.4400000572205     
                   to: 60.4400000572205     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 30.1640000343323     
                   to: 69.8400000333786     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.382498   0.261239   0.036463   0.025609
           0.042583   0.043640   0.037681   0.032962 [error]
 Peak      0.020656   0.009621   0.006157   0.009307
           0.006916   0.006660   0.005859   0.005260 [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 1.05e-07 1.02e-07 7.00e-08 7.51e-08 3.07e-07 3.52e-07   erg/cm2
              Error 1.93e-08 2.09e-08 2.85e-08 5.65e-08 6.83e-08 1.02e-07   erg/cm2
Peak flux Power-law 1.58e-01 1.06e-01 4.65e-02 2.81e-02 3.25e-01 3.39e-01   ph/cm2/s
              Error 1.31e-01 7.96e-02 4.74e-02 7.22e-02 1.54e-01 1.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.05e-07 1.15e-07 3.55e-08 1.94e-09 2.58e-07 2.58e-07   erg/cm2
              Error 2.07e-08 2.72e-08 4.25e-08 3.15e-08 6.95e-08 9.76e-08   erg/cm2
Peak flux Cutoff-PL 1.60e-01 1.05e-01 4.50e-02 2.61e-02 3.24e-01 3.37e-01   ph/cm2/s
              Error 9.88e-02 6.16e-02 5.01e-02 7.80e-02 1.53e-01 1.27e-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    2.550    0.370    -      -           7.64e-04 2.31e-04    0.000  0
CPL   0.695    2.660      21.2   13.4      1.50e-02 3.58e+00    0.000  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.190    1.446    -      -           1.97e-03 1.72e-03    0.000  0
CPL   2.007    0.000       3.8    0.0      2.03e-03 0.00e+00    0.000  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   39.676   30.164   69.840
T90    36.196   31.672   67.868
T50    14.292   39.000   53.292
Peak    1.000   59.440   60.440

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   20.8341 +27.7220 0.0235   14.7  -14.8       0.6959     8.2  TRIG_01000255       
------------------------------------------
 
Foreground time interval of the image:
 30.164  69.840 (delta_t =  39.676 [sec])
Background time interval of the image:
-143.699  30.164 (delta_t = 173.863 [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   30.164 sec. to   69.840 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.54978     ( -0.34254   0.396762 )
Norm@50keV  : 7.63712E-04    ( -0.000228845   0.000233975 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 39.68 sec: 0.154723 ( -0.0253007  0.0253573 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.07264e-07 ( -6.57756e-08  7.08248e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   30.164 sec. to   69.840 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.694808     ( -3.59567   1.72341 )
Epeak [keV] : 21.1655      ( -19.0159 7.71566 )
Norm@50keV  : 1.49558E-02    ( -0.0157137   7.13625 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 39.68 sec: 0.149648 ( -0.024552  0.025089 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.58203e-07 ( -5.6067e-08  8.28927e-08 ) ergs/cm2
 
Band function
Time interval is from   30.164 sec. to   69.840 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.72775   ( -4.70468   -2.72812 )
beta        : -3.16684    ( -2.75568   0.718915 )
Epeak [keV] : 22.1164      ( -6.32454 4.43764 )
Norm@50keV   : 7.78978    ( -7.80728   199.662 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 39.68 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.27026  (-1.00516  1.18891)
R^2/D10^2   : 0.476653  (-0.247102   0.527312)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.050e-07   3.026e-08
25- 50  1.151e-07   3.478e-08
50-150  1.258e-08   7.750e-09
15-150  2.326e-07   6.204e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.3842       (-8.30929      13.7534)
Norm        : 1.40656       (-0.430625     0.688327)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.057e-07   2.307e-08
25- 50  1.121e-07   3.123e-08
50-150  5.152e-08   3.473e-08
15-150  2.694e-07   6.585e-08
Double BB
XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.09373        (-5.14625      1.85804)
R1^2/D10^2  : 0.927139        (-0.896671      -0.896671)
kT2 [keV]   : 13.5500        (-14.1101      -14.1101)
R2^2/D10^2  : 7.81141E-03    (-0.00644203   0.624679)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.084e-07   6.029e-08
25- 50  1.092e-07   5.859e-08
50-150  5.445e-08   3.972e-08
15-150  2.720e-07   1.399e-07

Peak spectrum fit

Power-law model
Time interval is from   59.440 sec. to   60.440 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.19005     ( -1.11809   1.77313 )
Norm@50keV  : 1.97185E-03    ( -0.00197067   0.00147387 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 0.324731 ( -0.154205  0.154039 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85055e-08 ( -1.13371e-08  1.37797e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   59.440 sec. to   60.440 sec.
 XSPEC: quit
 
 
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.00665     ( -2.00665   -2.00665 )
Epeak [keV] : 3.78599      (   )
Norm@50keV  : 2.02863E-03    (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec: 0.323926 ( -0.152888  0.152656 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.81261e-08 ( -1.09779e-08  1.35899e-08 ) ergs/cm2
 
Band function
Time interval is from   59.440 sec. to   60.440 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.69361   ( 1.69365   1.69365 )
beta        : -2.19031    ( 2.19096   1.11783 )
Epeak [keV] : 4.99347      ( -4.99888 -4.99888 )
Norm@50keV   : 8.00376E-03    ( -0.00800499   1.30103e+06 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.51328  (-3.27602  6.66419)
R^2/D10^2   : 0.779974  (-0.775798   17.3111)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.902e-09   3.109e-09
25- 50  5.814e-09   3.931e-09
50-150  7.369e-10   7.435e-10
15-150  1.145e-08   8.260e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 41.5936       (-41.9919      -41.9919)
Norm        : 1.99408       (-1.27063     7.38263)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.638e-09   3.129e-09
25- 50  6.204e-09   4.056e-09
50-150  5.006e-09   4.616e-09
15-150  1.585e-08   1.119e-08
Double BB
XSPEC12>/*
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.61945        (-4.38969      4.46032)
R1^2/D10^2  : 1.34610        (-1.37384      91.3637)
kT2 [keV]   : 200.000        (-200      -200)
R2^2/D10^2  : 5.64889E-05    (-2.82457e-05   0.000465737)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.216e-09   3.308e-09
25- 50  4.929e-09   3.158e-09
50-150  1.542e-08   1.035e-08
15-150  2.556e-08   1.066e-08
Plot creation:
Thu Oct 15 11:12:15 EDT 2020