batgrbproduct analysis for trigger=1056426

batgrbproduct Analysis for Trigger=1056426

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat Jun 19 09:51:44 EDT 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1056426/GCN5_download_cron
======================================================================

  Trigger: 01056426      Segment: 000

  BAT Trigger Time: 645673444.224   [s; MET]
      Trigger Stop: 645673444.736   [s; MET]
               UTC: 2021-06-18T01:43:37.008340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 235.820334978217   Dec: 46.0433632334042  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.01
     Image Trigger?:     NO
     Rate S/N Ratio:     12.369316876853  [ if not an image trigger ]
     Image S/N Ratio:    7.01

  Flight Position:   [ source = BAT ]
    RA: 235.820334978217   Dec: 46.0433632334042  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 235.759326457346   Dec: 46.0750331633945  [deg; J2000]  
        { 15h 43m 02.2s , +46d 04' 30.1" }
         +/- 1.97898225052628 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.884893945195658 [arcmin] (formal 1-sigma fit error)
    SNR: 11.4717573642275
 
  Angular difference between Flight and Ground position is 3.172186 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 2.1599999666214 +/- 0.446891464130712
        Measured from: -1.36399984359741
                   to: 0.796000123023987     [s; relative to TRIGTIME]
     T50: 1.2279999256134 +/- 0.482464493772348
        Measured from: -0.879999876022339
                   to: 0.348000049591064     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.495999932289124     
                   to: 0.504000067710876     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.41999995708466     
                   to: 1.02400004863739     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.057290   0.102671   0.076080   0.036382
           0.011845   0.013119   0.013242   0.014430 [error]
 Peak      0.035194   0.054976   0.045384   0.014307
           0.007656   0.008702   0.008683   0.009358 [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 1.64e-08 3.69e-08 6.57e-08 2.75e-07 1.79e-07 3.94e-07   erg/cm2
              Error 4.41e-09 5.83e-09 1.30e-08 1.25e-07 3.27e-08 1.34e-07   erg/cm2
Peak flux Power-law 2.81e-01 3.51e-01 3.19e-01 5.06e-01 1.12e+00 1.46e+00   ph/cm2/s
              Error 9.19e-02 6.82e-02 7.16e-02 2.50e-01 1.96e-01 3.06e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.65e-08 3.70e-08 6.54e-08 2.69e-07 1.78e-07 3.88e-07   erg/cm2
              Error 4.44e-09 5.97e-09 1.30e-08 1.71e-07 3.33e-08 1.29e-07   erg/cm2
Peak flux Cutoff-PL 2.84e-01 3.52e-01 3.18e-01 4.94e-01 1.12e+00 1.45e+00   ph/cm2/s
              Error 9.29e-02 6.86e-02 7.15e-02 4.48e-01 1.96e-01 3.45e-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    1.168    0.278    -      -           7.15e-03 1.07e-03   62.270 57
CPL   1.163    0.544    9999.2    0.0      7.18e-03 6.19e-03   62.280 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.136    0.331    -      -           9.66e-03 1.71e-03   89.460 57
CPL   1.126    0.454    9999.1    0.0      9.70e-03 8.58e-03   89.470 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    2.444   -1.420    1.024
T90     2.160   -1.364    0.796
T50     1.228   -0.880    0.348
Peak    1.000   -0.496    0.504

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  235.7593 +46.0750 0.0168   13.1 -156.5       0.3155    11.5  TRIG_01056426       
------------------------------------------
 
Foreground time interval of the image:
 -1.420   1.024 (delta_t =   2.444 [sec])
Background time interval of the image:
-119.224  -1.420 (delta_t = 117.804 [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   -1.420 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16782     ( -0.279679   0.277271 )
Norm@50keV  : 7.15272E-03    ( -0.0010738   0.00106689 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.94e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 2.444 sec: 0.835978 ( -0.122811  0.122828 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.79006e-07 ( -3.22403e-08  3.32294e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.420 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16339     ( -0.80858   0.278822 )
Epeak [keV] : 9999.25      ( -9999.36 -9999.36 )
Norm@50keV  : 7.17625E-03    ( -0.00105545   0.0113209 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.28     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.63e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 2.444 sec: 0.835859 ( -0.122706  0.122676 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.78343e-07 ( -3.33115e-08  3.32159e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.420 sec. to    1.024 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.126589   ( 0.724135   0.724135 )
beta        : -1.24663    ( 1.21413   0.319735 )
Epeak [keV] : 55.9978      ( -55.1979 370.953 )
Norm@50keV   : 3.50570E-02    ( -0.0354968   421518 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 2.444 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]    : 15.6144  (-3.13453  4.5256)
R^2/D10^2   : 8.33308E-02  (-0.0466593   0.0926424)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.22     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.24e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.032e-08   3.056e-09
25- 50  4.252e-08   1.077e-08
50-150  7.176e-08   2.475e-08
15-150  1.246e-07   3.056e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-57.1288      -200)
Norm        : 3.30439       (-0.496964     0.496964)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   67.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.66e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.019e-08   1.146e-08
25- 50  3.884e-08   2.187e-08
50-150  8.517e-08   4.725e-08
15-150  1.442e-07   8.104e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.1476        (-2.61159      3.09616)
R1^2/D10^2  : 0.282843        (-0.19116      0.549091)
kT2 [keV]   : 200.000        (-167.029      -200)
R2^2/D10^2  : 1.74491E-04    (-3.50071e-05   0.000714112)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   59.41     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.18e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.540e-08   9.121e-09
25- 50  4.074e-08   2.086e-08
50-150  1.287e-07   8.421e-08
15-150  1.848e-07   1.050e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.496 sec. to    0.504 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.13629     ( -0.334391   0.327218 )
Norm@50keV  : 9.65885E-03    ( -0.00171634   0.00170526 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   89.46     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.89e-03 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.12463 ( -0.196226  0.196246 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.98456e-08 ( -2.12836e-08  2.20173e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.496 sec. to    0.504 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.12587     ( -0.576929   0.330795 )
Epeak [keV] : 9999.09      ( -9999.35 -9999.35 )
Norm@50keV  : 9.70006E-03    ( -0.00170777   0.0154521 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   89.47     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.99e-03 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.12447 ( -0.196216  0.19605 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.92418e-08 ( -2.13371e-08  2.26442e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.496 sec. to    0.504 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.82950   ( -4.8295   -4.8295 )
beta        : -1.30293    ( -0.512869   0.406306 )
Epeak [keV] : 29.0027      ( -29.0027 63.8776 )
Norm@50keV   : 251.175    ( -43.5695   2.90345e+06 )
------------------------------------------------------------
 
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]    : 16.9667  (-5.00491  8.52795)
R^2/D10^2   : 8.45196E-02  (-0.0826837   0.179025)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  101.46     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.66e-04 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.958e-09   2.033e-09
25- 50  2.190e-08   9.592e-09
50-150  4.499e-08   1.789e-08
15-150  7.185e-08   2.477e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-68.0279      -200)
Norm        : 4.41741       (-0.792097     0.792098)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   93.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.57e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.104e-08   6.430e-09
25- 50  2.123e-08   1.224e-08
50-150  4.656e-08   2.672e-08
15-150  7.882e-08   4.478e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.64659        (-2.2519      3.13188)
R1^2/D10^2  : 0.870392        (-0.592579      2.05947)
kT2 [keV]   : 50.3656        (-23.065      -50.3759)
R2^2/D10^2  : 3.06929E-03    (-0.00275062   0.00742918)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   86.29     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.47e-03 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.725e-09   5.620e-09
25- 50  2.047e-08   1.089e-08
50-150  7.854e-08   4.245e-08
15-150  1.087e-07   5.590e-08
Plot creation:
Sat Jun 19 09:56:22 EDT 2021