batgrbproduct analysis for trigger=1015873

batgrbproduct Analysis for Trigger=1015873

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Mon Jan  4 17:21:24 EST 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1015873/GCN5_download_cron
======================================================================

  Trigger: 01015873      Segment: 000

  BAT Trigger Time: 631452445.376   [s; MET]
      Trigger Stop: 631452445.888   [s; MET]
               UTC: 2021-01-04T11:26:59.104760    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 103.704701121309   Dec: 64.6607065720299  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.4
     Image Trigger?:     NO
     Rate S/N Ratio:     23.388031127053  [ if not an image trigger ]
     Image S/N Ratio:    11.4

  Flight Position:   [ source = BAT ]
    RA: 103.704701121309   Dec: 64.6607065720299  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 103.770571310846   Dec: 64.6751572077874  [deg; J2000]  
        { 06h 55m 04.9s , +64d 40' 30.6" }
         +/- 0.670631611532342 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.22438524270835 [arcmin] (formal 1-sigma fit error)
    SNR: 53.8267737659954
 
  Angular difference between Flight and Ground position is 1.900332 arcmin
 
  Partial Coding Fraction: 0.828125    [ including projection effects ]

  Duration
     T90: 32.055999994278 +/- 0.492146305544503
        Measured from: 1.51220011711121
                   to: 33.5682001113892     [s; relative to TRIGTIME]
     T50: 17.1720000505447 +/- 1.38351429913752
        Measured from: 11.2202000617981
                   to: 28.3922001123428     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 26.7761999368668     
                   to: 27.7761999368668     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.999800086021423     
                   to: 45.3881999254227     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.973780   5.340188   3.872657   0.972603
           0.057759   0.062512   0.054756   0.040494 [error]
 Peak      0.350992   0.569742   0.443966   0.112577
           0.012533   0.014831   0.014084   0.008919 [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 1.24e-06 2.21e-06 3.03e-06 8.58e-06 8.75e-06 1.51e-05   erg/cm2
              Error 4.84e-08 4.93e-08 6.31e-08 4.25e-07 1.58e-07 4.47e-07   erg/cm2
Peak flux Power-law 3.67e+00 3.95e+00 3.02e+00 3.76e+00 1.21e+01 1.44e+01   ph/cm2/s
              Error 2.25e-01 1.45e-01 1.17e-01 3.08e-01 4.05e-01 4.69e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.21e-06 2.22e-06 3.05e-06 7.69e-06 8.70e-06 1.42e-05   erg/cm2
              Error 6.63e-08 5.08e-08 5.53e-08 1.17e-06 1.68e-07 9.86e-07   erg/cm2
Peak flux Cutoff-PL 3.40e+00 4.03e+00 3.12e+00 2.69e+00 1.18e+01 1.32e+01   ph/cm2/s
              Error 2.84e-01 1.60e-01 1.38e-01 6.32e-01 4.28e-01 7.81e-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    1.548    0.035    -      -           2.00e-02 3.58e-04   42.040 57
CPL   1.460    0.126     354.8  -75.2      2.19e-02 2.71e-03   40.880 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.388    0.057    -      -           9.92e-02 3.19e-03   62.010 57
CPL   1.062    0.235     155.7  131.3      1.41e-01 3.57e-02   55.990 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: 31.296000 sec.
T50 in the 50-300 keV band: 18.240000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   46.388   -1.000   45.388
T90    32.056    1.512   33.568
T50    17.172   11.220   28.392
Peak    1.000   26.776   27.776

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  103.7706 +64.6752 0.0036   20.0  -49.8       3.4928    53.8  TRIG_01015873       
------------------------------------------
 
Foreground time interval of the image:
 -1.000   9.225 (delta_t =  10.224 [sec])
Background time interval of the image:
-239.376  -1.000 (delta_t = 238.376 [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   -1.000 sec. to   45.388 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54774     ( -0.0350032   0.0350014 )
Norm@50keV  : 2.00192E-02    ( -0.0003585   0.000358447 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.04     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.31e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 46.39 sec: 2.53267 ( -0.0542887  0.0545215 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.74563e-06 ( -1.58014e-07  1.58061e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.000 sec. to   45.388 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45995     ( -0.141835   0.109427 )
Epeak [keV] : 354.842      ( -204.379 -354.846 )
Norm@50keV  : 2.18564E-02    ( -0.00217607   0.0032383 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.88     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.35e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 46.39 sec: 2.51176 ( -0.06242  0.03143 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.70184e-06 ( -1.75261e-07  1.61669e-07 ) ergs/cm2
 
Band function
Time interval is from   -1.000 sec. to   45.388 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.08501   ( -0.350781   5.51621 )
beta        : -1.59563    ( 1.59579   0.0594598 )
Epeak [keV] : 80.1096      ( -49.3163 115.618 )
Norm@50keV   : 3.59970E-02    ( -0.0138958   0.0907504 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 46.39 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]    : 17.3858  (  )
R^2/D10^2   : 0.160477  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  698.49     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.46e-111 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.554e-07   1.856e-08
25- 50  2.051e-06   5.660e-08
50-150  4.457e-06   1.408e-07
15-150  6.963e-06   1.345e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-5.80559      -200)
Norm        : 10.2901       (-0.183342     0.183342)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.07     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.10e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.189e-06   2.621e-08
25- 50  2.287e-06   5.057e-08
50-150  5.017e-06   1.090e-07
15-150  8.493e-06   1.763e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.34538        (-0.574454      0.59801)
R1^2/D10^2  : 1.43584        (-0.29286      0.394687)
kT2 [keV]   : 31.7056        (-2.47658      3.11874)
R2^2/D10^2  : 1.55509E-02    (-0.00429349   0.00523538)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.31     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.55e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.736e-07   6.077e-08
25- 50  2.316e-06   7.701e-08
50-150  5.282e-06   2.157e-07
15-150  8.572e-06   3.108e-07

Peak spectrum fit

Power-law model
Time interval is from   26.776 sec. to   27.776 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38802     ( -0.0572905   0.0574377 )
Norm@50keV  : 9.92459E-02    ( -0.00319062   0.00318989 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.01     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.02e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 12.0538 ( -0.404404  0.404918 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.6136e-07 ( -3.3832e-08  3.39049e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   26.776 sec. to   27.776 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06173     ( -0.241498   0.229183 )
Epeak [keV] : 155.676      ( -44.183 218.336 )
Norm@50keV  : 0.141290    ( -0.0303358   0.04108 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.99     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.75e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 11.8444 ( -0.4275  0.4281 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.43371e-07 ( -3.6722e-08  3.6531e-08 ) ergs/cm2
 
Band function
Time interval is from   26.776 sec. to   27.776 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.398389   ( -0.580174   2.62689 )
beta        : -1.52948    ( -0.37215   0.112027 )
Epeak [keV] : 64.0722      ( -38.0509 105.035 )
Norm@50keV   : 0.362791    ( -0.229066   20.8075 )
------------------------------------------------------------
 
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]    : 16.8679  (  )
R^2/D10^2   : 0.929871  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  235.31     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.59e-23 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.400e-08   3.270e-09
25- 50  2.374e-07   1.110e-08
50-150  4.811e-07   2.905e-08
15-150  7.725e-07   3.040e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-6.73856      -200)
Norm        : 50.0172       (-1.60882     1.60882)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   83.12     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.36e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.246e-07   4.700e-09
25- 50  2.396e-07   8.250e-09
50-150  5.256e-07   1.870e-08
15-150  8.898e-07   2.950e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.53430        (-1.06953      1.15842)
R1^2/D10^2  : 5.91602        (-1.8163      2.99455)
kT2 [keV]   : 31.2900        (-4.23804      6.7296)
R2^2/D10^2  : 8.74117E-02    (-0.0421018   0.0601161)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.10     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.62e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.445e-08   1.039e-08
25- 50  2.407e-07   2.055e-08
50-150  6.074e-07   7.130e-08
15-150  9.426e-07   9.545e-08
Plot creation:
Mon Jan  4 17:24:22 EST 2021