batgrbproduct analysis for trigger=922107

batgrbproduct Analysis for Trigger=922107

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Aug 26 10:10:42 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger922107/batgroup_hand_proc
======================================================================

  Trigger: 00922107      Segment: 000

  BAT Trigger Time: 588350823.04   [s; MET]
      Trigger Stop: 588350824.064   [s; MET]
               UTC: 2019-08-24T14:46:39.574480    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 215.328919318933   Dec: -41.9023481012554  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.41
     Image Trigger?:     NO
     Rate S/N Ratio:     28.2488937836511  [ if not an image trigger ]
     Image S/N Ratio:    11.41

  Flight Position:   [ source = BAT ]
    RA: 215.328919318933   Dec: -41.9023481012554  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 215.323433768268   Dec: -41.8998543004962  [deg; J2000]  
        { 14h 21m 17.6s , -41d 53' 59.5" }
         +/- 1.70967885807324 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.445569337575467 [arcmin] (formal 1-sigma fit error)
    SNR: 14.1378484217935
 
  Angular difference between Flight and Ground position is 0.287055 arcmin
 
  Partial Coding Fraction: 0.2851562    [ including projection effects ]

  Duration
     T90: 169.360000014305 +/- 5.85471026588723
        Measured from: -62.9759999513626
                   to: 106.384000062943     [s; relative to TRIGTIME]
     T50: 51.824000120163 +/- 9.75651090526973
        Measured from: -1.75999999046326
                   to: 50.0640001296997     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.116000056266785     
                   to: 1.11600005626678     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -71.8880000114441     
                   to: 114.639999985695     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.830672   5.235392   3.674326   0.678148
           0.172943   0.181769   0.164202   0.150069 [error]
 Peak      0.117337   0.225224   0.232519   0.076721
           0.018196   0.022222   0.021387   0.017627 [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 1.31e-06 2.24e-06 2.90e-06 7.62e-06 8.54e-06 1.41e-05   erg/cm2
              Error 9.80e-08 9.89e-08 1.69e-07 9.64e-07 3.99e-07 1.09e-06   erg/cm2
Peak flux Power-law 1.18e+00 1.54e+00 1.48e+00 2.53e+00 5.04e+00 6.73e+00   ph/cm2/s
              Error 2.35e-01 1.90e-01 1.68e-01 6.06e-01 5.25e-01 7.51e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.23e-06 2.31e-06 2.96e-06 4.46e-06 8.28e-06 1.10e-05   erg/cm2
              Error 1.20e-07 1.17e-07 1.81e-07 2.03e-06 4.56e-07 2.07e-06   erg/cm2
Peak flux Cutoff-PL 1.06e+00 1.59e+00 1.57e+00 1.61e+00 4.97e+00 5.83e+00   ph/cm2/s
              Error 3.64e-01 2.14e-01 2.15e-01 1.05e+00 5.39e-01 1.22e+00   ph/cm2/s
 
Fluence        Band 1.22e-06 2.30e-06 -------- 4.73e-06 8.28e-06 1.12e-05   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    1.624    0.078    -      -           4.91e-03 2.14e-04   34.790 57
CPL   1.258    0.322     101.3  132.9      7.48e-03 2.81e-03   30.710 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.058    0.173    -      -           4.36e-02 4.45e-03   61.080 57
CPL   0.601    0.737     171.7  -44.8      7.08e-02 6.50e-02   59.960 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: 167.680000 sec.
T50 in the 50-300 keV band: 43.136000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  186.528  -71.888  114.640
T90   169.360  -62.976  106.384
T50    51.824   -1.760   50.064
Peak    1.000    0.116    1.116

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  215.3234   -41.8999   0.0136    30.5032    55.1510         9.1321707     14.138 TRIG_00922107                 
 
Foreground time interval of the image:
-71.888  15.261 (delta_t =  87.149 [sec])
Background time interval of the image:
-239.040 -71.888 (delta_t = 167.152 [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  -71.888 sec. to  114.640 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62376     ( -0.0781699   0.0787566 )
Norm@50keV  : 4.91032E-03    ( -0.000214197   0.000213556 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.79 using 59 PHA bins.
# Reduced chi-squared =         0.6104 for     57 degrees of freedom 
# Null hypothesis probability =   9.911146e-01
 
Photon flux (15-150 keV)    in 186.5 sec: 0.635730 ( -0.0278727  0.0279263 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.54075e-06 ( -3.97961e-07  3.99834e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -71.888 sec. to  114.640 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25838     ( -0.333842   0.310389 )
Epeak [keV] : 101.318      ( -26.7811 239.055 )
Norm@50keV  : 7.47826E-03    ( -0.00220104   0.00341406 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          30.71 using 59 PHA bins.
# Reduced chi-squared =         0.5484 for     56 degrees of freedom 
# Null hypothesis probability =   9.976324e-01
 
Photon flux (15-150 keV)    in 186.5 sec: 0.621294 ( -0.030251  0.030286 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.28252e-06 ( -4.56291e-07  4.55918e-07 ) ergs/cm2
 
Band function
Time interval is from  -71.888 sec. to  114.640 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.26478   ( -0.302683   0.228393 )
beta        : -9.26841    ( 9.3686   19.3686 )
Epeak [keV] : 102.887      ( -20.5293 40.4418 )
Norm@50keV   : 7.40611E-03    ( -0.00212707   0.00182941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          30.71 using 59 PHA bins.
# Reduced chi-squared =         0.5584 for     55 degrees of freedom 
# Null hypothesis probability =   9.967281e-01
 
Photon flux (15-150 keV)    in 186.5 sec: 0.621537 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.27629e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.2152  (  )
R^2/D10^2   : 8.27456E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         140.20 using 59 PHA bins.
# Reduced chi-squared =         2.4596 for     57 degrees of freedom 
# Null hypothesis probability =   5.826024e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.577e-07   5.147e-08
25- 50  2.483e-06   1.296e-07
50-150  3.330e-06   3.012e-07
15-150  6.471e-06   3.450e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 165.759       (-32.7607      -165.81)
Norm        : 2.58771       (-0.125101     0.135934)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          30.71 using 59 PHA bins.
# Reduced chi-squared =         0.5388 for     57 degrees of freedom 
# Null hypothesis probability =   9.982969e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.228e-06   7.964e-08
25- 50  2.308e-06   2.210e-07
50-150  4.741e-06   1.580e-06
15-150  8.277e-06   1.651e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.59048        (-0.993269      1.10855)
R1^2/D10^2  : 0.804882        (-0.326958      0.646209)
kT2 [keV]   : 23.3014        (-2.91427      4.24842)
R2^2/D10^2  : 1.11750E-02    (-0.00523703   0.0075888)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          31.74 using 59 PHA bins.
# Reduced chi-squared =         0.5770 for     55 degrees of freedom 
# Null hypothesis probability =   9.949970e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.183e-06   1.954e-07
25- 50  2.304e-06   2.790e-07
50-150  4.672e-06   8.309e-07
15-150  8.159e-06   9.484e-07

Peak spectrum fit

Power-law model
Time interval is from    0.116 sec. to    1.116 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05770     ( -0.174206   0.170926 )
Norm@50keV  : 4.36262E-02    ( -0.00445449   0.00444642 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.08 using 59 PHA bins.
# Reduced chi-squared =          1.072 for     57 degrees of freedom 
# Null hypothesis probability =   3.315314e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.04171 ( -0.524109  0.524933 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.62516e-07 ( -5.18356e-08  5.20095e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.116 sec. to    1.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.601475     ( -0.860028   0.613631 )
Epeak [keV] : 171.722      ( -82.0783 -171.71 )
Norm@50keV  : 7.07878E-02    ( -0.030321   0.0995995 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.96 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     56 degrees of freedom 
# Null hypothesis probability =   3.340220e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.96943 ( -0.53994  0.53821 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.53229e-07 ( -5.5531e-08  5.4779e-08 ) ergs/cm2
 
Band function
Time interval is from    0.116 sec. to    1.116 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.454987   ( 0.844785   0.844785 )
beta        : -1.42572    ( 1.41319   0.476029 )
Epeak [keV] : 135.947      ( -134.999 217.359 )
Norm@50keV   : 8.44179E-02    ( -0.0474096   1.71985e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.69 using 59 PHA bins.
# Reduced chi-squared =          1.085 for     55 degrees of freedom 
# Null hypothesis probability =   3.090092e-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]    : 20.2793  (-2.43802  2.96453)
R^2/D10^2   : 0.235498  (-0.0840272   0.121639)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.24 using 59 PHA bins.
# Reduced chi-squared =          1.250 for     57 degrees of freedom 
# Null hypothesis probability =   9.724515e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.857e-08   4.130e-09
25- 50  9.333e-08   1.484e-08
50-150  2.850e-07   4.910e-08
15-150  3.969e-07   5.260e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-21.7459      -200)
Norm        : 20.3848       (-2.15895     2.15895)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          82.24 using 59 PHA bins.
# Reduced chi-squared =          1.443 for     57 degrees of freedom 
# Null hypothesis probability =   1.597693e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.075e-08   2.782e-08
25- 50  9.762e-08   5.345e-08
50-150  2.141e-07   1.172e-07
15-150  3.625e-07   1.988e-07
Double BB
R1^2/D10^2  : 0.581976        (-0.282155      1833.71)
kT2 [keV]   : 79.2683        (-73.4948      -73.4949)
R2^2/D10^2  : 3.21962E-03    (-0.00362256   0.222555)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.36 using 59 PHA bins.
#Fit statistic : Chi-Squared =          61.29 using 59 PHA bins.
#Fit statistic : Chi-Squared =          61.22 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     55 degrees of freedom 
# Reduced chi-squared =          1.114 for     55 degrees of freedom 
# Reduced chi-squared =          1.113 for     55 degrees of freedom 
# Null hypothesis probability =   2.310378e-01
# Null hypothesis probability =   2.607886e-01
# Null hypothesis probability =   2.626739e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.498e-08   1.469e-08
25- 50  8.346e-08   1.849e-08
50-150  3.087e-07   6.935e-08
15-150  4.272e-07   8.195e-08
Plot creation:
Mon Aug 26 10:17:49 EDT 2019