batgrbproduct analysis for trigger=998344

batgrbproduct Analysis for Trigger=998344

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Thu Oct  1 15:50:41 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger998344/batgroup_hand_proc
======================================================================

  Trigger: 00998344      Segment: 000

  BAT Trigger Time: 623239157.376   [s; MET]
      Trigger Stop: 623239165.568   [s; MET]
               UTC: 2020-10-01T09:58:51.646720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 110.070324685104   Dec: -2.21023113971737  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.08
     Image Trigger?:     NO
     Rate S/N Ratio:     14  [ if not an image trigger ]
     Image S/N Ratio:    9.08

  Flight Position:   [ source = BAT ]
    RA: 110.070324685104   Dec: -2.21023113971737  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 110.049380079501   Dec: -2.21372848327979  [deg; J2000]  
        { 07h 20m 11.9s , -02d 12' 49.4" }
         +/- 1.88863307025383 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.689399277903993 [arcmin] (formal 1-sigma fit error)
    SNR: 12.2637086069715
 
  Angular difference between Flight and Ground position is 1.273152 arcmin
 
  Partial Coding Fraction: 0.3867188    [ including projection effects ]

  Duration
     T90: 15.2320001125336 +/- 2.89918053084441
        Measured from: -3.15200006961823
                   to: 12.0800000429153     [s; relative to TRIGTIME]
     T50: 8.32000005245209 +/- 2.20058181773198
        Measured from: 1.75999999046326
                   to: 10.0800000429153     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 10.7879999876022     
                   to: 11.7879999876022     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.01600003242493     
                   to: 12.9759999513626     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.117511   0.393868   0.395692   0.135223
           0.045197   0.048463   0.043410   0.038141 [error]
 Peak      0.016570   0.057616   0.043998   0.018686
           0.011442   0.011938   0.010710   0.009687 [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 5.53e-08 1.41e-07 2.90e-07 1.50e-06 7.82e-07 1.99e-06   erg/cm2
              Error 1.53e-08 2.37e-08 3.97e-08 4.78e-07 1.06e-07 4.94e-07   erg/cm2
Peak flux Power-law 2.89e-01 3.18e-01 2.49e-01 3.22e-01 9.77e-01 1.18e+00   ph/cm2/s
              Error 1.33e-01 9.67e-02 8.00e-02 2.02e-01 2.77e-01 3.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.46e-08 1.47e-07 3.15e-07 6.33e-07 7.57e-07 1.14e-06   erg/cm2
              Error 1.92e-08 2.68e-08 5.07e-08 5.10e-07 1.13e-07 7.04e-07   erg/cm2
Peak flux Cutoff-PL 1.23e-01 4.03e-01 3.01e-01 2.47e-02 8.51e-01 8.53e-01   ph/cm2/s
              Error 1.56e-01 1.43e-01 1.22e-01 9.22e-02 3.01e-01 3.10e-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    0.964    0.227    -      -           4.20e-03 5.63e-04   62.180 57
CPL   0.179    1.041     137.1  -42.4      9.12e-03 1.21e-02   60.250 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.352    0.430    -      -           8.10e-03 2.25e-03   66.650 57
CPL  -2.596    0.342      58.2   29.4      6.80e-01 1.53e+03   61.800 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: 16.704000 sec.
T50 in the 50-300 keV band: 8.512000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   16.992   -4.016   12.976
T90    15.232   -3.152   12.080
T50     8.320    1.760   10.080
Peak    1.000   10.788   11.788

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  110.0494  -2.2137 0.0157   30.1   83.9       1.1430    12.3  TRIG_00998344       
------------------------------------------
 
Foreground time interval of the image:
 -4.016  12.976 (delta_t =  16.992 [sec])
Background time interval of the image:
-129.275  -4.016 (delta_t = 125.259 [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   -4.016 sec. to   12.976 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.964482     ( -0.232358   0.220712 )
Norm@50keV  : 4.20067E-03    ( -0.000566386   0.000560561 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.18 using 59 PHA bins.
# Reduced chi-squared =          1.091 for     57 degrees of freedom 
# Null hypothesis probability =   2.970642e-01
 
Photon flux (15-150 keV)    in 16.99 sec: 0.482849 ( -0.0657494  0.0661524 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.81691e-07 ( -1.05549e-07  1.06046e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.016 sec. to   12.976 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.178653     ( -1.21116   0.869894 )
Epeak [keV] : 137.055      ( -52.2851 -137.055 )
Norm@50keV  : 9.12045E-03    ( -0.00519571   0.018991 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.25 using 59 PHA bins.
# Reduced chi-squared =          1.076 for     56 degrees of freedom 
# Null hypothesis probability =   3.248061e-01
 
Photon flux (15-150 keV)    in 16.99 sec: 0.466729 ( -0.068737  0.069052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.56543e-07 ( -1.13836e-07  1.12304e-07 ) ergs/cm2
 
Band function
Time interval is from   -4.016 sec. to   12.976 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.848652   ( 0.848652   0.848652 )
beta        : -0.964496    ( -0.220618   0.232182 )
Epeak [keV] : 26.9853      ( -26.9853 -26.9853 )
Norm@50keV   : 6.60988E-03    ( -0.00274293   228833 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.18 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     55 degrees of freedom 
# Null hypothesis probability =   2.359231e-01
 
Photon flux (15-150 keV)    in 16.99 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]    : 22.6678  (-3.46865  4.51036)
R^2/D10^2   : 1.60603E-02  (-0.00700694   0.0113951)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.57 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     57 degrees of freedom 
# Null hypothesis probability =   2.291107e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.559e-08   7.347e-09
25- 50  1.377e-07   3.395e-08
50-150  5.286e-07   1.161e-07
15-150  6.919e-07   1.271e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-27.9028      -200)
Norm        : 2.01645       (-0.274541     0.274541)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          80.66 using 59 PHA bins.
# Reduced chi-squared =          1.415 for     57 degrees of freedom 
# Null hypothesis probability =   2.127643e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.527e-08   4.780e-08
25- 50  1.640e-07   9.132e-08
50-150  3.597e-07   1.969e-07
15-150  6.091e-07   3.330e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.15208        (-0.93601      1.32046)
R1^2/D10^2  : 3.43709E+04        (-34356.2      0)
kT2 [keV]   : 23.3903        (-3.6488      4.85054)
R2^2/D10^2  : 1.43892E-02    (-0.00643364   0.0104887)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.14 using 59 PHA bins.
# Reduced chi-squared =          1.093 for     55 degrees of freedom 
# Null hypothesis probability =   2.951742e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.471e-08   7.869e-09
25- 50  1.317e-07   2.964e-08
50-150  5.377e-07   1.336e-07
15-150  7.040e-07   1.511e-07

Peak spectrum fit

Power-law model
Time interval is from   10.788 sec. to   11.788 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35185     ( -0.430617   0.429973 )
Norm@50keV  : 8.10376E-03    ( -0.00225388   0.00224971 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.65 using 59 PHA bins.
# Reduced chi-squared =          1.169 for     57 degrees of freedom 
# Null hypothesis probability =   1.790929e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.976684 ( -0.27588  0.277312 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.91081e-08 ( -2.35138e-08  2.39544e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   10.788 sec. to   11.788 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.59602     ( 2.31831   3.0015 )
Epeak [keV] : 58.2367      ( -12.4486 46.4176 )
Norm@50keV  : 0.679508    ( -0.744278   3061.12 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.80 using 59 PHA bins.
# Reduced chi-squared =          1.104 for     56 degrees of freedom 
# Null hypothesis probability =   2.766223e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.850791 ( -0.298032  0.304349 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.45043e-08 ( -2.34941e-08  2.68837e-08 ) ergs/cm2
 
Band function
Time interval is from   10.788 sec. to   11.788 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.93672   ( -5.21745   -4.93672 )
beta        : -3.12600    ( 3.126   1.35085 )
Epeak [keV] : 51.9602      ( -11.9806 10.3506 )
Norm@50keV   : 11.3008    ( -2.90433   42.9702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.02 using 59 PHA bins.
# Reduced chi-squared =          1.109 for     55 degrees of freedom 
# Null hypothesis probability =   2.684413e-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]    : 15.7862  (-3.39522  4.80552)
R^2/D10^2   : 0.107556  (-0.0662768   0.142772)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.03 using 59 PHA bins.
# Reduced chi-squared =          1.088 for     57 degrees of freedom 
# Null hypothesis probability =   3.015793e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.558e-09   2.908e-09
25- 50  2.312e-08   1.233e-08
50-150  4.006e-08   2.188e-08
15-150  6.874e-08   3.462e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-111.884      -199.363)
Norm        : 4.10411       (-1.13089     1.13089)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.34 using 59 PHA bins.
# Reduced chi-squared =          1.164 for     57 degrees of freedom 
# Null hypothesis probability =   1.860790e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.022e-08   6.190e-09
25- 50  1.966e-08   1.181e-08
50-150  4.311e-08   2.616e-08
15-150  7.299e-08   4.357e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.16194        (-1.15505      4.04657)
R1^2/D10^2  : 4.66639E+04        (-53075.3      3.8155e+09)
kT2 [keV]   : 16.1641        (-3.53943      5.1471)
R2^2/D10^2  : 9.74658E-02    (-0.0616203   0.124296)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.30 using 59 PHA bins.
# Reduced chi-squared =          1.114 for     55 degrees of freedom 
# Null hypothesis probability =   2.604653e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.216e-09   3.323e-09
25- 50  2.230e-08   9.900e-09
50-150  4.088e-08   2.576e-08
15-150  6.939e-08   3.400e-08
Plot creation:
Thu Oct  1 18:35:26 EDT 2020