batgrbproduct analysis for trigger=945344

batgrbproduct Analysis for Trigger=945344

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Dec 21 17:55:12 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger945344/GCN5_download_cron
======================================================================

  Trigger: 00945344      Segment: 000

  BAT Trigger Time: 598541401.92   [s; MET]
      Trigger Stop: 598541418.304   [s; MET]
               UTC: 2019-12-20T13:29:37.799160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 281.390866815625   Dec: 26.6672230199831  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.8
     Image Trigger?:     NO
     Rate S/N Ratio:     8.88819441731559  [ if not an image trigger ]
     Image S/N Ratio:    7.8

  Flight Position:   [ source = BAT ]
    RA: 281.390866815625   Dec: 26.6672230199831  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 281.33467574612   Dec: 26.6786275626128  [deg; J2000]  
        { 18h 45m 20.3s , +26d 40' 43.1" }
         +/- 3.02463860671725 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.48125188078937 [arcmin] (formal 1-sigma fit error)
    SNR: 6.25809229605352
 
  Angular difference between Flight and Ground position is 3.089417 arcmin
 
  Partial Coding Fraction: 0.1953125    [ including projection effects ]

  Duration
     T90: 175.552000045776 +/- 125.925491508835
        Measured from: -0.383999824523926
                   to: 175.168000221252     [s; relative to TRIGTIME]
     T50: 39.9360001087189 +/- 101.243982493585
        Measured from: 7.29600012302399
                   to: 47.2320002317429     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.69200003147125     
                   to: 7.69200003147125     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.46399998664856     
                   to: 248.416000008583     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.811574   0.879986   0.255512   0.193157
           0.155676   0.158411   0.135431   0.119866 [error]
 Peak      0.059611   0.022792   0.053676   0.018483
           0.014918   0.016030   0.013716   0.010973 [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 2.71e-07 3.42e-07 3.14e-07 5.05e-07 1.10e-06 1.43e-06   erg/cm2
              Error 7.48e-08 7.56e-08 1.21e-07 3.77e-07 2.87e-07 5.30e-07   erg/cm2
Peak flux Power-law 4.45e-01 3.80e-01 2.22e-01 1.93e-01 1.13e+00 1.24e+00   ph/cm2/s
              Error 3.55e-01 1.31e-01 1.18e-01 2.25e-01 3.83e-01 4.15e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.44e-07 4.40e-07 1.88e-07 9.76e-09 8.81e-07 8.81e-07   erg/cm2
              Error 8.76e-08 1.23e-07 1.70e-07 2.49e-07 2.85e-07 4.04e-07   erg/cm2
Peak flux Cutoff-PL 4.77e-01 3.82e-01 2.06e-01 1.62e-01 1.14e+00 1.23e+00   ph/cm2/s
              Error 2.43e-01 1.27e-01 1.19e-01 2.48e-01 3.87e-01 4.20e-01   ph/cm2/s
 
Fluence        Band 2.39e-07 4.37e-07 2.21e-07 1.15e-07 9.60e-07 1.02e-06   erg/cm2
              Error -------- -------- -------- -------- 2.98e-07 --------   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    2.122    0.397    -      -           4.71e-04 1.35e-04   57.150 57
CPL  -0.183    3.450      33.7   11.3      1.35e-02 1.23e+01   54.380 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.776    0.777    -      -           8.28e-03 3.35e-03   67.610 57
CPL   3.355    1.273     372.1    0.0      1.54e-03 0.00e+00   66.150 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  250.880   -2.464  248.416
T90   175.552   -0.384  175.168
T50    39.936    7.296   47.232
Peak    1.000    6.692    7.692

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  281.3347 +26.6786 0.0308   37.6 -105.2       1.7493     6.3  TRIG_00945344       
------------------------------------------
 
Foreground time interval of the image:
 -2.464  61.581 (delta_t =  64.045 [sec])
Background time interval of the image:
-239.920 -26.990 (delta_t = 212.930 [sec])
-25.920  -2.464 (delta_t =  23.456 [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   -2.464 sec. to  248.416 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.12158     ( -0.372487   0.421193 )
Norm@50keV  : 4.70525E-04    ( -0.000137048   0.000132891 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.15 using 59 PHA bins.
# Reduced chi-squared =          1.003 for     57 degrees of freedom 
# Null hypothesis probability =   4.696767e-01
 
Photon flux (15-150 keV)    in 250.9 sec: 7.48240E-02 ( -0.0159754  0.0159756 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09931e-06 ( -2.79784e-07  2.933e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.464 sec. to  248.416 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.182920     ( -5.00366   1.89731 )
Epeak [keV] : 33.7065      ( -4.62933 17.9007 )
Norm@50keV  : 1.35115E-02    ( -0.0156012   24.589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.38 using 59 PHA bins.
# Reduced chi-squared =         0.9710 for     56 degrees of freedom 
# Null hypothesis probability =   5.364721e-01
 
Photon flux (15-150 keV)    in 250.9 sec: 7.02657E-02 ( -0.0155351  0.0164269 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.80712e-07 ( -2.27371e-07  3.43214e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.464 sec. to  248.416 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.32221   ( -11.6396   -3.93614 )
beta        : -3.38008    ( 2.90447   0.913862 )
Epeak [keV] : 32.5752      ( -11.7471 10.4408 )
Norm@50keV   : 7.88172E-02    ( -0.0774784   20.7483 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.70 using 59 PHA bins.
# Reduced chi-squared =         0.9763 for     55 degrees of freedom 
# Null hypothesis probability =   5.244979e-01
 
Photon flux (15-150 keV)    in 250.9 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.60448e-07 ( -9.58691e-07  -2.78326e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.59303  (-1.57732  1.95675)
R^2/D10^2   : 6.59938E-02  (-0.0370612   0.0811435)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.50 using 59 PHA bins.
# Reduced chi-squared =         0.9561 for     57 degrees of freedom 
# Null hypothesis probability =   5.694659e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.320e-07   9.357e-08
25- 50  4.579e-07   1.820e-07
50-150  1.513e-07   9.129e-08
15-150  8.412e-07   3.420e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 48.2175       (-19.7539      47.3054)
Norm        : 0.440460       (-0.137686     0.211489)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.41 using 59 PHA bins.
# Reduced chi-squared =         0.9721 for     57 degrees of freedom 
# Null hypothesis probability =   5.350476e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.679e-07   8.087e-08
25- 50  3.797e-07   1.266e-07
50-150  3.561e-07   2.208e-07
15-150  1.004e-06   3.392e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 44.2690        (-45.2296      -45.2296)
R1^2/D10^2  : 5.72108E-05        (-5.18263e-05      0.117188)
kT2 [keV]   : 7.94403        (-7.97698      2.10862)
R2^2/D10^2  : 8.40856E-02    (-0.0486698   -0.0825255)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.21 using 59 PHA bins.
#Fit statistic : Chi-Squared =          53.20 using 59 PHA bins.
# Reduced chi-squared =         0.9857 for     55 degrees of freedom 
# Reduced chi-squared =         0.9673 for     55 degrees of freedom 
# Null hypothesis probability =   5.046003e-01
# Null hypothesis probability =   5.436927e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.426e-07   4.470e-07
25- 50  4.396e-07   1.265e-06
50-150  2.110e-07   1.879e-06
15-150  8.932e-07   3.052e-06

Peak spectrum fit

Power-law model
Time interval is from    6.692 sec. to    7.692 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.77617     ( -0.722308   0.831786 )
Norm@50keV  : 8.27930E-03    ( -0.00364837   0.00305709 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.61 using 59 PHA bins.
# Reduced chi-squared =          1.186 for     57 degrees of freedom 
# Null hypothesis probability =   1.587019e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.13063 ( -0.383596  0.381632 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.6263e-08 ( -3.07246e-08  3.08014e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.692 sec. to    7.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.35506     ( -2.12461   0.421675 )
Epeak [keV] : 372.126      (   )
Norm@50keV  : 1.53946E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.15 using 59 PHA bins.
# Reduced chi-squared =          1.181 for     56 degrees of freedom 
# Null hypothesis probability =   1.662597e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.13797 ( -0.39536  0.37767 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.45026e-08 ( -2.87965e-08  3.26924e-08 ) ergs/cm2
 
Band function
Time interval is from    6.692 sec. to    7.692 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.36141   ( 1.36409   1.36409 )
beta        : -1.77703    ( 1.77761   0.723296 )
Epeak [keV] : 23.9819      ( -23.5278 -23.5278 )
Norm@50keV   : 2.03501E-02    ( -0.0203863   2.10819e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.61 using 59 PHA bins.
# Reduced chi-squared =          1.229 for     55 degrees of freedom 
# Null hypothesis probability =   1.182532e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.66897e-08 ( -6.66827e-08  -2.30778e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 5.35237  (-1.67039  3.13772)
R^2/D10^2   : 5.93378  (-5.93378   26.9977)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.59 using 59 PHA bins.
# Reduced chi-squared =          1.291 for     57 degrees of freedom 
# Null hypothesis probability =   6.870773e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.881e-08   1.176e-08
25- 50  1.448e-08   9.825e-09
50-150  8.099e-10   8.030e-10
15-150  3.409e-08   2.238e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 198.929       (-162.63      -199.063)
Norm        : 4.37936       (-1.48537     1.67642)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.82 using 59 PHA bins.
# Reduced chi-squared =          1.207 for     57 degrees of freedom 
# Null hypothesis probability =   1.357283e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.091e-08   6.815e-09
25- 50  2.098e-08   1.305e-08
50-150  4.597e-08   2.852e-08
15-150  7.786e-08   4.785e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.59028        (-1.60057      1.89042)
R1^2/D10^2  : 10.2300        (-8.15398      57.6152)
kT2 [keV]   : 43.4873        (-22.3887      -44.4907)
R2^2/D10^2  : 3.24181E-03    (-0.00300987   0.0168972)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.71 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     55 degrees of freedom 
# Null hypothesis probability =   2.218559e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.819e-08   1.125e-08
25- 50  1.437e-08   9.305e-09
50-150  5.507e-08   3.456e-08
15-150  8.763e-08   4.573e-08
Plot creation:
Sat Dec 21 17:58:29 EST 2019