batgrbproduct analysis for trigger=928924

batgrbproduct Analysis for Trigger=928924

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Oct 12 07:43:49 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger928924/GCN5_download_cron
======================================================================

  Trigger: 00928924      Segment: 000

  BAT Trigger Time: 592461380.16   [s; MET]
      Trigger Stop: 592461380.672   [s; MET]
               UTC: 2019-10-11T04:35:56.431400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 44.7235634192283   Dec: -27.8448241616054  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.04
     Image Trigger?:     NO
     Rate S/N Ratio:     21.0713075057055  [ if not an image trigger ]
     Image S/N Ratio:    11.04

  Flight Position:   [ source = BAT ]
    RA: 44.7235634192283   Dec: -27.8448241616054  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 44.7291374652994   Dec: -27.8536944192895  [deg; J2000]  
        { 02h 58m 55.0s , -27d 51' 13.3" }
         +/- 1.45322315011244 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.807152641895971 [arcmin] (formal 1-sigma fit error)
    SNR: 17.832617051307
 
  Angular difference between Flight and Ground position is 0.608848 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 7.36800003051758 +/- 0.950286355356625
        Measured from: 0.0280001163482666
                   to: 7.39600014686584     [s; relative to TRIGTIME]
     T50: 3.37600004673004 +/- 1.67248793347714
        Measured from: 0.54800009727478
                   to: 3.92400014400482     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.175999999046326     
                   to: 1.17599999904633     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.20799994468689     
                   to: 8.0440000295639     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.238695   0.233701   0.134793   0.016905
           0.018309   0.018972   0.016334   0.013981 [error]
 Peak      0.070798   0.089979   0.059671   0.003592
           0.007108   0.007886   0.006415   0.005182 [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 6.96e-08 9.79e-08 1.02e-07 1.95e-07 3.31e-07 4.65e-07   erg/cm2
              Error 9.15e-09 8.72e-09 1.59e-08 6.13e-08 3.61e-08 7.78e-08   erg/cm2
Peak flux Power-law 6.86e-01 6.17e-01 3.83e-01 3.61e-01 1.84e+00 2.05e+00   ph/cm2/s
              Error 1.03e-01 6.08e-02 5.34e-02 9.81e-02 1.80e-01 2.03e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.89e-08 9.93e-08 1.02e-07 1.57e-07 3.27e-07 4.27e-07   erg/cm2
              Error 9.92e-09 1.08e-08 1.65e-08 1.03e-07 4.11e-08 1.18e-07   erg/cm2
Peak flux Cutoff-PL 6.40e-01 6.56e-01 3.95e-01 1.94e-01 1.81e+00 1.88e+00   ph/cm2/s
              Error 1.18e-01 7.84e-02 5.87e-02 1.58e-01 1.83e-01 2.43e-01   ph/cm2/s
 
Fluence        Band 6.90e-08 9.89e-08 1.02e-07 1.92e-07 3.32e-07 4.64e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 6.49e-01 6.49e-01 3.94e-01 2.18e-01 1.82e+00 1.91e+00   ph/cm2/s
              Error -------- -------- 5.82e-02 -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.941    0.175    -      -           4.36e-03 4.88e-04   50.760 57
CPL   1.832    0.564      65.9    0.0      5.03e-03 0.00e+00   50.680 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.689    0.168    -      -           1.39e-02 1.50e-03   56.200 57
CPL   1.163    0.671      74.0  -26.3      2.67e-02 2.67e-02   54.300 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: 2.368000 sec.
T50 in the 50-300 keV band: 1.024000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.252   -0.208    8.044
T90     7.368    0.028    7.396
T50     3.376    0.548    3.924
Peak    1.000    0.176    1.176

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   44.7291 -27.8537 0.0107   18.9  -27.6       0.6418    17.8  TRIG_00928924       
------------------------------------------
 
Foreground time interval of the image:
 -0.208   8.044 (delta_t =   8.252 [sec])
Background time interval of the image:
-203.859  -0.208 (delta_t = 203.651 [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   -0.208 sec. to    8.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94103     ( -0.171232   0.178936 )
Norm@50keV  : 4.36119E-03    ( -0.000493852   0.000482643 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.76 using 59 PHA bins.
# Reduced chi-squared =         0.8906 for     57 degrees of freedom 
# Null hypothesis probability =   7.067642e-01
 
Photon flux (15-150 keV)    in 8.252 sec: 0.637065 ( -0.0567414  0.0567632 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.31105e-07 ( -3.57601e-08  3.64461e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.208 sec. to    8.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.83177     ( -0.722151   0.406566 )
Epeak [keV] : 65.9254      (   )
Norm@50keV  : 5.03301E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.68 using 59 PHA bins.
# Reduced chi-squared =         0.9050 for     56 degrees of freedom 
# Null hypothesis probability =   6.758430e-01
 
Photon flux (15-150 keV)    in 8.252 sec: 0.633853 ( -0.059552  0.058896 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.27166e-07 ( -4.25011e-08  3.96509e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.208 sec. to    8.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.67683   ( 1.5478   1.5478 )
beta        : -2.00479    ( 2.01027   0.23725 )
Epeak [keV] : 42.3041      ( -38.2587 -38.2587 )
Norm@50keV   : 6.41636E-03    ( -0.00248019   2684.53 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.64 using 59 PHA bins.
# Reduced chi-squared =         0.9207 for     55 degrees of freedom 
# Null hypothesis probability =   6.417241e-01
 
Photon flux (15-150 keV)    in 8.252 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.31588e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.1868  (-1.14109  1.29692)
R^2/D10^2   : 0.270134  (-0.0983946   0.154602)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          82.58 using 59 PHA bins.
# Reduced chi-squared =          1.449 for     57 degrees of freedom 
# Null hypothesis probability =   1.500655e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.740e-08   7.353e-09
25- 50  1.209e-07   1.320e-08
50-150  6.658e-08   1.504e-08
15-150  2.349e-07   2.703e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 75.4271       (-20.1298      33.5057)
Norm        : 3.02642       (-0.414381     0.507788)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.19 using 59 PHA bins.
# Reduced chi-squared =         0.9156 for     57 degrees of freedom 
# Null hypothesis probability =   6.557739e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.453e-08   7.555e-09
25- 50  1.047e-07   9.944e-09
50-150  1.419e-07   4.671e-08
15-150  3.111e-07   4.369e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.29555        (-1.5357      1.78201)
R1^2/D10^2  : 2.30591        (-1.45798      6.97661)
kT2 [keV]   : 19.2345        (-4.93617      10.8969)
R2^2/D10^2  : 1.83884E-02    (-0.0146587   0.0391636)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.66 using 59 PHA bins.
# Reduced chi-squared =         0.9574 for     55 degrees of freedom 
# Null hypothesis probability =   5.647251e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.890e-08   2.785e-08
25- 50  9.675e-08   3.088e-08
50-150  1.476e-07   8.021e-08
15-150  3.132e-07   1.286e-07

Peak spectrum fit

Power-law model
Time interval is from    0.176 sec. to    1.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68930     ( -0.165573   0.17077 )
Norm@50keV  : 1.38936E-02    ( -0.0015101   0.00148822 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.20 using 59 PHA bins.
# Reduced chi-squared =         0.9860 for     57 degrees of freedom 
# Null hypothesis probability =   5.049717e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.83838 ( -0.179707  0.179761 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2875e-07 ( -1.46531e-08  1.48302e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.176 sec. to    1.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16295     ( -0.74271   0.598814 )
Epeak [keV] : 73.9956      ( -21.4111 -73.9956 )
Norm@50keV  : 2.67449E-02    ( -0.0140099   0.0393281 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.30 using 59 PHA bins.
# Reduced chi-squared =         0.9696 for     56 degrees of freedom 
# Null hypothesis probability =   5.395321e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.80873 ( -0.18345  0.18335 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23748e-07 ( -1.5692e-08  1.6023e-08 ) ergs/cm2
 
Band function
Time interval is from    0.176 sec. to    1.176 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.22989   ( -0.474549   0.749157 )
beta        : -9.36896    ( 9.37142   19.3714 )
Epeak [keV] : 80.1342      ( -25.8883 34.6186 )
Norm@50keV   : 2.43714E-02    ( -0.0112718   0.0175101 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.34 using 59 PHA bins.
# Reduced chi-squared =         0.9881 for     55 degrees of freedom 
# Null hypothesis probability =   4.996220e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.81627 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.25271e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.9050  (-1.52972  1.72586)
R^2/D10^2   : 0.352040  (-0.128557   0.203056)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.86 using 59 PHA bins.
# Reduced chi-squared =          1.366 for     57 degrees of freedom 
# Null hypothesis probability =   3.459604e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.244e-08   2.154e-09
25- 50  4.249e-08   5.335e-09
50-150  4.454e-08   9.395e-09
15-150  9.947e-08   1.260e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 134.160       (-44.8073      -131.476)
Norm        : 7.68742       (-0.862521     1.07398)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.44 using 59 PHA bins.
# Reduced chi-squared =         0.9551 for     57 degrees of freedom 
# Null hypothesis probability =   5.716129e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.991e-08   2.585e-09
25- 50  3.628e-08   7.540e-09
50-150  6.824e-08   3.183e-08
15-150  1.244e-07   4.357e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.57383        (-1.60012      2.00396)
R1^2/D10^2  : 4.38254        (-2.86182      10.1481)
kT2 [keV]   : 20.0190        (-3.88562      6.93284)
R2^2/D10^2  : 5.66127E-02    (-0.0389814   0.0473955)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.16 using 59 PHA bins.
# Reduced chi-squared =         0.9666 for     55 degrees of freedom 
# Null hypothesis probability =   5.450981e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.052e-08   1.036e-08
25- 50  3.545e-08   1.423e-08
50-150  6.566e-08   3.024e-08
15-150  1.216e-07   4.563e-08
Plot creation:
Sat Oct 12 07:48:15 EDT 2019