batgrbproduct analysis for trigger=796778

batgrbproduct Analysis for Trigger=796778

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Dec 12 22:38:12 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger796778/batgroup_hand_proc
======================================================================

  Trigger: 00796778      Segment: 000

  BAT Trigger Time: 534772661.824   [s; MET]
      Trigger Stop: 534772665.92   [s; MET]
               UTC: 2017-12-12T11:57:21.680200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 293.900492945572   Dec: 20.5684683791818  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.35
     Image Trigger?:     NO
     Rate S/N Ratio:     9.48683298050514  [ if not an image trigger ]
     Image S/N Ratio:    7.35

  Flight Position:   [ source = BAT ]
    RA: 293.900492945572   Dec: 20.5684683791818  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 293.920200204549   Dec: 20.5971205474032  [deg; J2000]  
        { 19h 35m 40.8s , +20d 35' 49.6" }
         +/- 1.65358001292151 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.781515859916436 [arcmin] (formal 1-sigma fit error)
    SNR: 14.827992565388
 
  Angular difference between Flight and Ground position is 2.044690 arcmin
 
  Partial Coding Fraction: 0.609375    [ including projection effects ]

  Duration
     T90: 320 +/- 72
        Measured from: -28.8240000009537
                   to: 291.175999999046     [s; relative to TRIGTIME]
     T50: 80 +/- 16
        Measured from: 3.17599999904633
                   to: 83.1759999990463     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 90.6759999990463     
                   to: 91.6759999990463     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -28.8240000009537     
                   to: 371.175999999046     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.858889   2.561330   1.078455   0.074652
           0.139273   0.142036   0.124417   0.118717 [error]
 Peak      0.036049   0.029410   0.012622   0.002109
           0.007005   0.007280   0.006202   0.005612 [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 9.08e-07 1.07e-06 9.17e-07 1.33e-06 3.37e-06 4.23e-06   erg/cm2
              Error 8.57e-08 7.11e-08 1.16e-07 3.33e-07 2.60e-07 4.64e-07   erg/cm2
Peak flux Power-law 3.76e-01 2.39e-01 9.83e-02 5.48e-02 7.42e-01 7.69e-01   ph/cm2/s
              Error 1.09e-01 6.02e-02 4.81e-02 5.05e-02 1.70e-01 1.81e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.70e-07 1.13e-06 8.72e-07 5.38e-07 3.18e-06 3.41e-06   erg/cm2
              Error 9.67e-08 9.47e-08 1.38e-07 4.34e-07 3.22e-07 7.43e-07   erg/cm2
Peak flux Cutoff-PL 3.76e-01 2.41e-01 9.76e-02 4.64e-02 7.40e-01 7.59e-01   ph/cm2/s
              Error 1.12e-01 7.80e-02 6.20e-02 5.87e-02 1.74e-01 1.93e-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    2.228    0.138    -      -           8.93e-04 8.05e-05   58.520 57
CPL   1.732    0.472      21.4    0.0      1.75e-03 0.00e+00   56.280 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.283    0.509    -      -           4.28e-03 1.59e-03   54.740 57
CPL   1.931    0.000       7.1    0.0      7.16e-03 0.00e+00   54.780 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: 91.392000 sec.
T50 in the 50-300 keV band: 64.128000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  400.000  -28.824  371.176
T90   320.000  -28.824  291.176
T50    80.000    3.176   83.176
Peak    1.000   90.676   91.676

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  293.9202 +20.5971 0.0129   24.1 -107.4       2.2862    14.8  TRIG_00796778       
------------------------------------------
 
Foreground time interval of the image:
-28.824  34.677 (delta_t =  63.501 [sec])
Background time interval of the image:
-618.323 -601.424 (delta_t =  16.899 [sec])
-239.824 -202.315 (delta_t =  37.509 [sec])
-198.824 -28.824 (delta_t = 170.000 [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  -28.824 sec. to  371.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.22811     ( -0.135591   0.140958 )
Norm@50keV  : 8.93029E-04    ( -8.11012e-05   7.99711e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.52 using 59 PHA bins.
# Reduced chi-squared =          1.027 for     57 degrees of freedom 
# Null hypothesis probability =   4.194652e-01
 
Photon flux (15-150 keV)    in 400 sec: 0.150064 ( -0.00984619  0.0098556 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.37244e-06 ( -2.57426e-07  2.6173e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -28.824 sec. to  371.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.73231     ( -0.653836   0.289538 )
Epeak [keV] : 21.4085      (   )
Norm@50keV  : 1.75048E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.28 using 59 PHA bins.
# Reduced chi-squared =          1.005 for     56 degrees of freedom 
# Null hypothesis probability =   4.645207e-01
 
Photon flux (15-150 keV)    in 400 sec: 0.146186 ( -0.010702  0.010727 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.1849e-06 ( -3.12668e-07  3.31752e-07 ) ergs/cm2
 
Band function
Time interval is from  -28.824 sec. to  371.176 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.68059   ( 1.68059   1.68059 )
beta        : -2.79073    ( 2.79029   0.621614 )
Epeak [keV] : 22.7799      ( -22.7799 10.5111 )
Norm@50keV   : 1.88792E-03    ( -0.000551473   299.015 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.10 using 59 PHA bins.
# Reduced chi-squared =          1.020 for     55 degrees of freedom 
# Null hypothesis probability =   4.334313e-01
 
Photon flux (15-150 keV)    in 400 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]    : 8.92601  (-0.690427  0.744415)
R^2/D10^2   : 0.101574  (-0.0279693   0.0389577)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.41 using 59 PHA bins.
# Reduced chi-squared =          1.709 for     57 degrees of freedom 
# Null hypothesis probability =   6.866392e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.275e-07   6.940e-08
25- 50  1.317e-06   1.144e-07
50-150  4.897e-07   1.011e-07
15-150  2.434e-06   2.034e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 46.8496       (-7.95601      10.7968)
Norm        : 0.864761       (-0.105291     0.127188)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.40 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     57 degrees of freedom 
# Null hypothesis probability =   4.604235e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.324e-07   8.300e-08
25- 50  1.167e-06   7.980e-08
50-150  1.064e-06   2.054e-07
15-150  3.064e-06   2.464e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.41951        (-0.971263      1.18311)
R1^2/D10^2  : 1.16069        (-0.70203      1.62837)
kT2 [keV]   : 14.0098        (-2.30405      3.84245)
R2^2/D10^2  : 1.27484E-02    (-0.00838177   0.0102257)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.96 using 59 PHA bins.
# Reduced chi-squared =          1.036 for     55 degrees of freedom 
# Null hypothesis probability =   4.019150e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.822e-07   3.293e-07
25- 50  1.106e-06   3.428e-07
50-150  1.024e-06   3.725e-07
15-150  3.012e-06   8.676e-07

Peak spectrum fit

Power-law model
Time interval is from   90.676 sec. to   91.676 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.28331     ( -0.459267   0.558628 )
Norm@50keV  : 4.28281E-03    ( -0.00162027   0.00156415 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.74 using 59 PHA bins.
# Reduced chi-squared =         0.9604 for     57 degrees of freedom 
# Null hypothesis probability =   5.603325e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.741571 ( -0.169862  0.170011 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.0804e-08 ( -1.20935e-08  1.30468e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   90.676 sec. to   91.676 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93116     (     )
Epeak [keV] : 7.09104      (   )
Norm@50keV  : 7.16170E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.78 using 59 PHA bins.
# Reduced chi-squared =         0.9781 for     56 degrees of freedom 
# Null hypothesis probability =   5.212670e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.740286 ( -0.178164  0.17013 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.05509e-08 ( -1.459e-08  1.3121e-08 ) ergs/cm2
 
Band function
Time interval is from   90.676 sec. to   91.676 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.62195   ( 1.62982   1.62982 )
beta        : -2.47546    ( 2.45728   0.626979 )
Epeak [keV] : 17.8201      ( -17.1158 62.6785 )
Norm@50keV   : 1.20455E-02    ( -0.0108742   4914.89 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.67 using 59 PHA bins.
# Reduced chi-squared =         0.9939 for     55 degrees of freedom 
# Null hypothesis probability =   4.873742e-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]    : 7.63595  (-1.98478  2.50083)
R^2/D10^2   : 0.980962  (-0.662676   2.32387)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.33 using 59 PHA bins.
# Reduced chi-squared =          1.023 for     57 degrees of freedom 
# Null hypothesis probability =   4.260652e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.969e-09   4.796e-09
25- 50  1.607e-08   8.421e-09
50-150  3.611e-09   2.707e-09
15-150  2.965e-08   1.329e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 39.0367       (-18.0217      46.6955)
Norm        : 4.88142       (-1.79275     3.36973)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.01 using 59 PHA bins.
# Reduced chi-squared =         0.9650 for     57 degrees of freedom 
# Null hypothesis probability =   5.502044e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.112e-08   4.183e-09
25- 50  1.447e-08   6.448e-09
50-150  1.090e-08   7.894e-09
15-150  3.648e-08   1.531e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.88004        (-3.3651      -3.88004)
R1^2/D10^2  : 10.3126        (-9.40072      -10.3126)
kT2 [keV]   : 12.2178        (-11.6993      -12.2178)
R2^2/D10^2  : 0.108843    (-0.107616   1.07868)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.98 using 59 PHA bins.
# Reduced chi-squared =         0.9996 for     55 degrees of freedom 
# Null hypothesis probability =   4.755235e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.152e-08   6.165e-09
25- 50  1.373e-08   7.175e-09
50-150  1.007e-08   6.990e-09
15-150  3.532e-08   1.849e-08
Plot creation:
Tue Dec 12 23:46:09 EST 2017