batgrbproduct Analysis for Trigger=641698

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu May 28 13:56:34 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger641698/GCN5_download_cron
======================================================================

  Trigger: 00641698      Segment: 000

  BAT Trigger Time: 454402149.44   [s; MET]
      Trigger Stop: 454402149.952   [s; MET]
               UTC: 2015-05-27T06:48:55.804620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 288.957781485581   Dec: 4.19407695074873  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.07
     Image Trigger?:     NO
     Rate S/N Ratio:     16.0312195418814  [ if not an image trigger ]
     Image S/N Ratio:    9.07

  Flight Position:   [ source = BAT ]
    RA: 288.957781485581   Dec: 4.19407695074873  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 288.962314140381   Dec: 4.19494559533076  [deg; J2000]  
        { 19h 15m 51.0s , +04d 11' 41.8" }
         +/- 0.865715541560236 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.264702750739714 [arcmin] (formal 1-sigma fit error)
    SNR: 37.375099693265
 
  Angular difference between Flight and Ground position is 0.276193 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 112 +/- 80
        Measured from: -111.439999878407
                   to: 0.560000121593475     [s; relative to TRIGTIME]
     T50: 16 +/- 16
        Measured from: -31.4399998784065
                   to: -15.4399998784065     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -7.93999999761581     
                   to: -6.93999999761581     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -111.439999997616     
                   to: 16.5600000023842     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.677599   2.282061   1.309661   0.224715
           0.089288   0.090703   0.082411   0.080443 [error]
 Peak      0.012631   0.021741   0.002579  -0.007177
           0.007191   0.007099   0.006063   0.005915 [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 5.21e-07 8.52e-07 1.05e-06 2.58e-06 3.16e-06 5.01e-06   erg/cm2
              Error 4.43e-08 4.36e-08 8.08e-08 4.22e-07 1.87e-07 4.89e-07   erg/cm2
Peak flux Power-law 1.67e-01 1.03e-01 4.10e-02 2.19e-02 3.23e-01 3.33e-01   ph/cm2/s
              Error 9.47e-02 7.88e-02 4.23e-02 4.21e-02 1.57e-01 1.67e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.00e-07 8.78e-07 1.06e-06 1.54e-06 3.05e-06 3.98e-06   erg/cm2
              Error 5.15e-08 5.45e-08 8.48e-08 9.43e-07 2.28e-07 7.01e-07   erg/cm2
Peak flux Cutoff-PL 1.29e-01 1.59e-01 2.05e-02 6.51e-05 3.09e-01 3.09e-01   ph/cm2/s
              Error 1.07e-01 1.24e-01 3.75e-02 2.31e-02 1.52e-01 1.52e-01   ph/cm2/s
 
Fluence        Band 4.73e-07 9.00e-07 1.02e-06 2.17e-06 3.06e-06 4.58e-06   erg/cm2
              Error -------- -------- 8.70e-08 -------- -------- --------   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    1.693    0.097    -      -           2.66e-03 1.47e-04   51.160 57
CPL   1.392    0.375      93.0  -31.3      3.85e-03 1.87e-03   49.280 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.331    1.057    -      -           1.81e-03 1.33e-03   42.850 57
CPL  -1.873    0.000      32.5    0.0      8.40e-01 0.00e+00   40.870 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: 107.520000 sec.
T50 in the 50-300 keV band: 55.616000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  128.000 -111.440   16.560
T90   112.000 -111.440    0.560
T50    16.000  -31.440  -15.440
Peak    1.000   -7.940   -6.940

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  288.9623  +4.1949 0.0051   10.3  -91.8       4.5512    37.4  TRIG_00641698       
------------------------------------------
 
Foreground time interval of the image:
-44.139   8.661 (delta_t =  52.800 [sec])
Background time interval of the image:

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 -111.440 sec. to   16.560 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69252     ( -0.0967089   0.0978532 )
Norm@50keV  : 2.66234E-03    ( -0.000147874   0.000146793 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.16 using 59 PHA bins.
# Reduced chi-squared =         0.8975 for     57 degrees of freedom 
# Null hypothesis probability =   6.928621e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.352670 ( -0.0181216  0.0181417 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.15712e-06 ( -1.85618e-07  1.8745e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from -111.440 sec. to   16.560 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39225     ( -0.409826   0.34098 )
Epeak [keV] : 93.0325      ( -30.4073 -93.0328 )
Norm@50keV  : 3.84985E-03    ( -0.00126558   0.00246672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.28 using 59 PHA bins.
# Reduced chi-squared =         0.8800 for     56 degrees of freedom 
# Null hypothesis probability =   7.252876e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.346099 ( -0.019789  0.019775 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.04997e-06 ( -2.27571e-07  2.28685e-07 ) ergs/cm2
 
Band function
Time interval is from -111.440 sec. to   16.560 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.149687   ( -1.16151   4.61642 )
beta        : -1.83478    ( 1.82903   0.154354 )
Epeak [keV] : 35.8855      ( -19.1105 38.4577 )
Norm@50keV   : 4.47132E-02    ( -0.0442506   47.3622 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.64 using 59 PHA bins.
# Reduced chi-squared =         0.8480 for     55 degrees of freedom 
# Null hypothesis probability =   7.814694e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.342541 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.05691e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.2059  (  )
R^2/D10^2   : 7.75909E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         125.40 using 59 PHA bins.
# Reduced chi-squared =         2.2000 for     57 degrees of freedom 
# Null hypothesis probability =   4.767341e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.133e-07   3.258e-08
25- 50  1.006e-06   6.157e-08
50-150  9.112e-07   1.139e-07
15-150  2.230e-06   1.440e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 132.902       (-30.001      41.0765)
Norm        : 1.46193       (-0.0907069     0.111251)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.42 using 59 PHA bins.
# Reduced chi-squared =         0.8671 for     57 degrees of freedom 
# Null hypothesis probability =   7.519409e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.849e-07   4.006e-08
25- 50  8.823e-07   7.712e-08
50-150  1.653e-06   5.337e-07
15-150  3.020e-06   5.517e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.21328        (-1.07169      1.11797)
R1^2/D10^2  : 0.374641        (-0.132497      0.243363)
kT2 [keV]   : 26.5912        (-5.36082      9.17738)
R2^2/D10^2  : 3.34886E-03    (-0.00200531   0.00403323)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.61 using 59 PHA bins.
# Reduced chi-squared =         0.8474 for     55 degrees of freedom 
# Null hypothesis probability =   7.824110e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.640e-07   9.690e-08
25- 50  8.969e-07   1.571e-07
50-150  1.654e-06   7.224e-07
15-150  3.015e-06   9.478e-07

Peak spectrum fit

Power-law model
Time interval is from   -7.940 sec. to   -6.940 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.33084     ( -0.836547   1.27727 )
Norm@50keV  : 1.81411E-03    ( -0.00130791   0.00136024 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.85 using 59 PHA bins.
# Reduced chi-squared =         0.7517 for     57 degrees of freedom 
# Null hypothesis probability =   9.178315e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.322509 ( -0.156446  0.158122 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74201e-08 ( -9.9257e-09  1.17674e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -7.940 sec. to   -6.940 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.87257     (     )
Epeak [keV] : 32.4944      (   )
Norm@50keV  : 0.840314    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.87 using 59 PHA bins.
# Reduced chi-squared =         0.7298 for     56 degrees of freedom 
# Null hypothesis probability =   9.356188e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.308870 ( -0.150657  0.15279 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.47915e-08 ( -7.46021e-09  9.5898e-09 ) ergs/cm2
 
Band function
Time interval is from   -7.940 sec. to   -6.940 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.47190   ( -10.3912   -1.5749 )
beta        : -10.0000    ( 10   4.26326e-14 )
Epeak [keV] : 32.5587      ( -14.5177 184.275 )
Norm@50keV   : 8.97414    ( -6.19333   247.37 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.83 using 59 PHA bins.
# Reduced chi-squared =         0.7424 for     55 degrees of freedom 
# Null hypothesis probability =   9.226192e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.27945e-16 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.30808  (-2.88548  4.12768)
R^2/D10^2   : 0.347220  (-0.347235   1.48358)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.87 using 59 PHA bins.
# Reduced chi-squared =         0.7171 for     57 degrees of freedom 
# Null hypothesis probability =   9.471819e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.451e-09   2.919e-09
25- 50  8.309e-09   5.445e-09
50-150  2.467e-09   1.961e-09
15-150  1.523e-08   1.008e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 36.0382       (-22.7817      125.458)
Norm        : 2.33591       (-1.37165     3.67569)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.94 using 59 PHA bins.
# Reduced chi-squared =         0.7358 for     57 degrees of freedom 
# Null hypothesis probability =   9.324760e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.164e-09   3.520e-09
25- 50  6.481e-09   4.267e-09
50-150  4.455e-09   4.192e-09
15-150  1.610e-08   1.187e-08
Double BB
R1^2/D10^2  : 7.35306E+05        (      )
kT2 [keV]   : 8.81578        (-3.11011      4.83103)
R2^2/D10^2  : 0.260329    (   )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.75 using 59 PHA bins.
#Fit statistic : Chi-Squared =          40.12 using 59 PHA bins.
#Fit statistic : Chi-Squared =          40.09 using 59 PHA bins.
# Reduced chi-squared =         0.7409 for     55 degrees of freedom 
# Reduced chi-squared =         0.7294 for     55 degrees of freedom 
# Reduced chi-squared =         0.7289 for     55 degrees of freedom 
# Null hypothesis probability =   9.240599e-01
# Null hypothesis probability =   9.340780e-01
# Null hypothesis probability =   9.345308e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.449e-09   2.870e-09
25- 50  8.042e-09   5.255e-09
50-150  2.396e-09   1.970e-09
15-150  1.489e-08   1.070e-08
Plot creation:
Thu May 28 14:01:09 EDT 2015