batgrbproduct Analysis for Trigger=668689

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Dec 30 02:40:49 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger668689/GCN5_download_cron
======================================================================

  Trigger: 00668689      Segment: 000

  BAT Trigger Time: 473064643.584   [s; MET]
      Trigger Stop: 473064644.096   [s; MET]
               UTC: 2015-12-29T06:50:27.963280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 329.379608251525   Dec: -20.7287933382282  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.29
     Image Trigger?:     NO
     Rate S/N Ratio:     61.3595958265698  [ if not an image trigger ]
     Image S/N Ratio:    17.29

  Flight Position:   [ source = BAT ]
    RA: 329.379608251525   Dec: -20.7287933382282  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 329.363964998969   Dec: -20.7319954618356  [deg; J2000]  
        { 21h 57m 27.4s , -20d 43' 55.2" }
         +/- 1.03163883193719 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.35599340346105 [arcmin] (formal 1-sigma fit error)
    SNR: 29.0933091143668
 
  Angular difference between Flight and Ground position is 0.898606 arcmin
 
  Partial Coding Fraction: 0.515625    [ including projection effects ]

  Duration
     T90: 1.43999993801117 +/- 0.447146548280103
        Measured from: -0.0519998669624329
                   to: 1.38800007104874     [s; relative to TRIGTIME]
     T50: 0.607999980449677 +/- 0.0804984237327102
        Measured from: 0.140000104904175
                   to: 0.748000085353851     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.111999988555908     
                   to: 0.888000011444092     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.111999988555908     
                   to: 2.34399998188019     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.317170   0.398969   0.240220   0.044815
           0.017669   0.018920   0.015939   0.011435 [error]
 Peak      0.248888   0.319964   0.208348   0.039736
           0.013449   0.014743   0.012564   0.008356 [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 1.12e-07 1.67e-07 1.87e-07 3.94e-07 5.86e-07 8.60e-07   erg/cm2
              Error 1.01e-08 9.58e-09 1.56e-08 6.79e-08 3.68e-08 8.22e-08   erg/cm2
Peak flux Power-law 2.76e+00 2.41e+00 1.44e+00 1.31e+00 7.17e+00 7.92e+00   ph/cm2/s
              Error 2.47e-01 1.35e-01 1.06e-01 1.90e-01 4.00e-01 4.25e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.06e-07 1.75e-07 1.90e-07 2.16e-07 5.69e-07 6.87e-07   erg/cm2
              Error 1.18e-08 1.21e-08 1.68e-08 1.31e-07 4.06e-08 1.37e-07   erg/cm2
Peak flux Cutoff-PL 2.62e+00 2.48e+00 1.48e+00 9.31e-01 7.07e+00 7.51e+00   ph/cm2/s
              Error 2.92e-01 1.60e-01 1.16e-01 3.82e-01 4.14e-01 5.73e-01   ph/cm2/s
 
Fluence        Band 1.04e-07 1.76e-07 1.85e-07 3.07e-07 5.70e-07 7.74e-07   erg/cm2
              Error 1.25e-08 -------- 1.91e-08 -------- -------- --------   erg/cm2
Peak flux      Band 2.58e+00 2.52e+00 1.44e+00 1.13e+00 7.05e+00 7.67e+00   ph/cm2/s
              Error -------- -------- -------- -------- 4.18e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.843    0.102    -      -           2.59e-02 1.61e-03   48.270 57
CPL   1.442    0.413      66.0  170.2      4.22e-02 2.21e-02   45.220 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.738    0.095    -      -           5.33e-02 3.04e-03   60.350 57
CPL   1.442    0.359      92.7  -32.1      7.57e-02 3.30e-02   58.280 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: 0.960000 sec.
T50 in the 50-300 keV band: 0.448000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    2.456   -0.112    2.344
T90     1.440   -0.052    1.388
T50     0.608    0.140    0.748
Peak    1.000   -0.112    0.888

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  329.3640 -20.7320 0.0066   32.4 -125.2       1.0132    29.1  TRIG_00668689       
------------------------------------------
 
Foreground time interval of the image:
 -0.112   2.344 (delta_t =   2.456 [sec])
Background time interval of the image:
-239.584  -0.112 (delta_t = 239.472 [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   -0.112 sec. to    2.344 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84285     ( -0.101243   0.103246 )
Norm@50keV  : 2.59249E-02    ( -0.00161828   0.00160487 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.27 using 59 PHA bins.
# Reduced chi-squared =         0.8469 for     57 degrees of freedom 
# Null hypothesis probability =   7.881848e-01
 
Photon flux (15-150 keV)    in 2.456 sec: 3.63355 ( -0.212604  0.212784 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.85513e-07 ( -3.67108e-08  3.69004e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.112 sec. to    2.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44214     ( -0.433353   0.392542 )
Epeak [keV] : 66.0048      ( -15.0941 325.247 )
Norm@50keV  : 4.21647E-02    ( -0.0156273   0.0285127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.22 using 59 PHA bins.
# Reduced chi-squared =         0.8074 for     56 degrees of freedom 
# Null hypothesis probability =   8.481799e-01
 
Photon flux (15-150 keV)    in 2.456 sec: 3.56503 ( -0.22248  0.22253 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68589e-07 ( -4.05977e-08  4.05633e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.112 sec. to    2.344 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25525   ( -0.297083   1.41264 )
beta        : -2.08041    ( 2.09199   0.277669 )
Epeak [keV] : 53.1969      ( -32.8273 277.671 )
Norm@50keV   : 5.54944E-02    ( -0.0216631   3629.44 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.15 using 59 PHA bins.
# Reduced chi-squared =         0.8209 for     55 degrees of freedom 
# Null hypothesis probability =   8.257383e-01
 
Photon flux (15-150 keV)    in 2.456 sec: 3.56229 ( 3.43771  -0.22299 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.69569e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.0413  (  )
R^2/D10^2   : 0.841140  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         116.01 using 59 PHA bins.
# Reduced chi-squared =         2.0353 for     57 degrees of freedom 
# Null hypothesis probability =   6.501269e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.337e-08   6.324e-09
25- 50  2.002e-07   1.350e-08
50-150  1.750e-07   2.348e-08
15-150  4.386e-07   3.107e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 97.2940       (-17.9772      25.2197)
Norm        : 16.0581       (-1.31671     1.47016)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.52 using 59 PHA bins.
# Reduced chi-squared =         0.7986 for     57 degrees of freedom 
# Null hypothesis probability =   8.629421e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.031e-07   1.023e-08
25- 50  1.772e-07   1.063e-08
50-150  2.827e-07   8.431e-08
15-150  5.630e-07   8.829e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.35345        (-1.1908      1.29224)
R1^2/D10^2  : 6.12441        (-2.84166      6.94258)
kT2 [keV]   : 21.7689        (-3.70372      5.97863)
R2^2/D10^2  : 6.78430E-02    (-0.0416298   0.0778253)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.51 using 59 PHA bins.
# Reduced chi-squared =         0.8639 for     55 degrees of freedom 
# Null hypothesis probability =   7.532104e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.019e-07   2.138e-08
25- 50  1.754e-07   2.995e-08
50-150  2.844e-07   8.887e-08
15-150  5.617e-07   9.529e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.112 sec. to    0.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.73797     ( -0.0942793   0.0956875 )
Norm@50keV  : 5.32565E-02    ( -0.00304897   0.00303154 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.35 using 59 PHA bins.
# Reduced chi-squared =          1.059 for     57 degrees of freedom 
# Null hypothesis probability =   3.556279e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.16950 ( -0.399233  0.399779 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.91772e-07 ( -2.91269e-08  2.92439e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.112 sec. to    0.888 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44193     ( -0.383126   0.334444 )
Epeak [keV] : 92.6700      ( -28.3909 -92.6701 )
Norm@50keV  : 7.56516E-02    ( -0.0238128   0.0422705 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.28 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     56 degrees of freedom 
# Null hypothesis probability =   3.913226e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.07467 ( -0.4142  0.41432 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.82497e-07 ( -3.1635e-08  3.1425e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.112 sec. to    0.888 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.95988   ( -8.36336   -4.95988 )
beta        : -1.79183    ( -0.107318   0.103778 )
Epeak [keV] : 22.2222      ( -7.89744 3.31546 )
Norm@50keV   : 1.34630E+04    ( -721.178   117568 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.43 using 59 PHA bins.
# Reduced chi-squared =          1.044 for     55 degrees of freedom 
# Null hypothesis probability =   3.853397e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.05450 ( -0.0545  -0.41818 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.82327e-07 ( -4.8232e-07  -3.1112e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.0186  (  )
R^2/D10^2   : 1.27132  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         145.15 using 59 PHA bins.
# Reduced chi-squared =         2.5464 for     57 degrees of freedom 
# Null hypothesis probability =   1.247447e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.570e-08   4.495e-09
25- 50  1.576e-07   1.050e-08
50-150  1.690e-07   1.970e-08
15-150  3.724e-07   2.470e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 129.664       (-27.9838      34.6857)
Norm        : 29.7998       (-1.99002     2.49111)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.82 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     57 degrees of freedom 
# Null hypothesis probability =   4.086974e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.733e-08   6.535e-09
25- 50  1.402e-07   1.065e-08
50-150  2.596e-07   7.375e-08
15-150  4.770e-07   8.940e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.47107        (-1.09221      1.24673)
R1^2/D10^2  : 11.0438        (-4.98712      10.6759)
kT2 [keV]   : 23.6243        (-3.69241      5.77149)
R2^2/D10^2  : 0.109564    (-0.0618156   0.104158)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.27 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     55 degrees of freedom 
# Null hypothesis probability =   2.909654e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.890e-08   1.569e-08
25- 50  1.398e-07   2.095e-08
50-150  2.606e-07   5.480e-08
15-150  4.792e-07   8.055e-08
Plot creation:
Wed Dec 30 02:47:28 EST 2015