batgrbproduct Analysis for Trigger=639278

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Apr 29 07:44:39 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger639278/GCN5_download_cron
======================================================================

  Trigger: 00639278      Segment: 000

  BAT Trigger Time: 451883537.024   [s; MET]
      Trigger Stop: 451883539.072   [s; MET]
               UTC: 2015-04-28T03:12:03.518520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 292.654499855063   Dec: 4.11579888955815  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.45
     Image Trigger?:     NO
     Rate S/N Ratio:     10.2469507659596  [ if not an image trigger ]
     Image S/N Ratio:    7.45

  Flight Position:   [ source = BAT ]
    RA: 292.654499855063   Dec: 4.11579888955815  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 292.661498520148   Dec: 4.11450756941834  [deg; J2000]  
        { 19h 30m 38.8s , +04d 06' 52.2" }
         +/- 1.30805731912952 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.553353761117654 [arcmin] (formal 1-sigma fit error)
    SNR: 20.7256758318826
 
  Angular difference between Flight and Ground position is 0.425943 arcmin
 
  Partial Coding Fraction: 0.4023438    [ including projection effects ]

  Duration
     T90: 130.827999949455 +/- 15.6676539154299
        Measured from: -34.4719998836517
                   to: 96.3560000658035     [s; relative to TRIGTIME]
     T50: 61.9239999651909 +/- 4.01896357086962
        Measured from: 0.892000138759613
                   to: 62.8160001039505     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.36000001430511     
                   to: 2.36000001430511     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -40.0600000023842     
                   to: 121.727999985218     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.857590   2.547260   1.547455   0.315469
           0.129967   0.118221   0.096907   0.078387 [error]
 Peak      0.028931   0.073271   0.054368   0.019095
           0.012714   0.012301   0.010222   0.007634 [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 7.67e-07 1.13e-06 1.24e-06 2.55e-06 3.91e-06 5.69e-06   erg/cm2
              Error 7.11e-08 6.51e-08 9.64e-08 4.12e-07 2.32e-07 4.96e-07   erg/cm2
Peak flux Power-law 4.56e-01 4.89e-01 3.72e-01 4.63e-01 1.49e+00 1.78e+00   ph/cm2/s
              Error 1.68e-01 1.14e-01 8.05e-02 2.01e-01 3.18e-01 3.50e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.67e-07 1.22e-06 1.27e-06 8.53e-07 3.68e-06 4.02e-06   erg/cm2
              Error 8.54e-08 8.26e-08 1.09e-07 4.55e-07 2.59e-07 5.18e-07   erg/cm2
Peak flux Cutoff-PL 3.35e-01 5.26e-01 4.26e-01 1.79e-01 1.41e+00 1.47e+00   ph/cm2/s
              Error 1.91e-01 1.36e-01 1.02e-01 2.47e-01 3.24e-01 3.85e-01   ph/cm2/s
 
Fluence        Band 6.54e-07 1.23e-06 1.25e-06 1.33e-06 3.69e-06 4.47e-06   erg/cm2
              Error 6.96e-08 9.64e-08 1.30e-07 -------- 2.62e-07 --------   erg/cm2
Peak flux      Band 3.60e-01 5.12e-01 4.20e-01 2.41e-01 1.44e+00 1.54e+00   ph/cm2/s
              Error -------- -------- 9.92e-02 -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.866    0.099    -      -           2.63e-03 1.56e-04   49.430 57
CPL   0.998    0.472      55.2    9.7      7.40e-03 4.45e-03   37.350 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.392    0.318    -      -           1.23e-02 2.42e-03   55.770 57
CPL   0.116    1.571      81.2 1454.3      4.76e-02 1.65e-01   53.000 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: 111.680000 sec.
T50 in the 50-300 keV band: 26.112000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  161.788  -40.060  121.728
T90   130.828  -34.472   96.356
T50    61.924    0.892   62.816
Peak    1.000    1.360    2.360

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  292.6615  +4.1145 0.0093   43.6 -154.6       4.1254    20.7  TRIG_00639278       
------------------------------------------
 
Foreground time interval of the image:
-40.060  27.877 (delta_t =  67.937 [sec])
Background time interval of the image:
-239.024 -40.060 (delta_t = 198.964 [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  -40.060 sec. to  121.728 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.86571     ( -0.0982042   0.0995054 )
Norm@50keV  : 2.63079E-03    ( -0.000156129   0.000155384 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.43 using 59 PHA bins.
# Reduced chi-squared =         0.8673 for     57 degrees of freedom 
# Null hypothesis probability =   7.515718e-01
 
Photon flux (15-150 keV)    in 161.8 sec: 0.372169 ( -0.0222308  0.0223028 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.91326e-06 ( -2.32081e-07  2.32856e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -40.060 sec. to  121.728 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.997902     ( -0.497994   0.446088 )
Epeak [keV] : 55.1986      ( -7.02069 12.2988 )
Norm@50keV  : 7.40413E-03    ( -0.00301038   0.00589843 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.35 using 59 PHA bins.
# Reduced chi-squared =         0.6670 for     56 degrees of freedom 
# Null hypothesis probability =   9.739598e-01
 
Photon flux (15-150 keV)    in 161.8 sec: 0.354959 ( -0.023705  0.023779 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67951e-06 ( -2.58524e-07  2.60255e-07 ) ergs/cm2
 
Band function
Time interval is from  -40.060 sec. to  121.728 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.891134   ( -0.522438   2.95597 )
beta        : -2.62393    ( 2.61917   0.619531 )
Epeak [keV] : 52.8756      ( -20.7361 13.0898 )
Norm@50keV   : 8.56154E-03    ( -0.00405653   0.941291 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.89 using 59 PHA bins.
# Reduced chi-squared =         0.6708 for     55 degrees of freedom 
# Null hypothesis probability =   9.711498e-01
 
Photon flux (15-150 keV)    in 161.8 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.68729e-06 ( -3.68616e-06  -2.56793e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.4528  (-0.78271  0.83757)
R^2/D10^2   : 7.62615E-02  (-0.0169139   0.0215919)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          83.64 using 59 PHA bins.
# Reduced chi-squared =          1.467 for     57 degrees of freedom 
# Null hypothesis probability =   1.232143e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.056e-07   4.522e-08
25- 50  1.332e-06   9.117e-08
50-150  1.272e-06   1.438e-07
15-150  3.010e-06   1.909e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 91.6695       (-15.4749      21.1319)
Norm        : 1.67321       (-0.141665     0.157005)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.48 using 59 PHA bins.
# Reduced chi-squared =         0.6751 for     57 degrees of freedom 
# Null hypothesis probability =   9.715708e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.068e-07   7.394e-08
25- 50  1.200e-06   7.006e-08
50-150  1.848e-06   5.623e-07
15-150  3.755e-06   5.517e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.93725        (-1.44567      1.59617)
R1^2/D10^2  : 0.422059        (-0.198064      0.502796)
kT2 [keV]   : 20.2781        (-3.5377      6.68388)
R2^2/D10^2  : 8.45125E-03    (-0.00590701   0.00789465)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.68 using 59 PHA bins.
# Reduced chi-squared =         0.6851 for     55 degrees of freedom 
# Null hypothesis probability =   9.640781e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.308e-07   1.635e-07
25- 50  1.246e-06   2.727e-07
50-150  1.768e-06   6.055e-07
15-150  3.644e-06   1.070e-06

Peak spectrum fit

Power-law model
Time interval is from    1.360 sec. to    2.360 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39248     ( -0.321979   0.314807 )
Norm@50keV  : 1.22762E-02    ( -0.00242087   0.00241462 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.77 using 59 PHA bins.
# Reduced chi-squared =         0.9784 for     57 degrees of freedom 
# Null hypothesis probability =   5.213105e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.49255 ( -0.315989  0.320237 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.18804e-07 ( -2.40444e-08  2.416e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.360 sec. to    2.360 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.115802     ( -1.83534   1.3065 )
Epeak [keV] : 81.2255      ( -23.8282 2884.79 )
Norm@50keV  : 4.76404E-02    ( -0.0476401   0.28334 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.00 using 59 PHA bins.
# Reduced chi-squared =         0.9464 for     56 degrees of freedom 
# Null hypothesis probability =   5.891931e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41234 ( -0.31943  0.32822 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1297e-07 ( -2.54606e-08  2.5348e-08 ) ergs/cm2
 
Band function
Time interval is from    1.360 sec. to    2.360 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.84861   ( -13.3965   -4.84861 )
beta        : -1.92425    ( -0.836303   0.520077 )
Epeak [keV] : 41.4788      ( -13.8695 9.61977 )
Norm@50keV   : 50.7841    ( -9.69059   444.252 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.65 using 59 PHA bins.
# Reduced chi-squared =         0.9392 for     55 degrees of freedom 
# Null hypothesis probability =   6.032215e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.43998 (    ) 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]    : 17.2721  (-3.61116  4.86618)
R^2/D10^2   : 0.110807  (-0.0648102   0.144682)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.34 using 59 PHA bins.
# Reduced chi-squared =         0.9709 for     57 degrees of freedom 
# Null hypothesis probability =   5.374901e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.702e-09   2.937e-09
25- 50  3.003e-08   1.164e-08
50-150  6.428e-08   2.587e-08
15-150  1.010e-07   4.022e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-85.598      -199.363)
Norm        : 6.35223       (-1.24474     1.24481)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.46 using 59 PHA bins.
# Reduced chi-squared =         0.9729 for     57 degrees of freedom 
# Null hypothesis probability =   5.331571e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.582e-08   9.260e-09
25- 50  3.043e-08   1.724e-08
50-150  6.673e-08   3.853e-08
15-150  1.130e-07   6.345e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.80518        (-9.80022      7.47663)
R1^2/D10^2  : 0.439840        (-0.393734      4.32692)
kT2 [keV]   : 27.5520        (-12.811      -27.5153)
R2^2/D10^2  : 1.52782E-02    (-0.0153335   0.102351)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.20 using 59 PHA bins.
# Reduced chi-squared =         0.9492 for     55 degrees of freedom 
# Null hypothesis probability =   5.821101e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.046e-08   6.350e-09
25- 50  3.202e-08   2.043e-08
50-150  7.280e-08   4.031e-08
15-150  1.153e-07   6.015e-08
Plot creation:
Wed Apr 29 07:48:46 EDT 2015