batgrbproduct Analysis for Trigger=568417

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Aug 29 18:10:40 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger568417/batgroup_hand_proc
======================================================================

  Trigger: 00568417      Segment: 000

  BAT Trigger Time: 399447824   [s; MET]
      Trigger Stop: 399447888   [s; MET]
               UTC: 2013-08-29T05:43:33.032660    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 182.436503188924   Dec: 46.5315062760872  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    13.79
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    13.79

  Flight Position:   [ source = BAT ]
    RA: 182.436503188924   Dec: 46.5315062760872  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 182.431428880595   Dec: 46.5230128926365  [deg; J2000]  
        { 12h 09m 43.5s , +46d 31' 22.8" }
         +/- 1.28656638035507 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.539599871486605 [arcmin] (formal 1-sigma fit error)
    SNR: 21.2220174740271
 
  Angular difference between Flight and Ground position is 0.550975 arcmin
 
  Partial Coding Fraction: 0.84375    [ including projection effects ]

  Duration
     T90: 47.5079998970032 +/- 8.9696958939664
        Measured from: 35.9520000219345
                   to: 83.4599999189377     [s; relative to TRIGTIME]
     T50: 20.4439999461174 +/- 5.19433615394216
        Measured from: 44.6399999856949
                   to: 65.0839999318123     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 50.9399999976158     
                   to: 51.9399999976158     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 27.0720000267029     
                   to: 91.8920000195503     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.442407   0.728937   0.566987   0.093865
           0.041671   0.042202   0.038798   0.036436 [error]
 Peak      0.023058   0.026419   0.020624   0.007989
           0.005278   0.005335   0.004959   0.004562 [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 1.48e-07 2.89e-07 4.36e-07 1.43e-06 1.22e-06 2.30e-06   erg/cm2
              Error 1.80e-08 2.10e-08 3.86e-08 2.78e-07 9.42e-08 3.06e-07   erg/cm2
Peak flux Power-law 1.99e-01 1.99e-01 1.39e-01 1.54e-01 5.98e-01 6.91e-01   ph/cm2/s
              Error 7.15e-02 4.44e-02 4.13e-02 9.55e-02 1.29e-01 1.55e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.38e-07 3.00e-07 4.46e-07 7.71e-07 1.18e-06 1.65e-06   erg/cm2
              Error 2.18e-08 2.54e-08 4.20e-08 5.67e-07 1.08e-07 5.80e-07   erg/cm2
Peak flux Cutoff-PL 2.00e-01 1.99e-01 1.39e-01 5.98e-01 6.89e-01 0.00e+00   ph/cm2/s
              Error 7.12e-02 4.68e-02 4.12e-02 1.29e-01 1.69e-01 0.00e+00   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.406    0.122    -      -           1.96e-03 1.34e-04   59.750 57
CPL   0.989    0.508     122.6  -39.4      3.16e-03 1.98e-03   57.690 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.514    0.397    -      -           4.77e-03 1.10e-03   52.220 57
CPL   1.524    0.451    9999.4    0.0      4.76e-03 9.52e-03   52.230 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: 39.488000 sec.
T50 in the 50-300 keV band: 13.376000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.820   27.072   91.892
T90    47.508   35.952   83.460
T50    20.444   44.640   65.084
Peak    1.000   50.940   51.940

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  182.4314    46.5230   0.0091    25.5746   -32.5726         1.9961165     21.222 TRIG_00568417                 
 
Foreground time interval of the image:
 27.072  91.892 (delta_t =  64.820 [sec])
Background time interval of the image:
-239.000 -216.114 (delta_t =  22.886 [sec])
-214.000 -201.415 (delta_t =  12.585 [sec])
-198.000  27.072 (delta_t = 225.072 [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   27.072 sec. to   91.892 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40564     ( -0.121777   0.122131 )
Norm@50keV  : 1.95679E-03    ( -0.00013471   0.000134198 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.75 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     57 degrees of freedom 
# Null hypothesis probability =   3.759285e-01
 
Photon flux (15-150 keV)    in 64.82 sec: 0.238607 ( -0.0165105  0.0165347 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2242e-06 ( -9.3871e-08  9.46275e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   27.072 sec. to   91.892 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.988556     ( -0.553596   0.462829 )
Epeak [keV] : 122.572      ( -43.8452 -122.572 )
Norm@50keV  : 3.15617E-03    ( -0.00125922   0.00270541 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.69 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     56 degrees of freedom 
# Null hypothesis probability =   4.124247e-01
 
Photon flux (15-150 keV)    in 64.82 sec: 0.233360 ( -0.017641  0.017604 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.18155e-06 ( -1.07744e-07  1.07523e-07 ) ergs/cm2
 
Band function
Time interval is from   27.072 sec. to   91.892 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.547842   ( 0.642859   3.75939 )
beta        : -1.61704    ( 1.62212   0.258641 )
Epeak [keV] : 70.3832      ( -69.7595 388.249 )
Norm@50keV   : 5.88412E-03    ( -0.00610055   0.788159 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.10 using 59 PHA bins.
# Reduced chi-squared =          1.038 for     55 degrees of freedom 
# Null hypothesis probability =   3.969070e-01
 
Photon flux (15-150 keV)    in 64.82 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]    : 15.6051  (-1.31947  1.47639)
R^2/D10^2   : 2.38281E-02  (-0.0063959   0.00856238)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          93.14 using 59 PHA bins.
# Reduced chi-squared =          1.634 for     57 degrees of freedom 
# Null hypothesis probability =   1.779431e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.818e-08   1.063e-08
25- 50  3.219e-07   3.179e-08
50-150  5.426e-07   7.111e-08
15-150  9.427e-07   8.329e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 0.982410       (-0.0664455     0.0664422)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.88 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     57 degrees of freedom 
# Null hypothesis probability =   3.063013e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.586e-07   1.251e-08
25- 50  3.050e-07   3.734e-08
50-150  6.690e-07   1.971e-07
15-150  1.133e-06   2.178e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.46941        (-2.07828      2.23496)
R1^2/D10^2  : 0.122762        (-0.0591368      0.163503)
kT2 [keV]   : 29.9216        (-7.6929      21.6263)
R2^2/D10^2  : 1.92266E-03    (-0.00156267   0.00381493)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.03 using 59 PHA bins.
# Reduced chi-squared =          1.055 for     55 degrees of freedom 
# Null hypothesis probability =   3.643374e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.248e-07   3.621e-08
25- 50  3.146e-07   1.092e-07
50-150  7.474e-07   3.490e-07
15-150  1.187e-06   3.939e-07

Peak spectrum fit

Power-law model
Time interval is from   50.940 sec. to   51.940 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51429     ( -0.394457   0.400237 )
Norm@50keV  : 4.76900E-03    ( -0.00111125   0.00108134 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.22 using 59 PHA bins.
# Reduced chi-squared =         0.9162 for     57 degrees of freedom 
# Null hypothesis probability =   6.545176e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.597676 ( -0.12889  0.129009 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.51372e-08 ( -1.13762e-08  1.17647e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   50.940 sec. to   51.940 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52360     ( -0.50685   0.395336 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 4.75503E-03    ( -0.0011112   0.0179346 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.23 using 59 PHA bins.
# Reduced chi-squared =         0.9327 for     56 degrees of freedom 
# Null hypothesis probability =   6.184009e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.597730 ( -0.129027  0.128703 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   50.940 sec. to   51.940 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96067   ( -4.96067   -4.96067 )
beta        : -1.71555    ( -0.657574   0.48008 )
Epeak [keV] : 25.7011      ( -25.7011 7.54875 )
Norm@50keV   : 433.565    ( -91.792   3.0539e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.9243 for     55 degrees of freedom 
# Null hypothesis probability =   6.344153e-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]    : 12.3191  (-4.13162  7.16357)
R^2/D10^2   : 0.128278  (-0.0987627   0.430142)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.02 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     57 degrees of freedom 
# Null hypothesis probability =   3.334691e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.125e-09   2.076e-09
25- 50  1.338e-08   5.884e-09
50-150  1.242e-08   6.860e-09
15-150  2.993e-08   1.396e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.357       (-123.76      -199.361)
Norm        : 2.43230       (-0.522353     0.522798)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.56 using 59 PHA bins.
# Reduced chi-squared =         0.9220 for     57 degrees of freedom 
# Null hypothesis probability =   6.423301e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.057e-09   3.577e-09
25- 50  1.165e-08   6.840e-09
50-150  2.555e-08   1.469e-08
15-150  4.326e-08   2.491e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.67307        (-2.12766      3.1584)
R1^2/D10^2  : 0.937341        (-0.699155      1.37824)
kT2 [keV]   : 37.2976        (-18.0106      -37.3035)
R2^2/D10^2  : 2.61120E-03    (-0.00249293   0.00682521)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.11 using 59 PHA bins.
# Reduced chi-squared =         0.9111 for     55 degrees of freedom 
# Null hypothesis probability =   6.616152e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.856e-09   4.015e-09
25- 50  1.122e-08   6.485e-09
50-150  2.985e-08   1.773e-08
15-150  4.792e-08   2.494e-08
Plot creation:
Thu Aug 29 18:39:26 EDT 2013