batgrbproduct Analysis for Trigger=579982

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Dec  4 11:02:18 EST 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger579982/batgroup_hand_proc
======================================================================

  Trigger: 00579982      Segment: 000

  BAT Trigger Time: 407689940.672   [s; MET]
      Trigger Stop: 407689943.744   [s; MET]
               UTC: 2013-12-02T15:12:09.327060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 344.05606070492   Dec: -21.6577101512323  [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:     10.8627804912002  [ if not an image trigger ]
     Image S/N Ratio:    7.35

  Flight Position:   [ source = BAT ]
    RA: 344.05606070492   Dec: -21.6577101512323  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 344.008489540281   Dec: -21.6439463344936  [deg; J2000]  
        { 22h 56m 02.0s , -21d 38' 38.2" }
         +/- 2.06845242270361 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.00060197746357 [arcmin] (formal 1-sigma fit error)
    SNR: 10.7695159982716
 
  Angular difference between Flight and Ground position is 2.778466 arcmin
 
  Partial Coding Fraction: 0.6328125    [ including projection effects ]

  Duration
     T90: 33.3920000195503 +/- 11.6454062950449
        Measured from: -0.631999850273132
                   to: 32.7600001692772     [s; relative to TRIGTIME]
     T50: 13.1040000319481 +/- 5.90337123745482
        Measured from: 2.2800001502037
                   to: 15.3840001821518     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.62800002098083     
                   to: 2.62800002098083     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.60799998044968     
                   to: 37.7039999961853     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.270219   0.329647   0.289877   0.035595
           0.044994   0.046416   0.040445   0.034642 [error]
 Peak      0.018951   0.030023   0.021335   0.015202
           0.007525   0.007534   0.007046   0.005722 [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 9.00e-08 1.57e-07 2.08e-07 5.65e-07 6.07e-07 1.02e-06   erg/cm2
              Error 2.14e-08 2.26e-08 4.01e-08 2.35e-07 9.53e-08 2.66e-07   erg/cm2
Peak flux Power-law 2.02e-01 2.15e-01 1.62e-01 1.99e-01 6.54e-01 7.77e-01   ph/cm2/s
              Error 1.04e-01 6.83e-02 5.50e-02 1.44e-01 1.90e-01 2.20e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.99e-08 1.57e-07 2.08e-07 5.61e-07 6.07e-07 1.02e-06   erg/cm2
              Error 2.12e-08 2.39e-08 4.09e-08 4.10e-07 9.61e-08 3.41e-07   erg/cm2
Peak flux Cutoff-PL 2.04e-01 2.16e-01 1.61e-01 1.95e-01 6.56e-01 7.76e-01   ph/cm2/s
              Error 1.08e-01 7.04e-02 5.80e-02 1.84e-01 1.90e-01 2.37e-01   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    1.590    0.254    -      -           1.65e-03 2.39e-04   57.650 57
CPL   1.588    1.448    10000.0    0.0      1.65e-03 -7.05e-04   57.660 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    1.405    0.515    -      -           5.36e-03 1.51e-03   49.320 57
CPL   1.405    1.111    9999.4    0.0      5.38e-03 1.48e-02   49.320 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: 8.448000 sec.
T50 in the 50-300 keV band: 4.416000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   39.312   -1.608   37.704
T90    33.392   -0.632   32.760
T50    13.104    2.280   15.384
Peak    1.000    1.628    2.628

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  344.0085   -21.6439   0.0178    37.8010  -164.0700         0.9553240     10.770 TRIG_00579982                 
 
Foreground time interval of the image:
 -1.608  37.704 (delta_t =  39.312 [sec])
Background time interval of the image:
-239.672 -56.956 (delta_t = 182.716 [sec])
-55.672  -1.608 (delta_t =  54.064 [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   -1.608 sec. to   37.704 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58968     ( -0.251141   0.2573 )
Norm@50keV  : 1.64830E-03    ( -0.000240815   0.000237525 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.65 using 59 PHA bins.
# Reduced chi-squared =          1.011 for     57 degrees of freedom 
# Null hypothesis probability =   4.508921e-01
 
Photon flux (15-150 keV)    in 39.31 sec: 0.211143 ( -0.0300551  0.0301363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.06742e-07 ( -9.47799e-08  9.58523e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.608 sec. to   37.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58765     ( -0.851042   2.04459 )
Epeak [keV] : 1.00000E+04      (   )
Norm@50keV  : 1.65236E-03    ( -0.000242641   -0.00165239 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.66 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     56 degrees of freedom 
# Null hypothesis probability =   4.137907e-01
 
Photon flux (15-150 keV)    in 39.31 sec: 0.211158 ( -0.030137  0.030016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.06907e-07 ( -9.7135e-08  9.49651e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.608 sec. to   37.704 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32253   ( 1.32253   1.32253 )
beta        : -1.58966    ( 1.58967   0.251329 )
Epeak [keV] : 28.1544      ( -28.1164 -28.1164 )
Norm@50keV   : 3.21845E-03    ( -0.00179882   0.253091 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.65 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     55 degrees of freedom 
# Null hypothesis probability =   3.773629e-01
 
Photon flux (15-150 keV)    in 39.31 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]    : 14.9562  (-2.66085  3.31844)
R^2/D10^2   : 2.32654E-02  (-0.0117514   0.0233932)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.59 using 59 PHA bins.
# Reduced chi-squared =          1.309 for     57 degrees of freedom 
# Null hypothesis probability =   5.889426e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.285e-08   1.264e-08
25- 50  1.698e-07   3.960e-08
50-150  2.582e-07   7.223e-08
15-150  4.708e-07   1.008e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 198.152       (-98.2373      -198.306)
Norm        : 0.853202       (-0.118497     0.144196)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.28 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     57 degrees of freedom 
# Null hypothesis probability =   4.279848e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.358e-08   4.782e-08
25- 50  1.607e-07   8.870e-08
50-150  3.517e-07   1.942e-07
15-150  5.959e-07   3.267e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.80555        (-2.0659      3.56172)
R1^2/D10^2  : 0.960990        (-0.829027      14.4217)
kT2 [keV]   : 22.4094        (-5.77033      16.4074)
R2^2/D10^2  : 4.84660E-03    (-0.00410123   0.00958313)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.40 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     55 degrees of freedom 
# Null hypothesis probability =   3.517293e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.573e-08   5.409e-08
25- 50  1.401e-07   6.188e-08
50-150  3.537e-07   2.026e-07
15-150  5.895e-07   2.557e-07

Peak spectrum fit

Power-law model
Time interval is from    1.628 sec. to    2.628 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40544     ( -0.513541   0.516561 )
Norm@50keV  : 5.36282E-03    ( -0.0015099   0.00150215 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.32 using 59 PHA bins.
# Reduced chi-squared =         0.8652 for     57 degrees of freedom 
# Null hypothesis probability =   7.554352e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.653898 ( -0.189925  0.19097 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.17615e-08 ( -1.57798e-08  1.59551e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.628 sec. to    2.628 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40519     ( -1.70598   0.516306 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 5.38076E-03    ( -0.00151766   0.0279915 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.32 using 59 PHA bins.
# Reduced chi-squared =         0.8807 for     56 degrees of freedom 
# Null hypothesis probability =   7.240091e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.655639 ( -0.191569  0.189011 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.15338e-08 ( -1.56254e-08  1.61069e-08 ) ergs/cm2
 
Band function
Time interval is from    1.628 sec. to    2.628 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.14937   ( 1.15081   1.15081 )
beta        : -1.40504    ( 1.40541   0.514261 )
Epeak [keV] : 40.3083      ( -39.3144 -39.3144 )
Norm@50keV   : 9.94840E-03    ( -0.00609444   0.923081 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.32 using 59 PHA bins.
# Reduced chi-squared =         0.8966 for     55 degrees of freedom 
# Null hypothesis probability =   6.906669e-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]    : 16.7823  (-6.56044  11.9884)
R^2/D10^2   : 4.98818E-02  (-0.0484539   0.221586)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.57 using 59 PHA bins.
# Reduced chi-squared =         0.9575 for     57 degrees of freedom 
# Null hypothesis probability =   5.666079e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.871e-09   1.848e-09
25- 50  1.257e-08   7.745e-09
50-150  2.518e-08   1.637e-08
15-150  4.062e-08   2.604e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-119.308      -199.363)
Norm        : 2.70773       (-0.761503     0.761503)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.88 using 59 PHA bins.
# Reduced chi-squared =         0.8752 for     57 degrees of freedom 
# Null hypothesis probability =   7.367299e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.742e-09   4.029e-09
25- 50  1.297e-08   7.915e-09
50-150  2.845e-08   1.750e-08
15-150  4.816e-08   2.837e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.08053        (-5.2436      6.91138)
R1^2/D10^2  : 0.465506        (-0.404759      33.0912)
kT2 [keV]   : 42.6555        (-39.8058      -42.6526)
R2^2/D10^2  : 1.96824E-03    (-0.001837   0.0318979)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.13 using 59 PHA bins.
# Reduced chi-squared =         0.8932 for     55 degrees of freedom 
# Null hypothesis probability =   6.974118e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.978e-09   3.650e-09
25- 50  1.292e-08   7.950e-09
50-150  3.429e-08   1.930e-08
15-150  5.319e-08   2.541e-08
Plot creation:
Wed Dec  4 11:24:48 EST 2013