batgrbproduct Analysis for Trigger=515015

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Feb 15 10:30:04 EST 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger515015/GCN5_download_cron
======================================================================

  Trigger: 00515015      Segment: 000

  BAT Trigger Time: 350959283.2   [s; MET]
      Trigger Stop: 350959287.296   [s; MET]
               UTC: 2012-02-15T00:41:15.308260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 30.0323071653144   Dec: 8.79177878164953  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.68
     Image Trigger?:     NO
     Rate S/N Ratio:     12.8062484748657  [ if not an image trigger ]
     Image S/N Ratio:    8.68

  Flight Position:   [ source = BAT ]
    RA: 30.0323071653144   Dec: 8.79177878164953  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 30.0622069489911   Dec: 8.79583865359866  [deg; J2000]  
        { 02h 00m 14.9s , +08d 47' 45.0" }
         +/- 1.95390617745373 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.1301680289785 [arcmin] (formal 1-sigma fit error)
    SNR: 11.6826578363493
 
  Angular difference between Flight and Ground position is 1.789555 arcmin
 
  Partial Coding Fraction: 0.8359375    [ including projection effects ]

  Duration
     T90: 26.5760000348091 +/- 8.50432734691697
        Measured from: -0.351999878883362
                   to: 26.2240001559258     [s; relative to TRIGTIME]
     T50: 10.4800000786781 +/- 4.38893155115813
        Measured from: 2.32000011205673
                   to: 12.8000001907349     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.85199999809265     
                   to: 5.85199999809265     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.50400000810623     
                   to: 28.2879999876022     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.193404   0.281237   0.167711   0.027830
           0.028962   0.029956   0.026500   0.022827 [error]
 Peak      0.027641   0.015685   0.024989   0.001050
           0.005380   0.005525   0.004948   0.004226 [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 6.41e-08 1.07e-07 1.35e-07 3.42e-07 4.01e-07 6.48e-07   erg/cm2
              Error 1.24e-08 1.37e-08 2.50e-08 1.29e-07 5.98e-08 1.53e-07   erg/cm2
Peak flux Power-law 2.21e-01 1.95e-01 1.18e-01 1.07e-01 5.80e-01 6.42e-01   ph/cm2/s
              Error 7.87e-02 4.49e-02 4.11e-02 7.50e-02 1.33e-01 1.51e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.84e-08 1.19e-07 1.36e-07 9.38e-08 4.08e-07 0.00e+00   erg/cm2
              Error 1.41e-08 1.89e-08 2.92e-08 1.75e-07 1.76e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.13e-01 2.00e-01 1.21e-01 8.20e-02 5.75e-01 6.15e-01   ph/cm2/s
              Error 9.31e-02 5.20e-02 4.57e-02 1.37e-01 1.70e-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 6.12e-01 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    1.660    0.218    -      -           1.45e-03 2.02e-04   47.350 57
CPL   0.767    1.037      62.0  476.8      4.49e-03 9.79e-03   44.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.727    0.436    -      -           4.33e-03 1.15e-03   88.040 57
CPL   1.489    1.401     107.4    0.0      5.73e-03 2.22e-02   87.960 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: 9.408000 sec.
T50 in the 50-300 keV band: 4.992000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   29.792   -1.504   28.288
T90    26.576   -0.352   26.224
T50    10.480    2.320   12.800
Peak    1.000    4.852    5.852

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   30.0622  +8.7958 0.0164   29.7   -8.5       0.6847    11.7  TRIG_00515015       
------------------------------------------
 
Foreground time interval of the image:
 -1.504  28.288 (delta_t =  29.792 [sec])
Background time interval of the image:
-239.200  -1.504 (delta_t = 237.696 [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   -1.504 sec. to   28.288 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66031     ( -0.214124   0.221119 )
Norm@50keV  : 1.44891E-03    ( -0.000203947   0.000200808 )
------------------------------------------------------------
# Chi-Squared =          47.35 using 59 PHA bins.
# Reduced chi-squared =         0.8308 for     57 degrees of freedom 
# Null hypothesis probability =   8.150363e-01
 
Photon flux (15-150 keV)    in 29.79 sec: 0.189840 ( -0.0242813  0.0242942 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.01033e-07 ( -5.92487e-08  6.03432e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.504 sec. to   28.288 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.767241     ( -1.16395   0.910491 )
Epeak [keV] : 61.9916      ( -16.0663 937.584 )
Norm@50keV  : 4.48951E-03    ( -0.00448958   0.015094 )
------------------------------------------------------------
# Chi-Squared =          44.57 using 59 PHA bins.
# Reduced chi-squared =         0.7959 for     56 degrees of freedom 
# Null hypothesis probability =   8.642843e-01
 
Photon flux (15-150 keV)    in 29.79 sec: 0.183966 ( -0.025045  0.025039 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.07742e-07 ( -9.50778e-08  2.56668e-07 ) ergs/cm2
 
Band function
Time interval is from   -1.504 sec. to   28.288 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.14681   ( -19.2062   -9.22338 )
beta        : -1.90735    ( -0.393811   0.288853 )
Epeak [keV] : 28.3356      ( -8.47584 5.52168 )
Norm@50keV   : 21.8615    ( -21.3482   16.9533 )
------------------------------------------------------------
# Chi-Squared =          44.03 using 59 PHA bins.
# Reduced chi-squared =         0.8005 for     55 degrees of freedom 
# Null hypothesis probability =   8.555027e-01
 
Photon flux (15-150 keV)    in 29.79 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]    : 12.3765  (-1.74919  2.07265)
R^2/D10^2   : 4.25592E-02  (-0.0183902   0.0315681)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          52.91 using 59 PHA bins.
# Reduced chi-squared =         0.9283 for     57 degrees of freedom 
# Null hypothesis probability =   6.291795e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.116e-08   9.658e-09
25- 50  1.342e-07   2.409e-08
50-150  1.262e-07   3.511e-08
15-150  3.015e-07   5.639e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 124.799       (-22.6107      -100.552)
Norm        : 0.805837       (-0.117018     0.146015)
------------------------------------------------------------
# Chi-Squared =          45.34 using 59 PHA bins.
# Reduced chi-squared =         0.7954 for     57 degrees of freedom 
# Null hypothesis probability =   8.672083e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.242e-08   1.135e-08
25- 50  1.124e-07   1.543e-08
50-150  2.045e-07   4.171e-08
15-150  3.793e-07   5.318e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.79124        (-2.8751      3.76955)
R1^2/D10^2  : 0.216596        (-0.151463      0.35839)
kT2 [keV]   : 20.3594        (-6.59838      48.9066)
R2^2/D10^2  : 4.90234E-03    (-0.00403001   0.0186249)
------------------------------------------------------------
# Chi-Squared =          44.19 using 59 PHA bins.
# Reduced chi-squared =         0.8035 for     55 degrees of freedom 
# Null hypothesis probability =   8.513782e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.786e-08   3.199e-08
25- 50  1.181e-07   6.135e-08
50-150  1.887e-07   1.086e-07
15-150  3.647e-07   1.859e-07

Peak spectrum fit

Power-law model
Time interval is from    4.852 sec. to    5.852 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72684     ( -0.411517   0.460336 )
Norm@50keV  : 4.32630E-03    ( -0.00118592   0.00111913 )
------------------------------------------------------------
# Chi-Squared =          88.04 using 59 PHA bins.
# Reduced chi-squared =          1.545 for     57 degrees of freedom 
# Null hypothesis probability =   5.206626e-03
 
Photon flux (15-150 keV)    in 1 sec: 0.580073 ( -0.133076  0.13314 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.99778e-08 ( -1.09601e-08  1.1305e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    4.852 sec. to    5.852 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48910     ( -1.89236   0.909954 )
Epeak [keV] : 107.425      ( -106.559 -106.559 )
Norm@50keV  : 5.72787E-03    ( -0.00575744   0.0387169 )
------------------------------------------------------------
# Chi-Squared =          87.96 using 59 PHA bins.
# Reduced chi-squared =          1.571 for     56 degrees of freedom 
# Null hypothesis probability =   4.096649e-03
 
Photon flux (15-150 keV)    in 1 sec: 0.574976 ( -0.137216  0.136138 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.42837e-08 ( -2.39771e-08  3.96193e-08 ) ergs/cm2
 
Band function
Time interval is from    4.852 sec. to    5.852 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.93533   ( 1.30221   1.68868 )
beta        : 10.00000    ( -1.97895e+15   -1.97895e+15 )
Epeak [keV] : 4.37883      ( -4.37883 -4.37883 )
Norm@50keV   : 1.90982E-19    ( -1.90982e-19   -1.90982e-19 )
------------------------------------------------------------
# Chi-Squared =         103.33 using 59 PHA bins.
# Reduced chi-squared =         1.8787 for     55 degrees of freedom 
# Null hypothesis probability =   8.705489e-05
 
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]    : 15.7039  (-3.68655  4.61758)
R^2/D10^2   : 5.51451E-02  (-0.0330888   0.0844574)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          92.71 using 59 PHA bins.
# Reduced chi-squared =          1.626 for     57 degrees of freedom 
# Null hypothesis probability =   1.957009e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.823e-09   1.368e-09
25- 50  1.169e-08   5.694e-09
50-150  2.000e-08   9.856e-09
15-150  3.452e-08   1.442e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 132.449       (-44.1716      -100.559)
Norm        : 2.43445       (-0.608012     0.870772)
------------------------------------------------------------
# Chi-Squared =          88.06 using 59 PHA bins.
# Reduced chi-squared =          1.545 for     57 degrees of freedom 
# Null hypothesis probability =   5.186512e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.309e-09   1.866e-09
25- 50  1.148e-08   2.893e-09
50-150  2.146e-08   5.430e-09
15-150  3.924e-08   9.325e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.54099        (-1.34141      1.7328)
R1^2/D10^2  : 11.9392        (-10.1041      69.0479)
kT2 [keV]   : 19.4118        (-4.71757      7.63624)
R2^2/D10^2  : 2.28973E-02    (-0.0156997   0.041866)
------------------------------------------------------------
# Chi-Squared =          82.97 using 59 PHA bins.
# Reduced chi-squared =          1.509 for     55 degrees of freedom 
# Null hypothesis probability =   8.749188e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.509e-09   4.644e-09
25- 50  9.678e-09   5.425e-09
50-150  2.285e-08   1.464e-08
15-150  4.003e-08   2.178e-08
Plot creation:
Wed Feb 15 10:55:48 EST 2012