batgrbproduct Analysis for Trigger=517489

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Mar 12 08:13:14 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger517489/GCN5_download_cron
======================================================================

  Trigger: 00517489      Segment: 000

  BAT Trigger Time: 353171298.816   [s; MET]
      Trigger Stop: 353171299.84   [s; MET]
               UTC: 2012-03-11T15:08:10.834740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 258.501429204094   Dec: -13.0597932121755  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.22
     Image Trigger?:     NO
     Rate S/N Ratio:     16.1864140562386  [ if not an image trigger ]
     Image S/N Ratio:    7.22

  Flight Position:   [ source = BAT ]
    RA: 258.501429204094   Dec: -13.0597932121755  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 258.551774771999   Dec: -13.0622687768296  [deg; J2000]  
        { 17h 14m 12.4s , -13d 03' 44.2" }
         +/- 1.27362599045826 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.592481182601784 [arcmin] (formal 1-sigma fit error)
    SNR: 21.5307175788031
 
  Angular difference between Flight and Ground position is 2.946334 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 28.3599999547005 +/- 4.99613014581199
        Measured from: -9.61599987745285
                   to: 18.7440000772476     [s; relative to TRIGTIME]
     T50: 12.283999979496 +/- 1.35256939297699
        Measured from: -1.61999988555908
                   to: 10.6640000939369     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 9.0440000295639     
                   to: 10.0440000295639     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -13.7719999551773     
                   to: 21.6320000290871     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.680173   0.732726   0.352859   0.078009
           0.045472   0.044647   0.037731   0.035493 [error]
 Peak      0.063164   0.079668   0.022540   0.001793
           0.008203   0.008455   0.006749   0.006105 [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 2.18e-07 3.03e-07 3.12e-07 5.87e-07 1.02e-06 1.42e-06   erg/cm2
              Error 2.36e-08 2.19e-08 3.69e-08 1.39e-07 8.53e-08 1.77e-07   erg/cm2
Peak flux Power-law 6.90e-01 4.82e-01 2.21e-01 1.42e-01 1.46e+00 1.53e+00   ph/cm2/s
              Error 1.25e-01 6.88e-02 5.21e-02 6.04e-02 2.06e-01 2.18e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.06e-07 3.24e-07 3.01e-07 2.21e-07 9.50e-07 0.00e+00   erg/cm2
              Error 2.62e-08 3.07e-08 4.35e-08 1.04e-07 0.00e+00 0.00e+00   erg/cm2
Peak flux Cutoff-PL 5.49e-01 6.56e-01 1.83e-01 6.35e-03 1.39e+00 1.39e+00   ph/cm2/s
              Error 1.52e-01 1.09e-01 6.91e-02 1.50e-02 2.05e-01 2.05e-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 1.40e+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    1.959    0.135    -      -           3.13e-03 2.70e-04   57.540 57
CPL   1.371    0.642      44.6   57.9      6.82e-03 7.05e-03   54.620 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.121    0.242    -      -           9.19e-03 1.68e-03   81.420 57
CPL  -0.887    1.842      37.1    5.4      5.89e-01 5.69e+00   67.620 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: 21.760000 sec.
T50 in the 50-300 keV band: 11.264000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   35.404  -13.772   21.632
T90    28.360   -9.616   18.744
T50    12.284   -1.620   10.664
Peak    1.000    9.044   10.044

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  258.5518 -13.0623 0.0089   30.9   22.3       2.1805    21.5  TRIG_00517489       
------------------------------------------
 
Foreground time interval of the image:
-13.772  21.632 (delta_t =  35.404 [sec])
Background time interval of the image:
-239.816 -13.772 (delta_t = 226.044 [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  -13.772 sec. to   21.632 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95884     ( -0.133269   0.136957 )
Norm@50keV  : 3.13005E-03    ( -0.000271527   0.000267836 )
------------------------------------------------------------
# Chi-Squared =          57.54 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     57 degrees of freedom 
# Null hypothesis probability =   4.551996e-01
 
Photon flux (15-150 keV)    in 35.4 sec: 0.460841 ( -0.0337459  0.0337754 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.01999e-06 ( -8.4818e-08  8.58323e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -13.772 sec. to   21.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37134     ( -0.699979   0.584673 )
Epeak [keV] : 44.6161      ( -16.1719 99.5334 )
Norm@50keV  : 6.82055E-03    ( -0.00362423   0.0104769 )
------------------------------------------------------------
# Chi-Squared =          54.62 using 59 PHA bins.
# Reduced chi-squared =         0.9753 for     56 degrees of freedom 
# Null hypothesis probability =   5.273185e-01
 
Photon flux (15-150 keV)    in 35.4 sec: 0.449046 ( -0.03574  0.035673 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.50023e-07 ( -1.02207e-07  1.05694e-07 ) ergs/cm2
 
Band function
Time interval is from  -13.772 sec. to   21.632 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.98627   ( -5.15624   -3.70405 )
beta        : -2.14365    ( -0.404685   0.189924 )
Epeak [keV] : 24.8595      ( -4.04351 20.7215 )
Norm@50keV   : 90.6693    ( -90.7971   114.784 )
------------------------------------------------------------
# Chi-Squared =          50.97 using 59 PHA bins.
# Reduced chi-squared =         0.9267 for     55 degrees of freedom 
# Null hypothesis probability =   6.293152e-01
 
Photon flux (15-150 keV)    in 35.4 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]    : 10.0102  (-0.805519  0.88743)
R^2/D10^2   : 0.212474  (-0.0599929   0.0823136)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          83.26 using 59 PHA bins.
# Reduced chi-squared =          1.461 for     57 degrees of freedom 
# Null hypothesis probability =   1.322196e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.536e-07   2.034e-08
25- 50  3.823e-07   3.214e-08
50-150  2.001e-07   4.172e-08
15-150  7.360e-07   6.425e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 69.9704       (-14.4785      21.0579)
Norm        : 2.26002       (-0.264652     0.307768)
------------------------------------------------------------
# Chi-Squared =          54.51 using 59 PHA bins.
# Reduced chi-squared =         0.9564 for     57 degrees of freedom 
# Null hypothesis probability =   5.689810e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.052e-07   2.055e-08
25- 50  3.265e-07   2.598e-08
50-150  4.193e-07   7.537e-08
15-150  9.510e-07   9.009e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.37446        (-1.37622      1.28057)
R1^2/D10^2  : 0.556900        (-0.229628      0.528027)
kT2 [keV]   : 28.5322        (-10.2813      39.1021)
R2^2/D10^2  : 2.45194E-03    (-0.0022093   0.0111012)
------------------------------------------------------------
# Chi-Squared =          51.56 using 59 PHA bins.
# Reduced chi-squared =         0.9374 for     55 degrees of freedom 
# Null hypothesis probability =   6.068762e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.926e-07   3.696e-08
25- 50  3.428e-07   7.239e-08
50-150  4.575e-07   2.184e-07
15-150  9.929e-07   2.834e-07

Peak spectrum fit

Power-law model
Time interval is from    9.044 sec. to   10.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.12101     ( -0.232306   0.251141 )
Norm@50keV  : 9.19288E-03    ( -0.00169825   0.00166959 )
------------------------------------------------------------
# Chi-Squared =          81.42 using 59 PHA bins.
# Reduced chi-squared =          1.428 for     57 degrees of freedom 
# Null hypothesis probability =   1.857328e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.46147 ( -0.205889  0.205895 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.55813e-08 ( -1.41693e-08  1.45622e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    9.044 sec. to   10.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.886799     ( -2.11704   1.56657 )
Epeak [keV] : 37.1131      ( -5.21014 5.59888 )
Norm@50keV  : 0.589438    ( -0.615385   10.7734 )
------------------------------------------------------------
# Chi-Squared =          67.62 using 59 PHA bins.
# Reduced chi-squared =          1.207 for     56 degrees of freedom 
# Null hypothesis probability =   1.374732e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.39309 ( -0.20421  0.20511 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.36769e-08 ( -1.17579e-08  1.32587e-08 ) ergs/cm2
 
Band function
Time interval is from    9.044 sec. to   10.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.829176   ( -1.48646   2.19424 )
beta        : -9.37167    ( 10   19.9995 )
Epeak [keV] : 37.3170      ( -5.05865 5.46083 )
Norm@50keV   : 0.538005    ( -0.538148   18.406 )
------------------------------------------------------------
# Chi-Squared =          67.63 using 59 PHA bins.
# Reduced chi-squared =          1.230 for     55 degrees of freedom 
# Null hypothesis probability =   1.180254e-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]    : 9.57009  (-1.12123  1.24502)
R^2/D10^2   : 0.886033  (-0.340454   0.549841)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          67.85 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     57 degrees of freedom 
# Null hypothesis probability =   1.539508e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.626e-08   3.795e-09
25- 50  3.793e-08   7.260e-09
50-150  1.741e-08   6.165e-09
15-150  7.160e-08   1.306e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 50.0637       (-13.6801      22.3589)
Norm        : 8.56337       (-1.70415     2.18799)
------------------------------------------------------------
# Chi-Squared =          73.74 using 59 PHA bins.
# Reduced chi-squared =          1.294 for     57 degrees of freedom 
# Null hypothesis probability =   6.712253e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.094e-08   3.840e-09
25- 50  3.009e-08   4.860e-09
50-150  2.925e-08   1.047e-08
15-150  8.029e-08   1.722e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.75383        (-2.71026      -2.71026)
R1^2/D10^2  : 25.1319        (-26.9571      -26.9571)
kT2 [keV]   : 9.98957        (-1.38436      -9.99323)
R2^2/D10^2  : 0.719890    (-0.719156   0.616187)
------------------------------------------------------------
# Chi-Squared =          67.12 using 59 PHA bins.
# Reduced chi-squared =          1.220 for     55 degrees of freedom 
# Null hypothesis probability =   1.266621e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.733e-08   9.425e-09
25- 50  3.660e-08   2.045e-08
50-150  1.889e-08   1.005e-08
15-150  7.282e-08   4.022e-08
Plot creation:
Mon Mar 12 09:50:59 EDT 2012