batgrbproduct Analysis for Trigger=349447

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Fri Apr 17 19:45:05 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger349447/GCN5_download_cron
======================================================================

  Trigger: 00349447      Segment: 000

  BAT Trigger Time: 261667048.46   [s; MET]
      Trigger Stop: 261667048.524   [s; MET]
               UTC: 2009-04-17T13:17:23.793440    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 34.9949091846811   Dec: -7.18107713636088  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.63
     Image Trigger?:     NO
     Rate S/N Ratio:     18.3030052177231  [ if not an image trigger ]
     Image S/N Ratio:    7.63

  Flight Position:   [ source = BAT ]
    RA: 34.9949091846811   Dec: -7.18107713636088  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 34.9930867460755   Dec: -7.14148300043235  [deg; J2000]  
        { 02h 19m 58.3s , -07d 08' 29.3" }
         +/- 2.74850714190486 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.45534897242096 [arcmin] (formal 1-sigma fit error)
    SNR: 7.1752516530967
 
  Angular difference between Flight and Ground position is 2.378124 arcmin
 
  Partial Coding Fraction: 0.3007812    [ including projection effects ]

  Duration
     T90: 0.0719999969005585 +/- 0.017888553416166
        Measured from: 8.94069671630859e-08
                   to: 0.0720000863075256     [s; relative to TRIGTIME]
     T50: 0.0320000052452087 +/- 0.0178885400881622
        Measured from: 0.0120000839233398
                   to: 0.0440000891685486     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.462000012397766     
                   to: 0.537999987602234     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00400000810623169     
                   to: 0.0760000050067902     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.015623   0.018391   0.026433   0.001753
           0.004017   0.004290   0.004049   0.002569 [error]
 Peak      0.015606   0.019813   0.027300   0.000857
           0.004071   0.004368   0.004090   0.002632 [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 5.65e-09 4.26e-09 2.14e-09 1.55e-09 1.28e-08 1.36e-08   erg/cm2
              Error 1.80e-09 1.21e-09 8.48e-10 9.78e-10 3.61e-09 3.91e-09   erg/cm2
Peak flux Power-law 2.32e+00 9.78e-01 2.44e-01 7.45e-02 3.59e+00 3.62e+00   ph/cm2/s
              Error 7.31e-01 2.83e-01 1.01e-01 4.79e-02 1.03e+00 1.03e+00   ph/cm2/s
 
Fluence   Cutoff-PL 3.98e-09 9.01e-09 5.75e-09 5.90e-10 1.93e-08 1.89e-08   erg/cm2
              Error 2.28e-09 2.65e-09 2.81e-09 4.34e-10 4.92e-09 5.02e-09   erg/cm2
Peak flux Cutoff-PL 1.52e+00 2.02e+00 7.01e-01 3.60e-02 4.28e+00 4.28e+00   ph/cm2/s
              Error 1.23e+00 5.49e-01 3.45e-01 2.74e-02 1.14e+00 1.14e+00   ph/cm2/s
 
Fluence        Band 2.12e-09 9.30e-09 6.37e-09 5.51e-10 1.96e-08 1.95e-08   erg/cm2
              Error 2.35e-09 2.33e-09 2.88e-10 4.84e-09 4.93e-09 0.00e+00   erg/cm2
Peak flux      Band 1.01e+00 2.04e+00 7.29e-01 3.56e-02 4.23e+00 3.96e+00   ph/cm2/s
              Error 5.02e-01 2.59e-01 3.31e-02 1.08e+00 9.85e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.988    0.357    -      -           1.34e-02 4.45e-03   77.815 57
CPL  -0.646    2.108      40.3   12.8      1.07e+00 2.65e+00   67.393  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.003    0.376    -      -           1.30e-02 4.61e-03   82.265 57
CPL  -0.895    1.867      41.0   12.4      1.42e+00 4.81e+00   70.151  0
 
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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.080   -0.004    0.076
T90     0.072    0.000    0.072
T50     0.032    0.012    0.044
Peak    1.000   -0.462    0.538

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   34.9931  -7.1415 0.0268   33.9  -98.3       0.0583     7.2  TRIG_00349447       
------------------------------------------
 
Foreground time interval of the image:
 -0.004   0.076 (delta_t =   0.080 [sec])
Background time interval of the image:
-239.460  -0.004 (delta_t = 239.456 [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   -0.004 sec. to    0.076 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.98799     ( -0.312030   0.402060 )
Norm@50keV  : 1.336790E-02    ( -4.574714E-03   4.335061E-03) )
------------------------------------------------------------
 Chi-Squared =      77.81496     using    59 PHA bins.
 Reduced chi-squared =      1.365175     for     57 degrees of freedom
 Null hypothesis probability = 3.488E-02
 
Photon flux (15-150 keV)    in 8.0000E-02 sec: 3.64445 ( -1.05721  1.05679 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27794e-08 ( -3.60784e-09  3.60544e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.004 sec. to    0.076 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.645580     ( -2.35442   1.86117 )
Epeak [keV] : 40.3273      ( -17.4970 8.02527 )
Norm@50keV  : 1.07389    ( -1.07389   4.22844 )
------------------------------------------------------------
 Chi-Squared =      67.39339     using    59 PHA bins.
 but latest trial   8.86750     gives Chi-Squared =   4.03936
 Reduced chi-squared =      1.203453     for     56 degrees of freedom
 Null hypothesis probability = 0.142
 
Photon flux (15-150 keV)    in 8.0000E-02 sec: 4.31650 ( -1.18054  1.16225 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.92614e-08 ( -4.9188e-09  4.92784e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.004 sec. to    0.076 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.313096   ( -1.09578   1.14819 )
beta        : -9.32874    ( -0.671256   5.25632 )
Epeak [keV] : 34.2493      ( -6.05465 17.8016 )
Norm@50keV   : 0.385955    ( -0.295816   11.5295 )
------------------------------------------------------------
 Chi-Squared =      68.07061     using    59 PHA bins.
 Reduced chi-squared =      1.237647     for     55 degrees of freedom
 Null hypothesis probability = 0.111
 
Photon flux (15-150 keV)    in 8.0000E-02 sec: 4.24268 ( -1.12187  1.09878 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.9559e-08 ( -4.83728e-09  4.83656e-09 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.5935       -1.5777  1.2804
R^2/D10^2   : 1.36486  -0.587565   1.0832
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 Chi-Squared =      67.51380     using    59 PHA bins.
 Reduced chi-squared =      1.184453     for     57 degrees of freedom
 Null hypothesis probability = 0.161
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.093e-09   1.161e-09
25- 50  9.340e-09   2.837e-09
50-150  7.372e-09   2.732e-09
15-150  1.980e-08   6.023e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 32.9827       -7.768      8.498
Norm        : 33.0920       -10.9382      13.1597
------------------------------------------------------------
 Chi-Squared =      70.56631     using    59 PHA bins.
 Reduced chi-squared =      1.238006     for     57 degrees of freedom
 Null hypothesis probability = 0.107
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.638e-09   1.640e-09
25- 50  6.775e-09   1.720e-09
50-150  4.186e-09   1.711e-09
15-150  1.660e-08   4.638e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.27000       -3.2699      11.3985
R1^2/D10^2  : 94.4324       -94.4324     3187.68
kT2 [keV]   : 12.1456       -1.6406      0.938
R2^2/D10^2  : 0.975719      -0.975719    1e+24
------------------------------------------------------------
 Chi-Squared =      64.89537     using    59 PHA bins.
 but latest trial   14.6700     gives Chi-Squared =   2.62032
 but latest trial   13.9453     gives Chi-Squared =   3.69918
 Reduced chi-squared =      1.179916     for     55 degrees of freedom
 Null hypothesis probability = 0.170
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.803e-09   2.232e-09
25- 50  8.242e-09   3.038e-09
50-150  6.958e-09   3.051e-09
15-150  2.000e-08   5.846e-09

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.004 sec. to    0.080 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.00255     ( -0.321169   0.430314 )
Norm@50keV  : 1.302365E-02    ( -4.743433E-03   4.468077E-03) )
------------------------------------------------------------
 Chi-Squared =      82.26451     using    59 PHA bins.
 Reduced chi-squared =      1.443237     for     57 degrees of freedom
 Null hypothesis probability = 1.591E-02
 
Photon flux (15-150 keV)    in 8.4000E-02 sec: 3.58824 ( -1.0275  1.02738 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31601e-08 ( -3.76648e-09  3.76303e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.004 sec. to    0.080 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.894689     ( -1.86420   1.87079 )
Epeak [keV] : 41.0107      ( -15.0682 9.66080 )
Norm@50keV  : 1.42293    ( -1.24244   8.37727 )
------------------------------------------------------------
 Chi-Squared =      70.15112     using    59 PHA bins.
 but latest trial  -4.51290     gives Chi-Squared =   4.01689
 Reduced chi-squared =      1.252699     for     56 degrees of freedom
 Null hypothesis probability = 9.672E-02
 
Photon flux (15-150 keV)    in 8.4000E-02 sec: 4.27687 ( -1.14997  1.12897 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.02374e-08 ( -5.07646e-09  5.08998e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.004 sec. to    0.080 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.81692   ( -0.298784   0.179833 )
beta        : -8.93339    ( -1.06661   5.61946 )
Epeak [keV] : 7.76613      ( -27.0468 7.59644 )
Norm@50keV   : 6.662115E-02    ( -0.456175   20.0639 )
------------------------------------------------------------
 Chi-Squared =      76.01917     using    59 PHA bins.
 Reduced chi-squared =      1.382167     for     55 degrees of freedom
 Null hypothesis probability = 3.174E-02
 
Photon flux (15-150 keV)    in 8.4000E-02 sec: 4.23048 ( -1.09812  1.0522 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05437e-08 ( -5.04613e-09  5.01018e-09 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.4455       -1.64043  1.3106
R^2/D10^2   : 1.43542  -0.610012   1.18044
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 Chi-Squared =      69.98379     using    59 PHA bins.
 Reduced chi-squared =      1.227786     for     57 degrees of freedom
 Null hypothesis probability = 0.116
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.323e-09   1.126e-09
25- 50  9.878e-09   3.414e-09
50-150  7.529e-09   2.670e-09
15-150  2.073e-08   6.495e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 32.3234       -8.0307      8.6341
Norm        : 33.3164       -10.773      13.279
------------------------------------------------------------
 Chi-Squared =      74.18104     using    59 PHA bins.
 Reduced chi-squared =      1.301422     for     57 degrees of freedom
 Null hypothesis probability = 6.275E-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.906e-09   1.693e-09
25- 50  7.023e-09   1.907e-09
50-150  4.232e-09   1.760e-09
15-150  1.716e-08   5.029e-09
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.07015       -3.07005      7.67885
R1^2/D10^2  : 122.141       -122.141     4514.84
kT2 [keV]   : 11.9425       -1.6841      0.8755
R2^2/D10^2  : 1.06874      -1.06874    1e+24
------------------------------------------------------------
 Chi-Squared =      67.61679     using    59 PHA bins.
 but latest trial   10.7739     gives Chi-Squared =   2.86227
 but latest trial   10.2645     gives Chi-Squared =   2.67350
 but latest trial   13.6458     gives Chi-Squared =   3.55960
 Reduced chi-squared =      1.229396     for     55 degrees of freedom
 Null hypothesis probability = 0.118
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.918e-09   2.231e-09
25- 50  8.820e-09   3.376e-09
50-150  7.242e-09   3.291e-09
15-150  2.098e-08   6.906e-09
Plot creation:
Fri Apr 17 19:56:37 EDT 2009