batgrbproduct Analysis for Trigger=375409

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Tue Nov 10 06:01:27 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger375409/GCN5_download_cron
======================================================================

  Trigger: 00375409      Segment: 000

  BAT Trigger Time: 279496148.404   [s; MET]
      Trigger Stop: 279496148.468   [s; MET]
               UTC: 2009-11-09T21:49:03.157720    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 112.716715657691   Dec: -54.0804743571872  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.05
     Image Trigger?:     NO
     Rate S/N Ratio:     27.7848879788996  [ if not an image trigger ]
     Image S/N Ratio:    7.05

  Flight Position:   [ source = BAT ]
    RA: 112.716715657691   Dec: -54.0804743571872  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 112.749128069712   Dec: -54.0917117665262  [deg; J2000]  
        { 07h 30m 59.8s , -54d 05' 30.2" }
         +/- 1.18963487029579 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.513094676585049 [arcmin] (formal 1-sigma fit error)
    SNR: 23.7347435370095
 
  Angular difference between Flight and Ground position is 1.325090 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 0.271999955177307 +/- 0.0468187824917992
        Measured from: 0.0120001435279846
                   to: 0.284000098705292     [s; relative to TRIGTIME]
     T50: 0.0919999480247498 +/- 0.0282842442734789
        Measured from: 0.100000143051147
                   to: 0.192000091075897     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.333999991416931     
                   to: 0.666000008583069     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00400000810623169     
                   to: 0.332000017166138     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.032498   0.076597   0.096733   0.038745
           0.004399   0.005721   0.006229   0.005627 [error]
 Peak      0.032804   0.076278   0.096235   0.039060
           0.004406   0.005740   0.006245   0.005634 [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 9.84e-09 2.94e-08 7.18e-08 4.89e-07 1.94e-07 6.00e-07   erg/cm2
              Error 1.59e-09 2.83e-09 5.55e-09 8.92e-08 1.55e-08 9.15e-08   erg/cm2
Peak flux Power-law 9.17e-01 1.48e+00 1.81e+00 4.33e+00 5.44e+00 8.53e+00   ph/cm2/s
              Error 1.51e-01 1.48e-01 1.37e-01 7.31e-01 4.06e-01 7.74e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.02e-09 3.00e-08 7.47e-08 3.24e-07 1.92e-07 4.38e-07   erg/cm2
              Error 2.02e-09 3.08e-09 7.18e-09 1.93e-07 1.62e-08 1.91e-07   erg/cm2
Peak flux Cutoff-PL 8.45e-01 1.50e+00 1.87e+00 3.27e+00 5.39e+00 7.48e+00   ph/cm2/s
              Error 1.94e-01 1.57e-01 1.41e-01 1.48e+00 4.10e-01 1.56e+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    0.712    0.130    -      -           4.77e-02 3.67e-03   54.420 57
CPL   0.390    0.517     300.4    0.0      6.55e-02 3.46e-02   53.340 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.713    0.131    -      -           4.71e-02 3.63e-03   55.810 57
CPL   0.429    0.464     333.9    0.0      6.22e-02 3.35e-02   54.970 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: 0.256000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.336   -0.004    0.332
T90     0.272    0.012    0.284
T50     0.092    0.100    0.192
Peak    1.000   -0.334    0.666

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  112.7491 -54.0917 0.0081   32.0 -174.9       0.2726    23.7  TRIG_00375409       
------------------------------------------
 
Foreground time interval of the image:
 -0.004   0.332 (delta_t =   0.336 [sec])
Background time interval of the image:
-239.404 -148.264 (delta_t =  91.140 [sec])
-147.404  -0.004 (delta_t = 147.400 [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    0.332 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.712260     ( -0.131787   0.127806 )
Norm@50keV  : 4.76778E-02    ( -0.0036803   0.00365109 )
------------------------------------------------------------
# Chi-Squared =          54.42 using 59 PHA bins.
# Reduced chi-squared =         0.9547 for     57 degrees of freedom 
# Null hypothesis probability =   5.725151e-01
 
Photon flux (15-150 keV)    in 0.336 sec: 5.50597 ( -0.408856  0.40921 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94468e-07 ( -1.54779e-08  1.55303e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.004 sec. to    0.332 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.389519     ( -0.591042   0.443538 )
Epeak [keV] : 300.390      ( -300.443 -300.443 )
Norm@50keV  : 6.54908E-02    ( -0.0202236   0.0490063 )
------------------------------------------------------------
# Chi-Squared =          53.34 using 59 PHA bins.
# Reduced chi-squared =         0.9524 for     56 degrees of freedom 
# Null hypothesis probability =   5.763563e-01
 
Photon flux (15-150 keV)    in 0.336 sec: 5.45686 ( -0.41779  0.20803 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.92376e-07 ( -1.63215e-08  1.61099e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.004 sec. to    0.332 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.938259   ( 0.938271   0.938271 )
beta        : -0.712260    ( -0.127852   0.131736 )
Epeak [keV] : 16.2788      ( -16.2788 -16.2788 )
Norm@50keV   : 6.56832E-02    ( -0.023338   1.35658e+06 )
------------------------------------------------------------
# Chi-Squared =          54.42 using 59 PHA bins.
# Reduced chi-squared =         0.9894 for     55 degrees of freedom 
# Null hypothesis probability =   4.967872e-01
 
Photon flux (15-150 keV)    in 0.336 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]    : 26.0323  (-2.663  3.19019)
R^2/D10^2   : 0.127383  (-0.0363474   0.0478489)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          71.19 using 59 PHA bins.
# Reduced chi-squared =          1.249 for     57 degrees of freedom 
# Null hypothesis probability =   9.791828e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.930e-09   7.073e-10
25- 50  2.854e-08   3.214e-09
50-150  1.424e-07   1.525e-08
15-150  1.759e-07   1.688e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 20.3011       (     )
------------------------------------------------------------
# Chi-Squared =         161.76 using 59 PHA bins.
# Reduced chi-squared =         2.8378 for     57 degrees of freedom 
# Null hypothesis probability =   5.731049e-12
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.699e-08   9.080e-09
25- 50  3.267e-08   1.737e-08
50-150  7.166e-08   3.832e-08
15-150  1.213e-07   6.446e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 16.3756        (-5.4027      3.4603)
R1^2/D10^2  : 0.361350        (-0.172045      0.602164)
kT2 [keV]   : 199.596        (      )
R2^2/D10^2  : 1.03916E-03    (-0.000208669   0.0366132)
------------------------------------------------------------
# Chi-Squared =          52.32 using 59 PHA bins.
# Chi-Squared =          52.23 using 59 PHA bins.
# Reduced chi-squared =         0.9513 for     55 degrees of freedom 
# Reduced chi-squared =         0.9496 for     55 degrees of freedom 
# Null hypothesis probability =   5.776565e-01
# Null hypothesis probability =   5.811714e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.342e-09   2.400e-09
25- 50  3.232e-08   1.319e-08
50-150  1.488e-07   8.012e-08
15-150  1.885e-07   9.425e-08

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.004 sec. to    0.336 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.712744     ( -0.132728   0.128729 )
Norm@50keV  : 4.70814E-02    ( -0.00364902   0.00361968 )
------------------------------------------------------------
# Chi-Squared =          55.81 using 59 PHA bins.
# Reduced chi-squared =         0.9791 for     57 degrees of freedom 
# Null hypothesis probability =   5.198974e-01
 
Photon flux (15-150 keV)    in 0.34 sec: 5.43689 ( -0.405351  0.405703 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94281e-07 ( -1.55401e-08  1.55913e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.004 sec. to    0.336 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.429139     ( -0.588163   0.34028 )
Epeak [keV] : 333.895      ( -333.921 -333.921 )
Norm@50keV  : 6.22143E-02    ( -0.0206611   0.0462468 )
------------------------------------------------------------
# Chi-Squared =          54.97 using 59 PHA bins.
# Reduced chi-squared =         0.9816 for     56 degrees of freedom 
# Null hypothesis probability =   5.138573e-01
 
Photon flux (15-150 keV)    in 0.34 sec: 5.39424 ( -0.41284  0.40786 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.92484e-07 ( -1.63292e-08  1.61235e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.004 sec. to    0.336 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.996822   ( 0.996872   0.996872 )
beta        : -0.712744    ( -0.128772   0.132701 )
Epeak [keV] : 14.7395      ( -14.7392 -14.7392 )
Norm@50keV   : 6.57717E-02    ( -0.0234165   0 )
------------------------------------------------------------
# Chi-Squared =          55.81 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     55 degrees of freedom 
# Null hypothesis probability =   4.442745e-01
 
Photon flux (15-150 keV)    in 0.34 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]    : 26.0988  (-2.70097  3.24435)
R^2/D10^2   : 0.124689  (-0.0359024   0.04742)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          73.60 using 59 PHA bins.
# Reduced chi-squared =          1.291 for     57 degrees of freedom 
# Null hypothesis probability =   6.860402e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.901e-09   8.330e-10
25- 50  2.841e-08   3.351e-09
50-150  1.424e-07   1.596e-08
15-150  1.757e-07   1.600e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (      )
Norm        : 20.0509       (     )
------------------------------------------------------------
# Chi-Squared =         161.68 using 59 PHA bins.
# Reduced chi-squared =         2.8365 for     57 degrees of freedom 
# Null hypothesis probability =   5.876355e-12
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.698e-08   9.008e-09
25- 50  3.266e-08   1.724e-08
50-150  7.162e-08   3.757e-08
15-150  1.213e-07   6.438e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 16.2297        (-5.25292      3.36766)
R1^2/D10^2  : 0.364692        (-0.171831      0.587738)
kT2 [keV]   : 199.618        (      )
R2^2/D10^2  : 1.04486E-03    (-0.000207465   0.0216921)
------------------------------------------------------------
# Chi-Squared =          54.02 using 59 PHA bins.
# Chi-Squared =          53.94 using 59 PHA bins.
# Reduced chi-squared =         0.9822 for     55 degrees of freedom 
# Reduced chi-squared =         0.9808 for     55 degrees of freedom 
# Null hypothesis probability =   5.120145e-01
# Null hypothesis probability =   5.150198e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.374e-09   2.771e-09
25- 50  3.229e-08   1.325e-08
50-150  1.488e-07   8.043e-08
15-150  1.885e-07   9.460e-08
Plot creation:
Tue Nov 10 06:29:33 EST 2009