batgrbproduct Analysis for Trigger=352108

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Tue Aug 11 05:26:58 EDT 2009
             Host Name: gcn14
   Current Working Dir: /net/raid16/BAT_GRB_process_2009/352108
======================================================================

  Trigger: 00352108      Segment: 000

  BAT Trigger Time: 264055514.268   [s; MET]
      Trigger Stop: 264055514.3   [s; MET]
               UTC: 2009-05-15T04:45:09.525600    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 164.170933861596   Dec: 14.4560193879202  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.79
     Image Trigger?:     NO
     Rate S/N Ratio:     38.3927076409049  [ if not an image trigger ]
     Image S/N Ratio:    9.79

  Flight Position:   [ source = BAT ]
    RA: 164.170933861596   Dec: 14.4560193879202  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 164.16441892284   Dec: 14.4658259521476  [deg; J2000]  
        { 10h 56m 39.5s , +14d 27' 57.0" }
         +/- 2.03775448700896 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.05811872142708 [arcmin] (formal 1-sigma fit error)
    SNR: 11.002031103984
 
  Angular difference between Flight and Ground position is 0.699628 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 0.0360000133514404 +/- 0.0164924197847099
        Measured from: 0.00799998641014099
                   to: 0.0439999997615814     [s; relative to TRIGTIME]
     T50: 0.0160000026226044 +/- 0.00799998641014099
        Measured from: 0.0119999945163727
                   to: 0.0279999971389771     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.466000020503998     
                   to: 0.533999979496002     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.00799998641014099     
                   to: 0.0559999942779541     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.009441   0.015846   0.012522   0.003094
           0.001881   0.002204   0.001982   0.001368 [error]
 Peak      0.010136   0.015835   0.011943   0.002878
           0.001949   0.002237   0.002004   0.001380 [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 2.71e-09 5.27e-09 7.93e-09 2.59e-08 2.23e-08 4.18e-08   erg/cm2
              Error 6.86e-10 8.98e-10 1.55e-09 9.95e-09 3.92e-09 1.13e-08   erg/cm2
Peak flux Power-law 6.69e-02 8.97e-02 8.87e-02 1.57e-01 2.97e-01 4.03e-01   ph/cm2/s
              Error 5.62e-02 4.75e-02 4.02e-02 1.87e-01 1.29e-01 1.87e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.16e-09 6.08e-09 9.30e-09 7.70e-09 2.21e-08 2.52e-08   erg/cm2
              Error 8.11e-10 1.16e-09 2.03e-09 4.05e-09 8.89e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 5.64e-02 9.32e-02 9.56e-02 8.42e-02 2.89e-01 3.29e-01   ph/cm2/s
              Error 6.48e-02 7.46e-02 4.92e-02 1.79e-01 1.32e-01 1.93e-01   ph/cm2/s
 
Fluence        Band 2.15e-09 6.04e-09 9.31e-09 7.66e-09 2.21e-08 2.34e-08   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 5.63e-02 9.32e-02 9.56e-02 8.41e-02 2.89e-01 3.31e-01   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    1.409    0.236    -      -           4.82e-02 7.88e-03   44.740 57
CPL   0.151    1.137      79.8   56.6      1.96e-01 3.78e-01   39.990 56
 
The chi2 of BB fit is using 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    1.019    0.783    -      -           2.58e-03 1.10e-03   56.760 57
CPL   0.342    2.339     138.8    0.0      5.19e-03 6.63e-01   56.580 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.048    0.008    0.056
T90     0.036    0.008    0.044
T50     0.016    0.012    0.028
Peak    1.000   -0.466    0.534

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  164.1644 +14.4658 0.0175   21.9   20.5       0.0422    11.0  TRIG_00352108       
------------------------------------------
 
Foreground time interval of the image:
  0.008   0.056 (delta_t =   0.048 [sec])
Background time interval of the image:
-100.167   0.008 (delta_t = 100.175 [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    0.008 sec. to    0.056 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40896     ( -0.23325   0.237796 )
Norm@50keV  : 4.81823E-02    ( -0.00788995   0.00787017 )
------------------------------------------------------------
# Chi-Squared =          44.74 using 59 PHA bins.
# Reduced chi-squared =         0.7850 for     57 degrees of freedom 
# Null hypothesis probability =   8.807371e-01
 
Photon flux (15-150 keV)    in 0.048 sec: 5.87978 ( -0.969476  0.970494 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.23065e-08 ( -3.91503e-09  3.93374e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.008 sec. to    0.056 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.151047     ( -1.27295   1.00202 )
Epeak [keV] : 79.7569      ( -19.3128 93.9545 )
Norm@50keV  : 0.195515    ( -0.195515   0.561146 )
------------------------------------------------------------
# Chi-Squared =          39.99 using 59 PHA bins.
# Reduced chi-squared =         0.7141 for     56 degrees of freedom 
# Null hypothesis probability =   9.476774e-01
 
Photon flux (15-150 keV)    in 0.048 sec: 5.83824 ( -0.97572  0.97602 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.21476e-08 ( -4.04894e-09  4.04741e-09 ) ergs/cm2
 
Band function
Time interval is from    0.008 sec. to    0.056 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.150869   ( -0.698139   1.78816 )
beta        : -10.00000    ( 1.63772e+11   1.63772e+11 )
Epeak [keV] : 79.7402      ( -19.3098 93.9498 )
Norm@50keV   : 0.195568    ( -0.195568   0.561836 )
------------------------------------------------------------
# Chi-Squared =          39.99 using 59 PHA bins.
# Reduced chi-squared =         0.7270 for     55 degrees of freedom 
# Null hypothesis probability =   9.360112e-01
 
Photon flux (15-150 keV)    in 0.048 sec: 5.83799 ( -0.97547  0.97615 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.21172e-08 ( -4.02797e-09  4.05442e-09 ) ergs/cm2
 
Single BB
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     

Peak spectrum fit

Power-law model
Time interval is from   -0.466 sec. to    0.534 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01914     ( -0.832134   0.734602 )
Norm@50keV  : 2.57515E-03    ( -0.00111806   0.00109009 )
------------------------------------------------------------
# Chi-Squared =          56.76 using 59 PHA bins.
# Reduced chi-squared =         0.9957 for     57 degrees of freedom 
# Null hypothesis probability =   4.842179e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.296795 ( -0.127928  0.129668 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.76764e-08 ( -1.22998e-08  1.25964e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.466 sec. to    0.534 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.342223     ( -5.01927   -0.342224 )
Epeak [keV] : 138.808      ( -138.832 -138.832 )
Norm@50keV  : 5.19215E-03    ( -0.00519158   1.32051 )
------------------------------------------------------------
# Chi-Squared =          56.58 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     56 degrees of freedom 
# Null hypothesis probability =   4.532385e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.288854 ( -0.130781  0.133198 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.67308e-08 ( -2.67308e-08  1.31443e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.466 sec. to    0.534 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.377719   ( -7.0415   2.89954 )
beta        : -9.37093    ( 9.99941   9.99941 )
Epeak [keV] : 144.952      ( -92.0099 -144.881 )
Norm@50keV   : 4.97316E-03    ( -0.00290754   0.0100176 )
------------------------------------------------------------
# Chi-Squared =          56.58 using 59 PHA bins.
# Reduced chi-squared =          1.029 for     55 degrees of freedom 
# Null hypothesis probability =   4.158039e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.288835 ( -0.130655  0.133292 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62331e-08 ( -1.13156e-08  1.26449e-08 ) ergs/cm2
 
Single BB
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Plot creation:
Fri May 27 11:23:43 EDT 2011