batgrbproduct Analysis for Trigger=207399

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Dec 31 20:43:13 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger207399/SDC
======================================================================

  Trigger: 00207399      Segment: 000

  BAT Trigger Time: 167907280   [s; MET]
      Trigger Stop: 167907408   [s; MET]
               UTC: 2006-04-28T08:54:38.839960    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 235.350233277521   Dec: 62.0100932089346  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    14.21
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    14.21

  Flight Position:   [ source = BAT ]
    RA: 235.350233277521   Dec: 62.0100932089346  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 235.346168144943   Dec: 62.0225030817784  [deg; J2000]  
        { 15h 41m 23.1s , +62d 01' 21.0" }
         +/- 2.89482593094067 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.76058343767704 [arcmin] (formal 1-sigma fit error)
    SNR: 6.66281463592007
    RA  =  15h 41m 23.1s  (235.346168 deg.)
    Dec =  62d  1' 21" (62.022503 deg.)
 
  Angular difference between Flight and Ground position is 0.753336 arcmin
 
  Partial Coding Fraction: 0.7421875    [ including projection effects ]

  Duration
     T90: 96 +/- 50.5964425626941
        Measured from: -15
                   to: 81     [s; relative to TRIGTIME]
     T50: 16 +/- 22.6274169979695
        Measured from: 1
                   to: 17     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.5     
                   to: 9.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15     
                   to: 113     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.957330   0.759246   0.077829   0.046403
           0.063941   0.065330   0.057626   0.050898 [error]
 Peak      0.274126   0.220231   0.042305   0.029942
           0.023097   0.023580   0.020536   0.017932 [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 3.41e-07 2.86e-07 1.63e-07 1.38e-07 8.50e-07 9.28e-07   erg/cm2
              Error 4.23e-08 3.60e-08 4.34e-08 6.74e-08 1.05e-07 1.39e-07   erg/cm2
Peak flux Power-law 1.86e-01 9.92e-02 3.29e-02 1.41e-02 3.26e-01 3.32e-01   ph/cm2/s
              Error 2.77e-02 1.37e-02 9.20e-03 7.07e-03 3.93e-02 4.04e-02   ph/cm2/s
 
Fluence   Cutoff-PL 3.26e-07 3.20e-07 6.68e-08 1.50e-09 7.15e-07 7.15e-07   erg/cm2
              Error 4.73e-08 4.68e-08 5.97e-08 1.81e-08 1.04e-07 1.06e-07   erg/cm2
Peak flux Cutoff-PL 1.81e-01 1.12e-01 1.84e-02 5.48e-04 3.13e-01 3.12e-01   ph/cm2/s
              Error 2.97e-02 1.87e-02 1.82e-02 6.31e-03 4.08e-02 4.09e-02   ph/cm2/s
 
Fluence        Band 3.26e-07 3.12e-07 1.09e-07 3.87e-08 7.74e-07 7.88e-07   erg/cm2
              Error 5.18e-08 4.29e-08 4.47e-08 4.79e-08 9.89e-08 1.54e-07   erg/cm2
Peak flux      Band 1.85e-01 1.11e-01 2.27e-02 5.40e-03 3.17e-01 3.25e-01   ph/cm2/s
              Error 1.78e-02 8.54e-03 2.43e-03 3.97e-02 4.11e-02 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.811    0.250    -      -           5.99e-04 1.18e-04   68.832 57
CPL   0.354    2.108      20.1   12.8      2.96e-02 9.26e-01   63.338  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.590    0.271    -      -           1.57e-03 3.34e-04   68.863 57
CPL   0.796    2.278      20.4   12.9      2.71e-02 3.54e+00   65.822  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  128.000  -15.000  113.000
T90    96.000  -15.000   81.000
T50    16.000    1.000   17.000
Peak    1.000    8.500    9.500

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  235.3462 +62.0225 0.0288   31.1    2.6       1.5594     6.7  TRIG_00207399       
------------------------------------------
 
Foreground time interval of the image:
-15.000 113.000 (delta_t = 128.000 [sec])
Background time interval of the image:
-64.995 -15.000 (delta_t =  49.995 [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  -15.000 sec. to  113.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.81094     ( -0.239491   0.261207 )
Norm@50keV  : 5.993866E-04    ( -1.163640E-04   1.190712E-04) )
------------------------------------------------------------
 Chi-Squared =      68.83181     using    59 PHA bins.
 Reduced chi-squared =      1.207576     for     57 degrees of freedom
 Null hypothesis probability = 0.135
 
Photon flux (15-150 keV)    in 128.0 sec: 0.144193 ( -0.014614  0.014615 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.50405e-07 ( -1.03341e-07  1.07366e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.000 sec. to  113.000 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.353695     ( -2.56516   1.64996 )
Epeak [keV] : 20.0969      ( -20.0869 5.46832 )
Norm@50keV  : 2.956188E-02    ( -2.956188E-02   1.82320 )
------------------------------------------------------------
 Chi-Squared =      63.33821     using    59 PHA bins.
 but latest trial   2.00365     gives Chi-Squared =   40.1849
 Reduced chi-squared =      1.131039     for     56 degrees of freedom
 Null hypothesis probability = 0.233
 
Photon flux (15-150 keV)    in 128.0 sec: 0.144135 ( -0.014608  0.014608 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.14935e-07 ( -9.15456e-08  1.17043e-07 ) ergs/cm2
 
Band function
Time interval is from  -15.000 sec. to  113.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.43279   ( -0.618000   0.448321 )
beta        : -9.24511    ( -0.754890   19.2450 )
Epeak [keV] : 13.5717      ( -6.63431 3.85601 )
Norm@50keV   : 4.853882E-03    ( -5.305452E-02   2.70113 )
------------------------------------------------------------
 Chi-Squared =      64.53846     using    59 PHA bins.
 Reduced chi-squared =      1.173427     for     55 degrees of freedom
 Null hypothesis probability = 0.178
 
Photon flux (15-150 keV)    in 128.0 sec: 0.137372 ( -0.015414  0.014128 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.74109e-07 ( -8.79386e-08  1.09892e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    1.000 sec. to   17.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.59048     ( -0.258199   0.284419 )
Norm@50keV  : 1.568520E-03    ( -3.331541E-04   3.356743E-04) )
------------------------------------------------------------
 Chi-Squared =      68.86315     using    59 PHA bins.
 Reduced chi-squared =      1.208125     for     57 degrees of freedom
 Null hypothesis probability = 0.135
 
Photon flux (15-150 keV)    in 16.00 sec: 0.326037 ( -0.039285  0.039292 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.57595e-07 ( -3.85888e-08  4.01888e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.000 sec. to   17.000 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 0.796247     ( -3.33781   1.21783 )
Epeak [keV] : 20.4168      ( -19.0815 6.64041 )
Norm@50keV  : 2.707880E-02    ( -2.707880E-02   7.05897 )
------------------------------------------------------------
 Chi-Squared =      65.82246     using    59 PHA bins.
 but latest trial   2.01464     gives Chi-Squared =   17.4902
 but latest trial   1.43207     gives Chi-Squared =   1.02787
 Reduced chi-squared =      1.175401     for     56 degrees of freedom
 Null hypothesis probability = 0.173
 
Photon flux (15-150 keV)    in 16.00 sec: 0.312526 ( -0.040517  0.041051 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.16866e-07 ( -3.8328e-08  5.30112e-08 ) ergs/cm2
 
Band function
Time interval is from    1.000 sec. to   17.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45320   ( -2.99691   1.50585 )
beta        : -9.33206    ( -6.93302   0.528296 )
Epeak [keV] : 15.4192      ( -6.09864 5.29202 )
Norm@50keV   : 9.141393E-03    ( -2.50219   406.042 )
------------------------------------------------------------
 Chi-Squared =      66.15118     using    59 PHA bins.
 Reduced chi-squared =      1.202749     for     55 degrees of freedom
 Null hypothesis probability = 0.144
 
Photon flux (15-150 keV)    in 16.00 sec: 0.317168 ( -0.03952  0.039974 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33069e-07 ( -3.96336e-08  3.32368e-08 ) ergs/cm2
 
Plot creation:
Mon Dec 31 21:01:00 EST 2007