batgrbproduct Analysis for Trigger=216568

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 19:16:04 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger216568/GCN5_download_cron
======================================================================

  Trigger: 00216568      Segment: 000

  BAT Trigger Time: 173403504   [s; MET]
      Trigger Stop: 173403568   [s; MET]
               UTC: 2006-06-30T23:38:22.711300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 308.036919807042   Dec: 37.6440789320738  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    17.57
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    17.57

  Flight Position:   [ source = BAT ]
    RA: 308.036919807042   Dec: 37.6440789320738  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 308.060786700995   Dec: 37.6671839171752  [deg; J2000]  
        { 20h 32m 14.6s , +37d 40' 01.9" }
         +/- 3.53533931243753 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.92929959217654 [arcmin] (formal 1-sigma fit error)
    SNR: 5.00778155642011
    RA  =  20h 32m 14.6s  (308.060787 deg.)
    Dec =  37d 40'  2" (37.667184 deg.)
 
  Angular difference between Flight and Ground position is 1.790851 arcmin
 
  Partial Coding Fraction: 0.875    [ including projection effects ]

  Duration
     T90: 7 +/- 3.16227766016838
        Measured from: 2
                   to: 9     [s; relative to TRIGTIME]
     T50: 2 +/- 2.82842712474619
        Measured from: 4
                   to: 6     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5     
                   to: 6     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 2     
                   to: 9     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.147284   0.112296   0.032589   0.008331
           0.015160   0.014853   0.012391   0.010513 [error]
 Peak      0.024539   0.012586   0.011977   0.010355
           0.005863   0.005591   0.004704   0.003937 [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 4.79e-08 4.80e-08 3.38e-08 3.78e-08 1.45e-07 1.68e-07   erg/cm2
              Error 7.97e-09 7.52e-09 1.03e-08 2.14e-08 2.48e-08 3.71e-08   erg/cm2
Peak flux Power-law 1.95e-01 1.43e-01 6.97e-02 4.80e-02 4.31e-01 4.56e-01   ph/cm2/s
              Error 1.00e-01 4.73e-02 5.64e-02 6.32e-02 1.42e-01 1.50e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.68e-08 5.45e-08 2.37e-08 3.03e-09 1.28e-07 1.28e-07   erg/cm2
              Error 8.54e-09 1.01e-08 1.49e-08 1.76e-08 2.57e-08 3.25e-08   erg/cm2
Peak flux Cutoff-PL 1.95e-01 1.43e-01 6.96e-02 4.77e-02 4.31e-01 4.56e-01   ph/cm2/s
              Error 1.00e-01 4.73e-02 5.64e-02 6.28e-02 1.42e-01 1.50e-01   ph/cm2/s
 
Fluence        Band 4.64e-08 5.40e-08 2.49e-08 7.95e-09 1.33e-07 1.30e-07   erg/cm2
              Error 6.40e-09 1.04e-08 1.11e-08 1.99e-08 2.46e-08 4.18e-08   erg/cm2
Peak flux      Band 1.95e-01 1.44e-01 7.04e-02 4.88e-02 4.33e-01 4.60e-01   ph/cm2/s
              Error 1.02e-01 4.73e-02 3.23e-02 3.47e-02 1.42e-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    2.506    0.291    -      -           2.06e-03 4.67e-04   64.972 57
CPL   1.102    1.473      21.1   15.1      1.76e-02 2.41e-01   61.998 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.039    0.810    -      -           2.82e-03 1.30e-03   56.692 57
CPL   2.080    0.000      35.5 4979.9      2.40e-03 0.00e+00   56.477 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.000    2.000    9.000
T90     7.000    2.000    9.000
T50     2.000    4.000    6.000
Peak    1.000    5.000    6.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  308.0608 +37.6672 0.0384   28.9  -21.9       0.1680     5.0  TRIG_00216568       
------------------------------------------
 
Foreground time interval of the image:
  2.000   9.000 (delta_t =   7.000 [sec])
Background time interval of the image:
-10.000   2.000 (delta_t =  12.000 [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    2.000 sec. to    9.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.50584     ( -0.275636   0.305594 )
Norm@50keV  : 2.063099E-03    ( -4.670055E-04   4.664166E-04) )
------------------------------------------------------------
 Chi-Squared =      64.97184     using    59 PHA bins.
 Reduced chi-squared =      1.139857     for     57 degrees of freedom
 Null hypothesis probability = 0.219
 
Photon flux (15-150 keV)    in 7.000 sec: 0.406735 ( -0.055745  0.05575 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44637e-07 ( -2.42347e-08  2.52672e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.000 sec. to    9.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10173     ( -2.05205   0.893546 )
Epeak [keV] : 21.1271      ( -21.1171 9.06875 )
Norm@50keV  : 1.760922E-02    ( -1.760922E-02   0.464406 )
------------------------------------------------------------
 Chi-Squared =      61.99809     using    59 PHA bins.
 Reduced chi-squared =      1.107109     for     56 degrees of freedom
 Null hypothesis probability = 0.271
 
Photon flux (15-150 keV)    in 7.000 sec: 0.395996 ( -0.055687  0.056097 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27798e-07 ( -2.31532e-08  2.82296e-08 ) ergs/cm2
 
Band function
Time interval is from    2.000 sec. to    9.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.59594   ( -8.40406   0.522993 )
beta        : -9.11364    ( -5.64746   1.96927 )
Epeak [keV] : 15.8382      ( -15.4995 14.9886 )
Norm@50keV   : 7.950549E-03    ( -26.8398   508.025 )
------------------------------------------------------------
 Chi-Squared =      62.38301     using    59 PHA bins.
 Reduced chi-squared =      1.134237     for     55 degrees of freedom
 Null hypothesis probability = 0.230
 
Photon flux (15-150 keV)    in 7.000 sec: 0.401197 ( -0.059548  0.057277 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.32966e-07 ( -2.55913e-08  2.36957e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    5.000 sec. to    6.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.03944     ( -0.720193   0.899269 )
Norm@50keV  : 2.820976E-03    ( -1.408439E-03   1.198258E-03) )
------------------------------------------------------------
 Chi-Squared =      56.69175     using    59 PHA bins.
 Reduced chi-squared =     0.9945921     for     57 degrees of freedom
 Null hypothesis probability = 0.487
 
Photon flux (15-150 keV)    in 1.000 sec: 0.431067 ( -0.141873  0.141732 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.60666e-08 ( -1.05667e-08  1.11687e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    5.000 sec. to    6.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.07966     (     )
Epeak [keV] : 35.5288      ( -6.89582 9952.88 )
Norm@50keV  : 2.403472E-03    (     )
------------------------------------------------------------
 Chi-Squared =      56.47724     using    59 PHA bins.
 Reduced chi-squared =      1.008522     for     56 degrees of freedom
 Null hypothesis probability = 0.457
 
Photon flux (15-150 keV)    in 1.000 sec: 0.430871 ( -0.141828  0.141689 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.60693e-08 ( -1.05772e-08  1.11626e-08 ) ergs/cm2
 
Band function
Time interval is from    5.000 sec. to    6.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.51614   ( -14.9963   3.669739E-03) )
beta        : -2.02703    ( -1.08356   0.699752 )
Epeak [keV] : 15.8576      ( -15.7576 184.790 )
Norm@50keV   : 8.268115E-03    ( -9901.21   4.210668E+06) )
------------------------------------------------------------
 Chi-Squared =      56.68666     using    59 PHA bins.
 Reduced chi-squared =      1.030667     for     55 degrees of freedom
 Null hypothesis probability = 0.412
 
Photon flux (15-150 keV)    in 1.000 sec: 0.433180 ( -0.14141  0.141769 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.65574e-08 ( -8.968e-09  2.9209e-07 ) ergs/cm2
 
Plot creation:
Tue Jan  1 19:20:26 EST 2008