batgrbproduct Analysis for Trigger=316063

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Sun Jul  6 02:29:44 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger316063/GCN5_download_cron
======================================================================

  Trigger: 00316063      Segment: 000

  BAT Trigger Time: 236985256   [s; MET]
      Trigger Stop: 236985320   [s; MET]
               UTC: 2008-07-05T21:14:13.081460    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 130.245732251692   Dec: -45.0982244424741  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.38
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.38

  Flight Position:   [ source = BAT ]
    RA: 130.245732251692   Dec: -45.0982244424741  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 130.225048436572   Dec: -45.0536272354055  [deg; J2000]  
        { 08h 40m 54.0s , -45d 03' 13.1" }
         +/- 4.40966712812757 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.6429403187616 [arcmin] (formal 1-sigma fit error)
    SNR: 3.65206631914481
 
  Angular difference between Flight and Ground position is 2.815691 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 256 +/- 80
        Measured from: -31
                   to: 225     [s; relative to TRIGTIME]
     T50: 144 +/- 71.5541752799933
        Measured from: 33
                   to: 177     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 88.5     
                   to: 89.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -31     
                   to: 257     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.835488   0.840214   0.119619   0.001047
           0.088834   0.087956   0.077708   0.069869 [error]
 Peak      0.053907   0.069850   0.024677   0.020596
           0.021075   0.020906   0.018094   0.016262 [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 2.93e-07 2.91e-07 2.03e-07 2.23e-07 8.76e-07 1.01e-06   erg/cm2
              Error 4.41e-08 4.44e-08 6.05e-08 1.22e-07 1.46e-07 2.17e-07   erg/cm2
Peak flux Power-law 3.56e-02 2.70e-02 1.36e-02 9.86e-03 8.08e-02 8.61e-02   ph/cm2/s
              Error 1.84e-02 1.07e-02 8.88e-03 1.39e-02 3.16e-02 3.45e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.82e-07 3.56e-07 7.28e-08 9.20e-10 7.12e-07 7.12e-07   erg/cm2
              Error 4.92e-08 6.17e-08 6.77e-08 1.03e-08 1.19e-07 1.19e-07   erg/cm2
Peak flux Cutoff-PL 3.23e-02 3.67e-02 4.81e-03 1.98e-05 7.36e-02 7.36e-02   ph/cm2/s
              Error 1.76e-02 1.51e-02 1.06e-02 1.10e-02 2.98e-02 3.02e-02   ph/cm2/s
 
Fluence        Band 2.88e-07 3.37e-07 1.22e-07 1.40e-08 7.60e-07 7.42e-07   erg/cm2
              Error 4.92e-08 5.02e-08 5.48e-08 6.74e-08 1.30e-07 1.73e-07   erg/cm2
Peak flux      Band 3.27e-02 3.30e-02 1.13e-02 4.19e-03 7.99e-02 8.22e-02   ph/cm2/s
              Error 1.49e-02 1.37e-02 1.09e-02 9.35e-03 3.08e-02 3.46e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.523    0.275    -      -           3.02e-04 6.71e-05   63.835 57
CPL  -0.445    2.108      25.6    4.7      3.16e-02 4.93e-01   54.042  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.985    0.761    -      -           5.42e-04 4.06e-04   47.276 57
CPL  -1.785    0.000      32.6   10.0      1.72e-01 2.01e+00   46.204 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  288.000  -31.000  257.000
T90   256.000  -31.000  225.000
T50   144.000   33.000  177.000
Peak    1.000   88.500   89.500

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  130.2250 -45.0536 0.0523   24.2  -44.4       0.4497     3.7  TRIG_00316063       
------------------------------------------
 
Foreground time interval of the image:
-31.000  70.401 (delta_t = 101.401 [sec])
Background time interval of the image:
-239.000 -199.500 (delta_t =  39.500 [sec])
-198.000 -31.000 (delta_t = 167.000 [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  -31.000 sec. to  257.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.52312     ( -0.260929   0.288916 )
Norm@50keV  : 3.023042E-04    ( -6.668725E-05   6.746943E-05) )
------------------------------------------------------------
 Chi-Squared =      63.83548     using    59 PHA bins.
 Reduced chi-squared =      1.119921     for     57 degrees of freedom
 Null hypothesis probability = 0.249
 
Photon flux (15-150 keV)    in 288.0 sec: 6.023403E-02 ( -0.00774651  0.00775254 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.75981e-07 ( -1.42059e-07  1.49622e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -31.000 sec. to  257.000 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.445013     ( -2.55499   1.66096 )
Epeak [keV] : 25.6197      ( -4.95613 4.38154 )
Norm@50keV  : 3.157037E-02    ( -3.157036E-02   0.954092 )
------------------------------------------------------------
 Chi-Squared =      54.04247     using    59 PHA bins.
 but latest trial   20.6636     gives Chi-Squared =   5.27692
 Reduced chi-squared =     0.9650441     for     56 degrees of freedom
 Null hypothesis probability = 0.549
 
Photon flux (15-150 keV)    in 288.0 sec: 5.715708E-02 ( -0.00753798  0.00758972 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11858e-07 ( -1.09823e-07  1.27282e-07 ) ergs/cm2
 
Band function
Time interval is from  -31.000 sec. to  257.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45175   ( -0.862794   1.04207 )
beta        : -6.33626    ( -3.66374   16.3354 )
Epeak [keV] : 18.0184      ( -6.28071 40.1902 )
Norm@50keV   : 1.482345E-03    ( -0.140238   30.5587 )
------------------------------------------------------------
 Chi-Squared =      57.91624     using    59 PHA bins.
 Reduced chi-squared =      1.053023     for     55 degrees of freedom
 Null hypothesis probability = 0.368
 
Photon flux (15-150 keV)    in 288.0 sec: 5.796069E-02 ( -0.00721914  0.00812469 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.60352e-07 ( -1.02995e-07  1.56102e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   81.000 sec. to   97.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98523     ( -0.688270   0.834185 )
Norm@50keV  : 5.421281E-04    ( -5.421281E-04   2.707564E-04) )
------------------------------------------------------------
 Chi-Squared =      47.27606     using    59 PHA bins.
 Reduced chi-squared =     0.8294045     for     57 degrees of freedom
 Null hypothesis probability = 0.817
 
Photon flux (15-150 keV)    in 16.00 sec: 8.077851E-02 ( -0.0315532  0.0315605 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.9948e-08 ( -3.69645e-08  4.09733e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   81.000 sec. to   97.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.78533     (     )
Epeak [keV] : 32.5523      ( -8.30136 11.6019 )
Norm@50keV  : 0.172385    ( -0.975182   3.04400 )
------------------------------------------------------------
 Chi-Squared =      46.20366     using    59 PHA bins.
 Reduced chi-squared =     0.8250653     for     56 degrees of freedom
 Null hypothesis probability = 0.822
 
Photon flux (15-150 keV)    in 16.00 sec: 7.359449E-02 ( -0.0278408  0.0317225 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.59003e-08 ( -2.23611e-08  5.46861e-08 ) ergs/cm2
 
Band function
Time interval is from   81.000 sec. to   97.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.48807   ( -7.77423   3.22561 )
beta        : -9.34268    ( -6.80098   1.63016 )
Epeak [keV] : 36.3043      ( -32.5339 66.0806 )
Norm@50keV   : 1.148400E-03    ( -1.43252   16.1959 )
------------------------------------------------------------
 Chi-Squared =      46.98996     using    59 PHA bins.
 Reduced chi-squared =     0.8543630     for     55 degrees of freedom
 Null hypothesis probability = 0.770
 
Photon flux (15-150 keV)    in 16.00 sec: 7.990231E-02 ( -0.0305131  0.0310747 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.96512e-08 ( -3.23458e-08  3.93128e-08 ) ergs/cm2
 
Plot creation:
Sun Jul  6 03:06:44 EDT 2008