batgrbproduct Analysis for Trigger=114753

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Sat Jan  5 00:06:12 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger114753/SDC
======================================================================

  Trigger: 00114753      Segment: 000

  BAT Trigger Time: 135342283.968   [s; MET]
      Trigger Stop: 135342284.48   [s; MET]
               UTC: 2005-04-16T11:04:44.488360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 188.478556551299   Dec: 21.0434055593792  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11
     Image Trigger?:     NO
     Rate S/N Ratio:     19.2613602842582  [ if not an image trigger ]
     Image S/N Ratio:    11

  Flight Position:   [ source = BAT ]
    RA: 188.478556551299   Dec: 21.0434055593792  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 188.482249533018   Dec: 21.0599609719841  [deg; J2000]  
        { 12h 33m 55.7s , +21d 03' 35.9" }
         +/- 1.51843924966585 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.623671428618201 [arcmin] (formal 1-sigma fit error)
    SNR: 16.7486268516692
    RA  =  12h 33m 55.7s  (188.482250 deg.)
    Dec =  21d  3' 36" (21.059961 deg.)
 
  Angular difference between Flight and Ground position is 1.014621 arcmin
 
  Partial Coding Fraction: 0.1679688    [ including projection effects ]

  Duration
     T90: 2.48800000548363 +/- 0.444072089685655
        Measured from: 0.0559999942779541
                   to: 2.54399999976158     [s; relative to TRIGTIME]
     T50: 0.903999984264374 +/- 0.545321930461323
        Measured from: 0.464000016450882
                   to: 1.36800000071526     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0559999942779541     
                   to: 0.944000005722046     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0559999942779541     
                   to: 2.96400001645088     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.447358   0.302954   0.044328  -0.011623
           0.026321   0.024438   0.018316   0.015300 [error]
 Peak      0.257710   0.211233   0.025692  -0.001589
           0.017325   0.016446   0.011262   0.008896 [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 1.70e-07 1.22e-07 5.77e-08 3.85e-08 3.68e-07 3.88e-07   erg/cm2
              Error 1.93e-08 1.37e-08 1.35e-08 1.63e-08 3.74e-08 4.37e-08   erg/cm2
Peak flux Power-law 2.97e+00 1.41e+00 4.09e-01 1.49e-01 4.88e+00 4.94e+00   ph/cm2/s
              Error 3.52e-01 1.48e-01 7.77e-02 4.89e-02 4.82e-01 4.86e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.62e-07 1.37e-07 3.34e-08 1.60e-09 3.34e-07 3.33e-07   erg/cm2
              Error 2.11e-08 1.74e-08 1.90e-08 5.94e-09 3.75e-08 3.81e-08   erg/cm2
Peak flux Cutoff-PL 2.77e+00 1.85e+00 1.84e-01 1.06e-03 4.80e+00 4.80e+00   ph/cm2/s
              Error 4.03e-01 2.19e-01 1.06e-01 4.60e-03 4.86e-01 4.86e-01   ph/cm2/s
 
Fluence        Band 1.70e-07 1.20e-07 5.57e-08 3.61e-08 3.65e-07 3.83e-07   erg/cm2
              Error 1.87e-08 1.27e-08 1.29e-08 7.65e-09 3.56e-08 4.07e-08   erg/cm2
Peak flux      Band 3.05e+00 1.45e+00 2.61e-01 4.38e-02 4.88e+00 4.94e+00   ph/cm2/s
              Error 3.29e-01 9.34e-02 3.11e-02 4.88e-01 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    3.078    0.221    -      -           9.76e-03 1.71e-03   58.790 57
CPL   1.233    1.201      13.0   10.3      1.72e-01 1.20e+00   51.223  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.790    0.182    -      -           2.06e-02 3.08e-03   78.872 57
CPL  -0.513    1.710      24.1    4.1      3.48e+00 0.00e+00   55.278 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    3.020   -0.056    2.964
T90     2.488    0.056    2.544
T50     0.904    0.464    1.368
Peak    1.000   -0.056    0.944

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  188.4822 +21.0600 0.0115   36.3   79.1       0.8102    16.7  TRIG_00114753       
------------------------------------------
 
Foreground time interval of the image:
 -0.056   2.964 (delta_t =   3.020 [sec])
Background time interval of the image:
-299.968  -0.056 (delta_t = 299.912 [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   -0.056 sec. to    2.964 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.07762     ( -0.213364   0.229475 )
Norm@50keV  : 9.760588E-03    ( -1.687458E-03   1.724413E-03) )
------------------------------------------------------------
 Chi-Squared =      58.78954     using    59 PHA bins.
 Reduced chi-squared =      1.031395     for     57 degrees of freedom
 Null hypothesis probability = 0.410
 
Photon flux (15-150 keV)    in 3.020 sec: 2.84170 ( -0.26764  0.26792 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67546e-07 ( -3.72849e-08  3.75295e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.056 sec. to    2.964 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23289     ( -1.64987   0.752769 )
Epeak [keV] : 13.0226      ( -12.0913 8.50648 )
Norm@50keV  : 0.171932    ( -0.127570   2.26390 )
------------------------------------------------------------
 Chi-Squared =      51.22294     using    59 PHA bins.
 but latest trial  0.890602     gives Chi-Squared =  0.840691
 but latest trial  4.422683E-02 gives Chi-Squared =   2.84150
 Reduced chi-squared =     0.9146954     for     56 degrees of freedom
 Null hypothesis probability = 0.656
 
Photon flux (15-150 keV)    in 3.020 sec: 2.84047 ( -0.26751  0.26779 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.33819e-07 ( -3.60389e-08  3.89701e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.056 sec. to    2.964 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.55777   ( -0.151320   8.836055E-02) )
beta        : -9.26264    ( -0.737358   19.2625 )
Epeak [keV] : 8.46378      ( -4.96115 8.53463 )
Norm@50keV   : 0.115152    ( -1.609497E-02   440.868 )
------------------------------------------------------------
 Chi-Squared =      51.80974     using    59 PHA bins.
 Reduced chi-squared =     0.9419953     for     55 degrees of freedom
 Null hypothesis probability = 0.597
 
Photon flux (15-150 keV)    in 3.020 sec: 2.70240 ( -0.26223  0.24897 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.64734e-07 ( -3.39206e-08  3.72034e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.056 sec. to    0.944 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.79035     ( -0.176603   0.188003 )
Norm@50keV  : 2.057991E-02    ( -3.072515E-03   3.078219E-03) )
------------------------------------------------------------
 Chi-Squared =      78.87161     using    59 PHA bins.
 Reduced chi-squared =      1.383713     for     57 degrees of freedom
 Null hypothesis probability = 2.914E-02
 
Photon flux (15-150 keV)    in 1.000 sec: 4.88101 ( -0.48192  0.48212 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.26349e-07 ( -2.4171e-08  2.4359e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.056 sec. to    0.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.513222     ( -2.11031   1.30899 )
Epeak [keV] : 24.0536      ( -4.87777 3.30069 )
Norm@50keV  : 3.47505    (     )
------------------------------------------------------------
 Chi-Squared =      55.27775     using    59 PHA bins.
 Reduced chi-squared =     0.9871027     for     56 degrees of freedom
 Null hypothesis probability = 0.502
 
Photon flux (15-150 keV)    in 1.000 sec: 4.80002 ( -0.48637  0.48569 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.01757e-07 ( -2.1138e-08  2.209e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.056 sec. to    0.944 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.44312   ( -0.147636   0.414863 )
beta        : -8.73850    ( -0.628562   19.3714 )
Epeak [keV] : 15.8726      ( -4.99000 2.39996 )
Norm@50keV   : 0.139348    ( -7.06689   3125.12 )
------------------------------------------------------------
 Chi-Squared =      63.41484     using    59 PHA bins.
 Reduced chi-squared =      1.152997     for     55 degrees of freedom
 Null hypothesis probability = 0.204
 
Photon flux (15-150 keV)    in 1.000 sec: 4.87951 ( -0.46042  0.51551 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1463e-07 ( -2.0525e-08  2.5067e-08 ) ergs/cm2
 
Plot creation:
Sat Jan  5 00:22:10 EST 2008