batgrbproduct Analysis for Trigger=153465

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Thu Jan 10 18:55:24 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger153465/SDC
======================================================================

  Trigger: 00153465      Segment: 000

  BAT Trigger Time: 147475928   [s; MET]
      Trigger Stop: 147475992   [s; MET]
               UTC: 2005-09-03T21:32:08.290320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 78.5634399532341   Dec: 16.2103944524969  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.35
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    17.35

  Flight Position:   [ source = BAT ]
    RA: 78.5634399532341   Dec: 16.2103944524969  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 78.5032548699619   Dec: 16.1480806491882  [deg; J2000]  
        { 05h 14m 00.8s , +16d 08' 53.1" }
         +/- 1.37892765966748 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.6953726263786 [arcmin] (formal 1-sigma fit error)
    SNR: 19.2208860531291
    RA  =   5h 14m  0.8s  (78.503255 deg.)
    Dec =  16d  8' 53" (16.148081 deg.)
 
  Angular difference between Flight and Ground position is 5.099653 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 80 +/- 16
        Measured from: -12
                   to: 68     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: 4
                   to: 36     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 27.5     
                   to: 28.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -12     
                   to: 84     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.047998   0.959423   0.454471   0.098526
           0.048664   0.048668   0.042163   0.039058 [error]
 Peak      0.287642   0.261208   0.146990   0.013532
           0.019979   0.019845   0.017183   0.015820 [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 2.96e-07 3.87e-07 3.71e-07 6.32e-07 1.26e-06 1.69e-06   erg/cm2
              Error 3.10e-08 2.42e-08 4.23e-08 1.51e-07 9.16e-08 1.88e-07   erg/cm2
Peak flux Power-law 1.60e-01 1.22e-01 6.21e-02 4.55e-02 3.65e-01 3.90e-01   ph/cm2/s
              Error 2.26e-02 1.05e-02 9.23e-03 1.35e-02 3.21e-02 3.36e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.96e-07 3.88e-07 3.71e-07 6.27e-07 1.26e-06 1.68e-06   erg/cm2
              Error 3.10e-08 2.43e-08 4.23e-08 1.50e-07 9.16e-08 1.87e-07   erg/cm2
Peak flux Cutoff-PL 1.60e-01 1.22e-01 6.21e-02 4.52e-02 3.65e-01 3.89e-01   ph/cm2/s
              Error 2.26e-02 1.05e-02 9.24e-03 1.34e-02 3.21e-02 3.36e-02   ph/cm2/s
 
Fluence        Band 2.87e-07 3.85e-07 3.75e-07 6.47e-07 4.07e-06 1.77e-06   erg/cm2
              Error 1.93e-08 2.43e-08 3.07e-08 8.53e-05 1.86e-07 0.00e+00   erg/cm2
Peak flux      Band 1.60e-01 1.22e-01 6.21e-02 4.52e-02 3.65e-01 3.89e-01   ph/cm2/s
              Error 2.26e-02 1.05e-02 9.24e-03 1.35e-02 3.21e-02 3.36e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.061    0.139    -      -           1.42e-03 1.12e-04   45.563 57
CPL   1.997    0.000       5.0    0.0      1.49e-03 0.00e+00   46.026 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.972    0.183    -      -           2.46e-03 2.66e-04   58.994 57
CPL   1.934    0.000      95.5 5000.0      2.57e-03 0.00e+00   59.122 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: 62.016000 sec.
T50 in the 50-300 keV band: 27.968000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   96.000  -12.000   84.000
T90    80.000  -12.000   68.000
T50    32.000    4.000   36.000
Peak    1.000   27.500   28.500

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   78.5033 +16.1481 0.0100    2.1   58.0       2.7860    19.2  TRIG_00153465       
------------------------------------------
 
Foreground time interval of the image:
-12.000  76.805 (delta_t =  88.805 [sec])
Background time interval of the image:
-60.000 -12.000 (delta_t =  48.000 [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  -12.000 sec. to   84.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.06141     ( -0.136938   0.140856 )
Norm@50keV  : 1.422737E-03    ( -1.130013E-04   1.108452E-04) )
------------------------------------------------------------
 Chi-Squared =      45.56335     using    59 PHA bins.
 Reduced chi-squared =     0.7993569     for     57 degrees of freedom
 Null hypothesis probability = 0.862
 
Photon flux (15-150 keV)    in 96.00 sec: 0.219664 ( -0.014326  0.014411 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26454e-06 ( -9.08736e-08  9.23808e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -12.000 sec. to   84.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99691     (     )
Epeak [keV] : 5.03439      (   )
Norm@50keV  : 1.490520E-03    (     )
------------------------------------------------------------
 Chi-Squared =      46.02599     using    59 PHA bins.
 Reduced chi-squared =     0.8218927     for     56 degrees of freedom
 Null hypothesis probability = 0.827
 
Photon flux (15-150 keV)    in 96.00 sec: 0.219556 ( -0.014319  0.014405 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.26446e-06 ( -9.09888e-08  9.22848e-08 ) ergs/cm2
 
Band function
Time interval is from  -12.000 sec. to   84.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.55316   ( -8.44684   6.55316 )
beta        : -2.06055    ( -0.141639   0.135979 )
Epeak [keV] : 10.9352      ( -10.8352 202.010 )
Norm@50keV   : 4.792414E-03    ( -4.792414E-03   109.426 )
------------------------------------------------------------
 Chi-Squared =      45.56353     using    59 PHA bins.
 Reduced chi-squared =     0.8284277     for     55 degrees of freedom
 Null hypothesis probability = 0.814
 
Photon flux (15-150 keV)    in 96.00 sec: 0.219447 ( -0.013735  0.06535 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.07323e-06 ( -2.28538e-06  0.000168288 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   20.000 sec. to   36.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.97230     ( -0.179597   0.187258 )
Norm@50keV  : 2.464924E-03    ( -2.700405E-04   2.627335E-04) )
------------------------------------------------------------
 Chi-Squared =      58.99400     using    59 PHA bins.
 Reduced chi-squared =      1.034983     for     57 degrees of freedom
 Null hypothesis probability = 0.402
 
Photon flux (15-150 keV)    in 16.00 sec: 0.365109 ( -0.032031  0.032118 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.63221e-07 ( -3.7272e-08  3.79984e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   20.000 sec. to   36.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93405     (     )
Epeak [keV] : 95.4935      ( -15.9969 9983.99 )
Norm@50keV  : 2.571288E-03    (     )
------------------------------------------------------------
 Chi-Squared =      59.12181     using    59 PHA bins.
 Reduced chi-squared =      1.055747     for     56 degrees of freedom
 Null hypothesis probability = 0.362
 
Photon flux (15-150 keV)    in 16.00 sec: 0.364947 ( -0.032017  0.032106 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.63187e-07 ( -3.72832e-08  3.79984e-08 ) ergs/cm2
 
Band function
Time interval is from   20.000 sec. to   36.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.64327   ( -8.134842E-04   14.9992 )
beta        : -1.94927    ( -0.187438   0.179256 )
Epeak [keV] : 10.6147      ( -10.5147 9989.39 )
Norm@50keV   : 5.681823E-03    ( -3.676003E-02   3.570676E-02) )
------------------------------------------------------------
 Chi-Squared =      59.03736     using    59 PHA bins.
 Reduced chi-squared =      1.073407     for     55 degrees of freedom
 Null hypothesis probability = 0.330
 
Photon flux (15-150 keV)    in 16.00 sec: 0.364953 ( -0.032043  0.032086 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.6848e-07 ( 0  0 ) ergs/cm2
 
Plot creation:
Thu Jan 10 19:02:54 EST 2008