batgrbproduct Analysis for Trigger=361218

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Aug 30 12:06:21 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger361218/GCN5_download_cron
======================================================================

  Trigger: 00361218      Segment: 000

  BAT Trigger Time: 273265925.376   [s; MET]
      Trigger Stop: 273265933.568   [s; MET]
               UTC: 2009-08-29T19:12:00.335820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 301.246453215108   Dec: 45.9715152415344  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.67
     Image Trigger?:     NO
     Rate S/N Ratio:     8.77496438739212  [ if not an image trigger ]
     Image S/N Ratio:    5.67

  Flight Position:   [ source = BAT ]
    RA: 301.246453215108   Dec: 45.9715152415344  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 301.214591630277   Dec: 45.9856035915697  [deg; J2000]  
        { 20h 04m 51.5s , +45d 59' 08.2" }
         +/- 3.14067347762765 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.65996729516796 [arcmin] (formal 1-sigma fit error)
    SNR: 5.93042512577589
 
  Angular difference between Flight and Ground position is 1.574617 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 8.19200003147125 +/- 
        Measured from: 0
                   to: 8.19200003147125     [s; relative to TRIGTIME]
     T50: 8.19200003147125 +/- 
        Measured from: 0
                   to: 8.19200003147125     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 8.19200003147125 second)
        Measured from: 0     
                   to: 8.19200003147125     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 8.19200003147125     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.037273   0.043961   0.035524   0.012794
           0.016238   0.016353   0.014136   0.012109 [error]
 Peak      0.037273   0.043961   0.035524   0.012794
           0.016238   0.016353   0.014136   0.012109 [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 8.99e-09 1.82e-08 2.86e-08 9.96e-08 7.96e-08 1.55e-07   erg/cm2
              Error 5.87e-09 7.22e-09 1.37e-08 1.35e-07 3.36e-08 1.30e-07   erg/cm2
Peak flux Power-law 3.53e-02 3.89e-02 3.06e-02 3.98e-02 1.20e-01 1.45e-01   ph/cm2/s
              Error 2.35e-02 1.59e-02 1.42e-02 4.35e-02 4.39e-02 5.60e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.99e-09 1.82e-08 2.86e-08 9.87e-08 7.96e-08 1.55e-07   erg/cm2
              Error 5.88e-09 7.23e-09 1.37e-08 1.34e-07 3.36e-08 1.29e-07   erg/cm2
Peak flux Cutoff-PL 3.52e-02 3.89e-02 3.06e-02 3.95e-02 1.20e-01 1.44e-01   ph/cm2/s
              Error 2.35e-02 1.59e-02 1.42e-02 4.32e-02 4.38e-02 5.58e-02   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 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    1.345    0.735    -      -           9.93e-04 3.69e-04   75.090 57
CPL   2.032    0.000      12.3    0.0      4.11e-04 0.00e+00   75.030 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.345    0.735    -      -           9.93e-04 3.69e-04   75.090 57
CPL   2.032    0.000      12.3    0.0      4.11e-04 0.00e+00   75.030 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    8.192    0.000    8.192
T90     8.192    0.000    8.192
T50     8.192    0.000    8.192
Peak    8.192    0.000    8.192

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  301.2146 +45.9856 0.0324   10.9  -45.4       0.1945     5.9  TRIG_00361218       
------------------------------------------
 
Foreground time interval of the image:
  0.000   8.192 (delta_t =   8.192 [sec])
Background time interval of the image:
-60.376 -29.376 (delta_t =  31.000 [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    0.000 sec. to    8.192 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34532     ( -0.760704   0.710061 )
Norm@50keV  : 9.93435E-04    ( -0.000374422   0.000363401 )
------------------------------------------------------------
# Chi-Squared =          75.09 using 59 PHA bins.
# Reduced chi-squared =          1.317 for     57 degrees of freedom 
# Null hypothesis probability =   5.439626e-02
 
Photon flux (15-150 keV)    in 8.192 sec: 0.119563 ( -0.0438098  0.0438954 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.95722e-08 ( -3.2787e-08  3.43499e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.03215     (     )
Epeak [keV] : 12.2722      (   )
Norm@50keV  : 4.11383E-04    (     )
------------------------------------------------------------
# Chi-Squared =          75.03 using 59 PHA bins.
# Reduced chi-squared =          1.340 for     56 degrees of freedom 
# Null hypothesis probability =   4.563581e-02
 
Photon flux (15-150 keV)    in 8.192 sec: 0.119520 ( -0.0437981  0.043882 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.9556e-08 ( -3.27904e-08  3.43652e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    8.192 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.00133   ( 0.959108   0.959108 )
beta        : -1.44832    ( 1.38129   0.786984 )
Epeak [keV] : 24.2706      ( -73.4457 -73.4457 )
Norm@50keV   : 20.2543    ( -28.0631   32.9673 )
------------------------------------------------------------
# Chi-Squared =          74.81 using 59 PHA bins.
# Reduced chi-squared =          1.360 for     55 degrees of freedom 
# Null hypothesis probability =   3.904940e-02
 
Photon flux (15-150 keV)    in 8.192 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    8.192 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34532     ( -0.760704   0.710061 )
Norm@50keV  : 9.93435E-04    ( -0.000374422   0.000363401 )
------------------------------------------------------------
# Chi-Squared =          75.09 using 59 PHA bins.
# Reduced chi-squared =          1.317 for     57 degrees of freedom 
# Null hypothesis probability =   5.439626e-02
 
Photon flux (15-150 keV)    in 8.192 sec: 0.119563 ( -0.0438098  0.0438954 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.95722e-08 ( -3.2787e-08  3.43499e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.03215     (     )
Epeak [keV] : 12.2722      (   )
Norm@50keV  : 4.11383E-04    (     )
------------------------------------------------------------
# Chi-Squared =          75.03 using 59 PHA bins.
# Reduced chi-squared =          1.340 for     56 degrees of freedom 
# Null hypothesis probability =   4.563581e-02
 
Photon flux (15-150 keV)    in 8.192 sec: 0.119520 ( -0.0437981  0.043882 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.9556e-08 ( -3.27904e-08  3.43652e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    8.192 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.00133   ( 0.959108   0.959108 )
beta        : -1.44832    ( 1.38129   0.786984 )
Epeak [keV] : 24.2706      ( -73.4457 -73.4457 )
Norm@50keV   : 20.2543    ( -28.0631   32.9673 )
------------------------------------------------------------
# Chi-Squared =          74.81 using 59 PHA bins.
# Reduced chi-squared =          1.360 for     55 degrees of freedom 
# Null hypothesis probability =   3.904940e-02
 
Photon flux (15-150 keV)    in 8.192 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Sun Aug 30 12:23:10 EDT 2009