batgrbproduct Analysis for Trigger=358643

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Thu Jul 30 05:03:00 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger358643/GCN5_download_cron
======================================================================

  Trigger: 00358643      Segment: 000

  BAT Trigger Time: 270568676.928   [s; MET]
      Trigger Stop: 270568703.808   [s; MET]
               UTC: 2009-07-29T13:57:51.975780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 272.153178088732   Dec: -42.5833420603318  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.64
     Image Trigger?:     NO
     Rate S/N Ratio:     18.6010752377383  [ if not an image trigger ]
     Image S/N Ratio:    5.64

  Flight Position:   [ source = BAT ]
    RA: 272.153178088732   Dec: -42.5833420603318  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 272.06745668465   Dec: -42.4071259459605  [deg; J2000]  
        { 18h 08m 16.2s , -42d 24' 25.7" }
         +/- 8.86080282097813 [arcmin] (estimated 90% radius based on SNR)
         +/- 7.25253645670744 [arcmin] (formal 1-sigma fit error)
    SNR: 1.34767576783315
 
  Angular difference between Flight and Ground position is 11.232509 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 26.8800000548363 +/- 
        Measured from: 0
                   to: 26.8800000548363     [s; relative to TRIGTIME]
     T50: 26.8800000548363 +/- 
        Measured from: 0
                   to: 26.8800000548363     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 26.8800000548363 second)
        Measured from: 2.98023223876953e-08     
                   to: 26.8800000846386     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 26.8800000548363     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.210411  -0.022390  -0.000945  -0.030428
           0.035816   0.029481   0.025474   0.024534 [error]
 Peak      0.210411  -0.022390  -0.000945  -0.030428
           0.035816   0.029481   0.025474   0.024534 [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 4.57e-08 1.73e-08 3.73e-09 9.54e-10 6.71e-08 6.85e-08   erg/cm2
              Error 1.53e-08 1.17e-08 5.86e-09 3.25e-09 2.84e-08 2.94e-08   erg/cm2
Peak flux Power-law 5.81e-02 1.23e-02 1.35e-03 1.62e-04 7.19e-02 7.15e-02   ph/cm2/s
              Error 1.95e-02 8.10e-03 2.06e-03 4.99e-04 2.53e-02 2.54e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.57e-08 1.71e-08 3.69e-09 9.47e-10 6.71e-08 6.67e-08   erg/cm2
              Error 1.53e-08 1.17e-08 5.85e-09 3.22e-09 2.84e-08 2.93e-08   erg/cm2
Peak flux Cutoff-PL 6.85e-02 1.09e-02 2.61e-05 3.40e-11 7.94e-02 7.94e-02   ph/cm2/s
              Error 2.12e-02 7.85e-03 1.36e-04 6.31e-07 2.46e-02 2.46e-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    4.241    1.134    -      -           9.39e-05 1.20e-04   64.040 57
CPL  -4.986    0.000      16.7    3.0      2.75e+03 1.11e+03   58.310 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.241    1.134    -      -           9.39e-05 1.20e-04   64.040 57
CPL  -4.986    0.000      16.7    3.0      2.75e+03 1.11e+03   58.310 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   26.880    0.000   26.880
T90    26.880    0.000   26.880
T50    26.880    0.000   26.880
Peak   26.880    0.000   26.880

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  272.0675 -42.4071 0.1425   11.1  175.1       0.1285     1.3  TRIG_00358643       
------------------------------------------
 
Foreground time interval of the image:
  0.000  26.880 (delta_t =  26.880 [sec])
Background time interval of the image:
-60.928 -44.928 (delta_t =  16.000 [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   26.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.24086     ( -0.97755   1.29054 )
Norm@50keV  : 9.39389E-05    ( -9.4268e-05   0.000145775 )
------------------------------------------------------------
# Chi-Squared =          64.04 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     57 degrees of freedom 
# Null hypothesis probability =   2.433502e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 7.19114E-02 ( -0.0249119  0.0257551 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.71075e-08 ( -2.63548e-08  3.0358e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   26.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98560     (     )
Epeak [keV] : 16.7122      ( -2.8614 3.05448 )
Norm@50keV  : 2749.64    ( -1312.6   912.36 )
------------------------------------------------------------
# Chi-Squared =          58.31 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     56 degrees of freedom 
# Null hypothesis probability =   3.902921e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 7.94114E-02 ( -0.0246055  0.0245866 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.7104e-08 ( -2.63876e-08  3.03553e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   26.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.90588   ( 1.64499   4.20103 )
beta        : -4.24323    ( -1.30789   0.963124 )
Epeak [keV] : 25.1725      ( -25.1725 -25.1725 )
Norm@50keV   : 1.27096E-02    ( -0.0130918   0.0195221 )
------------------------------------------------------------
# Chi-Squared =          64.04 using 59 PHA bins.
# Reduced chi-squared =          1.164 for     55 degrees of freedom 
# Null hypothesis probability =   1.890811e-01
 
Photon flux (15-150 keV)    in 26.88 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   26.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.24086     ( -0.97755   1.29054 )
Norm@50keV  : 9.39389E-05    ( -9.4268e-05   0.000145775 )
------------------------------------------------------------
# Chi-Squared =          64.04 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     57 degrees of freedom 
# Null hypothesis probability =   2.433502e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 7.19114E-02 ( -0.0249119  0.0257551 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.71075e-08 ( -2.63548e-08  3.0358e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   26.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.98560     (     )
Epeak [keV] : 16.7122      ( -2.8614 3.05448 )
Norm@50keV  : 2749.64    ( -1312.6   912.36 )
------------------------------------------------------------
# Chi-Squared =          58.31 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     56 degrees of freedom 
# Null hypothesis probability =   3.902921e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 7.94114E-02 ( -0.0246055  0.0245866 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.7104e-08 ( -2.63876e-08  3.03553e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   26.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.90588   ( 1.64499   4.20103 )
beta        : -4.24323    ( -1.30789   0.963124 )
Epeak [keV] : 25.1725      ( -25.1725 -25.1725 )
Norm@50keV   : 1.27096E-02    ( -0.0130918   0.0195221 )
------------------------------------------------------------
# Chi-Squared =          64.04 using 59 PHA bins.
# Reduced chi-squared =          1.164 for     55 degrees of freedom 
# Null hypothesis probability =   1.890811e-01
 
Photon flux (15-150 keV)    in 26.88 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Thu Jul 30 05:37:07 EDT 2009