batgrbproduct Analysis for Trigger=353211

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Wed May 27 00:00:42 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger353211/GCN5_download_cron
======================================================================

  Trigger: 00353211      Segment: 000

  BAT Trigger Time: 265042760.704   [s; MET]
      Trigger Stop: 265042761.216   [s; MET]
               UTC: 2009-05-26T14:59:15.930020    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 252.718864125473   Dec: 58.8773099649887  [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:     31.8747549010185  [ if not an image trigger ]
     Image S/N Ratio:    5.67

  Flight Position:   [ source = BAT ]
    RA: 252.718864125473   Dec: 58.8773099649887  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 252.687569942909   Dec: 58.9462793888847  [deg; J2000]  
        { 16h 50m 45.0s , +58d 56' 46.6" }
         +/- 4.11181837518578 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.09788474693672 [arcmin] (formal 1-sigma fit error)
    SNR: 4.03577607491753
 
  Angular difference between Flight and Ground position is 4.250225 arcmin
 
  Partial Coding Fraction: 0.2851562    [ including projection effects ]

  Duration
     T90: 0.511999994516373 +/- 
        Measured from: 0
                   to: 0.511999994516373     [s; relative to TRIGTIME]
     T50: 0.511999994516373 +/- 
        Measured from: 0
                   to: 0.511999994516373     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.511999994516373 second)
        Measured from: -1.49011611938477e-08     
                   to: 0.511999979615211     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.511999994516373     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.015741   0.027853   0.020476  -0.005753
           0.008867   0.008732   0.007228   0.005756 [error]
 Peak      0.015741   0.027853   0.020476  -0.005753
           0.008867   0.008732   0.007228   0.005756 [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 6.98e-09 8.34e-09 7.22e-09 1.07e-08 2.63e-08 3.31e-08   erg/cm2
              Error 4.28e-09 3.94e-09 3.74e-09 1.10e-08 1.21e-08 1.63e-08   erg/cm2
Peak flux Power-law 4.45e-01 2.96e-01 1.28e-01 7.61e-02 9.07e-01 9.43e-01   ph/cm2/s
              Error 2.77e-01 1.41e-01 6.52e-02 6.19e-02 4.51e-01 4.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.78e-09 1.57e-08 1.31e-08 9.79e-10 3.36e-08 3.36e-08   erg/cm2
              Error 3.63e-09 6.33e-09 9.65e-09 2.07e-09 1.22e-08 1.23e-08   erg/cm2
Peak flux Cutoff-PL 2.26e-01 5.28e-01 2.48e-01 1.05e-02 1.01e+00 1.01e+00   ph/cm2/s
              Error 1.90e-01 2.19e-01 1.84e-01 2.03e-02 4.06e-01 4.05e-01   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 1.05e+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    2.218    0.569    -      -           5.44e-03 2.54e-03   81.360 57
CPL  -2.460    0.218      48.3   11.0      1.40e+00 9.93e+00   73.210 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.218    0.569    -      -           5.44e-03 2.54e-03   81.360 57
CPL  -2.460    0.218      48.3   11.0      1.40e+00 9.93e+00   73.210 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    0.512    0.000    0.512
T90     0.512    0.000    0.512
T50     0.512    0.000    0.512
Peak    0.512   -0.000    0.512

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  252.6876 +58.9463 0.0477   50.2 -165.7       0.0608     4.0  TRIG_00353211       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.512 (delta_t =   0.512 [sec])
Background time interval of the image:
-60.704  -8.704 (delta_t =  52.000 [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    0.512 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.21762     ( -0.552172   0.58534 )
Norm@50keV  : 5.44436E-03    ( -0.00253952   0.00253115 )
------------------------------------------------------------
# Chi-Squared =          81.36 using 59 PHA bins.
# Reduced chi-squared =          1.427 for     57 degrees of freedom 
# Null hypothesis probability =   1.875650e-02
 
Photon flux (15-150 keV)    in 0.512 sec: 0.907335 ( -0.442747  0.459237 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62905e-08 ( -1.20684e-08  1.20687e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.46045     ( 2.62997   3.06696 )
Epeak [keV] : 48.3453      ( -11.1136 10.954 )
Norm@50keV  : 1.39657    ( -1.71432   18.1448 )
------------------------------------------------------------
# Chi-Squared =          73.21 using 59 PHA bins.
# Reduced chi-squared =          1.307 for     56 degrees of freedom 
# Null hypothesis probability =   6.107938e-02
 
Photon flux (15-150 keV)    in 0.512 sec: 1.01211 ( -0.381686  0.42968 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.35632e-08 ( -1.21284e-08  1.23143e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.512 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.76879   ( -2.90131   -2.48318 )
beta        : -9.37167    ( 10   19.9978 )
Epeak [keV] : 51.8744      ( -14.7025 10.77 )
Norm@50keV   : 4.09675    ( -2.1361   30.2022 )
------------------------------------------------------------
# Chi-Squared =          73.69 using 59 PHA bins.
# Reduced chi-squared =          1.340 for     55 degrees of freedom 
# Null hypothesis probability =   4.701584e-02
 
Photon flux (15-150 keV)    in 0.512 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    0.512 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.21762     ( -0.552172   0.58534 )
Norm@50keV  : 5.44436E-03    ( -0.00253952   0.00253115 )
------------------------------------------------------------
# Chi-Squared =          81.36 using 59 PHA bins.
# Reduced chi-squared =          1.427 for     57 degrees of freedom 
# Null hypothesis probability =   1.875650e-02
 
Photon flux (15-150 keV)    in 0.512 sec: 0.907335 ( -0.442774  0.459237 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62905e-08 ( -1.20684e-08  1.20687e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.46045     ( 2.62997   3.06696 )
Epeak [keV] : 48.3453      ( -11.1136 10.954 )
Norm@50keV  : 1.39657    ( -1.71432   18.1448 )
------------------------------------------------------------
# Chi-Squared =          73.21 using 59 PHA bins.
# Reduced chi-squared =          1.307 for     56 degrees of freedom 
# Null hypothesis probability =   6.107938e-02
 
Photon flux (15-150 keV)    in 0.512 sec: 1.01211 ( -0.381686  0.42968 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.35632e-08 ( -1.21284e-08  1.23143e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.512 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.76879   ( -2.90133   -2.48318 )
beta        : -9.37167    ( 10   19.9978 )
Epeak [keV] : 51.8744      ( -14.7026 10.77 )
Norm@50keV   : 4.09675    ( -2.1361   30.2022 )
------------------------------------------------------------
# Chi-Squared =          73.69 using 59 PHA bins.
# Reduced chi-squared =          1.340 for     55 degrees of freedom 
# Null hypothesis probability =   4.701584e-02
 
Photon flux (15-150 keV)    in 0.512 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Wed May 27 00:08:53 EDT 2009