batgrbproduct Analysis for Trigger=411248

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Fri Feb  5 11:44:37 EST 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger411248/GCN5_download_cron
======================================================================

  Trigger: 00411248      Segment: 000

  BAT Trigger Time: 287036328.576   [s; MET]
      Trigger Stop: 287036340.736   [s; MET]
               UTC: 2010-02-05T04:18:43.074340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 141.405845835995   Dec: 31.7394932106859  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.08
     Image Trigger?:     NO
     Rate S/N Ratio:     13.3790881602597  [ if not an image trigger ]
     Image S/N Ratio:    8.08

  Flight Position:   [ source = BAT ]
    RA: 141.405845835995   Dec: 31.7394932106859  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 141.38539186261   Dec: 31.7399261918652  [deg; J2000]  
        { 09h 25m 32.5s , +31d 44' 23.7" }
         +/- 2.13656084321838 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.702822252561615 [arcmin] (formal 1-sigma fit error)
    SNR: 10.2824492128479
 
  Angular difference between Flight and Ground position is 1.044024 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 25.9999999403954 +/- 7.54246246845914
        Measured from: -9.72399985790253
                   to: 16.2760000824928     [s; relative to TRIGTIME]
     T50: 13.663999915123 +/- 4.43940764628902
        Measured from: -0.219999849796295
                   to: 13.4440000653267     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.11599999666214     
                   to: 9.11599999666214     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -12.5759999752045     
                   to: 25.5560000538826     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.239493   0.246725   0.167438   0.073921
           0.030907   0.032325   0.029392   0.027182 [error]
 Peak      0.008388   0.021358   0.012395   0.015451
           0.005143   0.005382   0.004716   0.004395 [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 5.98e-08 1.03e-07 1.36e-07 3.65e-07 3.98e-07 6.64e-07   erg/cm2
              Error 1.27e-08 1.42e-08 2.85e-08 1.59e-07 6.73e-08 1.85e-07   erg/cm2
Peak flux Power-law 1.06e-01 1.19e-01 9.59e-02 1.29e-01 3.68e-01 4.49e-01   ph/cm2/s
              Error 6.18e-02 4.31e-02 3.87e-02 1.16e-01 1.21e-01 1.55e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.86e-08 1.07e-07 1.35e-07 2.23e-07 3.85e-07 5.23e-07   erg/cm2
              Error 1.39e-08 1.86e-08 3.05e-08 2.63e-07 7.92e-08 2.72e-07   erg/cm2
Peak flux Cutoff-PL 1.06e-01 1.19e-01 9.59e-02 1.28e-01 3.68e-01 4.48e-01   ph/cm2/s
              Error 6.18e-02 4.31e-02 3.88e-02 1.15e-01 1.21e-01 1.55e-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 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    1.602    0.248    -      -           1.12e-03 1.72e-04   50.420 57
CPL   1.151    0.849      82.2    0.0      1.98e-03 0.00e+00   50.300 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.312    0.612    -      -           3.08e-03 1.01e-03   59.460 57
CPL   1.309    0.534    9999.4    0.0      3.09e-03 2.70e-02   59.460 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: 17.152000 sec.
T50 in the 50-300 keV band: 9.088000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   38.132  -12.576   25.556
T90    26.000   -9.724   16.276
T50    13.664   -0.220   13.444
Peak    1.000    8.116    9.116

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  141.3854 +31.7399 0.0186   18.3  125.8       0.6744    10.3  TRIG_00411248       
------------------------------------------
 
Foreground time interval of the image:
-12.576  25.556 (delta_t =  38.132 [sec])
Background time interval of the image:
-239.576 -12.576 (delta_t = 227.000 [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  -12.576 sec. to   25.556 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60165     ( -0.244861   0.252113 )
Norm@50keV  : 1.11638E-03    ( -0.000173774   0.000170008 )
------------------------------------------------------------
# Chi-Squared =          50.42 using 59 PHA bins.
# Reduced chi-squared =         0.8846 for     57 degrees of freedom 
# Null hypothesis probability =   7.185815e-01
 
Photon flux (15-150 keV)    in 38.13 sec: 0.143533 ( -0.0197268  0.0197296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.98016e-07 ( -6.63298e-08  6.81928e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -12.576 sec. to   25.556 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15079     ( -1.01435   0.683173 )
Epeak [keV] : 82.2100      (   )
Norm@50keV  : 1.98169E-03    (     )
------------------------------------------------------------
# Chi-Squared =          50.30 using 59 PHA bins.
# Reduced chi-squared =         0.8983 for     56 degrees of freedom 
# Null hypothesis probability =   6.894238e-01
 
Photon flux (15-150 keV)    in 38.13 sec: 0.141938 ( -0.020559  0.020332 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.84716e-07 ( -8.05328e-08  7.7831e-08 ) ergs/cm2
 
Band function
Time interval is from  -12.576 sec. to   25.556 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.80236   ( -11.6289   -11.6289 )
beta        : -1.72747    ( -0.377922   0.288053 )
Epeak [keV] : 24.2448      ( -24.0521 5.87281 )
Norm@50keV   : 114.022    ( -121.744   81.6848 )
------------------------------------------------------------
# Chi-Squared =          48.64 using 59 PHA bins.
# Reduced chi-squared =         0.8844 for     55 degrees of freedom 
# Null hypothesis probability =   7.146222e-01
 
Photon flux (15-150 keV)    in 38.13 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit

Power-law model
Time interval is from    8.116 sec. to    9.116 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31197     ( -0.627078   0.5972 )
Norm@50keV  : 3.07716E-03    ( -0.00101669   0.00100319 )
------------------------------------------------------------
# Chi-Squared =          59.46 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     57 degrees of freedom 
# Null hypothesis probability =   3.860711e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.367935 ( -0.120423  0.120747 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03199e-08 ( -1.10908e-08  1.15211e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.116 sec. to    9.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30877     ( -2.30527   -1.23784 )
Epeak [keV] : 9999.35      (   )
Norm@50keV  : 3.08973E-03    ( -0.00102412   0.0528913 )
------------------------------------------------------------
# Chi-Squared =          59.46 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     56 degrees of freedom 
# Null hypothesis probability =   3.506958e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.367823 ( -0.120391  0.120713 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03195e-08 ( -1.1093e-08  1.1525e-08 ) ergs/cm2
 
Band function
Time interval is from    8.116 sec. to    9.116 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.72349   ( -24.3735   -24.3735 )
beta        : -1.49324    ( -1.2431   0.720583 )
Epeak [keV] : 30.0234      ( -26.5292 147.923 )
Norm@50keV   : 13.7119    ( -13.7702   75.7147 )
------------------------------------------------------------
# Chi-Squared =          59.10 using 59 PHA bins.
# Reduced chi-squared =          1.075 for     55 degrees of freedom 
# Null hypothesis probability =   3.282787e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Fri Feb  5 12:03:45 EST 2010