batgrbproduct Analysis for Trigger=341114

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.42
    Process Start Time (local time): Mon Jan 26 08:30:53 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger341114/GCN5_download_cron
======================================================================

  Trigger: 00341114      Segment: 000

  BAT Trigger Time: 254613137.608   [s; MET]
      Trigger Stop: 254613137.616   [s; MET]
               UTC: 2009-01-25T21:52:13.162160    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 237.728806211538   Dec: -54.3028783954379  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.87
     Image Trigger?:     NO
     Rate S/N Ratio:     160.866404199261  [ if not an image trigger ]
     Image S/N Ratio:    18.87

  Flight Position:   [ source = BAT ]
    RA: 237.728806211538   Dec: -54.3028783954379  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 237.712160736086   Dec: -54.3111094789258  [deg; J2000]  
        { 15h 50m 50.9s , -54d 18' 40.0" }
         +/- 1.21661182209036 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.4474693150046 [arcmin] (formal 1-sigma fit error)
    SNR: 22.9864878466769
 
  Angular difference between Flight and Ground position is 0.763834 arcmin
 
  Partial Coding Fraction: 0.2734375    [ including projection effects ]

  Duration
     T90: 1.08400002121925 +/- 0.19015781709751
        Measured from: -0.979999929666519
                   to: 0.104000091552734     [s; relative to TRIGTIME]
     T50: 0.0520000159740448 +/- 0.0329848540256443
        Measured from: -0.0359999239444733
                   to: 0.0160000920295715     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.828000009059906     
                   to: 0.171999990940094     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.21200001239777     
                   to: 0.171999990940094     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.330009   0.351659   0.165216   0.026620
           0.020350   0.019555   0.016145   0.013338 [error]
 Peak      0.319946   0.326578   0.137079   0.018812
           0.018519   0.017907   0.014222   0.011611 [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 1.38e-07 1.59e-07 1.30e-07 1.80e-07 4.93e-07 6.43e-07   erg/cm2
              Error 1.37e-08 1.08e-08 1.55e-08 4.18e-08 3.66e-08 0.00e+00   erg/cm2
Peak flux Power-law 4.40e+00 2.65e+00 1.02e+00 5.25e-01 8.35e+00 8.60e+00   ph/cm2/s
              Error 4.31e-01 1.79e-01 1.18e-01 1.13e-01 5.85e-01 5.88e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.25e-07 1.74e-07 1.29e-07 5.68e-08 4.66e-07 5.44e-07   erg/cm2
              Error 1.63e-08 1.45e-08 1.78e-08 4.38e-08 3.98e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 3.86e+00 2.93e+00 1.03e+00 1.80e-01 7.96e+00 8.00e+00   ph/cm2/s
              Error 5.21e-01 2.37e-01 1.37e-01 1.15e-01 6.18e-01 6.35e-01   ph/cm2/s
 
Fluence        Band 1.23e-07 1.73e-07 1.29e-07 5.61e-08 4.65e-07 5.46e-07   erg/cm2
              Error 1.61e-08 1.45e-08 1.77e-08 4.32e-08 3.97e-08 0.00e+00   erg/cm2
Peak flux      Band 3.86e+00 2.93e+00 1.03e+00 1.81e-01 7.97e+00 8.00e+00   ph/cm2/s
              Error 5.21e-01 2.37e-01 1.37e-01 1.11e-01 4.64e-01 4.77e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.282    0.132    -      -           3.74e-02 3.23e-03   56.144 57
CPL   1.411    0.608      29.6   15.6      1.14e-01 1.02e-01   48.877 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.378    0.130    -      -           4.57e-02 4.00e-03   56.071 57
CPL   1.343    0.625      27.5   17.6      1.73e-01 1.62e-01   46.156 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: 1.344000 sec.
T50 in the 50-300 keV band: 0.704000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    1.384   -1.212    0.172
T90     1.084   -0.980    0.104
T50     0.052   -0.036    0.016
Peak    1.000   -0.828    0.172

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  237.7122 -54.3111 0.0083   45.8  -34.9       0.9121    23.0  TRIG_00341114       
------------------------------------------
 
Foreground time interval of the image:
 -1.212   0.172 (delta_t =   1.384 [sec])
Background time interval of the image:
-145.907  -1.212 (delta_t = 144.695 [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   -1.212 sec. to    0.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.28234     ( -0.128615   0.134664 )
Norm@50keV  : 3.740406E-02    ( -3.251601E-03   3.199864E-03) )
------------------------------------------------------------
 Chi-Squared =      56.14395     using    59 PHA bins.
 Reduced chi-squared =     0.9849815     for     57 degrees of freedom
 Null hypothesis probability = 0.507
 
Photon flux (15-150 keV)    in 1.384 sec: 6.47309 ( -0.45609  0.45723 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.9309e-07 ( -3.63978e-08  3.67604e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.212 sec. to    0.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41087     ( -0.647642   0.568251 )
Epeak [keV] : 29.5618      ( -22.7487 8.54869 )
Norm@50keV  : 0.113752    ( -5.784303E-02   0.145510 )
------------------------------------------------------------
 Chi-Squared =      48.87746     using    59 PHA bins.
 Reduced chi-squared =     0.8728118     for     56 degrees of freedom
 Null hypothesis probability = 0.739
 
Photon flux (15-150 keV)    in 1.384 sec: 6.20509 ( -0.48407  0.48599 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.66104e-07 ( -3.96336e-08  3.98855e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.212 sec. to    0.172 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45024   ( -0.486333   0.346057 )
beta        : -9.32711    ( -0.672891   6.82501 )
Epeak [keV] : 28.9285      ( -12.5865 9.18887 )
Norm@50keV   : 0.108144    ( -4.905884E-02   0.151690 )
------------------------------------------------------------
 Chi-Squared =      48.89019     using    59 PHA bins.
 Reduced chi-squared =     0.8889126     for     55 degrees of freedom
 Null hypothesis probability = 0.706
 
Photon flux (15-150 keV)    in 1.384 sec: 6.20664 ( -0.48565  0.4842 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.65041e-07 ( -3.92724e-08  4.00765e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.828 sec. to    0.172 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.37759     ( -0.127006   0.133414 )
Norm@50keV  : 4.571378E-02    ( -4.031803E-03   3.968447E-03) )
------------------------------------------------------------
 Chi-Squared =      56.07052     using    59 PHA bins.
 Reduced chi-squared =     0.9836933     for     57 degrees of freedom
 Null hypothesis probability = 0.510
 
Photon flux (15-150 keV)    in 1.000 sec: 8.34859 ( -0.58392  0.58537 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.43701e-07 ( -3.2181e-08  3.2379e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.828 sec. to    0.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34285     ( -0.665111   0.585871 )
Epeak [keV] : 27.4578      ( -27.4478 7.82940 )
Norm@50keV  : 0.173143    ( -9.055568E-02   0.232866 )
------------------------------------------------------------
 Chi-Squared =      46.15644     using    59 PHA bins.
 Reduced chi-squared =     0.8242222     for     56 degrees of freedom
 Null hypothesis probability = 0.823
 
Photon flux (15-150 keV)    in 1.000 sec: 7.96358 ( -0.61754  0.61945 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.18208e-07 ( -3.4398e-08  3.4379e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.828 sec. to    0.172 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.79761   ( -0.210644   5.049908E-02) )
beta        : -9.37113    ( -0.628873   6.80985 )
Epeak [keV] : 13.1705      ( -9.75321 8.92653 )
Norm@50keV   : 0.103963    ( -7.513493E-02   0.245983 )
------------------------------------------------------------
 Chi-Squared =      48.28823     using    59 PHA bins.
 Reduced chi-squared =     0.8779678     for     55 degrees of freedom
 Null hypothesis probability = 0.727
 
Photon flux (15-150 keV)    in 1.000 sec: 7.96525 ( -0.6194  0.30947 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.17422e-07 ( -3.4231e-08  3.4396e-08 ) ergs/cm2
 
Plot creation:
Mon Jan 26 08:55:07 EST 2009