batgrbproduct Analysis for Trigger=213486

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 15:23:57 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger213486/SDC
======================================================================

  Trigger: 00213486      Segment: 000

  BAT Trigger Time: 171137941.248   [s; MET]
      Trigger Stop: 171137945.344   [s; MET]
               UTC: 2006-06-04T18:19:00.012500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 337.242167553083   Dec: -10.9050195742294  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.78
     Image Trigger?:     NO
     Rate S/N Ratio:     12.4899959967968  [ if not an image trigger ]
     Image S/N Ratio:    6.78

  Flight Position:   [ source = BAT ]
    RA: 337.242167553083   Dec: -10.9050195742294  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 337.263258627293   Dec: -10.9855689954724  [deg; J2000]  
        { 22h 29m 03.2s , -10d 59' 08.0" }
         +/- 3.1760014549802 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.85877243371789 [arcmin] (formal 1-sigma fit error)
    SNR: 5.83641227016462
    RA  =  22h 29m  3.2s  (337.263259 deg.)
    Dec = -10d 59'  8" (-10.985569 deg.)
 
  Angular difference between Flight and Ground position is 4.990112 arcmin
 
  Partial Coding Fraction: 0.7265625    [ including projection effects ]

  Duration
     T90: 80 +/- 17
        Measured from: -54.2479999959469
                   to: 25.7520000040531     [s; relative to TRIGTIME]
     T50: 45 +/- 15.2643375224737
        Measured from: -40.2479999959469
                   to: 4.75200000405312     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -32.2479999959469     
                   to: -31.2479999959469     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -56.2479999959469     
                   to: 32.7520000040531     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.296541   0.246584   0.166989   0.044216
           0.049820   0.049416   0.043589   0.038588 [error]
 Peak      0.012682   0.014323   0.010764   0.004347
           0.005397   0.005528   0.004696   0.004059 [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 9.12e-08 1.15e-07 1.06e-07 1.71e-07 3.70e-07 4.85e-07   erg/cm2
              Error 2.43e-08 2.38e-08 4.18e-08 1.34e-07 9.45e-08 1.83e-07   erg/cm2
Peak flux Power-law 1.31e-01 1.14e-01 6.79e-02 6.08e-02 3.40e-01 3.74e-01   ph/cm2/s
              Error 8.07e-02 4.49e-02 5.42e-02 8.36e-02 1.32e-01 1.49e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.06e-08 1.17e-07 1.06e-07 1.43e-07 3.67e-07 4.22e-07   erg/cm2
              Error 2.57e-08 2.87e-08 4.40e-08 1.27e-07 9.97e-08 2.09e-07   erg/cm2
Peak flux Cutoff-PL 1.31e-01 1.14e-01 6.80e-02 6.04e-02 3.39e-01 3.74e-01   ph/cm2/s
              Error 8.07e-02 4.49e-02 5.42e-02 8.31e-02 1.32e-01 1.48e-01   ph/cm2/s
 
Fluence        Band 8.98e-08 1.16e-07 1.05e-07 1.43e-07 3.67e-07 4.52e-07   erg/cm2
              Error 2.55e-08 2.86e-08 4.41e-08 1.68e-07 9.97e-08 2.08e-07   erg/cm2
Peak flux      Band 1.31e-01 1.14e-01 6.80e-02 6.04e-02 3.39e-01 3.74e-01   ph/cm2/s
              Error 8.17e-02 4.48e-02 4.10e-02 8.31e-02 1.33e-01 1.48e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.120    0.420    -      -           4.47e-04 1.28e-04   51.771 57
CPL   1.533    0.000      34.0    0.0      9.44e-04 2.10e-04   52.115 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.749    0.840    -      -           2.51e-03 1.18e-03   53.214 57
CPL   1.650    0.000     177.4    0.0      2.83e-03 2.35e-02   53.245  0
 
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   89.000  -56.248   32.752
T90    80.000  -54.248   25.752
T50    45.000  -40.248    4.752
Peak    1.000  -32.248  -31.248

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  337.2633 -10.9856 0.0329   25.1  148.7       1.0888     5.8  TRIG_00213486       
------------------------------------------
 
Foreground time interval of the image:
-56.248  32.752 (delta_t =  89.000 [sec])
Background time interval of the image:
-87.043 -56.248 (delta_t =  30.795 [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  -56.248 sec. to   32.752 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.12014     ( -0.388860   0.450236 )
Norm@50keV  : 4.470232E-04    ( -1.313802E-04   1.241222E-04) )
------------------------------------------------------------
 Chi-Squared =      51.77056     using    59 PHA bins.
 Reduced chi-squared =     0.9082555     for     57 degrees of freedom
 Null hypothesis probability = 0.671
 
Photon flux (15-150 keV)    in 89.00 sec: 7.103538E-02 ( -0.0139438  0.0139439 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.7043e-07 ( -9.2034e-08  9.68845e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -56.248 sec. to   32.752 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53329     (     )
Epeak [keV] : 34.0251      (   )
Norm@50keV  : 9.439582E-04    ( -2.235996E-04   1.958295E-04) )
------------------------------------------------------------
 Chi-Squared =      52.11532     using    59 PHA bins.
 Reduced chi-squared =     0.9306307     for     56 degrees of freedom
 Null hypothesis probability = 0.623
 
Photon flux (15-150 keV)    in 89.00 sec: 7.084310E-02 ( -0.0139163  0.0140795 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67355e-07 ( -9.96293e-08  9.97361e-08 ) ergs/cm2
 
Band function
Time interval is from  -56.248 sec. to   32.752 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.61667   ( -5.80884   6.91070 )
beta        : -9.08144    ( -0.450018   0.389347 )
Epeak [keV] : 32.8321      ( -32.7321 9967.17 )
Norm@50keV   : 8.615614E-04    ( -1.785610E-02   1.687282E-02) )
------------------------------------------------------------
 Chi-Squared =      51.99043     using    59 PHA bins.
 Reduced chi-squared =     0.9452804     for     55 degrees of freedom
 Null hypothesis probability = 0.590
 
Photon flux (15-150 keV)    in 89.00 sec: 7.083448E-02 ( -0.0140156  0.0140693 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.66832e-07 ( -9.98268e-08  9.95403e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  -32.248 sec. to  -31.248 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.74875     ( -0.755381   0.924067 )
Norm@50keV  : 2.512674E-03    ( -1.254527E-03   1.099183E-03) )
------------------------------------------------------------
 Chi-Squared =      53.21420     using    59 PHA bins.
 Reduced chi-squared =     0.9335824     for     57 degrees of freedom
 Null hypothesis probability = 0.618
 
Photon flux (15-150 keV)    in 1.000 sec: 0.339606 ( -0.132314  0.132616 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31784e-08 ( -1.07092e-08  1.12632e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -32.248 sec. to  -31.248 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64971     (     )
Epeak [keV] : 177.401      (   )
Norm@50keV  : 2.825880E-03    ( -1.363054E-03   4.568193E-02) )
------------------------------------------------------------
 Chi-Squared =      53.24465     using    59 PHA bins.
 but latest trial  4.702971E-02 gives Chi-Squared =   1.85320
 Reduced chi-squared =     0.9507974     for     56 degrees of freedom
 Null hypothesis probability = 0.580
 
Photon flux (15-150 keV)    in 1.000 sec: 0.339491 ( -0.13228  0.132579 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31701e-08 ( -1.07005e-08  1.12792e-08 ) ergs/cm2
 
Band function
Time interval is from  -32.248 sec. to  -31.248 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.75038   ( -2.47996   0.763021 )
beta        : -9.30459    ( -0.695410   8.22271 )
Epeak [keV] : 9999.30      ( -9999.20 0.700195 )
Norm@50keV   : 2.513523E-03    ( -1.086769E-03   1.108165E-03) )
------------------------------------------------------------
 Chi-Squared =      53.21457     using    59 PHA bins.
 Reduced chi-squared =     0.9675375     for     55 degrees of freedom
 Null hypothesis probability = 0.543
 
Photon flux (15-150 keV)    in 1.000 sec: 0.339492 ( -0.132486  0.132579 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31617e-08 ( -1.07396e-08  1.12562e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  1 15:49:01 EST 2008