batgrbproduct Analysis for Trigger=215279

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 18:26:00 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger215279/GCN5_download_cron
======================================================================

  Trigger: 00215279      Segment: 000

  BAT Trigger Time: 172410064.64   [s; MET]
      Trigger Stop: 172410064.768   [s; MET]
               UTC: 2006-06-19T11:41:03.374560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 33.3625578902933   Dec: 30.0767784991684  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     NO
     Rate S/N Ratio:     8.42614977317636  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 33.3625578902933   Dec: 30.0767784991684  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 33.359582763431   Dec: 30.0942960333966  [deg; J2000]  
        { 02h 13m 26.3s , +30d 05' 39.5" }
         +/- 3.13006519544505 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.92301893095861 [arcmin] (formal 1-sigma fit error)
    SNR: 5.95915902438517
    RA  =   2h 13m 26.3s  (33.359583 deg.)
    Dec =  30d  5' 39" (30.094296 deg.)
 
  Angular difference between Flight and Ground position is 1.062341 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 4.77200001478195 +/- 0.863712935556445
        Measured from: -113.815999984741
                   to: -109.043999969959     [s; relative to TRIGTIME]
     T50: 2.28000000119209 +/- 1.46497373576984
        Measured from: -111.987999975681
                   to: -109.707999974489     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -109.831999987364     
                   to: -108.831999987364     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -113.951999992132     
                   to: -108.77199998498     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.060845   0.029708   0.043186   0.059570
           0.016864   0.018722   0.018138   0.020472 [error]
 Peak      0.021691   0.023716   0.003304   0.021706
           0.007452   0.008289   0.008235   0.009129 [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 1.16e-08 2.11e-08 2.95e-08 8.60e-08 8.46e-08 1.51e-07   erg/cm2
              Error 1.07e-08 9.74e-09 2.43e-08 1.73e-07 4.59e-08 1.80e-07   erg/cm2
Peak flux Power-law 1.64e-01 1.59e-01 1.07e-01 1.13e-01 4.76e-01 5.43e-01   ph/cm2/s
              Error 1.19e-01 7.34e-02 6.78e-02 1.86e-01 3.43e-01 2.53e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.18e-08 2.12e-08 2.94e-08 8.48e-08 8.45e-08 1.42e-07   erg/cm2
              Error 1.07e-08 9.75e-09 2.44e-08 1.72e-07 4.60e-08 1.79e-07   erg/cm2
Peak flux Cutoff-PL 1.64e-01 1.59e-01 1.07e-01 1.12e-01 4.76e-01 5.42e-01   ph/cm2/s
              Error 1.19e-01 7.34e-02 6.79e-02 1.84e-01 3.43e-01 2.52e-01   ph/cm2/s
 
Fluence        Band 1.28e-08 2.14e-08 2.79e-08 7.49e-08 8.23e-08 1.17e-07   erg/cm2
              Error 9.57e-09 9.53e-09 1.53e-08 1.79e-07 4.23e-08 0.00e+00   erg/cm2
Peak flux      Band 1.58e-01 1.77e-01 1.00e-01 8.38e-02 4.82e-01 5.15e-01   ph/cm2/s
              Error 8.05e-02 7.61e-02 4.50e-02 1.43e-01 2.07e-01 2.48e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.519    1.136    -      -           1.73e-03 8.71e-04   65.678 57
CPL   1.509    1.143    9999.0 5000.0      1.74e-03 8.78e-04   65.682 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.568    0.963    -      -           3.74e-03 1.86e-03   60.198 57
CPL   1.552    2.534     911.2    0.0      3.84e-03 2.77e-03   60.220  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    5.180 -113.952 -108.772
T90     4.772 -113.816 -109.044
T50     2.280 -111.988 -109.708
Peak    1.000 -109.832 -108.832

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   33.3596 +30.0943 0.0321   38.6 -164.4       0.2228     6.0  TRIG_00215279       
------------------------------------------
 
Foreground time interval of the image:
-113.952 -108.772 (delta_t =   5.180 [sec])
Background time interval of the image:
-177.439 -113.952 (delta_t =  63.487 [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 -113.952 sec. to -108.772 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51886     ( -1.08305   1.18923 )
Norm@50keV  : 1.727168E-03    ( -9.670417E-04   7.748486E-04) )
------------------------------------------------------------
 Chi-Squared =      65.67782     using    59 PHA bins.
 Reduced chi-squared =      1.152242     for     57 degrees of freedom
 Null hypothesis probability = 0.201
 
Photon flux (15-150 keV)    in 5.180 sec: 0.216802 ( -0.091532  0.091791 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.46272e-08 ( -4.49133e-08  4.69805e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from -113.952 sec. to -108.772 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50866     ( -1.08172   1.20379 )
Epeak [keV] : 9999.04      ( -9999.03 0.959961 )
Norm@50keV  : 1.736183E-03    ( -9.795887E-04   7.754462E-04) )
------------------------------------------------------------
 Chi-Squared =      65.68233     using    59 PHA bins.
 Reduced chi-squared =      1.172899     for     56 degrees of freedom
 Null hypothesis probability = 0.176
 
Photon flux (15-150 keV)    in 5.180 sec: 0.216688 ( -0.091505  0.091765 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.45485e-08 ( -4.48783e-08  4.70541e-08 ) ergs/cm2
 
Band function
Time interval is from -113.952 sec. to -108.772 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.13348   ( -8.86652   6.04024 )
beta        : -1.50459    ( -8.49541   1.06827 )
Epeak [keV] : 46.3783      ( -46.2783 9953.62 )
Norm@50keV   : 3.539859E-03    ( -3.539859E-03   64.6533 )
------------------------------------------------------------
 Chi-Squared =      65.67547     using    59 PHA bins.
 Reduced chi-squared =      1.194099     for     55 degrees of freedom
 Null hypothesis probability = 0.154
 
Photon flux (15-150 keV)    in 5.180 sec: 0.218784 ( -0.091724  0.091673 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.23097e-08 ( -4.2219e-08  4.2462e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from -109.832 sec. to -108.832 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56788     ( -0.977243   0.948449 )
Norm@50keV  : 3.738500E-03    ( -1.942953E-03   1.775712E-03) )
------------------------------------------------------------
 Chi-Squared =      60.19785     using    59 PHA bins.
 Reduced chi-squared =      1.056103     for     57 degrees of freedom
 Null hypothesis probability = 0.361
 
Photon flux (15-150 keV)    in 1.000 sec: 0.475761 ( -0.475761  0.209526 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.51412e-08 ( -1.80841e-08  1.97944e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from -109.832 sec. to -108.832 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 1.55249     ( -2.18447   2.88352 )
Epeak [keV] : 911.239      (   )
Norm@50keV  : 3.837154E-03    ( -3.742619E-03   1.790959E-03) )
------------------------------------------------------------
 Chi-Squared =      60.22008     using    59 PHA bins.
 but latest trial -0.630518     gives Chi-Squared =   5.85007
 but latest trial   4.43601     gives Chi-Squared =   9.84457
 Reduced chi-squared =      1.075359     for     56 degrees of freedom
 Null hypothesis probability = 0.326
 
Photon flux (15-150 keV)    in 1.000 sec: 0.475583 ( -0.475583  0.209466 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.50725e-08 ( -1.80361e-08  1.98508e-08 ) ergs/cm2
 
Band function
Time interval is from -109.832 sec. to -108.832 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.712436   ( -9.28756   5.71244 )
beta        : -1.63162    ( -8.36838   0.998541 )
Epeak [keV] : 39.3070      ( -39.2070 9960.69 )
Norm@50keV   : 1.623791E-02    ( -92.1987   258.461 )
------------------------------------------------------------
 Chi-Squared =      60.02780     using    59 PHA bins.
 Reduced chi-squared =      1.091414     for     55 degrees of freedom
 Null hypothesis probability = 0.299
 
Photon flux (15-150 keV)    in 1.000 sec: 0.481515 ( -0.205799  0.20762 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.08911e-08 ( -1.64423e-08  2.28051e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  1 18:40:50 EST 2008