batgrbproduct Analysis for Trigger=209352

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 11:49:51 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger209352/SDC
======================================================================

  Trigger: 00209352      Segment: 000

  BAT Trigger Time: 168942136   [s; MET]
      Trigger Stop: 168942200   [s; MET]
               UTC: 2006-05-10T08:22:14.815740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 239.141458616034   Dec: 78.5593987782931  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.54
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.54

  Flight Position:   [ source = BAT ]
    RA: 239.141458616034   Dec: 78.5593987782931  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 239.25557390084   Dec: 78.5835095016627  [deg; J2000]  
        { 15h 57m 01.3s , +78d 35' 00.6" }
         +/- 1.88793031832228 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.802029874326253 [arcmin] (formal 1-sigma fit error)
    SNR: 12.270230512556
    RA  =  15h 57m  1.3s  (239.255574 deg.)
    Dec =  78d 35'  1" (78.583510 deg.)
 
  Angular difference between Flight and Ground position is 1.983274 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 270.736000031233 +/- 21.2895454410942
        Measured from: 30.9639999866486
                   to: 301.700000017881     [s; relative to TRIGTIME]
     T50: 132.532000005245 +/- 16.7751321852205
        Measured from: 111.67199999094
                   to: 244.203999996185     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 136.236000001431     
                   to: 137.236000001431     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -16.2800000011921     
                   to: 325.011999994516     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.645259   2.779920   1.718553   0.267180
           0.084297   0.085814   0.075906   0.067435 [error]
 Peak      0.025029   0.023450   0.020035   0.007803
           0.004874   0.004889   0.004413   0.003695 [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 7.28e-07 1.14e-06 1.35e-06 3.08e-06 4.11e-06 6.29e-06   erg/cm2
              Error 5.55e-08 4.82e-08 7.82e-08 4.04e-07 1.78e-07 4.52e-07   erg/cm2
Peak flux Power-law 1.77e-01 1.87e-01 1.41e-01 1.72e-01 5.71e-01 6.77e-01   ph/cm2/s
              Error 6.09e-02 3.93e-02 3.62e-02 9.37e-02 1.12e-01 1.39e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.07e-07 1.15e-06 1.36e-06 2.51e-06 4.07e-06 5.63e-06   erg/cm2
              Error 7.00e-08 5.37e-08 8.04e-08 9.20e-07 2.07e-07 9.60e-07   erg/cm2
Peak flux Cutoff-PL 1.77e-01 1.88e-01 1.41e-01 1.70e-01 5.70e-01 6.76e-01   ph/cm2/s
              Error 6.09e-02 3.93e-02 3.62e-02 9.31e-02 1.12e-01 1.39e-01   ph/cm2/s
 
Fluence        Band 7.02e-07 1.15e-06 1.35e-06 2.51e-06 4.06e-06 5.69e-06   erg/cm2
              Error 6.92e-08 5.44e-08 8.15e-08 9.28e-07 2.10e-07 9.33e-07   erg/cm2
Peak flux      Band 1.73e-01 1.93e-01 1.40e-01 1.63e-01 5.71e-01 6.74e-01   ph/cm2/s
              Error 5.84e-02 4.30e-02 2.94e-02 9.72e-02 1.11e-01 1.43e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.761    0.083    -      -           1.31e-03 5.44e-05   35.580 57
CPL   1.494    0.289      96.1    0.0      1.76e-03 4.93e-04   35.517  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.413    0.361    -      -           4.67e-03 9.42e-04   61.788 57
CPL   1.381    1.419     944.0    0.0      4.86e-03 9.49e-04   61.815 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: 264.896000 sec.
T50 in the 50-300 keV band: 111.424000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  341.292  -16.280  325.012
T90   270.736   30.964  301.700
T50   132.532  111.672  244.204
Peak    1.000  136.236  137.236

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  239.2556 +78.5835 0.0157   12.0 -112.3       1.2434    12.3  TRIG_00209352       
------------------------------------------
 
Foreground time interval of the image:
-16.280  76.805 (delta_t =  93.085 [sec])
Background time interval of the image:
-195.595 -16.280 (delta_t = 179.315 [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  -16.280 sec. to  325.012 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76104     ( -8.256328E-02   8.332276E-02) )
Norm@50keV  : 1.306815E-03    ( -5.452847E-05   5.422754E-05) )
------------------------------------------------------------
 Chi-Squared =      35.57998     using    59 PHA bins.
 Reduced chi-squared =     0.6242101     for     57 degrees of freedom
 Null hypothesis probability = 0.988
 
Photon flux (15-150 keV)    in 341.3 sec: 0.177428 ( -0.007682  0.007721 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.11314e-06 ( -1.77271e-07  1.77988e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -16.280 sec. to  325.012 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49411     ( -0.229659   0.348551 )
Epeak [keV] : 96.0609      (   )
Norm@50keV  : 1.763671E-03    ( -2.733014E-04   7.121888E-04) )
------------------------------------------------------------
 Chi-Squared =      35.51658     using    59 PHA bins.
 but latest trial   59.8155     gives Chi-Squared =   8.61542
 but latest trial  1.180364E-03 gives Chi-Squared =   15.2349
 Reduced chi-squared =     0.6342247     for     56 degrees of freedom
 Null hypothesis probability = 0.985
 
Photon flux (15-150 keV)    in 341.3 sec: 0.175491 ( -0.008786  0.008721 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.06696e-06 ( -2.12835e-07  2.00889e-07 ) ergs/cm2
 
Band function
Time interval is from  -16.280 sec. to  325.012 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45924   ( -0.370591   11.3395 )
beta        : -1.76088    ( -8.343351E-02   8.250117E-02) )
Epeak [keV] : 33.1012      ( -33.0012 9966.90 )
Norm@50keV   : 2.386912E-03    ( -7.412076E-03   7.378191E-03) )
------------------------------------------------------------
 Chi-Squared =      35.59359     using    59 PHA bins.
 Reduced chi-squared =     0.6471561     for     55 degrees of freedom
 Null hypothesis probability = 0.980
 
Photon flux (15-150 keV)    in 341.3 sec: 0.175485 ( -0.008819  0.008825 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.06092e-06 ( -2.11299e-07  2.08295e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  136.236 sec. to  137.236 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41262     ( -0.360560   0.362134 )
Norm@50keV  : 4.672289E-03    ( -9.500959E-04   9.334725E-04) )
------------------------------------------------------------
 Chi-Squared =      61.78831     using    59 PHA bins.
 Reduced chi-squared =      1.084005     for     57 degrees of freedom
 Null hypothesis probability = 0.309
 
Photon flux (15-150 keV)    in 1.000 sec: 0.570651 ( -0.112135  0.112276 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.50105e-08 ( -1.01776e-08  1.04696e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  136.236 sec. to  137.236 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38072     ( -1.32613   1.51195 )
Epeak [keV] : 943.959      (   )
Norm@50keV  : 4.862226E-03    ( -9.588664E-04   9.382362E-04) )
------------------------------------------------------------
 Chi-Squared =      61.81528     using    59 PHA bins.
 Reduced chi-squared =      1.103844     for     56 degrees of freedom
 Null hypothesis probability = 0.276
 
Photon flux (15-150 keV)    in 1.000 sec: 0.570486 ( -0.112102  0.112246 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.50465e-08 ( -1.02045e-08  1.04456e-08 ) ergs/cm2
 
Band function
Time interval is from  136.236 sec. to  137.236 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.964579   ( -9.03542   5.96458 )
beta        : -1.43151    ( -8.56849   0.374855 )
Epeak [keV] : 59.7616      ( -59.6616 9931.07 )
Norm@50keV   : 9.997467E-03    ( -41.2365   428.915 )
------------------------------------------------------------
 Chi-Squared =      61.72558     using    59 PHA bins.
 Reduced chi-squared =      1.122283     for     55 degrees of freedom
 Null hypothesis probability = 0.248
 
Photon flux (15-150 keV)    in 1.000 sec: 0.570536 ( -0.110925  0.111798 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.48931e-08 ( -1.08241e-08  1.00152e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  1 12:02:44 EST 2008