batgrbproduct Analysis for Trigger=223217

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 23:46:15 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger223217/SDC
======================================================================

  Trigger: 00223217      Segment: 000

  BAT Trigger Time: 176654496.768   [s; MET]
      Trigger Stop: 176654500.864   [s; MET]
               UTC: 2006-08-07T14:41:35.402420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 252.527449283141   Dec: 31.5902332978161  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.05
     Image Trigger?:     NO
     Rate S/N Ratio:     20.3715487874634  [ if not an image trigger ]
     Image S/N Ratio:    11.05

  Flight Position:   [ source = BAT ]
    RA: 252.527449283141   Dec: 31.5902332978161  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 252.529417379458   Dec: 31.5927931663048  [deg; J2000]  
        { 16h 50m 07.1s , +31d 35' 34.1" }
         +/- 1.90395440403203 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.757906044837911 [arcmin] (formal 1-sigma fit error)
    SNR: 12.1229700402343
    RA  =  16h 50m  7.1s  (252.529417 deg.)
    Dec =  31d 35' 34" (31.592793 deg.)
 
  Angular difference between Flight and Ground position is 0.183598 arcmin
 
  Partial Coding Fraction: 0.671875    [ including projection effects ]

  Duration
     T90: 43.283999979496 +/- 11.6963052412946
        Measured from: -22.3199999928474
                   to: 20.9639999866486     [s; relative to TRIGTIME]
     T50: 17.4600000083447 +/- 6.40590351808269
        Measured from: -10.9560000002384
                   to: 6.50400000810623     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.140000015497208     
                   to: 0.859999984502792     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -40.7639999985695     
                   to: 25.7599999904633     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.334999   0.586767   0.325501   0.124759
           0.050859   0.051259   0.046025   0.044313 [error]
 Peak      0.021391   0.036099   0.033041   0.009127
           0.006521   0.006702   0.006216   0.005655 [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 1.25e-07 2.18e-07 2.91e-07 7.95e-07 8.48e-07 1.43e-06   erg/cm2
              Error 2.37e-08 2.50e-08 4.60e-08 2.71e-07 1.09e-07 3.08e-07   erg/cm2
Peak flux Power-law 2.25e-01 2.64e-01 2.23e-01 3.20e-01 8.27e-01 1.03e+00   ph/cm2/s
              Error 8.16e-02 5.89e-02 4.95e-02 1.50e-01 1.63e-01 2.06e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.23e-07 2.21e-07 2.93e-07 6.80e-07 8.42e-07 1.19e-06   erg/cm2
              Error 2.64e-08 2.98e-08 4.78e-08 4.47e-07 1.08e-07 4.74e-07   erg/cm2
Peak flux Cutoff-PL 1.66e-01 2.83e-01 2.53e-01 1.21e-01 7.84e-01 8.24e-01   ph/cm2/s
              Error 1.05e-01 7.07e-02 6.53e-02 2.09e-01 2.14e-01 2.71e-01   ph/cm2/s
 
Fluence        Band 1.18e-07 2.26e-07 2.88e-07 7.03e-07 8.33e-07 1.33e-06   erg/cm2
              Error 2.61e-08 2.77e-08 4.35e-08 5.36e-07 8.84e-08 4.71e-07   erg/cm2
Peak flux      Band 1.66e-01 2.83e-01 2.53e-01 1.22e-01 7.84e-01 8.25e-01   ph/cm2/s
              Error 1.05e-01 7.07e-02 6.52e-02 1.84e-01 1.75e-01 2.55e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.584    0.207    -      -           1.36e-03 1.59e-04   53.104 57
CPL   1.233    0.000     103.9    0.0      2.05e-03 5.00e+23   53.409 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.242    0.334    -      -           7.00e-03 1.34e-03   42.054 57
CPL   0.008    1.979      89.1 4969.4      2.58e-02 1.61e-01   40.366  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: 3.840000 sec.
T50 in the 50-300 keV band: 2.368000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   66.524  -40.764   25.760
T90    43.284  -22.320   20.964
T50    17.460  -10.956    6.504
Peak    1.000   -0.140    0.860

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  252.5294 +31.5928 0.0159   29.8  160.2       1.3651    12.1  TRIG_00223217       
------------------------------------------
 
Foreground time interval of the image:
-40.764  25.760 (delta_t =  66.524 [sec])
Background time interval of the image:
-239.768 -40.764 (delta_t = 199.004 [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  -40.764 sec. to   25.760 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.58405     ( -0.205029   0.208073 )
Norm@50keV  : 1.360159E-03    ( -1.602630E-04   1.582867E-04) )
------------------------------------------------------------
 Chi-Squared =      53.10371     using    59 PHA bins.
 Reduced chi-squared =     0.9316441     for     57 degrees of freedom
 Null hypothesis probability = 0.622
 
Photon flux (15-150 keV)    in 66.52 sec: 0.173935 ( -0.019639  0.019682 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.47817e-07 ( -1.07696e-07  1.09346e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -40.764 sec. to   25.760 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23289     (     )
Epeak [keV] : 103.886      (   )
Norm@50keV  : 2.052422E-03    ( -1.716019E-04   1.000000E+24) )
------------------------------------------------------------
 Chi-Squared =      53.40858     using    59 PHA bins.
 Reduced chi-squared =     0.9537247     for     56 degrees of freedom
 Null hypothesis probability = 0.574
 
Photon flux (15-150 keV)    in 66.52 sec: 0.173294 ( -0.019655  0.0194 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.41618e-07 ( -1.00937e-07  1.14873e-07 ) ergs/cm2
 
Band function
Time interval is from  -40.764 sec. to   25.760 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.05412   ( -8.94588   4.23001 )
beta        : -1.69274    ( -8.30726   0.303892 )
Epeak [keV] : 66.8342      ( -66.7342 9933.17 )
Norm@50keV   : 2.829718E-03    ( -2.829718E-03   120.196 )
------------------------------------------------------------
 Chi-Squared =      52.85974     using    59 PHA bins.
 Reduced chi-squared =     0.9610862     for     55 degrees of freedom
 Null hypothesis probability = 0.557
 
Photon flux (15-150 keV)    in 66.52 sec: 0.171958 ( -0.020185  0.020713 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.3323e-07 ( -1.14774e-07  6.19966e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.140 sec. to    0.860 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.24194     ( -0.336290   0.331619 )
Norm@50keV  : 6.999435E-03    ( -1.335479E-03   1.335450E-03) )
------------------------------------------------------------
 Chi-Squared =      42.05426     using    59 PHA bins.
 Reduced chi-squared =     0.7377940     for     57 degrees of freedom
 Null hypothesis probability = 0.931
 
Photon flux (15-150 keV)    in 1.000 sec: 0.826778 ( -0.162726  0.163443 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.01921e-08 ( -1.46507e-08  1.48725e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.140 sec. to    0.860 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 7.660940E-03     ( -2.52406   1.43396 )
Epeak [keV] : 89.1332      ( -27.9251 9910.87 )
Norm@50keV  : 2.575165E-02    ( -1.954801E-02   0.303226 )
------------------------------------------------------------
 Chi-Squared =      40.36618     using    59 PHA bins.
 but latest trial   39.9283     gives Chi-Squared =   16.1169
 Reduced chi-squared =     0.7208246     for     56 degrees of freedom
 Null hypothesis probability = 0.943
 
Photon flux (15-150 keV)    in 1.000 sec: 0.784114 ( -0.169906  0.258136 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.61225e-08 ( -1.60688e-08  1.61513e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.140 sec. to    0.860 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.074297E-03   ( -1.43297   1.82873 )
beta        : -9.28268    ( -0.717322   8.24383 )
Epeak [keV] : 89.0985      ( -31.2795 9910.90 )
Norm@50keV   : 2.575507E-02    ( -1.955226E-02   0.159429 )
------------------------------------------------------------
 Chi-Squared =      40.36624     using    59 PHA bins.
 Reduced chi-squared =     0.7339317     for     55 degrees of freedom
 Null hypothesis probability = 0.930
 
Photon flux (15-150 keV)    in 1.000 sec: 0.784316 ( -0.176734  0.173984 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.62058e-08 ( -1.60934e-08  1.60433e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  2 00:07:54 EST 2008