batgrbproduct Analysis for Trigger=219101

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Jan  1 20:31:00 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger219101/SDC
======================================================================

  Trigger: 00219101      Segment: 000

  BAT Trigger Time: 174582721.6   [s; MET]
      Trigger Stop: 174582725.696   [s; MET]
               UTC: 2006-07-14T15:12:00.283480    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 227.871787334663   Dec: -6.54624612869117  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.78
     Image Trigger?:     NO
     Rate S/N Ratio:     14.8660687473185  [ if not an image trigger ]
     Image S/N Ratio:    8.78

  Flight Position:   [ source = BAT ]
    RA: 227.871787334663   Dec: -6.54624612869117  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 227.858611630779   Dec: -6.54517527486174  [deg; J2000]  
        { 15h 11m 26.1s , -06d 32' 42.6" }
         +/- 1.57457553386248 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.529020858819836 [arcmin] (formal 1-sigma fit error)
    SNR: 15.9021643855174
    RA  =  15h 11m 26.1s  (227.858612 deg.)
    Dec =  -6d 32' 43" (-6.545175 deg.)
 
  Angular difference between Flight and Ground position is 0.788013 arcmin
 
  Partial Coding Fraction: 0.2734375    [ including projection effects ]

  Duration
     T90: 114.988000005484 +/- 9.12936538358046
        Measured from: -7.92800000309944
                   to: 107.060000002384     [s; relative to TRIGTIME]
     T50: 85.7800000011921 +/- 3.58308526550072
        Measured from: 4.80799999833107
                   to: 90.5879999995232     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 75.4399999976158     
                   to: 76.4399999976158     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -11.727999985218     
                   to: 120.636000007391     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.863998   2.014264   1.057119   0.287648
           0.084404   0.084025   0.074036   0.064004 [error]
 Peak      0.041468   0.066500   0.045726   0.005519
           0.005595   0.005449   0.004736   0.003601 [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 6.42e-07 8.83e-07 8.96e-07 1.66e-06 2.95e-06 4.07e-06   erg/cm2
              Error 5.71e-08 4.70e-08 7.55e-08 2.94e-07 1.71e-07 3.58e-07   erg/cm2
Peak flux Power-law 5.00e-01 4.73e-01 3.10e-01 3.16e-01 1.41e+00 1.60e+00   ph/cm2/s
              Error 8.35e-02 4.95e-02 3.85e-02 7.86e-02 1.44e-01 1.56e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.28e-07 8.97e-07 8.97e-07 1.29e-06 2.91e-06 3.68e-06   erg/cm2
              Error 6.63e-08 5.81e-08 7.61e-08 6.30e-07 2.01e-07 6.80e-07   erg/cm2
Peak flux Cutoff-PL 4.17e-01 5.11e-01 3.38e-01 1.39e-01 1.36e+00 1.41e+00   ph/cm2/s
              Error 1.02e-01 6.02e-02 4.69e-02 9.41e-02 1.49e-01 1.77e-01   ph/cm2/s
 
Fluence        Band 6.07e-07 9.07e-07 8.76e-07 1.50e-06 2.90e-06 3.87e-06   erg/cm2
              Error 7.22e-08 6.38e-08 8.16e-08 5.28e-07 1.89e-07 5.54e-07   erg/cm2
Peak flux      Band 4.17e-01 5.11e-01 3.38e-01 1.39e-01 1.36e+00 1.41e+00   ph/cm2/s
              Error 1.02e-01 6.02e-02 4.69e-02 9.34e-02 1.49e-01 1.77e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.978    0.106    -      -           2.42e-03 1.46e-04   63.727 57
CPL   1.774    0.000      51.0 4994.1      3.11e-03 1.52e-03   63.391  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.607    0.166    -      -           1.10e-02 1.10e-03   53.186 57
CPL   0.673    0.790      73.0   43.3      3.18e-02 3.41e-02   48.091 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: 108.864000 sec.
T50 in the 50-300 keV band: 81.536000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  132.364  -11.728  120.636
T90   114.988   -7.928  107.060
T50    85.780    4.808   90.588
Peak    1.000   75.440   76.440

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  227.8586  -6.5452 0.0120   33.6   65.0       2.2968    15.9  TRIG_00219101       
------------------------------------------
 
Foreground time interval of the image:
-11.728  38.605 (delta_t =  50.333 [sec])
Background time interval of the image:
-239.600 -11.728 (delta_t = 227.872 [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  -11.728 sec. to  120.636 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.97823     ( -0.105207   0.107068 )
Norm@50keV  : 2.419719E-03    ( -1.462980E-04   1.447750E-04) )
------------------------------------------------------------
 Chi-Squared =      63.72665     using    59 PHA bins.
 Reduced chi-squared =      1.118011     for     57 degrees of freedom
 Null hypothesis probability = 0.252
 
Photon flux (15-150 keV)    in 132.4 sec: 0.359373 ( -0.020108  0.020172 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.95155e-06 ( -1.71008e-07  1.71723e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -11.728 sec. to  120.636 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.77359     (     )
Epeak [keV] : 50.9913      ( -39.7676 9948.40 )
Norm@50keV  : 3.105669E-03    ( -1.082378E-03   1.949867E-03) )
------------------------------------------------------------
 Chi-Squared =      63.39078     using    59 PHA bins.
 but latest trial   11.8333     gives Chi-Squared =  0.491673
 Reduced chi-squared =      1.131978     for     56 degrees of freedom
 Null hypothesis probability = 0.232
 
Photon flux (15-150 keV)    in 132.4 sec: 0.356168 ( -0.021863  0.021784 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.91134e-06 ( -2.05683e-07  1.96627e-07 ) ergs/cm2
 
Band function
Time interval is from  -11.728 sec. to  120.636 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.31346   ( -8.68654   2.89941 )
beta        : -2.07108    ( -7.92892   0.159970 )
Epeak [keV] : 34.4031      ( -34.3031 9965.60 )
Norm@50keV   : 6.430210E-03    ( -5.282884E-02   334.462 )
------------------------------------------------------------
 Chi-Squared =      62.12225     using    59 PHA bins.
 Reduced chi-squared =      1.129496     for     55 degrees of freedom
 Null hypothesis probability = 0.237
 
Photon flux (15-150 keV)    in 132.4 sec: 0.352516 ( -0.022457  0.022165 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.8951e-06 ( -1.93913e-07  1.8483e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   75.440 sec. to   76.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60677     ( -0.164457   0.167474 )
Norm@50keV  : 1.097285E-02    ( -1.104191E-03   1.098984E-03) )
------------------------------------------------------------
 Chi-Squared =      53.18605     using    59 PHA bins.
 Reduced chi-squared =     0.9330885     for     57 degrees of freedom
 Null hypothesis probability = 0.619
 
Photon flux (15-150 keV)    in 1.000 sec: 1.41304 ( -0.14342  0.1438 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02591e-07 ( -1.09523e-08  1.0909e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   75.440 sec. to   76.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.672771     ( -0.858902   0.721212 )
Epeak [keV] : 72.9583      ( -15.2535 71.2795 )
Norm@50keV  : 3.178870E-02    ( -1.753632E-02   5.074710E-02) )
------------------------------------------------------------
 Chi-Squared =      48.09057     using    59 PHA bins.
 Reduced chi-squared =     0.8587602     for     56 degrees of freedom
 Null hypothesis probability = 0.765
 
Photon flux (15-150 keV)    in 1.000 sec: 1.36061 ( -0.14887  0.14922 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.80081e-08 ( -1.16361e-08  1.16819e-08 ) ergs/cm2
 
Band function
Time interval is from   75.440 sec. to   76.440 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.675488   ( -0.718486   0.861959 )
beta        : -8.87829    ( -1.12171   7.14547 )
Epeak [keV] : 73.0445      ( -14.4725 71.2094 )
Norm@50keV   : 3.167962E-02    ( -1.825109E-02   5.085866E-02) )
------------------------------------------------------------
 Chi-Squared =      48.09069     using    59 PHA bins.
 Reduced chi-squared =     0.8743761     for     55 degrees of freedom
 Null hypothesis probability = 0.734
 
Photon flux (15-150 keV)    in 1.000 sec: 1.36087 ( -0.14937  0.14925 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.79412e-08 ( -1.16376e-08  1.16678e-08 ) ergs/cm2
 
Plot creation:
Tue Jan  1 20:51:35 EST 2008