batgrbproduct Analysis for Trigger=306617

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Tue Mar 18 05:56:47 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger306617/GCN5_download_cron
======================================================================

  Trigger: 00306617      Segment: 000

  BAT Trigger Time: 227490424   [s; MET]
      Trigger Stop: 227490488   [s; MET]
               UTC: 2008-03-17T23:47:01.349320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 244.480037507803   Dec: -15.0722591902521  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    21.98
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    21.98

  Flight Position:   [ source = BAT ]
    RA: 244.480037507803   Dec: -15.0722591902521  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 244.489031719515   Dec: -15.0885837352773  [deg; J2000]  
        { 16h 17m 57.4s , -15d 05' 18.9" }
         +/- 1.05882956399078 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.343968453533202 [arcmin] (formal 1-sigma fit error)
    SNR: 28.0319029916599
    RA  =  16h 17m 57.4s  (244.489032 deg.)
    Dec =  -15d  5' 19" (-15.088584 deg.)
 
  Angular difference between Flight and Ground position is 1.109450 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.920688   0.183091  -0.002965  -0.007127
           0.041553   0.036411   0.031347   0.027175 [error]
 Peak      1.920688   0.183091  -0.002965  -0.007127
           0.041553   0.036411   0.031347   0.027175 [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 5.64e-07 7.55e-08 4.47e-09 2.80e-10 6.44e-07 6.44e-07   erg/cm2
              Error 6.29e-08 1.61e-08 2.37e-09 2.60e-10 6.44e-08 6.44e-08   erg/cm2
Peak flux Power-law 3.11e-01 2.44e-02 7.23e-04 2.20e-05 3.36e-01 3.36e-01   ph/cm2/s
              Error 3.59e-02 4.96e-03 3.73e-04 2.46e-05 3.59e-02 3.59e-02   ph/cm2/s
 
Fluence   Cutoff-PL 5.70e-07 6.27e-08 6.33e-10 2.71e-13 6.34e-07 6.34e-07   erg/cm2
              Error 6.62e-08 2.31e-08 3.18e-09 2.49e-10 4.99e-08 6.64e-08   erg/cm2
Peak flux Cutoff-PL 3.11e-01 2.44e-02 7.21e-04 2.19e-05 3.36e-01 3.36e-01   ph/cm2/s
              Error 3.59e-02 4.96e-03 3.72e-04 2.44e-05 3.58e-02 3.58e-02   ph/cm2/s
 
Fluence        Band 5.55e-07 7.57e-08 4.58e-09 2.98e-10 6.45e-07 4.37e-07   erg/cm2
              Error 5.50e-08 1.06e-08 6.48e-08 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 3.11e-01 2.44e-02 7.21e-04 1.75e-06 3.35e-01 3.36e-01   ph/cm2/s
              Error 3.59e-02 4.96e-03 1.45e-05 3.60e-02 3.58e-02 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    6.040    0.455    -      -           7.82e-05 3.27e-05   46.651 57
CPL   1.760    0.000       1.2    5.1      2.81e-01 2.08e+02   45.689  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    6.040    0.455    -      -           7.82e-05 3.27e-05   46.651 57
CPL   1.760    1.500       1.2    0.0      2.81e-01 2.13e+02   45.689 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  244.4890 -15.0886 0.0069    0.2  137.3       2.0856    28.0  TRIG_00306617       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.03953     ( -0.412779   0.497327 )
Norm@50keV  : 7.823208E-05    ( -2.974524E-05   3.557358E-05) )
------------------------------------------------------------
 Chi-Squared =      46.65144     using    59 PHA bins.
 Reduced chi-squared =     0.8184463     for     57 degrees of freedom
 Null hypothesis probability = 0.834
 
Photon flux (15-150 keV)    in 64.00 sec: 0.336192 ( -0.035851  0.03593 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.43802e-07 ( -6.43494e-08  6.44928e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75965     (     )
Epeak [keV] : 1.15164      ( -0.671586 9.45928 )
Norm@50keV  : 0.280952    ( -0.122459   415.452 )
------------------------------------------------------------
 Chi-Squared =      45.68903     using    59 PHA bins.
 but latest trial  -1.22393     gives Chi-Squared =  0.268742
 Reduced chi-squared =     0.8158755     for     56 degrees of freedom
 Null hypothesis probability = 0.836
 
Photon flux (15-150 keV)    in 64.00 sec: 0.335766 ( -0.035786  0.035862 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.33529e-07 ( -3.35821e-08  6.62918e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.24306   ( -0.756943   1.59148 )
beta        : -6.07663    ( -0.458492   0.448369 )
Epeak [keV] : 247.100      ( -247.000 9752.90 )
Norm@50keV   : 1.028015E-02    ( -3.681829E-03   5.166966E-03) )
------------------------------------------------------------
 Chi-Squared =      46.63324     using    59 PHA bins.
 Reduced chi-squared =     0.8478770     for     55 degrees of freedom
 Null hypothesis probability = 0.782
 
Photon flux (15-150 keV)    in 64.00 sec: 0.334651 ( -0.035366  0.0367 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.44922e-07 ( -6.30182e-08  6.6496e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.03953     ( -0.412779   0.497327 )
Norm@50keV  : 7.823208E-05    ( -2.974524E-05   3.557358E-05) )
------------------------------------------------------------
 Chi-Squared =      46.65144     using    59 PHA bins.
 Reduced chi-squared =     0.8184463     for     57 degrees of freedom
 Null hypothesis probability = 0.834
 
Photon flux (15-150 keV)    in 64.00 sec: 0.336192 ( -0.035851  0.03593 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.43802e-07 ( -6.43494e-08  6.44928e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75965     ( -0.862776   2.13734 )
Epeak [keV] : 1.15164      (   )
Norm@50keV  : 0.280952    ( -9.785711E-02   425.887 )
------------------------------------------------------------
 Chi-Squared =      45.68903     using    59 PHA bins.
 Reduced chi-squared =     0.8158755     for     56 degrees of freedom
 Null hypothesis probability = 0.836
 
Photon flux (15-150 keV)    in 64.00 sec: 0.335766 ( -0.035786  0.035862 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.33529e-07 ( -3.35821e-08  6.62918e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.24306   ( -0.756943   1.70832 )
beta        : -6.07663    ( -0.458492   0.448369 )
Epeak [keV] : 247.100      ( -247.000 9752.90 )
Norm@50keV   : 1.028015E-02    ( -3.681829E-03   5.166966E-03) )
------------------------------------------------------------
 Chi-Squared =      46.63324     using    59 PHA bins.
 Reduced chi-squared =     0.8478770     for     55 degrees of freedom
 Null hypothesis probability = 0.782
 
Photon flux (15-150 keV)    in 64.00 sec: 0.334651 ( -0.035366  0.0367 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.44922e-07 ( -6.30182e-08  6.6496e-08 ) ergs/cm2
 
Plot creation:
Tue Mar 18 06:06:31 EDT 2008