batgrbproduct Analysis for Trigger=352294

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun  2 10:07:22 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger352294/SDC
======================================================================

  Trigger: 00352294      Segment: 000

  BAT Trigger Time: 264236540.096   [s; MET]
      Trigger Stop: 264236566.976   [s; MET]
               UTC: 2009-05-17T07:02:15.347820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 109.436580944308   Dec: -50.736229533679  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.83
     Image Trigger?:     NO
     Rate S/N Ratio:     20.2977831301844  [ if not an image trigger ]
     Image S/N Ratio:    5.83

  Flight Position:   [ source = BAT ]
    RA: 109.436580944308   Dec: -50.736229533679  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 109.446132306089   Dec: -50.7459847966475  [deg; J2000]  
        { 07h 17m 47.1s , -50d 44' 45.5" }
         +/- 6.52069529539567 [arcmin] (estimated 90% radius based on SNR)
         +/- 5.19857263300806 [arcmin] (formal 1-sigma fit error)
    SNR: 2.08853313852933
 
  Angular difference between Flight and Ground position is 0.688562 arcmin
 
  Partial Coding Fraction: 0.4492188    [ including projection effects ]

  Duration
     T90: 26.880000025034 +/- 
        Measured from: 0
                   to: 26.880000025034     [s; relative to TRIGTIME]
     T50: 26.880000025034 +/- 
        Measured from: 0
                   to: 26.880000025034     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 26.880000025034 second)
        Measured from: 1.49011611938477e-08     
                   to: 26.8800000399351     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 26.880000025034     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.137251   0.174273  -0.031973  -0.012607
           0.048037   0.046371   0.040002   0.036916 [error]
 Peak      0.137251   0.174273  -0.031973  -0.012607
           0.048037   0.046371   0.040002   0.036916 [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 5.77e-08 4.87e-08 2.80e-08 2.40e-08 1.45e-07 1.58e-07   erg/cm2
              Error 2.58e-08 2.47e-08 3.00e-08 4.92e-08 7.22e-08 9.76e-08   erg/cm2
Peak flux Power-law 7.11e-02 3.37e-02 9.69e-03 3.50e-03 1.16e-01 1.18e-01   ph/cm2/s
              Error 3.25e-02 1.65e-02 1.01e-02 6.57e-03 4.71e-02 4.79e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.84e-08 7.45e-08 7.86e-09 7.67e-12 1.30e-07 1.30e-07   erg/cm2
              Error 4.02e-08 3.85e-08 1.85e-08 6.37e-09 5.24e-08 5.25e-08   erg/cm2
Peak flux Cutoff-PL 5.65e-02 5.23e-02 3.19e-03 1.68e-06 1.12e-01 1.12e-01   ph/cm2/s
              Error 4.85e-02 2.60e-02 6.64e-03 1.08e-03 4.64e-02 4.65e-02   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.797    0.948    -      -           4.89e-04 3.52e-04   57.040 57
CPL  -4.220    0.000      28.8   12.2      2.04e+01 0.00e+00   53.930 56
 
The chi2 of BB fit is  which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.797    0.948    -      -           4.89e-04 3.52e-04   57.040 57
CPL  -4.220    0.000      28.8   13.2      2.04e+01 0.00e+00   53.930 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   26.880    0.000   26.880
T90    26.880    0.000   26.880
T50    26.880    0.000   26.880
Peak   26.880    0.000   26.880

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  109.4461 -50.7460 0.0918   45.5 -174.3       0.2897     2.1  TRIG_00352294       
------------------------------------------
 
Foreground time interval of the image:
  0.000  26.880 (delta_t =  26.880 [sec])
Background time interval of the image:
-60.096 -44.096 (delta_t =  16.000 [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    0.000 sec. to   26.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.79704     ( -0.773835   1.12295 )
Norm@50keV  : 4.88822E-04    ( -0.000330345   0.000373909 )
------------------------------------------------------------
# Chi-Squared =          57.04 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     57 degrees of freedom 
# Null hypothesis probability =   4.735650e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 0.116469 ( -0.0470147  0.0472468 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44859e-07 ( -6.73658e-08  7.70857e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   26.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.21995     (     )
Epeak [keV] : 28.7559      ( -15.8022 8.61983 )
Norm@50keV  : 20.3753    (     )
------------------------------------------------------------
# Chi-Squared =          53.93 using 59 PHA bins.
# Reduced chi-squared =         0.9630 for     56 degrees of freedom 
# Null hypothesis probability =   5.538014e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 0.112040 ( -0.0467598  0.04612 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.30488e-07 ( -5.03091e-08  5.45473e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   26.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.42768   ( -5.6729   -5.83078 )
beta        : -9.36964    ( 10   19.995 )
Epeak [keV] : 28.4870      ( -7.06246 7.17125 )
Norm@50keV   : 6.09183    ( -6.08966   29.1943 )
------------------------------------------------------------
# Chi-Squared =          53.91 using 59 PHA bins.
# Reduced chi-squared =         0.9802 for     55 degrees of freedom 
# Null hypothesis probability =   5.163008e-01
 
Photon flux (15-150 keV)    in 26.88 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   26.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.79704     ( -0.773835   1.12295 )
Norm@50keV  : 4.88822E-04    ( -0.000330345   0.000373909 )
------------------------------------------------------------
# Chi-Squared =          57.04 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     57 degrees of freedom 
# Null hypothesis probability =   4.735650e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 0.116469 ( -0.0470147  0.0472468 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44859e-07 ( -6.73658e-08  7.70857e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   26.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.21995     (     )
Epeak [keV] : 28.7559      ( -17.7374 8.61281 )
Norm@50keV  : 20.3753    (     )
------------------------------------------------------------
# Chi-Squared =          53.93 using 59 PHA bins.
# Reduced chi-squared =         0.9630 for     56 degrees of freedom 
# Null hypothesis probability =   5.538014e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 0.112040 ( -0.0467598  0.04612 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.30488e-07 ( -5.03091e-08  5.45473e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   26.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.42768   ( -15.6878   -5.83078 )
beta        : -9.36964    ( 10   19.995 )
Epeak [keV] : 28.4870      ( -7.06246 7.17125 )
Norm@50keV   : 6.09183    ( -6.08966   29.1943 )
------------------------------------------------------------
# Chi-Squared =          53.91 using 59 PHA bins.
# Reduced chi-squared =         0.9802 for     55 degrees of freedom 
# Null hypothesis probability =   5.163008e-01
 
Photon flux (15-150 keV)    in 26.88 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    :   (  )
R^2/D10^2   :   (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    :        (      )
Norm        :        (     )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   :         (      )
R1^2/D10^2  :         (      )
kT2 [keV]   :         (      )
R2^2/D10^2  :     (   )
------------------------------------------------------------
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25     
25- 50     
50-150     
15-150     
Plot creation:
Thu Jun  2 10:13:15 EDT 2011