batgrbproduct Analysis for Trigger=352417

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Tue May 19 13:27:07 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger352417/SDC
======================================================================

  Trigger: 00352417      Segment: 000

  BAT Trigger Time: 264303870.144   [s; MET]
      Trigger Stop: 264303897.024   [s; MET]
               UTC: 2009-05-18T01:44:25.393660    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 129.575027997059   Dec: -24.4131240347089  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.69
     Image Trigger?:     NO
     Rate S/N Ratio:     33.9852909359329  [ if not an image trigger ]
     Image S/N Ratio:    5.69

  Flight Position:   [ source = BAT ]
    RA: 129.575027997059   Dec: -24.4131240347089  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 129.643469041047   Dec: -24.3946583364267  [deg; J2000]  
        { 08h 38m 34.4s , -24d 23' 40.8" }
         +/- 3.83780491484311 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.39747185459858 [arcmin] (formal 1-sigma fit error)
    SNR: 4.45363113788252
 
  Angular difference between Flight and Ground position is 3.900249 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 26.8799999952316 +/- 
        Measured from: 0
                   to: 26.8799999952316     [s; relative to TRIGTIME]
     T50: 26.8799999952316 +/- 
        Measured from: 0
                   to: 26.8799999952316     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 26.8799999952316 second)
        Measured from: 0     
                   to: 26.8799999952316     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 26.8799999952316     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.105890   0.063309   0.001047  -0.011332
           0.028974   0.027638   0.022457   0.019808 [error]
 Peak      0.105890   0.063309   0.001047  -0.011332
           0.028974   0.027638   0.022457   0.019808 [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 2.32e-08 2.38e-08 1.71e-08 1.96e-08 7.18e-08 8.56e-08   erg/cm2
              Error 1.13e-08 1.21e-08 1.72e-08 3.58e-08 3.92e-08 6.01e-08   erg/cm2
Peak flux Power-law 2.85e-02 1.62e-02 5.83e-03 2.75e-03 5.20e-02 5.34e-02   ph/cm2/s
              Error 1.41e-02 8.07e-03 5.75e-03 4.63e-03 2.34e-02 2.43e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.37e-08 3.47e-08 4.18e-09 7.25e-12 6.26e-08 6.25e-08   erg/cm2
              Error 1.35e-08 2.67e-08 1.24e-08 4.69e-09 2.98e-08 2.99e-08   erg/cm2
Peak flux Cutoff-PL 2.79e-02 2.43e-02 1.68e-03 1.58e-06 5.39e-02 5.39e-02   ph/cm2/s
              Error 1.64e-02 1.84e-02 4.39e-03 7.96e-04 2.19e-02 2.19e-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    2.446    0.848    -      -           2.74e-04 1.81e-04   54.350 57
CPL  -1.935    0.000      28.0    0.0      2.78e-01 0.00e+00   50.840 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    2.446    0.848    -      -           2.74e-04 1.81e-04   54.350 57
CPL  -1.935    0.000      28.0    0.0      2.78e-01 0.00e+00   50.840 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
  129.6435 -24.3947 0.0432   15.0 -168.4       0.3625     4.5  TRIG_00352417       
------------------------------------------
 
Foreground time interval of the image:
  0.000  26.880 (delta_t =  26.880 [sec])
Background time interval of the image:
-60.144 -46.144 (delta_t =  14.000 [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: 2.44593     ( -0.743169   0.952391 )
Norm@50keV  : 2.74327E-04    ( -0.000175759   0.000187161 )
------------------------------------------------------------
# Chi-Squared =          54.35 using 59 PHA bins.
# Reduced chi-squared =         0.9535 for     57 degrees of freedom 
# Null hypothesis probability =   5.751359e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 5.20448E-02 ( -0.0233035  0.0234245 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.1765e-08 ( -3.58472e-08  4.25271e-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: -1.93534     (     )
Epeak [keV] : 27.9935      (   )
Norm@50keV  : 0.277896    (     )
------------------------------------------------------------
# Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.9079 for     56 degrees of freedom 
# Null hypothesis probability =   6.698659e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 5.38685E-02 ( -0.0217114  0.0220888 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.25968e-08 ( -2.75418e-08  3.19985e-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       : 2.88887   ( -3.85054   -1.824 )
beta        : -9.99969    ( 10113   10123 )
Epeak [keV] : 27.9501      ( -23.3622 11.2838 )
Norm@50keV   : 1.33483    ( -1.37012   22.014 )
------------------------------------------------------------
# Chi-Squared =          50.79 using 59 PHA bins.
# Reduced chi-squared =         0.9234 for     55 degrees of freedom 
# Null hypothesis probability =   6.362752e-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: 2.44593     ( -0.743169   0.952391 )
Norm@50keV  : 2.74327E-04    ( -0.000175759   0.000187161 )
------------------------------------------------------------
# Chi-Squared =          54.35 using 59 PHA bins.
# Reduced chi-squared =         0.9535 for     57 degrees of freedom 
# Null hypothesis probability =   5.751359e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 5.20448E-02 ( -0.0233035  0.0234245 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.1765e-08 ( -3.58477e-08  4.25271e-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: -1.93534     (     )
Epeak [keV] : 27.9935      (   )
Norm@50keV  : 0.277896    (     )
------------------------------------------------------------
# Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.9079 for     56 degrees of freedom 
# Null hypothesis probability =   6.698659e-01
 
Photon flux (15-150 keV)    in 26.88 sec: 5.38685E-02 ( -0.0217114  0.0220888 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.25968e-08 ( -2.75418e-08  3.19985e-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       : 2.88887   ( -3.85054   -1.824 )
beta        : -9.99969    ( 10113   10123 )
Epeak [keV] : 27.9501      ( -22.9879 11.9725 )
Norm@50keV   : 1.33483    ( -1.37012   22.014 )
------------------------------------------------------------
# Chi-Squared =          50.79 using 59 PHA bins.
# Reduced chi-squared =         0.9234 for     55 degrees of freedom 
# Null hypothesis probability =   6.362752e-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:
Wed Jun  1 17:45:02 EDT 2011