batgrbproduct Analysis for Trigger=430603

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Aug  2 11:57:13 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger430603/GCN5_download_cron
======================================================================

  Trigger: 00430603      Segment: 000

  BAT Trigger Time: 302420742.208   [s; MET]
      Trigger Stop: 302420743.232   [s; MET]
               UTC: 2010-08-02T05:45:36.166420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 2.45693694544105   Dec: 47.7518131459574  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.45
     Image Trigger?:     NO
     Rate S/N Ratio:     13.6014705087354  [ if not an image trigger ]
     Image S/N Ratio:    7.45

  Flight Position:   [ source = BAT ]
    RA: 2.45693694544105   Dec: 47.7518131459574  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 2.48156671284727   Dec: 47.7513082890094  [deg; J2000]  
        { 00h 09m 55.6s , +47d 45' 04.7" }
         +/- 1.07503278640299 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.305075102492465 [arcmin] (formal 1-sigma fit error)
    SNR: 27.4302789046893
 
  Angular difference between Flight and Ground position is 0.994046 arcmin
 
  Partial Coding Fraction: 0.84375    [ including projection effects ]

  Duration
     T90: 487.339999973774 +/- 26.4194649626413
        Measured from: 0.256000101566315
                   to: 487.59600007534     [s; relative to TRIGTIME]
     T50: 355.351999998093 +/- 32.263805837198
        Measured from: 22.0720000863075
                   to: 377.4240000844     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0759999752044678     
                   to: 0.924000024795532     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.29199999570847     
                   to: 531.684000015259     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.037563   2.485488   1.522583   0.291943
           0.109014   0.111718   0.098033   0.085532 [error]
 Peak      0.014085   0.044043   0.048561   0.009662
           0.005436   0.005906   0.005511   0.004440 [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 6.94e-07 1.03e-06 1.14e-06 2.38e-06 3.59e-06 5.24e-06   erg/cm2
              Error 6.05e-08 5.61e-08 9.59e-08 4.15e-07 2.21e-07 5.02e-07   erg/cm2
Peak flux Power-law 2.06e-01 2.82e-01 2.84e-01 5.20e-01 9.40e-01 1.29e+00   ph/cm2/s
              Error 5.76e-02 4.94e-02 4.10e-02 1.56e-01 1.35e-01 1.90e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.55e-07 1.08e-06 1.14e-06 1.17e-06 3.43e-06 4.04e-06   erg/cm2
              Error 7.05e-08 7.25e-08 1.03e-07 8.09e-07 2.62e-07 8.55e-07   erg/cm2
Peak flux Cutoff-PL 1.46e-01 2.97e-01 3.27e-01 2.03e-01 8.99e-01 9.74e-01   ph/cm2/s
              Error 7.03e-02 5.82e-02 5.51e-02 2.16e-01 0.00e+00 0.00e+00   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 1.01e+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    1.852    0.103    -      -           7.29e-04 4.46e-05   64.600 57
CPL   1.525    0.000      65.1  118.5      1.11e-03 7.64e-04   61.480 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    0.987    0.226    -      -           8.17e-03 1.15e-03   67.480 57
CPL  -0.262    1.211     105.2  114.4      2.87e-02 4.69e-02   63.060 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: 34.752000 sec.
T50 in the 50-300 keV band: 15.232000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  534.976   -3.292  531.684
T90   487.340    0.256  487.596
T50   355.352   22.072  377.424
Peak    1.000   -0.076    0.924

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
    2.4816 +47.7513 0.0070   29.2   -7.3       1.2418    27.4  TRIG_00430603       
------------------------------------------
 
Foreground time interval of the image:
 -3.292  13.393 (delta_t =  16.685 [sec])
Background time interval of the image:
-169.107 -56.665 (delta_t = 112.443 [sec])
-55.208  -3.292 (delta_t =  51.916 [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   -3.292 sec. to  531.684 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85245     ( -0.101604   0.103459 )
Norm@50keV  : 7.29166E-04    ( -4.47623e-05   4.43575e-05 )
------------------------------------------------------------
# Chi-Squared =          64.60 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     57 degrees of freedom 
# Null hypothesis probability =   2.284217e-01
 
Photon flux (15-150 keV)    in 535 sec: 0.102594 ( -0.00571314  0.00572123 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.58683e-06 ( -2.20374e-07  2.22127e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -3.292 sec. to  531.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52482     (     )
Epeak [keV] : 65.0993      ( -17.0859 219.869 )
Norm@50keV  : 1.10713E-03    ( -0.000350447   0.00117807 )
------------------------------------------------------------
# Chi-Squared =          61.48 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     56 degrees of freedom 
# Null hypothesis probability =   2.863898e-01
 
Photon flux (15-150 keV)    in 535 sec: 0.100136 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.43328e-06 ( -2.6124e-07  2.62856e-07 ) ergs/cm2
 
Band function
Time interval is from   -3.292 sec. to  531.684 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -5.93809E-02   ( -1.38552   3.53426 )
beta        : -2.02447    ( 2.02447   0.168077 )
Epeak [keV] : 34.0746      ( -8.72781 46.2367 )
Norm@50keV   : 1.10369E-02    ( -0.0110369   9.27686 )
------------------------------------------------------------
# Chi-Squared =          59.44 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     55 degrees of freedom 
# Null hypothesis probability =   3.170596e-01
 
Photon flux (15-150 keV)    in 535 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   -0.076 sec. to    0.924 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.987423     ( -0.231273   0.221324 )
Norm@50keV  : 8.16797E-03    ( -0.00115261   0.00114477 )
------------------------------------------------------------
# Chi-Squared =          67.48 using 59 PHA bins.
# Reduced chi-squared =          1.184 for     57 degrees of freedom 
# Null hypothesis probability =   1.614842e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.939992 ( -0.134474  0.134689 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.86882e-08 ( -1.28031e-08  1.29328e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.076 sec. to    0.924 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.261971     ( -1.38608   1.03691 )
Epeak [keV] : 105.189      ( -27.9044 200.969 )
Norm@50keV  : 2.86938E-02    ( -0.0183116   0.0753928 )
------------------------------------------------------------
# Chi-Squared =          63.06 using 59 PHA bins.
# Reduced chi-squared =          1.126 for     56 degrees of freedom 
# Null hypothesis probability =   2.408942e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.899358 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.45541e-08 ( -1.3757e-08  1.36765e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.076 sec. to    0.924 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.262247   ( -0.978134   1.14864 )
beta        : -10.00000    ( 8.25016e+08   8.25016e+08 )
Epeak [keV] : 105.166      ( -27.895 200.974 )
Norm@50keV   : 2.87047E-02    ( -0.0183231   0.0754858 )
------------------------------------------------------------
# Chi-Squared =          63.06 using 59 PHA bins.
# Reduced chi-squared =          1.147 for     55 degrees of freedom 
# Null hypothesis probability =   2.127862e-01
 
Photon flux (15-150 keV)    in 1 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:
Mon Aug  2 12:24:06 EDT 2010