batgrbproduct Analysis for Trigger=434360

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Sep 17 12:15:34 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger434360/GCN5_download_cron
======================================================================

  Trigger: 00434360      Segment: 000

  BAT Trigger Time: 306392611.968   [s; MET]
      Trigger Stop: 306392616.064   [s; MET]
               UTC: 2010-09-17T05:03:25.783360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 289.264654463964   Dec: -17.1044750247871  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.15
     Image Trigger?:     NO
     Rate S/N Ratio:     7.87400787401181  [ if not an image trigger ]
     Image S/N Ratio:    7.15

  Flight Position:   [ source = BAT ]
    RA: 289.264654463964   Dec: -17.1044750247871  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 289.250423050522   Dec: -17.1200259405498  [deg; J2000]  
        { 19h 17m 00.1s , -17d 07' 12.1" }
         +/- 2.08616904352347 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.915215448751519 [arcmin] (formal 1-sigma fit error)
    SNR: 10.6390980980969
 
  Angular difference between Flight and Ground position is 1.239590 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 65.4560000300407 +/- 21.8778105122229
        Measured from: -0.703999876976013
                   to: 64.7520001530647     [s; relative to TRIGTIME]
     T50: 25.5680000185966 +/- 8.70489701505213
        Measured from: 4.80000013113022
                   to: 30.3680001497269     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.22000002861023     
                   to: 4.22000002861023     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.12800002098083     
                   to: 75.8240000009537     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.533359   0.499075   0.371050   0.087975
           0.058506   0.059127   0.051613   0.045567 [error]
 Peak      0.016908   0.032737   0.016116   0.016283
           0.007057   0.007088   0.006358   0.005415 [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 1.39e-07 2.30e-07 2.89e-07 7.24e-07 8.60e-07 1.38e-06   erg/cm2
              Error 2.70e-08 2.71e-08 5.28e-08 2.84e-07 1.21e-07 3.28e-07   erg/cm2
Peak flux Power-law 2.26e-01 2.01e-01 1.23e-01 1.14e-01 5.99e-01 6.64e-01   ph/cm2/s
              Error 9.77e-02 5.58e-02 5.34e-02 1.03e-01 1.65e-01 1.91e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.39e-07 2.30e-07 2.89e-07 7.18e-07 8.60e-07 1.38e-06   erg/cm2
              Error 2.70e-08 2.71e-08 5.29e-08 2.82e-07 1.21e-07 3.26e-07   erg/cm2
Peak flux Cutoff-PL 2.26e-01 2.01e-01 1.23e-01 1.13e-01 5.99e-01 6.57e-01   ph/cm2/s
              Error 9.77e-02 5.58e-02 5.34e-02 1.82e-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 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    1.669    0.231    -      -           1.19e-03 1.55e-04   72.490 57
CPL   1.678    0.232    9999.4    0.0      1.19e-03 0.00e+00   72.500 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    1.710    0.555    -      -           4.49e-03 1.48e-03   73.640 57
CPL   1.733    0.771    9999.4    0.0      4.42e-03 0.00e+00   73.640 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: 42.816000 sec.
T50 in the 50-300 keV band: 24.576000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   77.952   -2.128   75.824
T90    65.456   -0.704   64.752
T50    25.568    4.800   30.368
Peak    1.000    3.220    4.220

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  289.2504 -17.1200 0.0181   24.6 -106.1       1.3539    10.6  TRIG_00434360       
------------------------------------------
 
Foreground time interval of the image:
 -2.128  75.824 (delta_t =  77.952 [sec])
Background time interval of the image:
-235.867  -2.128 (delta_t = 233.739 [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   -2.128 sec. to   75.824 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66931     ( -0.227341   0.234036 )
Norm@50keV  : 1.18881E-03    ( -0.000157499   0.000153305 )
------------------------------------------------------------
# Chi-Squared =          72.49 using 59 PHA bins.
# Reduced chi-squared =          1.272 for     57 degrees of freedom 
# Null hypothesis probability =   8.109477e-02
 
Photon flux (15-150 keV)    in 77.95 sec: 0.156232 ( -0.0184084  0.0184309 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.60248e-07 ( -1.20263e-07  1.2242e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.128 sec. to   75.824 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.67770     ( -0.237523   0.22653 )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 1.18757E-03    (     )
------------------------------------------------------------
# Chi-Squared =          72.50 using 59 PHA bins.
# Reduced chi-squared =          1.295 for     56 degrees of freedom 
# Null hypothesis probability =   6.817151e-02
 
Photon flux (15-150 keV)    in 77.95 sec: 0.156168 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.60139e-07 ( -1.20285e-07  1.22444e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.128 sec. to   75.824 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32692   ( 1.32696   1.32696 )
beta        : -1.66919    ( 1.66924   0.227324 )
Epeak [keV] : 22.4566      ( -22.4465 -22.4465 )
Norm@50keV   : 2.77518E-03    ( -0.00277542   109.691 )
------------------------------------------------------------
# Chi-Squared =          72.49 using 59 PHA bins.
# Reduced chi-squared =          1.318 for     55 degrees of freedom 
# Null hypothesis probability =   5.711012e-02
 
Photon flux (15-150 keV)    in 77.95 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    3.220 sec. to    4.220 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70969     ( -0.532587   0.578272 )
Norm@50keV  : 4.49375E-03    ( -0.00153646   0.00142332 )
------------------------------------------------------------
# Chi-Squared =          73.64 using 59 PHA bins.
# Reduced chi-squared =          1.292 for     57 degrees of freedom 
# Null hypothesis probability =   6.821131e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.598868 ( -0.165394  0.165424 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.15762e-08 ( -1.40294e-08  1.47783e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    3.220 sec. to    4.220 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.73270     ( -0.982568   0.559506 )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 4.41520E-03    (     )
------------------------------------------------------------
# Chi-Squared =          73.64 using 59 PHA bins.
# Reduced chi-squared =          1.315 for     56 degrees of freedom 
# Null hypothesis probability =   5.703489e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.598639 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.15622e-08 ( -1.40279e-08  1.47799e-08 ) ergs/cm2
 
Band function
Time interval is from    3.220 sec. to    4.220 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.35958   ( 1.3599   1.3599 )
beta        : -1.70919    ( 1.70937   0.532085 )
Epeak [keV] : 19.6208      ( -19.424 -19.424 )
Norm@50keV   : 1.09257E-02    ( -0.0109528   5574.48 )
------------------------------------------------------------
# Chi-Squared =          73.64 using 59 PHA bins.
# Reduced chi-squared =          1.339 for     55 degrees of freedom 
# Null hypothesis probability =   4.740954e-02
 
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:
Fri Sep 17 12:42:29 EDT 2010