batgrbproduct Analysis for Trigger=333010
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This page will be updated for up to 8 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.41
Process Start Time (local time): Thu Oct 30 05:19:58 EDT 2008
Host Name: gcn5
Current Working Dir: /local/data/raid2/prebascript/trigger333010/GCN5_download_cron
======================================================================
Trigger: 00333010 Segment: 000
BAT Trigger Time: 247001048 [s; MET]
Trigger Stop: 247001120 [s; MET]
UTC: 2008-10-29T19:24:04.786120 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.594882425912 Dec: 35.2421649110461 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.89
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 6.89
Flight Position: [ source = BAT ]
RA: 299.594882425912 Dec: 35.2421649110461 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.58050832101 Dec: 35.1783441946643 [deg; J2000]
{ 19h 58m 19.3s , +35d 10' 42.0" }
+/- 2.79874501917371 [arcmin] (estimated 90% radius based on SNR)
+/- 1.75307170495697 [arcmin] (formal 1-sigma fit error)
SNR: 6.99196638770335
Angular difference between Flight and Ground position is 3.893538 arcmin
Partial Coding Fraction: 0.06542969 [ including projection effects ]
Duration
T90: 72 +/-
Measured from: 0
to: 72 [s; relative to TRIGTIME]
T50: 72 +/-
Measured from: 0
to: 72 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 72 second)
Measured from: 0
to: 72 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 72 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.639297 0.981744 0.440748 0.195298
0.170828 0.173355 0.163026 0.166766 [error]
Peak 0.639297 0.981744 0.440748 0.195298
0.170828 0.173355 0.163026 0.166766 [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 2.71e-07 3.91e-07 4.21e-07 8.43e-07 1.34e-06 1.91e-06 erg/cm2
Error 8.75e-08 8.86e-08 1.57e-07 6.41e-07 3.66e-07 8.08e-07 erg/cm2
Peak flux Power-law 1.22e-01 9.74e-02 5.24e-02 4.11e-02 2.90e-01 3.13e-01 ph/cm2/s
Error 4.03e-02 2.20e-02 1.89e-02 2.89e-02 6.59e-02 7.18e-02 ph/cm2/s
Fluence Cutoff-PL 2.36e-07 4.48e-07 4.10e-07 1.63e-07 1.21e-06 1.27e-06 erg/cm2
Error 1.08e-07 1.60e-07 1.80e-07 7.11e-07 3.99e-07 8.75e-07 erg/cm2
Peak flux Cutoff-PL 1.05e-01 1.11e-01 5.26e-02 1.08e-02 2.77e-01 2.79e-01 ph/cm2/s
Error 5.01e-02 3.10e-02 2.21e-02 3.35e-02 6.94e-02 8.01e-02 ph/cm2/s
Fluence Band 2.36e-07 4.44e-07 4.08e-07 2.84e-07 1.23e-06 1.40e-06 erg/cm2
Error 1.30e-07 1.15e-07 1.33e-07 7.33e-07 3.78e-07 0.00e+00 erg/cm2
Peak flux Band 1.06e-01 1.10e-01 5.24e-02 1.62e-02 2.79e-01 2.92e-01 ph/cm2/s
Error 4.90e-02 2.82e-02 1.71e-02 3.27e-02 6.74e-02 8.20e-02 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.895 0.425 - - 2.03e-03 5.61e-04 50.868 57
CPL 0.663 2.210 47.2 5000.0 9.87e-03 1.97e-01 49.814 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.895 0.425 - - 2.03e-03 5.61e-04 50.868 57
CPL 0.663 2.210 47.2 5000.0 9.87e-03 1.97e-01 49.814 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 72.000 0.000 72.000
T90 72.000 0.000 72.000
T50 72.000 0.000 72.000
Peak 72.000 0.000 72.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.5805 +35.1783 0.0274 43.4 -116.8 2.5100 7.0 TRIG_00333010
------------------------------------------
Foreground time interval of the image:
0.000 72.000 (delta_t = 72.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 5) Time of each bin is in the middle of the bin.
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:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.89527 ( -0.400269 0.449450 )
Norm@50keV : 2.027795E-03 ( -5.738349E-04 5.480258E-04) )
------------------------------------------------------------
Chi-Squared = 50.86822 using 59 PHA bins.
Reduced chi-squared = 0.8924249 for 57 degrees of freedom
Null hypothesis probability = 0.703
Photon flux (15-150 keV) in 72.00 sec: 0.290431 ( -0.065858 0.065891 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34259e-06 ( -3.58704e-07 3.74105e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.662966 ( -2.93749 1.48301 )
Epeak [keV] : 47.1634 ( -47.1534 9952.84 )
Norm@50keV : 9.873762E-03 ( -9.873762E-03 0.384970 )
------------------------------------------------------------
Chi-Squared = 49.81422 using 59 PHA bins.
Reduced chi-squared = 0.8895397 for 56 degrees of freedom
Null hypothesis probability = 0.707
Photon flux (15-150 keV) in 72.00 sec: 0.277035 ( -0.069506 0.069211 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21339e-06 ( -3.735e-07 4.24872e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.11730 ( -8.88270 4.28817 )
beta : -3.12587 ( -6.87413 13.0558 )
Epeak [keV] : 60.7675 ( -47.1325 9952.77 )
Norm@50keV : 4.834813E-03 ( -9.561270E-03 96.2636 )
------------------------------------------------------------
Chi-Squared = 50.24079 using 59 PHA bins.
Reduced chi-squared = 0.9134688 for 55 degrees of freedom
Null hypothesis probability = 0.657
Photon flux (15-150 keV) in 72.00 sec: 0.278759 ( -0.067216 0.067567 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.23137e-06 ( -3.49229e-07 4.0747e-07 ) ergs/cm2
Peak spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.89527 ( -0.400269 0.449450 )
Norm@50keV : 2.027795E-03 ( -5.738349E-04 5.480258E-04) )
------------------------------------------------------------
Chi-Squared = 50.86822 using 59 PHA bins.
Reduced chi-squared = 0.8924249 for 57 degrees of freedom
Null hypothesis probability = 0.703
Photon flux (15-150 keV) in 72.00 sec: 0.290431 ( -0.065858 0.065891 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.34259e-06 ( -3.58704e-07 3.74105e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.662966 ( -2.93749 1.48301 )
Epeak [keV] : 47.1634 ( -47.1534 9952.84 )
Norm@50keV : 9.873762E-03 ( -9.873762E-03 0.384970 )
------------------------------------------------------------
Chi-Squared = 49.81422 using 59 PHA bins.
Reduced chi-squared = 0.8895397 for 56 degrees of freedom
Null hypothesis probability = 0.707
Photon flux (15-150 keV) in 72.00 sec: 0.277035 ( -0.069506 0.069211 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21339e-06 ( -3.735e-07 4.24872e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 72.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.11730 ( -8.88270 4.28817 )
beta : -3.12587 ( -6.87413 13.0558 )
Epeak [keV] : 60.7675 ( -47.1325 9952.77 )
Norm@50keV : 4.834813E-03 ( -9.561270E-03 96.2636 )
------------------------------------------------------------
Chi-Squared = 50.24079 using 59 PHA bins.
Reduced chi-squared = 0.9134688 for 55 degrees of freedom
Null hypothesis probability = 0.657
Photon flux (15-150 keV) in 72.00 sec: 0.278759 ( -0.067216 0.067567 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.23137e-06 ( -3.49229e-07 4.0747e-07 ) ergs/cm2
Plot creation:
Thu Oct 30 05:47:04 EDT 2008