batgrbproduct Analysis for Trigger=141093
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 Jan 10 18:23:47 EST 2008
Host Name: gcn5
Current Working Dir: /local/data/raid2/prebascript/trigger141093/SDC
======================================================================
Trigger: 00141093 Segment: 000
BAT Trigger Time: 140463974.272 [s; MET]
Trigger Stop: 140463982.464 [s; MET]
UTC: 2005-06-14T17:46:14.699680 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 138.334784548376 Dec: -39.7293903258188 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.27
Image Trigger?: NO
Rate S/N Ratio: 9.79795897113271 [ if not an image trigger ]
Image S/N Ratio: 12.27
Flight Position: [ source = BAT ]
RA: 138.334784548376 Dec: -39.7293903258188 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 138.131583381935 Dec: -39.8434423561292 [deg; J2000]
{ 09h 12m 31.6s , -39d 50' 36.4" }
+/- nan [arcmin] (estimated 90% radius based on SNR)
+/- 177.9658644371 [arcmin] (formal 1-sigma fit error)
SNR: -0.218638707615365
RA = 9h 12m 31.6s (138.131583 deg.)
Dec = -39d 50' 36" (-39.843442 deg.)
Angular difference between Flight and Ground position is 11.601849 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 8.19199997186661 +/-
Measured from: 0
to: 8.19199997186661 [s; relative to TRIGTIME]
T50: 8.19199997186661 +/-
Measured from: 0
to: 8.19199997186661 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 8.19199997186661 second)
Measured from: 0
to: 8.19199997186661 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 8.19199997186661 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.012990 -0.008969 0.000418 0.005411
0.014052 0.014133 0.012422 0.013096 [error]
Peak 0.012990 -0.008969 0.000418 0.005411
0.014052 0.014133 0.012422 0.013096 [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 7.60e-12 1.02e-10 1.23e-09 1.18e-07 5.74e-09 1.45e-09 erg/cm2
Error 3.10e-09 3.15e-09 5.86e-09 3.33e-07 1.84e-08 0.00e+00 erg/cm2
Peak flux Power-law 2.84e-05 1.97e-04 1.18e-03 3.45e-02 4.04e-03 4.08e-03 ph/cm2/s
Error 1.25e-02 6.88e-03 6.03e-03 9.71e-02 2.07e-02 0.00e+00 ph/cm2/s
Fluence Cutoff-PL 2.03e-09 7.94e-10 9.06e-12 1.61e-16 2.83e-09 1.42e-09 erg/cm2
Error 4.22e-09 3.75e-09 6.43e-09 8.66e-10 6.57e-09 0.00e+00 erg/cm2
Peak flux Cutoff-PL 8.10e-03 2.07e-03 1.38e-05 1.44e-10 1.02e-02 9.39e-03 ph/cm2/s
Error 1.69e-02 7.82e-03 5.88e-03 5.37e-05 2.15e-02 2.17e-02 ph/cm2/s
Fluence Band 2.43e-09 8.08e-10 1.35e-11 1.61e-13 3.40e-09 1.60e-09 erg/cm2
Error 4.48e-09 3.63e-09 6.00e-09 3.03e-08 2.14e-08 0.00e+00 erg/cm2
Peak flux Band 2.11e-05 1.69e-04 1.05e-03 3.47e-02 3.92e-03 3.54e-02 ph/cm2/s
Error 8.35e-05 3.50e-03 5.10e-03 9.69e-02 1.00e-01 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.018 6.500 - - 1.45e-05 1.66e-04 65.332 57
CPL 1.292 6.498 6.2 5000.0 1.08e-03 0.00e+00 65.285 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.018 6.500 - - 1.45e-05 1.66e-04 65.332 57
CPL 1.292 6.497 6.2 5000.0 1.08e-03 0.00e+00 65.285 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 8.192 0.000 8.192
T90 8.192 0.000 8.192
T50 8.192 0.000 8.192
Peak 8.192 0.000 8.192
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
138.1316 -39.8434 0.8905 12.1 -45.6 -0.0058 -0.2 TRIG_00141093
------------------------------------------
Foreground time interval of the image:
0.000 8.192 (delta_t = 8.192 [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.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.01848 ( -6.01848 6.98152 )
Norm@50keV : 1.446203E-05 ( -1.446203E-05 3.183187E-04) )
------------------------------------------------------------
Chi-Squared = 65.33241 using 59 PHA bins.
Reduced chi-squared = 1.146183 for 57 degrees of freedom
Null hypothesis probability = 0.210
Photon flux (15-150 keV) in 8.192 sec: 4.036134E-03 ( -0.00403613 0.0373381 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.74444e-09 ( -5.74444e-09 3.10672e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29184 ( -4.29184 8.70375 )
Epeak [keV] : 6.17487 ( -6.16487 9993.83 )
Norm@50keV : 1.083217E-03 ( )
------------------------------------------------------------
Chi-Squared = 65.28508 using 59 PHA bins.
Reduced chi-squared = 1.165805 for 56 degrees of freedom
Null hypothesis probability = 0.185
Photon flux (15-150 keV) in 8.192 sec: 1.021512E-02 ( -0.0102151 0.0328776 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.83315e-09 ( -2.83315e-09 1.03014e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.458165 ( -9.54183 5.45816 )
beta : 1.60564 ( -11.6056 8.39436 )
Epeak [keV] : 45.4286 ( -45.3286 9954.57 )
Norm@50keV : 1.387526E-05 ( -1.387526E-05 6.40658 )
------------------------------------------------------------
Chi-Squared = 65.23991 using 59 PHA bins.
Reduced chi-squared = 1.186180 for 55 degrees of freedom
Null hypothesis probability = 0.162
Photon flux (15-150 keV) in 8.192 sec: 3.915548E-03 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.40369e-09 ( -3.40369e-09 3.94761e-08 ) ergs/cm2
Peak spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.01848 ( -6.01848 6.98152 )
Norm@50keV : 1.446203E-05 ( -1.446203E-05 3.183187E-04) )
------------------------------------------------------------
Chi-Squared = 65.33241 using 59 PHA bins.
Reduced chi-squared = 1.146183 for 57 degrees of freedom
Null hypothesis probability = 0.210
Photon flux (15-150 keV) in 8.192 sec: 4.036134E-03 ( -0.00403613 0.0373381 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.74444e-09 ( -5.74444e-09 3.10672e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29184 ( -4.29184 8.70252 )
Epeak [keV] : 6.17487 ( -6.16487 9993.83 )
Norm@50keV : 1.083217E-03 ( )
------------------------------------------------------------
Chi-Squared = 65.28508 using 59 PHA bins.
Reduced chi-squared = 1.165805 for 56 degrees of freedom
Null hypothesis probability = 0.185
Photon flux (15-150 keV) in 8.192 sec: 1.021512E-02 ( -0.0102151 0.0328776 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.83315e-09 ( -2.83315e-09 1.03014e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.458165 ( -9.54183 5.45816 )
beta : 1.60564 ( -11.6056 8.39436 )
Epeak [keV] : 45.4286 ( -45.3286 9954.57 )
Norm@50keV : 1.387526E-05 ( -1.387526E-05 6.40658 )
------------------------------------------------------------
Chi-Squared = 65.23991 using 59 PHA bins.
Reduced chi-squared = 1.186180 for 55 degrees of freedom
Null hypothesis probability = 0.162
Photon flux (15-150 keV) in 8.192 sec: 3.915548E-03 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.40369e-09 ( -3.40369e-09 3.94761e-08 ) ergs/cm2
Plot creation:
Thu Jan 10 18:29:15 EST 2008