batgrbproduct Analysis for Trigger=330074
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 batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Tue Jul 26 15:03:59 EDT 2011
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger330074/SDC
======================================================================
Trigger: 00330074 Segment: 000
BAT Trigger Time: 244602168 [s; MET]
Trigger Stop: 244602536 [s; MET]
UTC: 2008-10-02T01:02:44.857920 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 104.692656732975 Dec: -7.24333773652404 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 8.43
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.43
Flight Position: [ source = BAT ]
RA: 104.692656732975 Dec: -7.24333773652404 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 104.551622900919 Dec: -7.19936307026248 [deg; J2000]
{ 06h 58m 12.4s , -07d 11' 57.7" }
+/- 2.89409078731496 [arcmin] (estimated 90% radius based on SNR)
+/- 1.7439137507925 [arcmin] (formal 1-sigma fit error)
SNR: 6.66523256397224
Angular difference between Flight and Ground position is 8.799776 arcmin
Partial Coding Fraction: 0.4257812 [ including projection effects ]
Duration
T90: 368 +/-
Measured from: 0
to: 368 [s; relative to TRIGTIME]
T50: 368 +/-
Measured from: 0
to: 368 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 368 second)
Measured from: 0
to: 368 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 368 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.444580 0.147459 0.187247 -0.220293
0.133564 0.132678 0.116354 0.102678 [error]
Peak 0.444580 0.147459 0.187247 -0.220293
0.133564 0.132678 0.116354 0.102678 [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 1.71e-07 1.01e-07 3.76e-08 1.86e-08 3.20e-07 3.28e-07 erg/cm2
Error 7.50e-08 7.62e-08 6.50e-08 8.75e-08 1.91e-07 2.33e-07 erg/cm2
Peak flux Power-law 1.86e-02 6.18e-03 1.15e-03 2.52e-04 2.61e-02 2.62e-02 ph/cm2/s
Error 8.27e-03 4.46e-03 1.92e-03 1.04e-03 1.14e-02 1.15e-02 ph/cm2/s
Fluence Cutoff-PL 1.72e-07 1.01e-07 3.64e-08 1.56e-08 3.14e-07 3.14e-07 erg/cm2
Error 8.90e-08 8.29e-08 6.51e-08 8.56e-08 1.95e-07 1.84e-07 erg/cm2
Peak flux Cutoff-PL 1.86e-02 6.18e-03 1.12e-03 2.17e-04 2.61e-02 2.62e-02 ph/cm2/s
Error 7.93e-03 4.95e-03 1.91e-03 1.03e-03 1.48e-02 1.16e-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 1.86e-02 2.59e-02 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 1.16e-02 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 3.422 1.598 - - 6.86e-05 8.63e-05 74.860 57
CPL 1.000 0.000 50.0 0.0 4.67e-04 0.00e+00 80.560 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.422 1.598 - - 6.86e-05 8.63e-05 74.860 57
CPL 1.000 0.000 50.0 0.0 4.67e-04 0.00e+00 80.560 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 368.000 0.000 368.000
T90 368.000 0.000 368.000
T50 368.000 0.000 368.000
Peak 368.000 0.000 368.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
104.5516 -7.1994 0.0287 44.9 -173.5 1.9467 6.7 TRIG_00330074
------------------------------------------
Foreground time interval of the image:
0.000 303.090 (delta_t = 303.090 [sec])
361.000 368.000 (delta_t = 7.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) 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.
- 5) 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.
- 6) 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
Multiple GTIs in the spectrum
tstart tstop
0.000000 303.090300
361.000000 368.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.42192 ( -1.16819 2.02706 )
Norm@50keV : 6.86405E-05 ( -6.86405e-05 0.000103954 )
------------------------------------------------------------
# Chi-Squared = 74.86 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.644290e-02
Photon flux (15-150 keV) in 310.1 sec: 2.60684E-02 ( -0.0113203 0.0114513 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.19552e-07 ( -1.65795e-07 2.15986e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 303.090300
361.000000 368.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 4.66560E-04 ( )
------------------------------------------------------------
# Chi-Squared = 80.56 using 59 PHA bins.
# Reduced chi-squared = 1.438 for 56 degrees of freedom
# Null hypothesis probability = 1.747362e-02
Photon flux (15-150 keV) in 310.1 sec: 2.61008E-02 ( -0.0179433 0.0116497 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.14066e-07 ( -1.69198e-07 2.20819e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 303.090300
361.000000 368.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -7.00280 ( 3.28998 4.25558 )
beta : -3.42193 ( -2.02703 1.16858 )
Epeak [keV] : 116.219 ( -116.219 -116.219 )
Norm@50keV : 9.32919E-03 ( -0.0093292 0.0141288 )
------------------------------------------------------------
# Chi-Squared = 74.86 using 59 PHA bins.
# Reduced chi-squared = 1.361 for 55 degrees of freedom
# Null hypothesis probability = 3.868998e-02
Photon flux (15-150 keV) in 310.1 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] : 4.15573 (-1.49704 2.21578)
R^2/D10^2 : 0.552587 (-0.552587 5.98829)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 74.69 using 59 PHA bins.
# Reduced chi-squared = 1.310 for 57 degrees of freedom
# Null hypothesis probability = 5.801163e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.870e-07 1.147e-07
25- 50 7.517e-08 5.101e-08
50-150 1.146e-09 1.314e-09
15-150 2.633e-07 1.654e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.0355 (-6.18808 25.1705)
Norm : 0.731623 (-0.731621 4.43526)
------------------------------------------------------------
# Chi-Squared = 74.84 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.663981e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.799e-07 1.108e-07
25- 50 8.795e-08 5.817e-08
50-150 7.809e-09 8.649e-09
15-150 2.756e-07 1.713e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.89912 (-3.89891 2.16598)
R1^2/D10^2 : 0.720344 (-0.72196 -0.72196)
kT2 [keV] : 21.6205 (-21.6753 -21.6753)
R2^2/D10^2 : 1.89306E-04 (-0.000187257 -0.000187257)
------------------------------------------------------------
# Chi-Squared = 74.08 using 59 PHA bins.
# Reduced chi-squared = 1.347 for 55 degrees of freedom
# Null hypothesis probability = 4.406094e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.844e-07 1.172e-07
25- 50 8.693e-08 5.307e-08
50-150 9.412e-08 7.249e-08
15-150 3.654e-07 2.160e-07
Peak spectrum fit
Power-law model
Time interval is from 361.000 sec. to 368.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.42192 ( -1.16819 2.02706 )
Norm@50keV : 6.86405E-05 ( -6.86405e-05 0.000103954 )
------------------------------------------------------------
# Chi-Squared = 74.86 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.644290e-02
Photon flux (15-150 keV) in 310.1 sec: 2.60684E-02 ( -0.0113203 0.0114513 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.19552e-07 ( -1.65795e-07 2.15986e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 361.000 sec. to 368.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 4.66560E-04 ( )
------------------------------------------------------------
# Chi-Squared = 80.56 using 59 PHA bins.
# Reduced chi-squared = 1.438 for 56 degrees of freedom
# Null hypothesis probability = 1.747362e-02
Photon flux (15-150 keV) in 310.1 sec: 2.61008E-02 ( -0.0179433 0.0116497 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.14066e-07 ( -1.69198e-07 2.20819e-07 ) ergs/cm2
Band function
Time interval is from 361.000 sec. to 368.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -7.00280 ( 3.28998 4.25558 )
beta : -3.42193 ( -2.02703 1.16858 )
Epeak [keV] : 116.219 ( -116.219 -116.219 )
Norm@50keV : 9.32919E-03 ( -0.0093292 0.0141288 )
------------------------------------------------------------
# Chi-Squared = 74.86 using 59 PHA bins.
# Reduced chi-squared = 1.361 for 55 degrees of freedom
# Null hypothesis probability = 3.868998e-02
Photon flux (15-150 keV) in 310.1 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] : 4.15573 (-1.49704 2.21578)
R^2/D10^2 : 0.552587 (-0.552587 5.98829)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 74.69 using 59 PHA bins.
# Reduced chi-squared = 1.310 for 57 degrees of freedom
# Null hypothesis probability = 5.801163e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.870e-07 1.153e-07
25- 50 7.517e-08 5.431e-08
50-150 1.146e-09 1.235e-09
15-150 2.633e-07 1.625e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.0355 (-6.18808 25.1705)
Norm : 0.731623 (-0.731621 4.43526)
------------------------------------------------------------
# Chi-Squared = 74.84 using 59 PHA bins.
# Reduced chi-squared = 1.313 for 57 degrees of freedom
# Null hypothesis probability = 5.663981e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.799e-07 1.094e-07
25- 50 8.795e-08 5.903e-08
50-150 7.809e-09 1.002e-08
15-150 2.756e-07 1.809e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.89912 (-3.89891 2.16598)
R1^2/D10^2 : 0.720344 (-0.72196 -0.72196)
kT2 [keV] : 21.6205 (-21.6753 -21.6753)
R2^2/D10^2 : 1.89306E-04 (-0.000187257 -0.000187257)
------------------------------------------------------------
# Chi-Squared = 74.08 using 59 PHA bins.
# Reduced chi-squared = 1.347 for 55 degrees of freedom
# Null hypothesis probability = 4.406094e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.844e-07 1.123e-07
25- 50 8.693e-08 5.545e-08
50-150 9.412e-08 8.487e-08
15-150 3.654e-07 2.334e-07
Plot creation:
Tue Jul 26 17:23:36 EDT 2011