batgrbproduct Analysis for Trigger=533060
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): Sun Sep 9 18:19:55 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger533060/GCN5_download_cron
======================================================================
Trigger: 00533060 Segment: 000
BAT Trigger Time: 368847732.864 [s; MET]
Trigger Stop: 368847734.272 [s; MET]
UTC: 2012-09-09T01:42:03.235040 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 275.684892653149 Dec: -59.4263133760398 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.77
Image Trigger?: NO
Rate S/N Ratio: 13 [ if not an image trigger ]
Image S/N Ratio: 7.77
Flight Position: [ source = BAT ]
RA: 275.684892653149 Dec: -59.4263133760398 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 275.735765621294 Dec: -59.4320563941144 [deg; J2000]
{ 18h 22m 56.6s , -59d 25' 55.4" }
+/- 1.99105357116786 [arcmin] (estimated 90% radius based on SNR)
+/- 0.844007635915696 [arcmin] (formal 1-sigma fit error)
SNR: 11.3725283878184
Angular difference between Flight and Ground position is 1.590230 arcmin
Partial Coding Fraction: 0.4882812 [ including projection effects ]
Duration
T90: 169.831999957561 +/- 340.528102357594
Measured from: 297.652000069618
to: 467.48400002718 [s; relative to TRIGTIME]
T50: 23.5439999103546 +/- 381.837520940269
Measured from: 394.380000114441
to: 417.924000024796 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.899999976158142
to: 1.89999997615814 [s; relative to TRIGTIME]
Total Fluence
Measured from: -32.8840000033379
to: 542.339999973774 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.845099 3.884341 3.554878 1.044057
0.189564 0.194244 0.180506 0.185153 [error]
Peak 0.033335 0.076480 0.094057 0.023953
0.009554 0.010756 0.010425 0.010720 [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 9.21e-07 1.78e-06 2.68e-06 8.72e-06 7.54e-06 1.41e-05 erg/cm2
Error 9.30e-08 1.06e-07 1.78e-07 1.30e-06 4.36e-07 1.41e-06 erg/cm2
Peak flux Power-law 4.06e-01 5.47e-01 5.41e-01 9.62e-01 1.81e+00 2.46e+00 ph/cm2/s
Error 1.16e-01 9.61e-02 8.10e-02 3.06e-01 2.62e-01 3.71e-01 ph/cm2/s
Fluence Cutoff-PL 8.90e-07 1.81e-06 2.72e-06 6.82e-06 1.22e-05 0.00e+00 erg/cm2
Error 1.14e-07 1.19e-07 1.96e-07 3.01e-06 2.94e-06 0.00e+00 erg/cm2
Peak flux Cutoff-PL 2.72e-01 5.72e-01 6.23e-01 3.40e-01 1.70e+00 1.81e+00 ph/cm2/s
Error 1.48e-01 1.15e-01 1.09e-01 3.12e-01 2.81e-01 4.27e-01 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 1.413 0.097 - - 1.37e-03 7.23e-05 54.760 57
CPL 1.246 0.308 239.7 0.0 1.64e-03 6.06e-04 54.180 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.015 0.237 - - 1.57e-02 2.22e-03 49.930 57
CPL -0.405 1.429 97.9 100.7 6.49e-02 1.49e-01 45.530 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: 191.552000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 575.224 -32.884 542.340
T90 169.832 297.652 467.484
T50 23.544 394.380 417.924
Peak 1.000 0.900 1.900
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
275.7358 -59.4321 0.0169 40.5 4.2 2.3277 11.4 TRIG_00533060
------------------------------------------
Foreground time interval of the image:
-32.884 21.337 (delta_t = 54.221 [sec])
Background time interval of the image:
-60.864 -32.884 (delta_t = 27.980 [sec])
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
-32.884000 103.756000
105.136000 295.656000
297.136000 542.340000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.41264 ( -0.0972148 0.0970804 )
Norm@50keV : 1.36706E-03 ( -7.2307e-05 7.22571e-05 )
------------------------------------------------------------
# Chi-Squared = 54.76 using 59 PHA bins.
# Reduced chi-squared = 0.9608 for 57 degrees of freedom
# Null hypothesis probability = 5.594324e-01
Photon flux (15-150 keV) in 572.4 sec: 0.166967 ( -0.00928552 0.00930846 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.54189e-06 ( -4.35038e-07 4.3682e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-32.884000 103.756000
105.136000 295.656000
297.136000 542.340000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.24618 ( -0.400075 0.215505 )
Epeak [keV] : 239.664 ( -239.664 -239.664 )
Norm@50keV : 1.64238E-03 ( -0.000334247 0.000877692 )
------------------------------------------------------------
# Chi-Squared = 54.18 using 59 PHA bins.
# Reduced chi-squared = 0.9676 for 56 degrees of freedom
# Null hypothesis probability = 5.439234e-01
Photon flux (15-150 keV) in 572.4 sec: 0.165341 ( -0.009937 0.00989 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.22407e-05 ( -2.78793e-06 3.09502e-06 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-32.884000 103.756000
105.136000 295.656000
297.136000 542.340000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99616 ( -499.803 -499.803 )
beta : -1.43133 ( -0.101991 0.100895 )
Epeak [keV] : 21.4548 ( -21.4545 5.23719 )
Norm@50keV : 336.998 ( -337.045 14628.5 )
------------------------------------------------------------
# Chi-Squared = 53.88 using 59 PHA bins.
# Reduced chi-squared = 0.9797 for 55 degrees of freedom
# Null hypothesis probability = 5.173241e-01
Photon flux (15-150 keV) in 572.4 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] : 16.6575 ( )
R^2/D10^2 : 1.31210E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 126.38 using 59 PHA bins.
# Reduced chi-squared = 2.2172 for 57 degrees of freedom
# Null hypothesis probability = 3.594182e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.267e-07 4.679e-08
25- 50 1.857e-06 1.342e-07
50-150 3.655e-06 3.254e-07
15-150 5.939e-06 3.907e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.994 ( )
Norm : 0.691470 (-0.69147 -0.69147)
------------------------------------------------------------
# Chi-Squared = 61.26 using 59 PHA bins.
# Reduced chi-squared = 1.075 for 57 degrees of freedom
# Null hypothesis probability = 3.258046e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.855e-07 5.077e-07
25- 50 1.896e-06 9.799e-07
50-150 4.158e-06 2.146e-06
15-150 7.039e-06 3.635e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.53052 (-1.76764 2.096)
R1^2/D10^2 : 0.124634 (-0.065831 0.186293)
kT2 [keV] : 28.7236 (-5.61883 12.2728)
R2^2/D10^2 : 1.65229E-03 (-0.00114919 0.00211553)
------------------------------------------------------------
# Chi-Squared = 58.88 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 55 degrees of freedom
# Null hypothesis probability = 3.355348e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.221e-07 1.865e-07
25- 50 1.854e-06 3.583e-07
50-150 4.729e-06 1.167e-06
15-150 7.405e-06 1.659e-06
Peak spectrum fit
Power-law model
Time interval is from 0.900 sec. to 1.900 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.01531 ( -0.241262 0.232531 )
Norm@50keV : 1.56874E-02 ( -0.00222657 0.00221703 )
------------------------------------------------------------
# Chi-Squared = 49.93 using 59 PHA bins.
# Reduced chi-squared = 0.8759 for 57 degrees of freedom
# Null hypothesis probability = 7.352526e-01
Photon flux (15-150 keV) in 1 sec: 1.80791 ( -0.261295 0.261944 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.68737e-07 ( -2.51954e-08 2.5365e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.900 sec. to 1.900 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.405408 ( -1.67603 1.1828 )
Epeak [keV] : 97.8698 ( -24.3884 176.925 )
Norm@50keV : 6.48626E-02 ( -0.0648688 0.233401 )
------------------------------------------------------------
# Chi-Squared = 45.53 using 59 PHA bins.
# Reduced chi-squared = 0.8131 for 56 degrees of freedom
# Null hypothesis probability = 8.400172e-01
Photon flux (15-150 keV) in 1 sec: 1.69558 ( -0.28163 0.2804 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9201e-07 ( -5.3123e-08 1.48645e-07 ) ergs/cm2
Band function
Time interval is from 0.900 sec. to 1.900 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.405297 ( -1.01311 0.780336 )
beta : -10.00000 ( 2.86772e+09 2.86772e+09 )
Epeak [keV] : 97.8576 ( -24.3932 176.917 )
Norm@50keV : 6.48671E-02 ( -0.0648671 0.233741 )
------------------------------------------------------------
# Chi-Squared = 45.53 using 59 PHA bins.
# Reduced chi-squared = 0.8278 for 55 degrees of freedom
# Null hypothesis probability = 8.148674e-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] : 21.2244 (-3.12216 3.98226)
R^2/D10^2 : 7.44533E-02 (-0.0315885 0.050347)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 46.49 using 59 PHA bins.
# Reduced chi-squared = 0.8156 for 57 degrees of freedom
# Null hypothesis probability = 8.385863e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.307e-09 1.768e-09
25- 50 3.264e-08 7.805e-09
50-150 1.097e-07 2.768e-08
15-150 1.486e-07 2.875e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.998 ( )
Norm : 7.44415 (-7.44415 -7.44415)
------------------------------------------------------------
# Chi-Squared = 62.69 using 59 PHA bins.
# Reduced chi-squared = 1.100 for 57 degrees of freedom
# Null hypothesis probability = 2.816330e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.852e-08 1.018e-08
25- 50 3.563e-08 1.943e-08
50-150 7.815e-08 4.277e-08
15-150 1.323e-07 7.285e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.37612 (-4.24534 -4.24534)
R1^2/D10^2 : 3.52933 (-3.63209 104.104)
kT2 [keV] : 22.7812 (-3.84737 -22.739)
R2^2/D10^2 : 5.73256E-02 (-0.0574515 0.049258)
------------------------------------------------------------
# Chi-Squared = 44.71 using 59 PHA bins.
# Reduced chi-squared = 0.8129 for 55 degrees of freedom
# Null hypothesis probability = 8.378427e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.030e-08 4.833e-09
25- 50 3.149e-08 1.066e-08
50-150 1.134e-07 3.713e-08
15-150 1.552e-07 4.746e-08
Plot creation:
Sun Sep 9 19:01:11 EDT 2012