Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Mon Jan 13 02:50:14 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger529095
======================================================================
Trigger: 00529095 Segment: 000
BAT Trigger Time: 365252183.552 [s; MET]
Trigger Stop: 365252184.576 [s; MET]
UTC: 2012-07-29T10:56:14.073500 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 13.0556615694054 Dec: 49.9398263832054 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 19.36
Image Trigger?: NO
Rate S/N Ratio: 48.5386443980464 [ if not an image trigger ]
Image S/N Ratio: 19.36
Analysis Position: [ source = BAT ]
RA: 13.0556615694054 Dec: 49.9398263832054 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 13.0789252409463 Dec: 49.9376455295995 [deg; J2000]
{ 00h 52m 18.9s , +49d 56' 15.5" }
+/- 0.71999563988093 [arcmin] (estimated 90% radius based on SNR)
+/- 0.155655413236697 [arcmin] (formal 1-sigma fit error)
SNR: 48.6332011162089
Angular difference between the analysis and refined position is 0.907838 arcmin
Partial Coding Fraction: 0.765625 [ including projection effects ]
Duration
T90: 93.9279999136925 +/- 36.6355554286164
Measured from: -1.39199995994568
to: 92.5359999537468 [s; relative to TRIGTIME]
T50: 24.823999941349 +/- 4.44659694303347
Measured from: 1.32400000095367
to: 26.1479999423027 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0440000295639038
to: 1.0440000295639 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.09999996423721
to: 141.791999995708 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.301547 1.616063 1.073606 0.266030
0.058891 0.060395 0.052882 0.045003 [error]
Peak 0.098013 0.144406 0.091209 0.016672
0.007027 0.007602 0.006628 0.005026 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 144.892 -3.100 141.792
T90 93.928 -1.392 92.536
T50 24.824 1.324 26.148
Peak 1.000 0.044 1.044
====== Spectral Analysis Summary =====================================
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedo
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.613 -0.085 0.084 - - - 1.85e-03 -8.56e-05 8.53e-05 65.340 57
CPL -1.612 -0.084 0.282 9999.070 -9999.070 -9999.070 1.86e-03 -8.31e-05 7.02e-04 65.350 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: CPL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.663 -0.110 0.108 - - - 2.22e-02 -1.52e-03 1.51e-03 58.170 57
CPL -0.777 -0.489 0.552 64.985 -10.141 24.706 6.53e-02 -2.89e-02 6.16e-02 47.780 56
=== 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 PL 3.81e-07 6.54e-07 8.55e-07 2.27e-06 2.51e-06 4.16e-06 erg/cm2
90%_error_low -3.00e-08 -3.05e-08 -5.31e-08 -2.94e-07 -1.24e-07 -3.35e-07 erg/cm2
90%_error_hi 3.07e-08 3.05e-08 5.31e-08 3.24e-07 1.25e-07 3.59e-07 erg/cm2
Peak flux PL 1.07e+00 9.78e-01 6.17e-01 5.97e-01 2.91e+00 3.26e+00 ph/cm2/s
90%_error_low -1.06e-01 -6.34e-02 -5.42e-02 -9.76e-02 -1.86e-01 -2.08e-01 ph/cm2/s
90%_error_hi 1.09e-01 6.32e-02 5.41e-02 1.08e-01 1.86e-01 2.09e-01 ph/cm2/s
Fluence CPL 3.82e-07 6.53e-07 8.54e-07 2.29e-06 2.51e-06 4.15e-06 erg/cm2
90%_error_low -3.45e-08 -2.97e-08 -5.78e-08 -8.63e-07 -1.37e-07 -8.31e-07 erg/cm2
90%_error_hi 3.06e-08 3.54e-08 6.03e-08 1.58e-07 1.23e-07 1.90e-07 erg/cm2
Peak flux CPL 9.35e-01 1.07e+00 6.45e-01 2.35e-01 2.81e+00 2.88e+00 ph/cm2/s
90%_error_low -1.27e-01 -8.07e-02 -6.16e-02 -9.22e-02 -1.94e-01 -2.19e-01 ph/cm2/s
90%_error_hi 1.30e-01 8.26e-02 6.19e-02 1.48e-01 1.94e-01 2.37e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 13.0789 49.9376 0.0039 19.1274 -81.3989 2.7219382 48.633 TRIG_00529095 Foreground time interval of the image: -3.100 15.349 (delta_t = 18.449 [sec]) Background time interval of the image: -239.552 -3.100 (delta_t = 236.452 [sec])
Light Curves
Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
Full-time range; 1 s binning
Other quick-look light curves:
- 64 ms binning (zoomed)
- 16 ms binning (zoomed)
- 8 ms binning (zoomed)
- 2 ms binning (zoomed)
- SN=5 or 10 s binning (full-time range)
- Raw light curve
Spectra
- 64 ms binning (zoomed)
- 16 ms binning (zoomed)
- 8 ms binning (zoomed)
- 2 ms binning (zoomed)
- SN=5 or 10 s binning (full-time range)
- Raw light curve
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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 average DRM
Power-law model
Time interval is from -3.100 sec. to 141.792 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.61265 ( -0.0847006 0.0842248 ) Norm@50keV : 1.85319E-03 ( -8.56258e-05 8.53154e-05 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 65.34 using 59 PHA bins. # Reduced chi-squared = 1.146 for 57 degrees of freedom # Null hypothesis probability = 2.095182e-01 Photon flux (15-150 keV) in 144.9 sec: 0.239094 ( -0.011046 0.011075 ) ph/cm2/s Energy fluence (15-150 keV) : 2.50789e-06 ( -1.24478e-07 1.2516e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -3.100 sec. to 141.792 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.61165 ( -0.0845674 0.28127 ) Epeak [keV] : 9999.07 ( -9999.32 -9999.32 ) Norm@50keV : 1.85548E-03 ( -8.4885e-05 0.000700449 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 65.35 using 59 PHA bins. # Reduced chi-squared = 1.167 for 56 degrees of freedom # Null hypothesis probability = 1.838163e-01 Photon flux (15-150 keV) in 144.9 sec: 0.239312 ( -0.011828 0.011029 ) ph/cm2/s Energy fluence (15-150 keV) : 2.51055e-06 ( -1.36565e-07 1.22736e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 0.044 sec. to 1.044 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.66311 ( -0.110134 0.108068 ) Norm@50keV : 2.22214E-02 ( -0.00152265 0.00151174 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 58.17 using 59 PHA bins. # Reduced chi-squared = 1.021 for 57 degrees of freedom # Null hypothesis probability = 4.319495e-01 Photon flux (15-150 keV) in 1 sec: 2.91434 ( -0.18626 0.18637 ) ph/cm2/s Energy fluence (15-150 keV) : 2.06433e-07 ( -1.49589e-08 1.50855e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.044 sec. to 1.044 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.777151 ( -0.489117 0.551621 ) Epeak [keV] : 64.9848 ( -10.1407 24.7061 ) Norm@50keV : 6.53423E-02 ( -0.028882 0.0615652 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 47.78 using 59 PHA bins. # Reduced chi-squared = 0.8533 for 56 degrees of freedom # Null hypothesis probability = 7.745905e-01 Photon flux (15-150 keV) in 1 sec: 2.81154 ( -0.19404 0.19416 ) ph/cm2/s Energy fluence (15-150 keV) : 1.92615e-07 ( -1.64539e-08 1.67239e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 93.928 sec. Hardness ratio (energy fluence ratio) = 1.30803705459
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 1.0349787e-06 S(50-150 keV) = 1.4728992e-06
The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.
Mask shadow pattern
IMX = 5.186808599736119E-02, IMY = 3.429166619534886E-01
Spacecraft aspect plot
Bright source in the pre-burst/pre-slew/post-slew images
Pre-burst image of 15-350 keV band
Time interval of the image: -239.552000 -3.100000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 299.5581 35.3184 4.7 41.9 157.7 0.8739 2.5 7.2 Cyg X-1 308.1101 41.0055 1.2 33.9 163.9 2.1290 9.3 3.2 Cyg X-3 326.1736 38.2744 4.8 20.5 153.7 0.4053 2.4 2.8 Cyg X-2
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -3.100000 15.348600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 299.6067 35.0894 7.3 41.9 157.4 0.1413 1.6 6.8 Cyg X-1 308.1925 40.8132 10.5 33.9 163.5 -0.0741 -1.1 9.2 Cyg X-3 326.0681 38.2003 5.9 20.6 153.5 0.0916 1.9 8.8 Cyg X-2 343.6848 7.0131 2.3 31.8 70.8 0.4275 5.1 ------ UNKNOWN 327.8820 17.5950 2.6 29.4 107.7 0.3475 4.6 ------ UNKNOWN 13.0789 49.9376 0.2 19.1 -81.4 2.7220 48.6 ------ UNKNOWN 52.6789 15.6680 2.3 57.2 -30.2 1.3469 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 57.548600 645.048600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 308.2834 41.0147 7.7 44.8 136.3 1.8347 1.5 8.7 Cyg X-3 326.3226 38.2995 4.2 34.8 120.5 1.8910 2.7 7.2 Cyg X-2 7.4552 10.0040 2.4 40.2 40.3 3.0789 4.8 ------ UNKNOWN 332.6017 64.9938 2.8 25.8 172.7 1.2305 4.1 ------ UNKNOWN 245.0548 66.1649 3.2 57.3 -170.4 5.1957 3.6 ------ UNKNOWN 251.8679 73.1055 3.2 50.6 -167.0 2.8319 3.6 ------ UNKNOWN 58.6156 5.0415 3.1 58.9 -24.4 7.3934 3.7 ------ UNKNOWN 66.9628 21.4285 3.3 50.8 -44.4 5.6023 3.5 ------ UNKNOWN 126.4198 74.5419 2.4 48.0 -129.0 6.9489 4.8 ------ UNKNOWN