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 01:56:06 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger530267
======================================================================
Trigger: 00530267 Segment: 000
BAT Trigger Time: 366016187.264 [s; MET]
Trigger Stop: 366016188.288 [s; MET]
UTC: 2012-08-07T07:09:37.753700 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 241.210902101014 Dec: -47.4899662888597 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.03
Image Trigger?: NO
Rate S/N Ratio: 10.3923048454133 [ if not an image trigger ]
Image S/N Ratio: 7.03
Analysis Position: [ source = BAT ]
RA: 241.210902101014 Dec: -47.4899662888597 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 241.290202566376 Dec: -47.4601856405004 [deg; J2000]
{ 16h 05m 09.6s , -47d 27' 36.7" }
+/- 2.02585498317881 [arcmin] (estimated 90% radius based on SNR)
+/- 1.06402588874266 [arcmin] (formal 1-sigma fit error)
SNR: 11.0944670755058
Angular difference between the analysis and refined position is 3.679058 arcmin
Partial Coding Fraction: 0.890625 [ including projection effects ]
Duration
T90: 19.8839999437332 +/- 5.7625414379985
Measured from: 0.791999995708466
to: 20.6759999394417 [s; relative to TRIGTIME]
T50: 7.63199990987778 +/- 5.38687739219413
Measured from: 1.45200002193451
to: 9.08399993181229 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.65200001001358
to: 1.65200001001358 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.244000017642975
to: 24.1560000181198 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.219643 0.178756 0.134917 0.034403
0.031961 0.026887 0.022506 0.019498 [error]
Peak 0.038195 0.044978 0.019678 0.000510
0.006869 0.005872 0.004812 0.004018 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 24.400 -0.244 24.156
T90 19.884 0.792 20.676
T50 7.632 1.452 9.084
Peak 1.000 0.652 1.652
====== 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 -1.825 -0.312 0.299 - - - 1.30e-03 -2.31e-04 2.23e-04 44.370 57
CPL -1.837 -0.303 0.744 9999.350 -9999.340 -9999.350 1.29e-03 -2.21e-04 1.85e-03 44.380 56
=== 1-s peak 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 -2.027 -0.312 0.289 - - - 5.65e-03 -1.18e-03 1.15e-03 65.750 57
CPL -0.141 -1.474 2.237 40.165 -13.743 14.482 7.00e-02 -7.00e-02 1.47e+00 60.470 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 5.51e-08 8.31e-08 9.38e-08 2.01e-07 2.92e-07 4.33e-07 erg/cm2
90%_error_low -1.33e-08 -1.26e-08 -2.28e-08 -8.64e-08 -5.11e-08 -1.10e-07 erg/cm2
90%_error_hi 1.41e-08 1.25e-08 2.30e-08 1.24e-07 5.24e-08 1.40e-07 erg/cm2
Peak flux PL 3.87e-01 2.85e-01 1.40e-01 9.77e-02 8.58e-01 9.10e-01 ph/cm2/s
90%_error_low -8.99e-02 -4.81e-02 -3.69e-02 -4.15e-02 -1.46e-01 -1.53e-01 ph/cm2/s
90%_error_hi 9.47e-02 4.81e-02 3.80e-02 5.72e-02 1.46e-01 1.54e-01 ph/cm2/s
Fluence CPL 5.35e-08 7.13e-08 7.01e-08 2.03e-07 2.96e-07 4.28e-07 erg/cm2
90%_error_low -1.54e-08 -1.97e-08 -3.49e-08 -8.47e-08 -6.39e-08 -1.53e-07 erg/cm2
90%_error_hi 1.54e-08 1.95e-08 2.26e-08 1.23e-07 5.82e-08 1.09e-07 erg/cm2
Peak flux CPL 3.20e-01 3.44e-01 1.30e-01 1.30e-02 8.05e-01 8.06e-01 ph/cm2/s
90%_error_low -1.05e-01 -6.59e-02 -5.24e-02 -1.30e-02 -1.48e-01 -1.49e-01 ph/cm2/s
90%_error_hi 1.09e-01 7.02e-02 4.83e-02 4.79e-02 1.50e-01 1.53e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 241.2902 -47.4602 0.0173 19.5375 149.0987 0.4517674 11.094 TRIG_00530267 Foreground time interval of the image: -0.244 12.637 (delta_t = 12.881 [sec]) Background time interval of the image: -239.264 -0.244 (delta_t = 239.020 [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 -0.244 sec. to 24.156 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.82529 ( -0.31229 0.298745 ) Norm@50keV : 1.30289E-03 ( -0.000230868 0.000222634 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 44.37 using 59 PHA bins. # Reduced chi-squared = 0.7785 for 57 degrees of freedom # Null hypothesis probability = 8.887101e-01 Photon flux (15-150 keV) in 24.4 sec: 0.181336 ( -0.027796 0.02793 ) ph/cm2/s Energy fluence (15-150 keV) : 2.9249e-07 ( -5.11331e-08 5.2431e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.244 sec. to 24.156 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.83664 ( -0.306072 0.740713 ) Epeak [keV] : 9999.35 ( -9999.35 -9999.36 ) Norm@50keV : 1.29426E-03 ( -0.000228141 0.00184823 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 44.38 using 59 PHA bins. # Reduced chi-squared = 0.7925 for 56 degrees of freedom # Null hypothesis probability = 8.687406e-01 Photon flux (15-150 keV) in 24.4 sec: 0.152258 ( -0.043999 0.041123 ) ph/cm2/s Energy fluence (15-150 keV) : 2.9555e-07 ( -6.39173e-08 5.82355e-08 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 0.652 sec. to 1.652 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.02688 ( -0.311714 0.289388 ) Norm@50keV : 5.64993E-03 ( -0.00117672 0.00115127 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 65.75 using 59 PHA bins. # Reduced chi-squared = 1.153 for 57 degrees of freedom # Null hypothesis probability = 1.997191e-01 Photon flux (15-150 keV) in 1 sec: 0.858213 ( -0.14554 0.145737 ) ph/cm2/s Energy fluence (15-150 keV) : 5.21915e-08 ( -1.00345e-08 1.03358e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.652 sec. to 1.652 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.140907 ( -1.47534 2.23559 ) Epeak [keV] : 40.1650 ( -13.7404 14.4844 ) Norm@50keV : 6.99725E-02 ( -0.0701784 1.47088 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 60.47 using 59 PHA bins. # Reduced chi-squared = 1.080 for 56 degrees of freedom # Null hypothesis probability = 3.175968e-01 Photon flux (15-150 keV) in 1 sec: 0.804802 ( -0.14841 0.149938 ) ph/cm2/s Energy fluence (15-150 keV) : 4.51263e-08 ( -9.54515e-09 1.09656e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 19.884 sec. Hardness ratio (energy fluence ratio) = 1.12878173642
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 1.3826379e-07 S(50-150 keV) = 1.5422457e-07
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 = -3.044848519053462E-01, IMY = -1.822395329684092E-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: -239.264000 -0.244000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 170.4041 -60.7131 5.1 52.3 -162.3 1.6886 2.3 6.0 Cen X-3 186.5401 -62.7477 3.8 45.6 -167.7 1.7018 3.0 3.5 GX 301-2 244.9786 -15.6425 0.1 16.6 24.3 24.8259 89.9 0.1 Sco X-1 255.9837 -37.7575 3.0 20.4 105.9 1.2572 3.8 5.2 4U 1700-377 256.2633 -36.2747 0.0 20.2 101.6 -0.2951 -0.9 12.2 GX 349+2 262.9906 -24.7827 4.4 26.2 72.2 1.0439 2.6 2.4 GX 1+4 264.7386 -44.5859 4.8 29.1 115.4 1.0276 2.4 8.2 4U 1735-44 268.2660 -1.3435 3.3 42.7 40.4 2.4547 3.5 9.0 SW J1753.5-0127 270.4403 -25.0325 8.6 32.6 76.3 0.7105 1.3 8.9 GX 5-1 270.1465 -25.7921 3.9 32.2 77.5 1.5492 2.9 8.9 GRS 1758-258 274.0255 -13.9137 22.0 40.0 60.9 0.4388 0.5 7.5 GX 17+2 275.7655 -30.4921 9.5 36.2 87.4 -0.9084 -1.2 11.2 H1820-303 262.8080 -33.8637 8.0 25.1 93.1 0.5365 1.4 9.2 GX 354-0 240.7205 -82.6055 3.2 53.9 163.0 4.9898 3.6 ------ UNKNOWN 241.2443 10.0934 2.4 39.5 -4.5 2.0127 4.7 ------ UNKNOWN 195.2566 -57.9097 2.1 39.5 -164.4 2.1053 5.4 ------ UNKNOWN 228.7359 -1.9950 2.6 27.2 -27.3 1.3176 4.4 ------ UNKNOWN 179.7788 -52.2397 3.3 46.0 -152.2 2.0378 3.5 ------ UNKNOWN 206.8832 10.4552 3.9 47.1 -53.5 4.6801 3.0 ------ UNKNOWN 206.5912 10.0983 2.9 47.0 -54.1 6.4233 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -0.244000 12.636630 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 170.2256 -60.6819 20.4 52.4 -162.3 -0.0556 -0.6 4.4 Cen X-3 186.5315 -62.9504 5.3 45.7 -168.0 0.1445 2.2 11.3 GX 301-2 244.9929 -15.6580 1.4 16.6 24.3 -0.2997 -8.2 1.3 Sco X-1 256.0497 -37.8748 4.5 20.5 106.2 -0.1156 -2.6 3.5 4U 1700-377 256.4800 -36.2837 4.7 20.4 101.5 0.1051 2.4 8.6 GX 349+2 262.9629 -24.6058 7.1 26.2 71.8 -0.0878 -1.6 8.8 GX 1+4 264.7062 -44.4221 3.6 29.0 115.1 0.1767 3.2 2.3 4U 1735-44 268.5043 -1.6275 0.0 42.7 40.9 -0.2652 -2.6 13.3 SW J1753.5-0127 270.1857 -24.9762 10.6 32.4 76.1 -0.0740 -1.1 8.2 GX 5-1 270.1383 -25.7683 32.9 32.2 77.5 0.0242 0.3 9.0 GRS 1758-258 273.8631 -14.0882 8.3 39.7 61.0 -0.1723 -1.4 8.9 GX 17+2 276.1049 -30.4082 9.4 36.5 87.3 0.1322 1.2 9.6 H1820-303 263.1048 -33.9706 30.4 25.4 93.4 -0.0201 -0.4 10.0 GX 354-0 271.7030 -79.7487 2.3 53.3 156.3 1.0048 5.1 ------ UNKNOWN 258.7419 3.5677 2.1 40.2 24.6 0.3796 5.5 ------ UNKNOWN 241.2902 -47.4602 1.0 19.5 149.1 0.4534 11.1 ------ UNKNOWN 188.5147 -55.7589 2.0 41.9 -159.0 0.3190 5.7 ------ UNKNOWN 195.1624 -50.1753 2.6 36.2 -153.1 0.2164 4.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 55.636610 962.816000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 170.1944 -60.5053 34.9 41.4 -136.6 0.5019 0.3 7.9 Cen X-3 186.4969 -62.6834 2.8 33.5 -138.5 3.8340 4.1 6.8 GX 301-2 244.9797 -15.6394 0.2 32.0 5.6 52.5848 71.8 0.0 Sco X-1 256.0101 -37.8575 1.7 14.5 52.6 3.9555 6.8 1.4 4U 1700-377 256.3775 -36.4034 3.2 15.8 49.6 2.2531 3.5 3.0 GX 349+2 262.9370 -24.7339 6.0 28.5 43.5 1.5495 1.9 4.0 GX 1+4 264.7875 -44.4945 9.4 16.6 87.1 0.8754 1.2 3.3 4U 1735-44 270.3320 -25.0911 8.3 32.1 54.8 1.4364 1.4 2.7 GX 5-1 270.1792 -25.8545 4.6 31.4 55.5 2.5384 2.5 9.4 GRS 1758-258 273.9026 -13.9200 8.5 43.2 48.8 2.7919 1.4 9.2 GX 17+2 275.8466 -30.3453 6.0 31.6 68.4 1.9853 1.9 4.3 H1820-303 262.7710 -33.7248 0.0 21.3 56.3 1.2870 1.8 12.7 GX 354-0 255.4363 -35.9357 2.1 15.6 46.4 3.2993 5.4 ------ UNKNOWN 250.0787 -16.4078 3.2 31.9 15.0 2.5635 3.6 ------ UNKNOWN 249.3796 -14.1147 2.7 34.1 13.0 3.2407 4.2 ------ UNKNOWN 205.2842 -11.3873 3.5 47.0 -53.1 11.1407 3.4 ------ UNKNOWN 162.5846 -53.1592 3.8 47.9 -128.9 9.9976 3.1 ------ UNKNOWN