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 00:28:32 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger534402
======================================================================
Trigger: 00534402 Segment: 000
BAT Trigger Time: 370070175.936 [s; MET]
Trigger Stop: 370070202.816 [s; MET]
UTC: 2012-09-23T05:16:06.255520 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 303.795001229187 Dec: 6.23473100874495 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.88
Image Trigger?: NO
Rate S/N Ratio: 10.6770782520313 [ if not an image trigger ]
Image S/N Ratio: 8.88
Analysis Position: [ source = BAT ]
RA: 303.795001229187 Dec: 6.23473100874495 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 303.784471659038 Dec: 6.25568355596925 [deg; J2000]
{ 20h 15m 08.3s , +06d 15' 20.5" }
+/- 1.99640762233175 [arcmin] (estimated 90% radius based on SNR)
+/- 1.01712934720483 [arcmin] (formal 1-sigma fit error)
SNR: 11.3289829654631
Angular difference between the analysis and refined position is 1.405293 arcmin
Partial Coding Fraction: 0.796875 [ including projection effects ]
Duration
T90: 26.0759999752045 +/- 6.82356414870415
Measured from: -1.26399999856949
to: 24.811999976635 [s; relative to TRIGTIME]
T50: 14.727999985218 +/- 4.80197289713814
Measured from: 7.46799999475479
to: 22.1959999799728 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 24.6679999828339
to: 25.6679999828339 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.92799997329712
to: 26.6439999938011 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.235300 0.316039 0.129352 0.006494
0.034848 0.033905 0.028282 0.023494 [error]
Peak 0.017814 0.042273 0.014246 -0.003961
0.006540 0.006454 0.005226 0.004448 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 29.572 -2.928 26.644
T90 26.076 -1.264 24.812
T50 14.728 7.468 22.196
Peak 1.000 24.668 25.668
====== 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 -1.801 -0.235 0.226 - - - 1.43e-03 -2.25e-04 2.21e-04 50.830 57
CPL 0.302 -1.382 1.972 44.491 -6.965 13.816 2.38e-02 -2.38e-02 3.15e-01 43.350 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 -1.830 -0.405 0.372 - - - 4.50e-03 -1.23e-03 1.20e-03 59.930 57
CPL 1.013 -2.370 7.545 42.383 -8.832 24.079 2.09e-01 -2.09e-01 5.38e+03 55.380 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 7.16e-08 1.10e-07 1.26e-07 2.77e-07 3.89e-07 5.84e-07 erg/cm2
90%_error_low -1.36e-08 -1.48e-08 -2.59e-08 -9.84e-08 -6.14e-08 -1.29e-07 erg/cm2
90%_error_hi 1.41e-08 1.48e-08 2.64e-08 1.29e-07 6.29e-08 1.54e-07 erg/cm2
Peak flux PL 2.54e-01 2.11e-01 1.19e-01 9.86e-02 6.27e-01 6.82e-01 ph/cm2/s
90%_error_low -8.01e-02 -4.90e-02 -4.02e-02 -5.15e-02 -1.46e-01 -1.61e-01 ph/cm2/s
90%_error_hi 8.52e-02 4.90e-02 4.13e-02 7.66e-02 1.46e-01 1.62e-01 ph/cm2/s
Fluence CPL 5.99e-08 1.38e-07 1.08e-07 1.85e-08 3.22e-07 3.24e-07 erg/cm2
90%_error_low -1.66e-08 -2.30e-08 -3.70e-08 -1.57e-08 -5.70e-08 -5.89e-08 erg/cm2
90%_error_hi 1.66e-08 2.37e-08 3.58e-08 7.10e-08 6.85e-08 9.21e-08 erg/cm2
Peak flux CPL 1.88e-01 2.89e-01 9.59e-02 3.39e-03 5.76e-01 5.77e-01 ph/cm2/s
90%_error_low -1.88e-01 -8.30e-02 -9.59e-02 -3.39e-03 -1.58e-01 -1.58e-01 ph/cm2/s
90%_error_hi 1.06e-01 9.19e-02 6.33e-02 5.30e-02 1.54e-01 1.55e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 303.7845 6.2557 0.0170 16.9639 64.2521 0.7372550 11.329 TRIG_00534402 Foreground time interval of the image: -2.928 26.644 (delta_t = 29.572 [sec]) Background time interval of the image: -239.936 -2.928 (delta_t = 237.008 [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 -2.928 sec. to 26.644 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.80088 ( -0.235511 0.225863 ) Norm@50keV : 1.42934E-03 ( -0.000224775 0.000220845 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 50.83 using 59 PHA bins. # Reduced chi-squared = 0.8917 for 57 degrees of freedom # Null hypothesis probability = 7.045050e-01 Photon flux (15-150 keV) in 29.57 sec: 0.197037 ( -0.02673 0.026739 ) ph/cm2/s Energy fluence (15-150 keV) : 3.89162e-07 ( -6.14281e-08 6.28516e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -2.928 sec. to 26.644 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.301977 ( -1.40912 1.94477 ) Epeak [keV] : 44.4906 ( -6.85035 13.9307 ) Norm@50keV : 2.37842E-02 ( -0.0252959 0.313297 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 43.35 using 59 PHA bins. # Reduced chi-squared = 0.7741 for 56 degrees of freedom # Null hypothesis probability = 8.915898e-01 Photon flux (15-150 keV) in 29.57 sec: 0.183946 ( -0.027473 0.02774 ) ph/cm2/s Energy fluence (15-150 keV) : 3.21509e-07 ( -5.69808e-08 6.85152e-08 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 24.668 sec. to 25.668 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.82965 ( -0.404622 0.372584 ) Norm@50keV : 4.49935E-03 ( -0.00123374 0.00120097 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 59.93 using 59 PHA bins. # Reduced chi-squared = 1.051 for 57 degrees of freedom # Null hypothesis probability = 3.700707e-01 Photon flux (15-150 keV) in 1 sec: 0.627311 ( -0.146012 0.146091 ) ph/cm2/s Energy fluence (15-150 keV) : 4.13895e-08 ( -1.11078e-08 1.15512e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 24.668 sec. to 25.668 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 1.01272 ( -2.41034 7.50433 ) Epeak [keV] : 42.3833 ( -8.67873 24.2319 ) Norm@50keV : 0.209075 ( -0.279306 5377.22 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 55.38 using 59 PHA bins. # Reduced chi-squared = 0.9889 for 56 degrees of freedom # Null hypothesis probability = 4.982419e-01 Photon flux (15-150 keV) in 1 sec: 0.576134 ( -0.157908 0.154308 ) ph/cm2/s Energy fluence (15-150 keV) : 3.27175e-08 ( -9.47515e-09 1.27447e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 26.076 sec. Hardness ratio (energy fluence ratio) = 1.14812659029
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 1.8123969e-07 S(50-150 keV) = 2.0793105e-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 = 1.325140760758239E-01, IMY = -2.747554641792647E-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: -239.936000 -2.928000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.4979 35.3618 2.8 46.5 -43.9 2.4758 4.1 2.3 Her X-1 256.0226 -37.7462 14.4 48.2 -152.0 -0.4050 -0.8 6.1 4U 1700-377 256.2935 -36.4488 5.6 47.2 -151.0 0.9459 2.0 7.0 GX 349+2 263.1250 -24.6891 4.7 34.8 -144.3 0.6594 2.4 7.2 GX 1+4 264.5886 -44.5024 4.4 49.6 -164.3 1.3744 2.6 7.3 4U 1735-44 268.3355 -1.5134 4.6 19.5 -102.1 0.5250 2.5 4.1 SW J1753.5-0127 270.2118 -25.0174 4.2 30.7 -153.6 0.6436 2.7 5.4 GX 5-1 270.2386 -25.6295 4.4 31.2 -154.3 0.6079 2.6 7.6 GRS 1758-258 274.0703 -14.0821 2.7 20.0 -143.7 0.9080 4.2 4.6 GX 17+2 275.7777 -30.3739 3.3 33.0 -166.7 0.8248 3.5 7.6 H1820-303 285.1019 -24.7762 10.3 25.5 179.7 0.2463 1.1 9.4 HT1900.1-2455 288.8066 10.9537 1.1 10.4 -0.2 2.0776 10.5 0.7 GRS 1915+105 299.5460 35.1972 3.5 36.3 10.5 0.9766 3.3 2.2 Cyg X-1 307.9949 41.1358 0.0 44.5 15.9 0.8288 1.8 12.2 Cyg X-3 263.0349 -33.7709 3.6 41.5 -154.2 1.0530 3.2 4.5 GX 354-0 282.0183 -46.1384 3.2 47.0 179.6 1.4437 3.6 ------ UNKNOWN 287.7809 54.5159 2.5 53.9 -5.9 2.8008 4.7 ------ UNKNOWN 271.5017 -22.7087 2.8 28.2 -152.7 0.9527 4.2 ------ UNKNOWN 266.2939 -26.4101 0.4 34.0 -150.0 6.5958 27.0 ------ UNKNOWN 251.6966 -49.3046 3.7 58.7 -159.2 4.2287 3.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -2.928000 26.644000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.3593 35.4269 8.3 46.7 -44.0 -0.2430 -1.4 7.0 Her X-1 255.9866 -37.8442 430.8 48.3 -152.1 0.0039 0.0 0.0 4U 1700-377 256.5682 -36.5074 5.6 47.0 -151.2 0.2745 2.1 8.2 GX 349+2 263.1503 -24.7983 5.0 34.8 -144.4 -0.1830 -2.3 8.3 GX 1+4 264.7124 -44.5326 5.2 49.6 -164.4 -0.2820 -2.2 5.1 4U 1735-44 268.3791 -1.5134 149.3 19.5 -102.1 0.0052 0.1 3.7 SW J1753.5-0127 270.4401 -25.0133 19.4 30.6 -153.9 -0.0423 -0.6 9.4 GX 5-1 270.1405 -25.8592 0.0 31.4 -154.4 0.0714 1.0 11.2 GRS 1758-258 274.1427 -14.1567 6.8 20.0 -144.0 -0.0988 -1.7 10.7 GX 17+2 275.7776 -30.4118 7.9 33.0 -166.7 -0.1095 -1.5 8.1 H1820-303 285.1759 -25.0017 4.7 25.7 179.5 -0.1633 -2.4 9.0 HT1900.1-2455 288.9584 11.0295 5.8 10.5 0.6 -0.1171 -2.0 10.7 GRS 1915+105 299.5729 35.1877 5.9 36.3 10.5 -0.1597 -1.9 1.2 Cyg X-1 307.9414 40.8394 0.0 44.2 16.1 0.3331 2.7 10.2 Cyg X-3 262.8684 -33.6473 0.0 41.5 -153.9 -0.1022 -1.0 12.8 GX 354-0 303.7845 6.2557 1.0 17.0 64.3 0.7372 11.3 ------ UNKNOWN 294.7120 48.3987 2.2 48.2 0.3 0.6784 5.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 123.764600 962.151200 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 268.2209 -1.5623 0.0 36.3 -104.8 0.2824 0.2 11.0 SW J1753.5-0127 270.2846 -25.0366 3.2 45.2 -138.8 4.0004 3.6 2.6 GX 5-1 270.3777 -25.8544 4.2 45.6 -139.7 3.1474 2.7 7.8 GRS 1758-258 273.8617 -13.9765 5.0 35.9 -128.0 1.7333 2.3 9.1 GX 17+2 275.8564 -30.3367 3.6 45.3 -149.0 3.1744 3.2 4.0 H1820-303 284.9707 -25.0565 6.2 36.3 -154.0 1.0584 1.8 8.9 HT1900.1-2455 288.8147 10.9447 0.7 15.5 -74.9 8.3744 15.4 1.0 GRS 1915+105 299.5497 35.2501 2.9 29.3 -10.7 1.9429 4.0 3.5 Cyg X-1 308.0855 41.0000 2.8 35.0 2.1 2.5636 4.1 3.1 Cyg X-3 326.0670 38.3284 6.2 37.9 25.4 1.5903 1.9 4.9 Cyg X-2 327.2425 59.1355 3.0 55.9 10.7 12.1142 3.9 ------ UNKNOWN 310.3740 -47.2830 2.7 53.8 170.9 9.1986 4.3 ------ UNKNOWN 302.8926 41.3852 3.8 35.2 -4.7 1.8059 3.1 ------ UNKNOWN 287.0521 -49.2671 3.3 57.4 -170.7 9.5922 4.2 ------ UNKNOWN 286.7370 -49.1512 4.8 57.4 -170.4 7.4526 3.3 ------ UNKNOWN 285.7515 17.3955 3.5 20.8 -59.7 1.5391 3.3 ------ UNKNOWN 277.2184 57.7078 3.3 55.5 -20.5 5.9800 3.6 ------ UNKNOWN 266.7089 57.4373 3.0 58.8 -25.9 12.5107 3.9 ------ UNKNOWN 266.2805 -26.3902 1.1 48.8 -137.2 20.6701 10.3 ------ UNKNOWN