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 00:32:36 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger534394
======================================================================
Trigger: 00534394 Segment: 000
BAT Trigger Time: 370045838.336 [s; MET]
Trigger Stop: 370045842.432 [s; MET]
UTC: 2012-09-22T22:30:28.656560 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 234.755696507915 Dec: -20.1770777233188 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.36
Image Trigger?: NO
Rate S/N Ratio: 7.54983443527075 [ if not an image trigger ]
Image S/N Ratio: 7.36
Analysis Position: [ source = BAT ]
RA: 234.755696507915 Dec: -20.1770777233188 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 234.75907394634 Dec: -20.1819017240909 [deg; J2000]
{ 15h 39m 02.2s , -20d 10' 54.8" }
+/- 1.20957029224793 [arcmin] (estimated 90% radius based on SNR)
+/- 0.33454593546001 [arcmin] (formal 1-sigma fit error)
SNR: 23.1778919852115
Angular difference between the analysis and refined position is 0.346344 arcmin
Partial Coding Fraction: 0.3398438 [ including projection effects ]
Duration
T90: 168.223999977112 +/- 29.2386949482096
Measured from: -14.4240000247955
to: 153.799999952316 [s; relative to TRIGTIME]
T50: 94.7039999365807 +/- 4.32286242624889
Measured from: 7.61599999666214
to: 102.319999933243 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 99.2119999527931
to: 100.211999952793 [s; relative to TRIGTIME]
Total Fluence
Measured from: -22.5800000429153
to: 215.727999985218 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.521307 3.982178 2.018350 0.389878
0.125922 0.121078 0.103817 0.089877 [error]
Peak 0.081989 0.078987 0.042982 0.013267
0.007103 0.006851 0.005818 0.004670 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 238.308 -22.580 215.728
T90 168.224 -14.424 153.800
T50 94.704 7.616 102.320
Peak 1.000 99.212 100.212
====== 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 -2.000 -0.080 0.079 - - - 2.51e-03 -1.14e-04 1.13e-04 58.290 57
CPL -1.580 -0.328 0.358 46.095 -13.633 14.983 4.19e-03 -1.35e-03 2.26e-03 53.410 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 -1.951 -0.195 0.186 - - - 1.15e-02 -1.42e-03 1.38e-03 47.690 57
CPL -1.903 N/A N/A 87.543 N/A N/A 1.23e-02 N/A N/A 47.670 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 1.23e-06 1.66e-06 1.66e-06 3.01e-06 5.52e-06 7.56e-06 erg/cm2
90%_error_low -8.22e-08 -6.78e-08 -1.04e-07 -3.79e-07 -2.39e-07 -4.74e-07 erg/cm2
90%_error_hi 8.41e-08 6.77e-08 1.05e-07 4.15e-07 2.40e-07 4.99e-07 erg/cm2
Peak flux PL 7.32e-01 5.65e-01 2.92e-01 2.18e-01 1.69e+00 1.81e+00 ph/cm2/s
90%_error_low -1.06e-01 -5.45e-02 -4.75e-02 -6.22e-02 -1.64e-01 -1.76e-01 ph/cm2/s
90%_error_hi 1.09e-01 5.45e-02 4.80e-02 7.62e-02 1.64e-01 1.76e-01 ph/cm2/s
Fluence CPL 1.15e-06 1.73e-06 1.66e-06 1.58e-06 5.31e-06 6.12e-06 erg/cm2
90%_error_low -1.00e-07 -8.33e-08 -1.11e-07 -5.87e-07 -2.91e-07 -6.70e-07 erg/cm2
90%_error_hi 1.02e-07 8.45e-08 1.11e-07 9.99e-07 2.91e-07 1.04e-06 erg/cm2
Peak flux CPL 7.28e-01 5.68e-01 2.92e-01 2.02e-01 1.68e+00 1.79e+00 ph/cm2/s
90%_error_low -1.18e-01 -5.67e-02 -4.17e-02 -1.26e-01 -1.71e-01 -2.28e-01 ph/cm2/s
90%_error_hi 1.16e-01 6.89e-02 4.86e-02 7.85e-02 1.67e-01 1.86e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 234.7591 -20.1819 0.0083 44.3644 -30.5427 4.0994776 23.178 TRIG_00534394 Foreground time interval of the image: -22.580 35.565 (delta_t = 58.145 [sec]) Background time interval of the image: -239.336 -22.580 (delta_t = 216.756 [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 -22.580 sec. to 215.728 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.99952 ( -0.0801652 0.078984 ) Norm@50keV : 2.51367E-03 ( -0.000113995 0.000113216 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 58.29 using 59 PHA bins. # Reduced chi-squared = 1.023 for 57 degrees of freedom # Null hypothesis probability = 4.277966e-01 Photon flux (15-150 keV) in 238.3 sec: 0.376996 ( -0.016259 0.016314 ) ph/cm2/s Energy fluence (15-150 keV) : 5.52477e-06 ( -2.39418e-07 2.40426e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -22.580 sec. to 215.728 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.57979 ( -0.327656 0.357874 ) Epeak [keV] : 46.0949 ( -13.6324 14.9828 ) Norm@50keV : 4.19107E-03 ( -0.00135209 0.00226045 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 53.41 using 59 PHA bins. # Reduced chi-squared = 0.9537 for 56 degrees of freedom # Null hypothesis probability = 5.735962e-01 Photon flux (15-150 keV) in 238.3 sec: 0.366262 ( -0.018131 0.018193 ) ph/cm2/s Energy fluence (15-150 keV) : 5.30804e-06 ( -2.90576e-07 2.90881e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 99.212 sec. to 100.212 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.95087 ( -0.19526 0.18624 ) Norm@50keV : 1.15087E-02 ( -0.0014167 0.00138167 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 47.69 using 59 PHA bins. # Reduced chi-squared = 0.8366 for 57 degrees of freedom # Null hypothesis probability = 8.055118e-01 Photon flux (15-150 keV) in 1 sec: 1.68856 ( -0.16398 0.16408 ) ph/cm2/s Energy fluence (15-150 keV) : 1.05933e-07 ( -1.23687e-08 1.26111e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 99.212 sec. to 100.212 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.90266 ( ) Epeak [keV] : 87.5429 ( ) Norm@50keV : 1.22538E-02 ( ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 47.67 using 59 PHA bins. # Reduced chi-squared = 0.8513 for 56 degrees of freedom # Null hypothesis probability = 7.781653e-01 Photon flux (15-150 keV) in 1 sec: 1.68488 ( -0.17085 0.16699 ) ph/cm2/s Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 168.224 sec. Hardness ratio (energy fluence ratio) = 1.00036804193
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 2.888074e-06 S(50-150 keV) = 2.6367375e-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 = 8.423515396214318E-01, IMY = 4.970291649291343E-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: -239.336000 -22.580000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.5358 -40.5402 15.2 48.7 -164.1 0.3392 0.8 0.9 Vela X-1 170.5763 -60.7672 16.6 19.4 -169.0 0.1373 0.7 11.5 Cen X-3 186.6539 -62.7759 1.7 11.5 -170.4 1.3695 6.9 0.3 GX 301-2 244.9804 -15.6402 1.0 51.7 -19.9 5.4881 11.3 0.1 Sco X-1 255.9937 -37.8488 2.3 36.2 7.4 1.1995 5.0 0.4 4U 1700-377 256.5639 -36.4710 31.6 37.6 6.7 0.0935 0.4 6.8 GX 349+2 263.0162 -24.6939 7.3 50.5 4.7 0.7259 1.6 3.1 GX 1+4 264.7575 -44.3801 4.7 35.1 23.3 0.6931 2.5 4.2 4U 1735-44 270.2488 -25.0574 3.9 53.4 12.2 2.3980 3.0 2.3 GX 5-1 270.2548 -25.8229 7.6 52.8 12.7 -1.1991 -1.5 5.4 GRS 1758-258 275.8022 -30.4816 0.0 51.5 21.1 1.7236 2.2 9.4 H1820-303 262.9816 -33.9265 4.3 42.6 11.3 0.9233 2.7 5.5 GX 354-0 103.8828 -71.4042 2.3 38.1 146.7 1.8058 5.0 ------ UNKNOWN 266.2964 -26.4045 1.1 50.5 9.2 5.6606 10.4 ------ UNKNOWN 218.5754 -14.6424 3.4 47.1 -53.2 3.2361 3.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -22.580000 35.564610 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.5587 -40.5497 8.8 48.7 -164.1 -0.2666 -1.3 1.4 Vela X-1 170.3433 -60.6115 1093.5 19.5 -168.7 -0.0009 -0.0 1.1 Cen X-3 186.6515 -62.7750 3.8 11.5 -170.4 -0.2755 -3.1 0.3 GX 301-2 244.8060 -15.6474 6.1 51.6 -20.1 0.4612 1.9 10.0 Sco X-1 256.1893 -37.7705 9.5 36.3 7.5 0.1529 1.2 10.6 4U 1700-377 256.3738 -36.3795 51.0 37.5 6.4 -0.0301 -0.2 4.0 GX 349+2 263.0090 -24.7456 80.7 50.4 4.8 0.0352 0.1 0.0 GX 1+4 264.9596 -44.3560 0.0 35.2 23.4 -0.2346 -1.7 10.9 4U 1735-44 270.3371 -25.1608 6.4 53.4 12.3 -0.7253 -1.8 5.7 GX 5-1 270.3450 -25.7273 4.5 52.9 12.7 1.0141 2.6 2.5 GRS 1758-258 276.0042 -30.5175 5.2 51.5 21.3 -0.8649 -2.2 9.9 H1820-303 262.9072 -33.6860 6.3 42.7 11.0 0.3203 1.8 9.8 GX 354-0 252.0617 -25.6978 2.2 45.0 -6.5 0.8165 5.1 ------ UNKNOWN 252.7851 -17.4521 2.7 52.7 -10.3 1.0982 4.3 ------ UNKNOWN 234.7591 -20.1819 0.5 44.4 -30.5 4.0997 23.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 105.164590 962.748300 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 186.6400 -62.8297 12.4 53.6 -168.6 2.7366 0.9 3.6 GX 301-2 244.9742 -15.6341 0.2 10.7 53.2 34.7007 47.9 0.5 Sco X-1 256.0257 -37.9845 4.7 25.6 125.1 2.2050 2.5 8.6 4U 1700-377 256.3540 -36.5625 6.0 25.0 122.1 1.6342 1.9 9.2 GX 349+2 262.9502 -24.7396 5.5 26.4 91.7 2.3656 2.1 3.2 GX 1+4 264.5521 -44.3351 0.0 34.6 127.7 -1.0211 -0.7 10.7 4U 1735-44 268.4553 -1.6093 6.9 37.8 51.4 2.6870 1.7 10.8 SW J1753.5-0127 270.1802 -25.1381 3.7 33.0 91.9 4.8152 3.1 6.7 GX 5-1 270.2404 -25.7118 5.0 33.1 92.9 3.5714 2.3 3.8 GRS 1758-258 273.9675 -13.9557 85.0 37.9 73.4 0.3134 0.1 5.3 GX 17+2 275.9500 -30.3581 182.1 38.4 100.3 0.1438 0.1 1.4 H1820-303 262.9827 -33.7869 4.4 28.5 110.9 3.0762 2.7 2.9 GX 354-0 266.3024 -26.3978 0.6 29.6 94.7 23.8812 18.7 ------ UNKNOWN 263.5710 9.3560 3.1 40.9 33.0 5.1955 3.7 ------ UNKNOWN 248.4798 -47.3792 2.2 29.4 147.4 4.8210 5.2 ------ UNKNOWN 233.5683 -67.8550 2.5 47.7 167.1 8.2119 4.6 ------ UNKNOWN 243.2489 -15.8930 3.1 9.1 50.1 2.5727 3.8 ------ UNKNOWN 242.0683 21.4776 3.6 42.2 -3.4 3.9280 3.2 ------ UNKNOWN