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 02:08:11 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger529686
======================================================================
Trigger: 00529686 Segment: 000
BAT Trigger Time: 365734463.936 [s; MET]
Trigger Stop: 365734464 [s; MET]
UTC: 2012-08-04T00:54:14.437420 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 233.929598045314 Dec: -28.7609483594276 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.68
Image Trigger?: NO
Rate S/N Ratio: 33.3466640010661 [ if not an image trigger ]
Image S/N Ratio: 10.68
Analysis Position: [ source = BAT ]
RA: 233.929598045314 Dec: -28.7609483594276 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 233.950428989018 Dec: -28.7682038279128 [deg; J2000]
{ 15h 35m 48.1s , -28d 46' 05.5" }
+/- 1.01181040655455 [arcmin] (estimated 90% radius based on SNR)
+/- 0.352910897598455 [arcmin] (formal 1-sigma fit error)
SNR: 29.9112037808232
Angular difference between the analysis and refined position is 1.178947 arcmin
Partial Coding Fraction: 0.2402344 [ including projection effects ]
Duration
T90: 0.807999968528748 +/- 0.0832345620352619
Measured from: -0.0799999833106995
to: 0.727999985218048 [s; relative to TRIGTIME]
T50: 0.351999938488007 +/- 0.0282842864203588
Measured from: 0.0879999995231628
to: 0.439999938011169 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.163999974727631
to: 0.836000025272369 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.163999974727631
to: 0.832000017166138 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.264145 0.446751 0.419487 0.106487
0.017573 0.020170 0.019068 0.012641 [error]
Peak 0.265216 0.447379 0.419467 0.105924
0.017589 0.020185 0.019088 0.012653 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.996 -0.164 0.832
T90 0.808 -0.080 0.728
T50 0.352 0.088 0.440
Peak 1.000 -0.164 0.836
====== 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 -1.339 -0.082 0.082 - - - 9.00e-02 -4.35e-03 4.35e-03 59.650 57
CPL -0.972 -0.322 0.346 156.107 -50.158 562.258 1.33e-01 -3.79e-02 5.73e-02 55.830 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 -1.343 -0.082 0.082 - - - 8.97e-02 -4.33e-03 4.33e-03 59.030 57
CPL -0.979 -0.322 0.346 156.158 -50.415 592.591 1.32e-01 -3.77e-02 5.71e-02 55.270 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 9.84e-08 2.00e-07 3.16e-07 1.11e-06 8.78e-07 1.72e-06 erg/cm2
90%_error_low -8.78e-09 -1.10e-08 -1.80e-08 -1.32e-07 -4.53e-08 -1.45e-07 erg/cm2
90%_error_hi 9.04e-09 1.10e-08 1.79e-08 1.43e-07 4.54e-08 1.53e-07 erg/cm2
Peak flux PL 3.18e+00 3.51e+00 2.77e+00 3.60e+00 1.08e+01 1.31e+01 ph/cm2/s
90%_error_low -2.88e-01 -1.99e-01 -1.54e-01 -4.00e-01 -5.51e-01 -6.38e-01 ph/cm2/s
90%_error_hi 2.97e-01 1.98e-01 1.53e-01 4.28e-01 5.52e-01 6.39e-01 ph/cm2/s
Fluence CPL 9.07e-08 2.06e-07 3.29e-07 6.99e-07 8.66e-07 1.32e-06 erg/cm2
90%_error_low -1.08e-08 -1.24e-08 -2.14e-08 -2.20e-07 -4.72e-08 -2.20e-07 erg/cm2
90%_error_hi 1.11e-08 1.26e-08 2.17e-08 3.47e-07 4.70e-08 3.41e-07 erg/cm2
Peak flux CPL 2.91e+00 3.60e+00 2.89e+00 2.55e+00 1.06e+01 1.20e+01 ph/cm2/s
90%_error_low -3.59e-01 -2.18e-01 -1.89e-01 -6.54e-01 -5.67e-01 -8.92e-01 ph/cm2/s
90%_error_hi 3.68e-01 2.20e-01 1.92e-01 9.35e-01 5.68e-01 1.08e+00 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 233.9504 -28.7682 0.0064 42.3520 -47.0202 1.3267173 29.911 TRIG_00529686 Foreground time interval of the image: -0.164 0.832 (delta_t = 0.996 [sec]) Background time interval of the image: -239.936 -0.164 (delta_t = 239.772 [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 -0.164 sec. to 0.832 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.339 ( -0.0817444 0.0818753 ) Norm@50keV : 8.99961E-02 ( -0.00434592 0.00434591 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 59.65 using 59 PHA bins. # Reduced chi-squared = 1.047 for 57 degrees of freedom # Null hypothesis probability = 3.795115e-01 Photon flux (15-150 keV) in 0.996 sec: 10.8179 ( -0.5523 0.5532 ) ph/cm2/s Energy fluence (15-150 keV) : 8.77747e-07 ( -4.52947e-08 4.53969e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.164 sec. to 0.832 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.971965 ( -0.321933 0.346363 ) Epeak [keV] : 156.107 ( -50.1575 562.258 ) Norm@50keV : 0.133118 ( -0.0378823 0.057304 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 55.83 using 59 PHA bins. # Reduced chi-squared = 0.9970 for 56 degrees of freedom # Null hypothesis probability = 4.812850e-01 Photon flux (15-150 keV) in 0.996 sec: 10.6583 ( -0.5685 0.5695 ) ph/cm2/s Energy fluence (15-150 keV) : 8.65625e-07 ( -4.71799e-08 4.70151e-08 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from -0.164 sec. to 0.836 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.34272 ( -0.0818164 0.08193 ) Norm@50keV : 8.97295E-02 ( -0.00433422 0.00433422 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 59.03 using 59 PHA bins. # Reduced chi-squared = 1.036 for 57 degrees of freedom # Null hypothesis probability = 4.010888e-01 Photon flux (15-150 keV) in 1 sec: 10.7939 ( -0.5511 0.552 ) ph/cm2/s Energy fluence (15-150 keV) : 8.7791e-07 ( -4.53223e-08 4.54478e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.164 sec. to 0.836 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.978508 ( -0.321917 0.346331 ) Epeak [keV] : 156.158 ( -50.4157 592.59 ) Norm@50keV : 0.132373 ( -0.0376984 0.0570547 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 55.27 using 59 PHA bins. # Reduced chi-squared = 0.9870 for 56 degrees of freedom # Null hypothesis probability = 5.023678e-01 Photon flux (15-150 keV) in 1 sec: 10.6356 ( -0.5674 0.5682 ) ph/cm2/s Energy fluence (15-150 keV) : 8.65785e-07 ( -4.7226e-08 4.70872e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 0.808 sec. Hardness ratio (energy fluence ratio) = 1.58121148797
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 2.9808942e-07 S(50-150 keV) = 5.796605e-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 = 6.214673431926222E-01, IMY = 6.669133243108158E-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 -0.164000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9874 -15.6293 0.4 41.0 -22.0 8.0807 26.5 0.8 Sco X-1 256.0050 -37.7935 16.6 22.1 -52.5 0.1442 0.7 3.2 4U 1700-377 256.4310 -36.4383 2.9 22.0 -48.8 0.7880 3.9 0.9 GX 349+2 262.8469 -24.6675 4.2 22.4 -14.0 0.5355 2.8 10.0 GX 1+4 264.7196 -44.4757 19.1 15.9 -74.6 0.1277 0.6 1.8 4U 1735-44 268.4544 -1.3680 9.6 39.3 20.7 0.3639 1.2 7.3 SW J1753.5-0127 270.2156 -25.0843 2.0 17.4 -0.6 1.0894 5.7 3.7 GX 5-1 270.5259 -25.7651 8.2 16.7 -1.4 0.2695 1.4 12.1 GRS 1758-258 274.0674 -14.1014 4.2 25.4 22.8 0.5580 2.7 5.3 GX 17+2 275.7100 -30.3302 3.3 10.3 1.0 0.6444 3.5 11.3 H1820-303 284.9768 -24.7642 7.9 13.2 49.5 0.2719 1.5 9.9 HT1900.1-2455 262.9226 -33.6936 57.0 17.6 -36.7 0.0405 0.2 9.1 GX 354-0 288.6251 -1.9638 3.0 36.2 53.6 1.5253 3.9 ------ UNKNOWN 331.5754 -49.8569 3.4 35.6 171.2 0.9718 3.4 ------ UNKNOWN 296.7919 -46.9074 2.5 13.0 -176.1 0.8384 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -0.164000 0.832000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 245.0479 -15.4815 5.9 41.0 -21.8 -0.0447 -2.0 10.3 Sco X-1 256.0820 -37.6775 6.0 22.0 -52.2 -0.0341 -1.9 11.0 4U 1700-377 256.2741 -36.4886 5.0 22.1 -49.0 -0.0407 -2.3 8.7 GX 349+2 263.1133 -24.6363 10.0 22.2 -13.5 -0.0161 -1.2 8.7 GX 1+4 264.8929 -44.4850 5.9 15.8 -74.7 0.0308 2.0 6.8 4U 1735-44 268.2932 -1.4845 8.2 39.2 20.4 0.0306 1.4 4.9 SW J1753.5-0127 270.2456 -25.2650 19.8 17.2 -0.9 0.0084 0.6 11.3 GX 5-1 270.1291 -25.7765 2700.0 16.9 -2.3 0.0000 0.0 9.6 GRS 1758-258 273.9360 -13.9007 5.9 25.6 22.6 0.0289 2.0 9.1 GX 17+2 276.1685 -30.3818 0.0 10.0 2.6 -0.0163 -1.2 12.6 H1820-303 284.9767 -25.0731 5.5 12.8 49.6 0.0294 2.1 9.7 HT1900.1-2455 263.0445 -33.9770 6.1 17.4 -37.5 0.0278 1.9 9.0 GX 354-0 233.9504 -28.7682 0.4 42.4 -47.0 1.3268 29.9 ------ UNKNOWN 239.6601 -80.8995 2.3 45.9 -125.2 0.4080 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 77.364590 933.764610 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 170.4383 -60.4294 4.8 52.3 -156.9 5.3854 2.4 12.2 Cen X-3 186.6775 -62.7928 0.6 45.6 -162.7 29.5356 18.3 1.5 GX 301-2 244.9792 -15.6325 0.1 16.6 29.3 59.1010 89.9 0.5 Sco X-1 255.9035 -37.9892 17.6 20.4 111.7 0.5117 0.7 9.6 4U 1700-377 256.2504 -36.4809 3.4 20.2 107.4 2.7988 3.4 9.6 GX 349+2 262.8800 -24.6123 5.6 26.1 76.9 2.0913 2.0 10.7 GX 1+4 264.7969 -44.5768 4.9 29.1 120.5 -2.4740 -2.4 8.0 4U 1735-44 268.4921 -1.6075 3.3 42.7 45.9 6.0156 3.5 11.9 SW J1753.5-0127 270.2272 -25.0821 3.4 32.4 81.4 4.5341 3.4 3.1 GX 5-1 270.3821 -25.7087 3.2 32.4 82.6 4.8865 3.6 4.8 GRS 1758-258 274.1242 -13.9508 228.9 40.0 66.1 -0.1297 -0.1 8.6 GX 17+2 275.8595 -30.5015 9.2 36.2 92.5 2.5452 1.3 8.8 H1820-303 262.9902 -33.8170 143.3 25.2 98.1 -0.0764 -0.1 1.1 GX 354-0 255.3930 -21.0571 3.0 20.9 62.4 3.2021 3.8 ------ UNKNOWN 252.8170 -40.2012 2.5 19.2 120.7 3.3042 4.6 ------ UNKNOWN 205.5682 -41.4223 3.3 26.3 -137.2 2.6643 3.5 ------ UNKNOWN