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 00:41:35 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger533613
======================================================================
Trigger: 00533613 Segment: 000
BAT Trigger Time: 369273367.744 [s; MET]
Trigger Stop: 369273368.768 [s; MET]
UTC: 2012-09-13T23:55:58.097160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 213.644443505442 Dec: -14.5347563916444 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.76
Image Trigger?: NO
Rate S/N Ratio: 13.7840487520902 [ if not an image trigger ]
Image S/N Ratio: 7.76
Analysis Position: [ source = BAT ]
RA: 213.644443505442 Dec: -14.5347563916444 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 213.659109013413 Dec: -14.5078334233632 [deg; J2000]
{ 14h 14m 38.2s , -14d 30' 28.2" }
+/- 0.614021418439663 [arcmin] (estimated 90% radius based on SNR)
+/- 0.177654555649107 [arcmin] (formal 1-sigma fit error)
SNR: 61.0538915062658
Angular difference between the analysis and refined position is 1.826211 arcmin
Partial Coding Fraction: 0.59375 [ including projection effects ]
Duration
T90: 122.587999939919 +/- 4.45621407847282
Measured from: -31.0680000185966
to: 91.5199999213219 [s; relative to TRIGTIME]
T50: 54.1799999475479 +/- 1.88285735130181
Measured from: 1.91999995708466
to: 56.0999999046326 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 38.4639999866486
to: 39.4639999866486 [s; relative to TRIGTIME]
Total Fluence
Measured from: -50.6040000319481
to: 111.856000006199 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 5.340722 6.777228 4.816118 1.268550
0.104762 0.102558 0.089841 0.078618 [error]
Peak 0.090817 0.139920 0.130400 0.052834
0.009143 0.009830 0.008958 0.007154 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 162.460 -50.604 111.856
T90 122.588 -31.068 91.520
T50 54.180 1.920 56.100
Peak 1.000 38.464 39.464
====== 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 -1.634 -0.043 0.043 - - - 7.33e-03 -1.56e-04 1.56e-04 43.570 57
CPL -1.541 -0.117 0.172 271.178 N/A N/A 8.08e-03 N/A N/A 42.660 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 -1.263 -0.134 0.134 - - - 2.70e-02 -1.96e-03 1.96e-03 53.470 57
CPL -1.265 -0.128 0.141 9999.360 -9999.360 -9999.360 2.71e-02 -1.91e-03 1.35e-02 53.490 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 1.72e-06 2.92e-06 3.76e-06 9.78e-06 1.11e-05 1.82e-05 erg/cm2
90%_error_low -7.67e-08 -7.37e-08 -1.01e-07 -6.01e-07 -2.43e-07 -6.47e-07 erg/cm2
90%_error_hi 7.83e-08 7.36e-08 1.00e-07 6.29e-07 2.43e-07 6.68e-07 erg/cm2
Peak flux PL 8.86e-01 1.03e+00 8.56e-01 1.20e+00 3.20e+00 3.97e+00 ph/cm2/s
90%_error_low -1.25e-01 -8.86e-02 -7.44e-02 -2.13e-01 -2.41e-01 -3.01e-01 ph/cm2/s
90%_error_hi 1.31e-01 8.75e-02 7.36e-02 2.41e-01 2.42e-01 3.04e-01 ph/cm2/s
Fluence CPL 1.68e-06 2.93e-06 3.79e-06 8.62e-06 1.10e-05 1.70e-05 erg/cm2
90%_error_low -1.03e-07 -7.70e-08 -1.10e-07 -1.70e-06 -2.81e-07 -1.73e-06 erg/cm2
90%_error_hi 9.78e-08 7.74e-08 1.11e-07 1.31e-06 2.75e-07 1.40e-06 erg/cm2
Peak flux CPL 8.93e-01 1.02e+00 8.52e-01 1.32e+00 3.21e+00 4.01e+00 ph/cm2/s
90%_error_low N/A -6.08e-02 -7.59e-02 -5.38e-01 -2.68e-01 -5.67e-01 ph/cm2/s
90%_error_hi N/A 9.49e-02 8.95e-02 4.03e-03 2.51e-01 2.54e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 213.6591 -14.5078 0.0031 26.9068 -59.9712 19.4526468 61.054 TRIG_00533613 Foreground time interval of the image: -50.604 111.856 (delta_t = 162.460 [sec]) Background time interval of the image: -239.744 -50.604 (delta_t = 189.140 [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 -50.604 sec. to 111.856 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.63367 ( -0.042834 0.0427961 ) Norm@50keV : 7.33018E-03 ( -0.000156066 0.00015606 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 43.57 using 59 PHA bins. # Reduced chi-squared = 0.7644 for 57 degrees of freedom # Null hypothesis probability = 9.047776e-01 Photon flux (15-150 keV) in 162.5 sec: 0.952086 ( -0.023769 0.02388 ) ph/cm2/s Energy fluence (15-150 keV) : 1.10985e-05 ( -2.43136e-07 2.43362e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -50.604 sec. to 111.856 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.54062 ( -0.116618 0.171682 ) Epeak [keV] : 271.178 ( ) Norm@50keV : 8.07799E-03 ( ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 42.66 using 59 PHA bins. # Reduced chi-squared = 0.7619 for 56 degrees of freedom # Null hypothesis probability = 9.053171e-01 Photon flux (15-150 keV) in 162.5 sec: 0.943837 ( -0.027624 0.026386 ) ph/cm2/s Energy fluence (15-150 keV) : 1.1019e-05 ( -2.81029e-07 2.74597e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 38.464 sec. to 39.464 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.26315 ( -0.133736 0.134221 ) Norm@50keV : 2.70086E-02 ( -0.00196186 0.00196159 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 53.47 using 59 PHA bins. # Reduced chi-squared = 0.9382 for 57 degrees of freedom # Null hypothesis probability = 6.081153e-01 Photon flux (15-150 keV) in 1 sec: 3.20136 ( -0.24114 0.24175 ) ph/cm2/s Energy fluence (15-150 keV) : 2.69408e-07 ( -2.18255e-08 2.19588e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 38.464 sec. to 39.464 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.26522 ( -0.130608 0.139332 ) Epeak [keV] : 9999.36 ( -9999.36 -9999.36 ) Norm@50keV : 2.70694E-02 ( -0.00194744 0.0134247 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 53.49 using 59 PHA bins. # Reduced chi-squared = 0.9553 for 56 degrees of freedom # Null hypothesis probability = 5.702891e-01 Photon flux (15-150 keV) in 1 sec: 3.20915 ( -0.26765 0.2512 ) ph/cm2/s Energy fluence (15-150 keV) : 2.6996e-07 ( -2.41045e-08 2.29944e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 122.588 sec. Hardness ratio (energy fluence ratio) = 1.28910956585
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 4.64507e-06 S(50-150 keV) = 6.453444e-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 = 2.539596755551063E-01, IMY = 4.393614653322437E-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: -239.744000 -50.604000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 170.5173 -60.4893 5.0 48.9 -153.3 1.1238 2.3 10.0 Cen X-3 186.6726 -62.7718 0.7 41.9 -158.7 5.6367 16.8 0.4 GX 301-2 244.9845 -15.6324 0.3 20.0 20.4 6.7362 35.6 0.6 Sco X-1 255.9840 -37.7009 8.5 17.7 100.7 -0.2809 -1.4 8.6 4U 1700-377 256.3816 -36.3701 2.0 17.9 96.3 1.2342 5.8 4.1 GX 349+2 263.1551 -24.8769 8.8 26.1 69.0 0.3269 1.3 11.2 GX 1+4 264.7072 -44.3456 4.6 25.5 114.8 0.6047 2.5 6.4 4U 1735-44 268.2353 -1.4407 2.7 44.7 42.1 2.3901 4.3 8.0 SW J1753.5-0127 270.2284 -25.1024 7.8 31.8 74.9 0.5045 1.5 3.3 GX 5-1 270.4043 -25.6033 12.6 31.8 75.9 0.3169 0.9 10.0 GRS 1758-258 274.0225 -14.0308 235.8 40.4 61.6 0.0332 0.0 1.0 GX 17+2 275.8870 -30.2481 7.9 34.8 86.9 0.5731 1.5 7.4 H1820-303 263.0758 -33.7299 6.2 23.5 89.3 0.4587 1.9 7.6 GX 354-0 272.7092 -26.4848 2.7 33.4 78.9 1.5706 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -50.604000 111.856000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 170.4058 -60.5028 81.9 49.0 -153.4 -0.0847 -0.1 7.7 Cen X-3 186.5468 -62.9443 6.2 42.0 -159.0 0.7412 1.9 10.9 GX 301-2 245.0446 -15.7187 2.8 19.9 20.7 -1.0049 -4.2 6.0 Sco X-1 255.9016 -37.7786 6.3 17.7 101.0 -0.5013 -1.8 5.6 4U 1700-377 256.3657 -36.3229 5.7 17.9 96.1 -0.5484 -2.0 6.9 GX 349+2 263.1843 -24.8330 5.9 26.1 69.0 -0.6569 -2.0 10.9 GX 1+4 264.7338 -44.3797 7.4 25.6 114.9 -0.5143 -1.6 4.2 4U 1735-44 268.4540 -1.5672 5.3 44.8 42.4 1.6558 2.2 8.6 SW J1753.5-0127 270.2435 -24.9533 13.8 31.9 74.7 -0.4067 -0.8 7.9 GX 5-1 270.3035 -25.6132 9.8 31.7 75.9 -0.5753 -1.2 7.8 GRS 1758-258 273.8844 -14.1600 0.0 40.2 61.6 0.4670 0.6 10.2 GX 17+2 275.9149 -30.4951 15.7 34.8 87.3 0.3878 0.7 7.7 H1820-303 263.0272 -33.6927 4.5 23.4 89.2 -0.8845 -2.5 8.7 GX 354-0 290.0339 -59.7032 2.8 44.3 134.2 3.2806 4.1 ------ UNKNOWN 242.2550 23.2135 3.0 57.0 -1.3 4.7001 3.9 ------ UNKNOWN 213.6591 -14.5078 0.2 26.9 -60.0 19.4524 61.1 ------ UNKNOWN 155.8841 -65.6634 2.3 55.4 -160.0 4.4936 5.1 ------ UNKNOWN 161.8895 -63.8938 3.0 53.0 -157.6 2.6950 3.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: