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: Wed Nov 19 23:03:05 EST 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger616061
======================================================================
Trigger: 00616061 Segment: 000
BAT Trigger Time: 435634075.456 [s; MET]
Trigger Stop: 435634083.648 [s; MET]
UTC: 2014-10-22T01:27:42.770160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 241.90130639089 Dec: -72.1292547480145 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.94
Image Trigger?: NO
Rate S/N Ratio: 14.0356688476182 [ if not an image trigger ]
Image S/N Ratio: 7.94
Analysis Position: [ source = BAT ]
RA: 241.90130639089 Dec: -72.1292547480145 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 241.929264829074 Dec: -72.1517468200457 [deg; J2000]
{ 16h 07m 43.0s , -72d 09' 06.3" }
+/- 2.21278245493836 [arcmin] (estimated 90% radius based on SNR)
+/- 1.05281805491185 [arcmin] (formal 1-sigma fit error)
SNR: 9.7802235342144
Angular difference between the analysis and refined position is 1.444261 arcmin
Partial Coding Fraction: 0.3984375 [ including projection effects ]
Duration
T90: 8.71599990129471 +/- 1.5595947757381
Measured from: -0.059999942779541
to: 8.65599995851517 [s; relative to TRIGTIME]
T50: 4.79199993610382 +/- 1.58170035497258
Measured from: 1.98400002717972
to: 6.77599996328354 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 6.19600003957748
to: 7.19600003957748 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.383999943733215
to: 9.17200005054474 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.111202 0.252007 0.225856 0.096321
0.038793 0.036355 0.031049 0.027722 [error]
Peak 0.021501 0.035695 0.035715 0.021678
0.012582 0.011783 0.010102 0.008803 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 9.556 -0.384 9.172
T90 8.716 -0.060 8.656
T50 4.792 1.984 6.776
Peak 1.000 6.196 7.196
====== 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: N/A)
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 -1.309 -0.260 0.271 - - - 5.04e-03 -7.68e-04 7.66e-04 73.180 57
CPL -0.812 -0.720 1.495 128.377 -65.594 -128.377 8.67e-03 -4.29e-03 3.30e-02 72.690 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 -1.109 -0.565 0.662 - - - 7.93e-03 -2.65e-03 2.42e-03 57.880 57
CPL -1.127 -0.546 0.979 9999.360 -9999.360 -9999.360 8.01e-03 -2.35e-03 1.87e-02 57.900 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 5.14e-08 1.06e-07 1.71e-07 6.20e-07 4.75e-07 9.49e-07 erg/cm2
90%_error_low -1.49e-08 -1.97e-08 -2.92e-08 -2.06e-07 -7.41e-08 -2.27e-07 erg/cm2
90%_error_hi 1.65e-08 1.93e-08 2.88e-08 2.71e-07 7.44e-08 2.78e-07 erg/cm2
Peak flux PL 2.25e-01 2.85e-01 2.65e-01 4.31e-01 9.21e-01 1.21e+00 ph/cm2/s
90%_error_low -1.39e-01 -1.28e-01 -7.89e-02 -2.35e-01 -3.07e-01 -3.44e-01 ph/cm2/s
90%_error_hi 1.86e-01 1.21e-01 7.70e-02 3.93e-01 3.16e-01 3.47e-01 ph/cm2/s
Fluence CPL 4.64e-08 1.11e-07 1.79e-07 3.28e-07 4.61e-07 6.62e-07 erg/cm2
90%_error_low -1.86e-08 -2.23e-08 -3.40e-08 -2.40e-07 -8.44e-08 -2.52e-07 erg/cm2
90%_error_hi 1.98e-08 2.35e-08 3.53e-08 5.23e-07 8.10e-08 3.80e-07 erg/cm2
Peak flux CPL 2.25e-01 2.89e-01 2.62e-01 4.41e-01 9.50e-01 1.20e+00 ph/cm2/s
90%_error_low N/A -1.33e-01 -7.69e-02 N/A -3.37e-01 -1.20e+00 ph/cm2/s
90%_error_hi N/A 1.14e-01 8.46e-02 N/A 2.87e-01 3.41e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 241.9293 -72.1517 0.0197 45.2416 -174.5511 0.6937619 9.780 TRIG_00616061 Foreground time interval of the image: -0.384 9.172 (delta_t = 9.556 [sec]) Background time interval of the image: -107.955 -0.384 (delta_t = 107.571 [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 -0.384 sec. to 9.172 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.30918 ( -0.260411 0.271062 ) Norm@50keV : 5.03804E-03 ( -0.000768186 0.000765856 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 73.18 using 59 PHA bins. # Reduced chi-squared = 1.284 for 57 degrees of freedom # Null hypothesis probability = 7.310356e-02 Photon flux (15-150 keV) in 9.556 sec: 0.602088 ( -0.09957 0.10073 ) ph/cm2/s Energy fluence (15-150 keV) : 4.7474e-07 ( -7.408e-08 7.43531e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.384 sec. to 9.172 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.81186 ( -0.714985 1.50025 ) Epeak [keV] : 128.377 ( -67.0625 -129.846 ) Norm@50keV : 8.66921E-03 ( -0.00420097 0.0331035 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 72.69 using 59 PHA bins. # Reduced chi-squared = 1.298 for 56 degrees of freedom # Null hypothesis probability = 6.624025e-02 Photon flux (15-150 keV) in 9.556 sec: 0.588762 ( -0.104923 0.105509 ) ph/cm2/s Energy fluence (15-150 keV) : 4.61356e-07 ( -8.44039e-08 8.10021e-08 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 6.196 sec. to 7.196 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.10899 ( -0.564664 0.662074 ) Norm@50keV : 7.93068E-03 ( -0.0026454 0.00242046 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 57.88 using 59 PHA bins. # Reduced chi-squared = 1.015 for 57 degrees of freedom # Null hypothesis probability = 4.424933e-01 Photon flux (15-150 keV) in 1 sec: 0.920711 ( -0.307379 0.316359 ) ph/cm2/s Energy fluence (15-150 keV) : 8.26894e-08 ( -2.39202e-08 2.39457e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 6.196 sec. to 7.196 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.1265 ( -0.547725 0.977587 ) Epeak [keV] : 9999.36 ( -9999.36 -9999.36 ) Norm@50keV : 8.01019E-03 ( -0.00233916 0.0186753 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 57.90 using 59 PHA bins. # Reduced chi-squared = 1.034 for 56 degrees of freedom # Null hypothesis probability = 4.051678e-01 Photon flux (15-150 keV) in 1 sec: 0.950181 ( -0.33713 0.286899 ) ph/cm2/s Energy fluence (15-150 keV) : 8.26533e-08 ( -2.39098e-08 2.35089e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = N/A sec. Hardness ratio (energy fluence ratio) = N/A
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = N/A S(50-150 keV) = N/A
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 = -1.003910591461702E+00, IMY = 9.576218893147721E-02
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: -107.955400 -0.384000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9792 -15.6449 0.3 23.6 -65.3 5.8993 33.8 0.3 Sco X-1 256.0006 -37.8034 5.0 12.3 -143.9 0.3340 2.3 2.5 4U 1700-377 256.4948 -36.4087 5.5 11.1 -140.0 0.2999 2.1 3.0 GX 349+2 263.0294 -24.8981 6.3 4.9 -41.1 0.2561 1.8 9.2 GX 1+4 264.9408 -44.4902 15.0 15.7 178.6 0.1102 0.8 8.8 4U 1735-44 268.4124 -1.4438 77.1 27.5 0.0 0.0240 0.1 2.7 SW J1753.5-0127 270.3446 -25.2052 5.7 5.2 41.5 0.2876 2.2 8.2 GX 5-1 270.3600 -25.7316 4.6 4.8 46.0 0.4316 3.2 3.2 GRS 1758-258 273.8561 -14.0631 7.1 16.4 22.4 0.2338 1.6 8.9 GX 17+2 276.0988 -30.3956 5.3 8.7 97.8 0.3293 2.2 9.2 H1820-303 284.9874 -24.8963 17.5 17.2 76.3 0.1066 0.7 3.0 HT1900.1-2455 288.7899 10.9727 2.9 45.4 27.2 1.4868 3.9 1.7 GRS 1915+105 263.1481 -34.0006 0.0 5.8 -158.7 0.2342 1.7 12.7 GX 354-0 240.4458 -51.5800 2.6 29.7 -151.8 0.7100 4.4 ------ UNKNOWN 188.4839 -73.7394 3.2 59.0 -166.2 3.3909 3.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -0.384000 9.172000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.8985 -15.7658 4.8 23.6 -65.7 -0.1082 -2.4 8.9 Sco X-1 255.8080 -37.8673 42.3 12.5 -143.6 -0.0107 -0.3 8.6 4U 1700-377 256.6470 -36.3034 0.0 11.0 -140.0 -0.0184 -0.5 12.5 GX 349+2 263.1623 -24.7924 4.4 4.9 -39.2 -0.0986 -2.6 8.8 GX 1+4 264.5407 -44.4419 4.7 15.6 179.6 0.0917 2.5 8.7 4U 1735-44 268.3055 -1.3180 3.5 27.6 -0.2 -0.1357 -3.3 8.9 SW J1753.5-0127 270.4513 -25.0463 6.9 5.4 41.0 -0.0642 -1.7 9.3 GX 5-1 270.3176 -25.5939 3.7 4.9 44.4 0.1164 3.1 9.0 GRS 1758-258 274.1532 -14.1450 4.8 16.5 23.5 0.0931 2.4 10.8 GX 17+2 276.0901 -30.3413 9.9 8.7 97.4 -0.0462 -1.2 8.7 H1820-303 285.0978 -24.9758 24.6 17.3 76.7 -0.0199 -0.5 4.7 HT1900.1-2455 288.8736 10.8005 522.2 45.3 27.4 0.0022 0.0 9.8 GRS 1915+105 262.8058 -33.8830 6.7 5.8 -155.6 -0.0649 -1.7 9.6 GX 354-0 241.9292 -72.1517 1.2 45.2 -174.6 0.6940 9.8 ------ UNKNOWN 225.7877 -43.3258 2.1 35.3 -130.0 0.3291 5.5 ------ UNKNOWN 233.7602 7.7168 1.8 48.1 -50.3 1.1136 6.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 118.644600 962.559900 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.4746 -40.6413 27.5 56.4 -169.9 1.8576 0.4 5.8 Vela X-1 170.4477 -60.8023 0.0 28.6 -155.5 1.4565 1.5 11.4 Cen X-3 186.6085 -62.8155 4.4 22.1 -144.8 2.5805 2.6 3.0 GX 301-2 255.8448 -37.9413 10.7 34.9 -31.5 1.5148 1.1 8.9 4U 1700-377 256.6903 -36.3970 8.3 36.5 -30.7 2.0405 1.4 12.4 GX 349+2 262.8071 -24.7769 5.7 48.8 -25.4 5.1895 2.0 11.2 GX 1+4 264.5122 -44.4599 8.5 29.7 -17.3 1.3494 1.4 9.9 4U 1735-44 270.1628 -25.0565 6.1 49.6 -16.6 -3.7813 -1.9 6.7 GX 5-1 270.2507 -25.6738 5.2 49.0 -16.4 4.5672 2.2 5.0 GRS 1758-258 275.7900 -30.4177 10.3 45.4 -8.5 2.2863 1.1 7.6 H1820-303 285.0416 -24.9199 179.1 52.8 0.2 0.1873 0.1 0.3 HT1900.1-2455 262.9616 -33.9185 37.2 39.7 -23.1 -0.3957 -0.3 5.2 GX 354-0 88.1945 -70.9081 3.1 36.0 143.4 5.8435 3.7 ------ UNKNOWN 148.0878 -73.3475 3.9 25.1 171.6 3.4949 2.9 ------ UNKNOWN 137.6229 -46.3090 3.1 50.5 -170.7 8.5903 3.7 ------ UNKNOWN 270.8875 -17.6827 2.8 57.0 -17.5 15.3278 4.1 ------ UNKNOWN 147.8938 -35.1869 4.2 58.0 -156.7 17.5644 2.8 ------ UNKNOWN