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 Oct 24 17:12:10 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger715084
======================================================================
Trigger: 00715084 Segment: 000
BAT Trigger Time: 497278725.632 [s; MET]
Trigger Stop: 497278726.656 [s; MET]
UTC: 2016-10-04T12:58:28.674640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 263.170818888793 Dec: -0.928319619942499 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.19
Image Trigger?: NO
Rate S/N Ratio: 13.490737563232 [ if not an image trigger ]
Image S/N Ratio: 8.19
Analysis Position: [ source = BAT ]
RA: 263.170818888793 Dec: -0.928319619942499 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 263.132931038963 Dec: -0.933942111445677 [deg; J2000]
{ 17h 32m 31.9s , -00d 56' 02.2" }
+/- 2.07686744203869 [arcmin] (estimated 90% radius based on SNR)
+/- 0.923795624059648 [arcmin] (formal 1-sigma fit error)
SNR: 10.707233366062
Angular difference between the analysis and refined position is 2.297869 arcmin
Partial Coding Fraction: 0.921875 [ including projection effects ]
Duration
T90: 1.3199999332428 +/- 0.299786554107303
Measured from: -0.0640000104904175
to: 1.25599992275238 [s; relative to TRIGTIME]
T50: 0.659999966621399 +/- 0.187018713468652
Measured from: 0.195999979972839
to: 0.855999946594238 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.059999942779541
to: 1.05999994277954 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.108000040054321
to: 1.31199997663498 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.040622 0.060924 0.047705 0.012137
0.009166 0.008679 0.007366 0.005865 [error]
Peak 0.037159 0.045418 0.035016 0.011649
0.007809 0.007294 0.006280 0.004940 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 1.420 -0.108 1.312
T90 1.320 -0.064 1.256
T50 0.660 0.196 0.856
Peak 1.000 0.060 1.060
====== 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 -1.380 -0.294 0.301 - - - 7.45e-03 -1.15e-03 1.15e-03 73.360 57
CPL -1.391 -1.092 0.271 9999.360 N/A N/A 7.47e-03 N/A N/A 73.380 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 -1.496 -0.343 0.343 - - - 8.07e-03 -1.41e-03 1.40e-03 62.460 57
CPL -1.502 -0.338 0.535 9999.340 -9999.340 -9999.340 8.08e-03 -1.40e-03 5.13e-03 62.470 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 1.21e-08 2.39e-08 3.67e-08 1.23e-07 1.03e-07 1.96e-07 erg/cm2
90%_error_low -3.53e-09 -4.28e-09 -7.22e-09 -4.71e-08 -1.74e-08 -5.26e-08 erg/cm2
90%_error_hi 3.83e-09 4.14e-09 7.06e-09 6.53e-08 1.75e-08 6.76e-08 erg/cm2
Peak flux PL 3.31e-01 3.34e-01 2.37e-01 2.67e-01 1.01e+00 1.17e+00 ph/cm2/s
90%_error_low -1.05e-01 -6.51e-02 -5.41e-02 -1.11e-01 -1.79e-01 -2.00e-01 ph/cm2/s
90%_error_hi 1.14e-01 6.27e-02 5.22e-02 1.55e-01 1.79e-01 2.02e-01 ph/cm2/s
Fluence CPL 9.72e-09 1.28e-08 1.28e-08 2.91e-08 4.34e-08 6.46e-08 erg/cm2
90%_error_low -4.81e-09 -5.19e-09 N/A -1.35e-08 N/A N/A erg/cm2
90%_error_hi 4.34e-09 3.69e-09 N/A 1.06e-08 N/A N/A erg/cm2
Peak flux CPL 3.31e-01 3.33e-01 2.33e-01 3.00e-01 1.01e+00 1.17e+00 ph/cm2/s
90%_error_low -1.05e-01 -6.68e-02 N/A N/A -1.93e-01 -2.06e-01 ph/cm2/s
90%_error_hi 1.14e-01 6.56e-02 N/A N/A 1.81e-01 1.99e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 263.1329 -0.9339 0.0180 26.4650 -6.8052 0.1648449 10.707 TRIG_00715084 Foreground time interval of the image: -0.108 1.312 (delta_t = 1.420 [sec]) Background time interval of the image: -239.632 -0.108 (delta_t = 239.524 [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 -0.108 sec. to 1.312 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.37996 ( -0.294013 0.30072 ) Norm@50keV : 7.45080E-03 ( -0.00115196 0.00115088 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 73.36 using 59 PHA bins. # Reduced chi-squared = 1.287 for 57 degrees of freedom # Null hypothesis probability = 7.116717e-02 Photon flux (15-150 keV) in 1.42 sec: 0.903340 ( -0.147315 0.14791 ) ph/cm2/s Energy fluence (15-150 keV) : 1.02674e-07 ( -1.73855e-08 1.75414e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.108 sec. to 1.312 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.37731 ( -0.105707 1.25753 ) Epeak [keV] : 129.270 ( ) Norm@50keV : 2.16914E-03 ( ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 71.66 using 59 PHA bins. # Reduced chi-squared = 1.280 for 56 degrees of freedom # Null hypothesis probability = 7.740103e-02 Photon flux (15-150 keV) in 1.42 sec: 0.906435 ( -0.153185 0.147405 ) ph/cm2/s Energy fluence (15-150 keV) : 4.34279e-08 ( 0 0 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 0.060 sec. to 1.060 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.49611 ( -0.343329 0.343048 ) Norm@50keV : 8.06621E-03 ( -0.00141249 0.0013951 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 62.46 using 59 PHA bins. # Reduced chi-squared = 1.096 for 57 degrees of freedom # Null hypothesis probability = 2.885541e-01 Photon flux (15-150 keV) in 1 sec: 1.00595 ( -0.178724 0.17914 ) ph/cm2/s Energy fluence (15-150 keV) : 7.65791e-08 ( -1.46977e-08 1.48743e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.060 sec. to 1.060 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.50178 ( -0.338176 0.534942 ) Epeak [keV] : 9999.34 ( -9999.36 -9999.36 ) Norm@50keV : 8.08025E-03 ( -0.00140146 0.00513177 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 62.47 using 59 PHA bins. # Reduced chi-squared = 1.116 for 56 degrees of freedom # Null hypothesis probability = 2.572095e-01 Photon flux (15-150 keV) in 1 sec: 1.01211 ( -0.192969 0.18075 ) ph/cm2/s Energy fluence (15-150 keV) : 4.08075e-08 ( 0 0 ) 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 = 4.943111119888717E-01, IMY = 5.898879147712979E-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: -239.632000 -0.108000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9815 -15.6519 0.4 25.9 -61.0 7.9477 27.7 0.7 Sco X-1 255.9840 -37.8460 0.6 16.5 -127.5 4.9251 18.6 0.2 4U 1700-377 256.4960 -36.4007 4.3 15.3 -124.2 0.6992 2.7 3.2 GX 349+2 263.0411 -24.8098 5.3 6.7 -67.7 0.5086 2.2 4.2 GX 1+4 264.7514 -44.3119 12.6 18.4 -158.0 -0.2166 -0.9 8.3 4U 1735-44 268.3111 -1.3095 10.6 25.3 4.8 -0.2723 -1.1 9.2 SW J1753.5-0127 270.2400 -25.0515 2.0 1.4 8.4 1.2766 5.7 2.9 GX 5-1 270.3891 -25.7602 12.6 0.7 17.9 -0.2113 -0.9 4.8 GRS 1758-258 273.9446 -14.0890 4.3 12.9 25.6 0.6217 2.7 4.8 GX 17+2 275.8382 -30.2302 2.7 6.2 138.0 0.9976 4.3 9.4 H1820-303 285.0226 -24.9190 50.7 13.4 95.9 0.0558 0.2 0.7 HT1900.1-2455 288.7756 10.9583 5.2 41.5 37.4 1.2804 2.2 1.5 GRS 1915+105 263.0482 -33.8784 13.9 9.7 -132.2 0.1953 0.8 3.9 GX 354-0 309.5729 -24.7786 3.9 35.3 105.5 2.0696 3.0 ------ UNKNOWN 299.6309 -53.5374 2.7 34.7 158.6 1.7306 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -0.108000 1.312000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 245.1380 -15.4939 0.0 25.8 -60.5 0.0315 1.8 12.7 Sco X-1 256.1643 -37.6965 0.0 16.3 -127.4 -0.0161 -1.1 12.2 4U 1700-377 256.2719 -36.5718 5.2 15.6 -124.3 -0.0336 -2.2 11.9 GX 349+2 263.1621 -24.6652 9.7 6.7 -66.3 0.0187 1.2 9.6 GX 1+4 264.9593 -44.5275 6.1 18.5 -158.7 0.0273 1.9 10.4 4U 1735-44 268.2254 -1.4234 8.5 25.1 4.6 -0.0223 -1.3 8.7 SW J1753.5-0127 270.2425 -24.9525 10.0 1.5 8.5 -0.0169 -1.2 7.9 GX 5-1 270.3859 -25.5786 10.8 0.9 16.0 0.0156 1.1 10.8 GRS 1758-258 274.0811 -13.9549 9.1 13.0 26.0 0.0194 1.3 6.6 GX 17+2 276.1302 -30.4815 0.0 6.5 138.5 0.0128 0.8 12.6 H1820-303 284.8767 -24.9608 6.2 13.2 96.0 0.0292 1.8 9.0 HT1900.1-2455 288.7205 11.0591 5.0 41.6 37.3 -0.0864 -2.3 8.2 GRS 1915+105 263.1337 -33.8179 6.3 9.6 -132.3 -0.0285 -1.8 7.3 GX 354-0 263.1339 -0.9350 1.1 26.5 -6.8 0.1646 10.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 64.868620 962.393500 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9847 -15.6354 0.3 23.2 -125.5 31.6210 34.9 0.4 Sco X-1 254.6051 35.3460 12.0 37.1 -6.9 -0.8916 -1.0 7.2 Her X-1 255.9989 -37.8533 0.6 37.5 -165.9 18.3215 18.7 0.8 4U 1700-377 256.4714 -36.3187 3.9 35.9 -166.0 2.4999 2.9 6.5 GX 349+2 263.1003 -24.7124 4.4 23.8 -175.1 2.0461 2.6 5.4 GX 1+4 264.8253 -44.4224 6.3 43.5 -176.9 2.4053 1.8 3.9 4U 1735-44 268.2672 -1.5394 7.3 5.1 101.7 -1.1027 -1.6 8.0 SW J1753.5-0127 270.3146 -25.1016 1.7 25.1 169.4 5.3261 6.8 2.1 GX 5-1 270.1686 -25.9096 0.0 25.9 170.2 0.5926 0.8 12.3 GRS 1758-258 274.0107 -14.0855 2.8 17.0 146.1 3.1560 4.2 3.0 GX 17+2 275.9301 -30.3665 33.6 31.8 163.6 0.3445 0.3 0.3 H1820-303 285.1040 -25.0525 4.7 32.1 145.2 -2.8132 -2.4 8.7 HT1900.1-2455 288.7627 10.9936 2.0 28.1 69.0 7.0787 5.7 3.6 GRS 1915+105 263.0322 -33.8199 6.1 32.9 -175.0 1.7091 1.9 2.3 GX 354-0 258.2864 21.7636 3.4 23.2 -6.8 2.5656 3.4 ------ UNKNOWN 255.7856 37.9129 2.7 39.4 -4.4 4.4011 4.3 ------ UNKNOWN 250.4817 -3.9437 3.6 13.0 -98.8 2.4237 3.2 ------ UNKNOWN 237.2782 49.3450 3.5 55.0 -15.6 8.4006 3.3 ------ UNKNOWN 233.3310 -52.5038 2.6 57.3 -154.1 19.2646 4.4 ------ UNKNOWN 223.1332 -16.7944 3.0 42.5 -109.5 16.2361 3.8 ------ UNKNOWN