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: Sat Jan 11 23:58:33 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger565651
======================================================================
Trigger: 00565651 Segment: 000
BAT Trigger Time: 397563954.176 [s; MET]
Trigger Stop: 397563955.2 [s; MET]
UTC: 2013-08-07T10:25:43.293700 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 269.801145760052 Dec: -27.6125375193907 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.29
Image Trigger?: NO
Rate S/N Ratio: 12.9614813968157 [ if not an image trigger ]
Image S/N Ratio: 9.29
Analysis Position: [ source = BAT ]
RA: 269.801145760052 Dec: -27.6125375193907 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 269.813247579641 Dec: -27.6161169019761 [deg; J2000]
{ 17h 59m 15.2s , -27d 36' 58.0" }
+/- 1.4202806312892 [arcmin] (estimated 90% radius based on SNR)
+/- 0.504748951749897 [arcmin] (formal 1-sigma fit error)
SNR: 18.4264215336693
Angular difference between the analysis and refined position is 0.678293 arcmin
Partial Coding Fraction: 0.9296875 [ including projection effects ]
Duration
T90: 293.039999902248 +/- 26.6104443523493
Measured from: -2.51999998092651
to: 290.519999921322 [s; relative to TRIGTIME]
T50: 191.739999949932 +/- 14.3740012263483
Measured from: 12.9319999814034
to: 204.671999931335 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.448000013828278
to: 0.551999986171722 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.83600002527237
to: 319.195999979973 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.159788 1.436555 1.010835 0.156287
0.108975 0.096385 0.079927 0.067530 [error]
Peak 0.026527 0.042001 0.033252 0.007903
0.006155 0.005911 0.005169 0.004108 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 326.032 -6.836 319.196
T90 293.040 -2.520 290.520
T50 191.740 12.932 204.672
Peak 1.000 -0.448 0.552
====== 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 -1.640 -0.134 0.133 - - - 7.31e-04 -5.68e-05 5.65e-05 70.800 57
CPL -0.918 -0.572 0.660 72.719 -15.365 86.373 1.71e-03 -8.24e-04 1.94e-03 66.040 56
=== 1-s peak 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 -1.467 -0.275 0.271 - - - 6.75e-03 -1.14e-03 1.13e-03 73.330 57
CPL 0.143 -1.306 1.893 68.103 -15.213 71.572 4.14e-02 -4.14e-02 2.89e-01 68.630 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 3.47e-07 5.85e-07 7.51e-07 1.94e-06 2.22e-06 3.62e-06 erg/cm2
90%_error_low -4.30e-08 -4.52e-08 -7.68e-08 -3.91e-07 -1.82e-07 -4.59e-07 erg/cm2
90%_error_hi 4.46e-08 4.51e-08 7.68e-08 4.54e-07 1.84e-07 5.08e-07 erg/cm2
Peak flux PL 2.69e-01 2.76e-01 2.00e-01 2.32e-01 8.36e-01 9.77e-01 ph/cm2/s
90%_error_low -7.20e-02 -4.95e-02 -4.10e-02 -8.29e-02 -1.41e-01 -1.64e-01 ph/cm2/s
90%_error_hi 7.83e-02 4.90e-02 4.07e-02 1.07e-01 1.42e-01 1.65e-01 ph/cm2/s
Fluence CPL 3.08e-07 6.26e-07 7.70e-07 7.25e-07 2.09e-06 2.43e-06 erg/cm2
90%_error_low -5.27e-08 -5.57e-08 -8.46e-08 -3.59e-07 -2.07e-07 -4.16e-07 erg/cm2
90%_error_hi 5.37e-08 5.72e-08 8.50e-08 8.10e-07 2.10e-07 8.21e-07 erg/cm2
Peak flux CPL 1.94e-01 3.10e-01 2.26e-01 6.47e-02 7.80e-01 7.94e-01 ph/cm2/s
90%_error_low -8.69e-02 -6.02e-02 -5.00e-02 -6.47e-02 -1.48e-01 -1.58e-01 ph/cm2/s
90%_error_hi 9.66e-02 6.28e-02 5.14e-02 1.12e-01 1.49e-01 1.76e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 269.8132 -27.6161 0.0105 24.7844 -167.8735 1.0357705 18.426 TRIG_00565651 Foreground time interval of the image: -6.836 17.925 (delta_t = 24.761 [sec]) Background time interval of the image: -149.075 -6.836 (delta_t = 142.239 [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 -6.836 sec. to 319.196 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.63975 ( -0.134034 0.132627 ) Norm@50keV : 7.30618E-04 ( -5.6796e-05 5.6494e-05 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 70.80 using 59 PHA bins. # Reduced chi-squared = 1.242 for 57 degrees of freedom # Null hypothesis probability = 1.034102e-01 Photon flux (15-150 keV) in 326 sec: 9.50843E-02 ( -0.0073148 0.0073327 ) ph/cm2/s Energy fluence (15-150 keV) : 2.21783e-06 ( -1.8225e-07 1.83922e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.836 sec. to 319.196 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.918447 ( -0.572069 0.659525 ) Epeak [keV] : 72.7190 ( -15.365 86.3727 ) Norm@50keV : 1.70917E-03 ( -0.000824288 0.00194481 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 66.04 using 59 PHA bins. # Reduced chi-squared = 1.179 for 56 degrees of freedom # Null hypothesis probability = 1.687202e-01 Photon flux (15-150 keV) in 326 sec: 9.13465E-02 ( -0.0078814 0.0078821 ) ph/cm2/s Energy fluence (15-150 keV) : 2.08539e-06 ( -2.06735e-07 2.09951e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from -0.448 sec. to 0.552 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.46717 ( -0.274715 0.270846 ) Norm@50keV : 6.75457E-03 ( -0.00113977 0.00113422 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 73.33 using 59 PHA bins. # Reduced chi-squared = 1.287 for 57 degrees of freedom # Null hypothesis probability = 7.144104e-02 Photon flux (15-150 keV) in 1 sec: 0.836022 ( -0.141167 0.141629 ) ph/cm2/s Energy fluence (15-150 keV) : 6.44451e-08 ( -1.17221e-08 1.18892e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.448 sec. to 0.552 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.143431 ( -1.30625 1.89319 ) Epeak [keV] : 68.1035 ( -15.2133 71.5722 ) Norm@50keV : 4.13885E-02 ( -0.0413885 0.288869 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 68.63 using 59 PHA bins. # Reduced chi-squared = 1.225 for 56 degrees of freedom # Null hypothesis probability = 1.198857e-01 Photon flux (15-150 keV) in 1 sec: 0.780045 ( -0.148313 0.148893 ) ph/cm2/s Energy fluence (15-150 keV) : 5.86935e-08 ( -1.22045e-08 1.27199e-08 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 293.04 sec. Hardness ratio (energy fluence ratio) = 1.28366008426
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 9.319897e-07 S(50-150 keV) = 1.2858337e-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 = -4.514319169079626E-01, IMY = 9.699713905324081E-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: -149.075400 -6.836000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9811 -15.6360 0.3 36.3 -120.4 10.6275 38.1 0.3 Sco X-1 254.5398 35.2985 4.7 47.0 -39.6 0.9019 2.4 4.8 Her X-1 255.8948 -37.8039 5.3 39.7 -159.8 0.4180 2.2 5.0 4U 1700-377 256.2906 -36.3852 9.8 38.4 -158.7 0.2153 1.2 7.4 GX 349+2 262.9838 -24.7870 2.3 25.9 -152.3 0.7603 5.1 2.8 GX 1+4 264.8460 -44.6057 8.9 41.9 -174.0 -0.2830 -1.3 10.3 4U 1735-44 268.3857 -1.5902 3.3 12.4 -85.2 0.5375 3.5 8.3 SW J1753.5-0127 270.3845 -25.0246 9.5 22.2 -166.1 0.1679 1.2 6.4 GX 5-1 270.1254 -25.8243 3.2 23.1 -166.5 0.4905 3.7 10.7 GRS 1758-258 273.9699 -14.0727 3.2 11.1 -156.6 0.4967 3.6 3.0 GX 17+2 276.0743 -30.3814 5.6 25.8 177.9 0.3333 2.0 7.8 H1820-303 284.9092 -24.7646 30.9 20.3 157.4 0.0569 0.4 11.6 HT1900.1-2455 288.8056 10.9390 0.7 18.0 17.4 2.3397 16.1 0.6 GRS 1915+105 299.6229 35.2146 2.8 44.1 12.3 1.1152 4.1 1.8 Cyg X-1 308.1269 41.0655 6.4 52.6 15.7 1.0881 1.8 6.8 Cyg X-3 263.0931 -34.0214 0.0 33.2 -163.9 0.2428 1.5 12.3 GX 354-0 266.5466 -32.2709 1.9 30.2 -167.0 1.0038 6.2 ------ UNKNOWN 246.1363 -48.9322 2.8 52.7 -162.9 1.5485 4.1 ------ UNKNOWN 248.0864 35.4585 3.1 50.5 -44.8 2.7779 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -6.836000 17.924600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 245.0154 -15.6398 5.2 36.3 -120.4 -0.2257 -2.2 2.1 Sco X-1 254.5766 35.2206 0.0 46.9 -39.6 -0.1937 -1.4 9.4 Her X-1 256.0809 -37.8590 5.8 39.6 -160.0 0.1602 2.0 4.6 4U 1700-377 256.4803 -36.4096 47.9 38.3 -158.9 -0.0190 -0.2 2.3 GX 349+2 262.8404 -24.7964 6.3 26.0 -152.1 -0.1037 -1.8 9.7 GX 1+4 264.8778 -44.4296 10.7 41.8 -174.0 -0.0856 -1.1 5.9 4U 1735-44 268.2407 -1.3244 20.1 12.6 -84.3 -0.0313 -0.6 10.8 SW J1753.5-0127 270.1058 -25.1673 6.2 22.5 -165.7 0.1020 1.8 11.0 GX 5-1 270.3295 -25.9034 10.5 23.0 -167.0 -0.0594 -1.1 9.7 GRS 1758-258 274.1248 -14.2138 0.0 11.1 -157.6 -0.1209 -2.3 12.7 GX 17+2 275.8003 -30.2244 5.9 25.6 178.5 0.1068 2.0 10.7 H1820-303 284.9113 -24.7544 0.0 20.3 157.4 0.0532 0.9 12.1 HT1900.1-2455 288.8123 10.7902 11.0 17.9 17.7 0.0572 1.0 9.4 GRS 1915+105 299.5419 35.1957 4.5 44.0 12.2 -0.2717 -2.6 2.4 Cyg X-1 308.1417 40.8384 4.2 52.4 15.9 0.6223 2.7 7.0 Cyg X-3 263.0931 -34.0214 0.0 33.2 -163.9 0.0451 0.7 12.3 GX 354-0 264.4160 -57.9651 1.9 54.5 179.7 1.2334 6.2 ------ UNKNOWN 269.8131 -27.6161 0.6 24.8 -167.9 1.0352 18.5 ------ UNKNOWN 247.6848 30.5112 2.2 47.2 -49.8 1.2272 5.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 68.524600 311.724600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9791 -15.6436 0.2 25.9 -63.4 19.4659 62.6 0.2 Sco X-1 256.0030 -37.7671 54.2 15.4 -130.5 0.0473 0.2 4.7 4U 1700-377 256.5004 -36.4976 2.7 14.3 -127.4 0.9691 4.3 5.5 GX 349+2 262.9980 -24.7370 3.2 6.7 -62.1 0.8577 3.7 0.8 GX 1+4 264.6147 -44.6003 3.7 17.5 -163.4 0.6985 3.2 10.6 4U 1735-44 268.2440 -1.6111 0.0 26.0 0.7 -0.1011 -0.5 12.1 SW J1753.5-0127 270.1282 -25.1955 160.8 2.4 11.2 -0.0176 -0.1 11.0 GX 5-1 270.2887 -25.7446 6.1 1.9 17.5 0.5116 2.2 0.8 GRS 1758-258 274.0958 -14.1784 5.6 14.0 21.7 0.4641 2.0 10.0 GX 17+2 276.0173 -30.3318 68.8 6.1 122.4 0.0401 0.2 5.2 H1820-303 285.0196 -24.8594 7.7 13.9 86.4 0.3583 1.5 3.8 HT1900.1-2455 288.8270 10.9546 1.7 42.7 32.4 3.5660 6.7 1.8 GRS 1915+105 263.1589 -33.6843 6.0 8.3 -134.1 0.4549 1.9 12.4 GX 354-0 314.7828 -41.6745 3.7 39.1 127.4 1.9776 3.1 ------ UNKNOWN 302.8596 -66.9702 2.3 44.2 166.5 2.6187 5.0 ------ UNKNOWN 269.8094 -27.6508 1.0 0.0 -179.4 2.5816 11.0 ------ UNKNOWN 266.5296 -32.2339 1.9 5.4 -145.0 1.4190 6.0 ------ UNKNOWN 252.6369 -48.8483 2.9 25.0 -148.4 0.9584 4.0 ------ UNKNOWN 233.6673 9.2362 2.6 50.8 -44.4 5.1286 4.4 ------ UNKNOWN 232.0623 4.1784 2.3 48.3 -50.6 5.7364 5.2 ------ UNKNOWN