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Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
213.6124 -64.9554 0.0211 16.0347 -166.3599 1.6049647 9.134 TRIG_00657564
Foreground time interval of the image:
-13.632 134.368 (delta_t = 148.000 [sec])
Background time interval of the image:
-204.899 -13.632 (delta_t = 191.267 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 5) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 72.000000
8 ms binning
From T100_start-3 s to T100_start+3 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 72.000000
2 ms binning
From T100_start-1 s to T100_start+1 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 72.000000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
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 -13.632 sec. to 134.368 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.95256 ( -0.219386 0.230686 )
Norm@50keV : 7.43679E-04 ( -0.000106924 0.000103845 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.00 using 59 PHA bins.
# Reduced chi-squared = 0.6492 for 57 degrees of freedom
# Null hypothesis probability = 9.815691e-01
Photon flux (15-150 keV) in 148 sec: 0.109188 ( -0.0124351 0.0124447 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01297e-06 ( -1.3745e-07 1.4065e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -13.632 sec. to 134.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.94433 ( -0.913938 0.726847 )
Epeak [keV] : 271.591 ( )
Norm@50keV : 7.51517E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.01 using 59 PHA bins.
# Reduced chi-squared = 0.6608 for 56 degrees of freedom
# Null hypothesis probability = 9.764635e-01
Photon flux (15-150 keV) in 148 sec: 0.109200 ( -0.012481 0.012395 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01307e-06 ( -8.15273e-08 1.38547e-07 ) ergs/cm2
Band function
Time interval is from -13.632 sec. to 134.368 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.53188 ( 1.53189 1.53189 )
beta : -1.95256 ( 1.95256 0.219075 )
Epeak [keV] : 13.5369 ( -13.5356 -13.5356 )
Norm@50keV : 2.05269E-03 ( -0.00205273 0.818356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.00 using 59 PHA bins.
# Reduced chi-squared = 0.6728 for 55 degrees of freedom
# Null hypothesis probability = 9.702350e-01
Photon flux (15-150 keV) in 148 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.3207 (-1.42654 1.66333)
R^2/D10^2 : 4.38203E-02 (-0.0189994 0.0337336)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.40 using 59 PHA bins.
# Reduced chi-squared = 1.007 for 57 degrees of freedom
# Null hypothesis probability = 4.600736e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.421e-07 3.117e-08
25- 50 3.692e-07 5.927e-08
50-150 2.110e-07 6.591e-08
15-150 7.222e-07 1.027e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 73.8908 (-23.9215 46.1403)
Norm : 0.521076 (-0.0903342 0.113258)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.52 using 59 PHA bins.
# Reduced chi-squared = 0.6759 for 57 degrees of freedom
# Null hypothesis probability = 9.712136e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.989e-07 3.019e-08
25- 50 3.210e-07 3.996e-08
50-150 4.289e-07 1.780e-07
15-150 9.488e-07 1.797e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.48160 (-1.62241 2.57508)
R1^2/D10^2 : 0.745771 (-0.594201 2.04005)
kT2 [keV] : 16.5157 (-4.1192 14.151)
R2^2/D10^2 : 5.85552E-03 (-0.00523791 0.0129576)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.07 using 59 PHA bins.
# Reduced chi-squared = 0.7103 for 55 degrees of freedom
# Null hypothesis probability = 9.486066e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.181e-07 1.124e-07
25- 50 2.934e-07 1.359e-07
50-150 4.063e-07 2.342e-07
15-150 9.178e-07 4.167e-07
Peak spectrum fit
Power-law model
Time interval is from 50.860 sec. to 51.860 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.43741 ( -0.813236 1.08139 )
Norm@50keV : 2.18331E-03 ( -0.00218326 0.0013853 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.12 using 59 PHA bins.
# Reduced chi-squared = 1.353 for 57 degrees of freedom
# Null hypothesis probability = 3.920492e-02
Photon flux (15-150 keV) in 1 sec: 0.412985 ( -0.145701 0.145877 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.14849e-08 ( -9.70039e-09 1.13278e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 50.860 sec. to 51.860 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98764 ( )
Epeak [keV] : 11.9418 ( )
Norm@50keV : 2.84543E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.84 using 59 PHA bins.
# Reduced chi-squared = 1.390 for 56 degrees of freedom
# Null hypothesis probability = 2.838464e-02
Photon flux (15-150 keV) in 1 sec: 0.412659 ( -0.145575 0.144872 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.11455e-08 ( -1.12664e-08 1.16471e-08 ) ergs/cm2
Band function
Time interval is from 50.860 sec. to 51.860 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.40084 ( 1.54359 1.54359 )
beta : -2.64395 ( 2.50372 0.866842 )
Epeak [keV] : 18.3536 ( -12.0975 -12.0975 )
Norm@50keV : 183.280 ( -218.95 1612.6 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.76 using 59 PHA bins.
# Reduced chi-squared = 1.396 for 55 degrees of freedom
# Null hypothesis probability = 2.790313e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.12682 (-1.65302 3.05217)
R^2/D10^2 : 2.88196 (-2.87872 15.7402)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.94 using 59 PHA bins.
# Reduced chi-squared = 1.385 for 57 degrees of freedom
# Null hypothesis probability = 2.878265e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.739e-09 4.562e-09
25- 50 5.374e-09 3.541e-09
50-150 2.463e-10 2.558e-10
15-150 1.336e-08 8.535e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 26.0482 (-16.6769 156.079)
Norm : 3.65215 (-2.32067 9.6049)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.15 using 59 PHA bins.
# Reduced chi-squared = 1.371 for 57 degrees of freedom
# Null hypothesis probability = 3.296441e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.865e-09 4.230e-09
25- 50 7.221e-09 4.406e-09
50-150 3.259e-09 2.871e-09
15-150 1.734e-08 1.113e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.68035 (-1.52428 2.4616)
R1^2/D10^2 : 4.14326 (-3.50583 16.078)
kT2 [keV] : 73.4019 (-64.7811 -76.5583)
R2^2/D10^2 : 2.69675E-04 (-0.000244894 0.0487427)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.72 using 59 PHA bins.
#Fit statistic : Chi-Squared = 74.69 using 59 PHA bins.
# Reduced chi-squared = 1.359 for 55 degrees of freedom
# Reduced chi-squared = 1.358 for 55 degrees of freedom
# Null hypothesis probability = 3.958985e-02
# Null hypothesis probability = 3.978722e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.808e-09 4.711e-09
25- 50 5.182e-09 3.019e-09
50-150 1.539e-08 9.470e-09
15-150 2.838e-08 1.518e-08
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.95256 ( -0.219386 0.230686 )
Norm@50keV : 7.43679E-04 ( -0.000106924 0.000103845 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.00 using 59 PHA bins.
# Reduced chi-squared = 0.6492 for 57 degrees of freedom
# Null hypothesis probability = 9.815691e-01
Photon flux (15-150 keV) in 148 sec: 0.109188 ( -0.0124351 0.0124447 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01297e-06 ( -1.3745e-07 1.4065e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.94433 ( -0.913938 0.726847 )
Epeak [keV] : 271.591 ( )
Norm@50keV : 7.51517E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.01 using 59 PHA bins.
# Reduced chi-squared = 0.6608 for 56 degrees of freedom
# Null hypothesis probability = 9.764635e-01
Photon flux (15-150 keV) in 148 sec: 0.109200 ( -0.012481 0.012395 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01307e-06 ( -8.15273e-08 1.38547e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.53188 ( 1.53189 1.53189 )
beta : -1.95256 ( 1.95256 0.219075 )
Epeak [keV] : 13.5369 ( -13.5356 -13.5356 )
Norm@50keV : 2.05269E-03 ( -0.00205273 0.840293 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.00 using 59 PHA bins.
# Reduced chi-squared = 0.6728 for 55 degrees of freedom
# Null hypothesis probability = 9.702350e-01
Photon flux (15-150 keV) in 148 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.01e-07
S(50-100 keV) = 3.11e-07
T90 vs. Hardness ratio plot
T90 = 137.271999955177 sec.
Hardness ratio (energy fluence ratio) = 1.03322
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.949875
Count Ratio (50-100 keV) / (15-25 keV) = 0.543723
Mask shadow pattern
IMX = -2.792950495861873E-01, IMY = 6.777528116018484E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 72.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 72.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 72.000000
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:
-204.899400 -13.632000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3899 -60.6210 3.1 35.1 -153.3 1.0101 3.7 2.2 Cen X-3
186.3343 -62.7917 5.1 27.3 -154.0 0.4964 2.2 8.9 GX 301-2
244.9872 -15.6499 0.5 39.1 -14.2 6.4663 22.7 0.7 Sco X-1
255.7835 -37.9535 42.3 20.4 19.0 0.0561 0.3 11.6 4U 1700-377
256.5908 -36.3167 6.3 22.2 18.3 0.3979 1.8 9.9 GX 349+2
262.8748 -24.7310 31.4 34.9 17.0 -0.1118 -0.4 7.4 GX 1+4
264.8626 -44.3132 11.8 20.1 46.2 0.2216 1.0 9.7 4U 1735-44
270.4020 -25.1662 2.3 37.8 27.5 1.7824 5.0 8.3 GX 5-1
270.2522 -25.7551 3.3 37.2 27.9 1.2816 3.5 2.8 GRS 1758-258
274.0259 -14.0598 22.0 49.2 24.1 -0.3799 -0.5 1.8 GX 17+2
276.0767 -30.5162 3.3 36.2 39.5 -1.3528 -3.5 11.9 H1820-303
285.1076 -24.8936 11.6 45.5 44.0 -0.8739 -1.0 4.2 HT1900.1-2455
262.8244 -33.8787 5.0 26.9 25.7 0.5910 2.3 8.6 GX 354-0
116.4104 -59.1724 3.8 57.2 -173.9 3.6889 3.0 ------ UNKNOWN
246.9900 3.2652 2.2 58.1 -14.4 5.0286 5.2 ------ UNKNOWN
234.6912 -5.0664 2.7 49.3 -29.3 1.8937 4.2 ------ UNKNOWN
210.6056 -23.9810 2.6 36.4 -69.8 1.9756 4.4 ------ UNKNOWN
220.5980 -7.2808 2.5 49.0 -48.1 4.3856 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-13.632000 134.368000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.6065 -60.5493 4.0 35.1 -153.2 -0.7270 -2.9 9.6 Cen X-3
186.3576 -62.8119 6.6 27.3 -154.1 -0.3540 -1.7 8.6 GX 301-2
244.9348 -15.5827 6.4 39.1 -14.3 0.4675 1.8 4.3 Sco X-1
255.8040 -37.8451 22.8 20.5 18.9 0.0933 0.5 8.7 4U 1700-377
256.5278 -36.5929 7.8 21.9 18.5 0.2731 1.5 11.1 GX 349+2
262.9905 -24.5913 8.0 35.1 17.1 -0.3926 -1.4 9.3 GX 1+4
264.8174 -44.3097 15.5 20.1 46.1 -0.1624 -0.7 9.0 4U 1735-44
270.1484 -25.1523 3.9 37.7 27.2 0.9183 3.0 8.6 GX 5-1
270.2735 -25.7594 7.4 37.2 27.9 -0.4851 -1.5 1.8 GRS 1758-258
273.9388 -13.9780 3.6 49.2 23.9 2.2678 3.2 5.2 GX 17+2
276.0056 -30.3939 9.4 36.3 39.2 0.4389 1.2 4.5 H1820-303
285.0404 -24.8523 7.4 45.5 43.9 1.2612 1.6 4.1 HT1900.1-2455
263.0566 -33.7991 6.1 27.1 26.0 0.4165 1.9 4.0 GX 354-0
213.6130 -64.9547 1.3 16.0 -166.4 1.5899 9.0 ------ UNKNOWN
250.5653 -7.3032 2.4 48.1 -8.1 1.8811 4.8 ------ UNKNOWN
167.6857 -64.4509 2.4 35.1 -160.3 1.1494 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
798.500630 963.110000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.3408 -1.4346 149.8 48.7 -42.0 -0.0383 -0.1 2.0 SW J1753.5-0127
270.2272 -24.9697 3.5 39.4 -73.5 1.4708 3.3 7.3 GX 5-1
270.2363 -25.8610 3.4 39.3 -74.9 1.5608 3.4 7.9 GRS 1758-258
273.9813 -14.0051 8.0 38.4 -55.2 0.4088 1.4 2.4 GX 17+2
276.0720 -30.2245 4.5 34.1 -82.1 0.7786 2.5 11.5 H1820-303
285.1521 -24.7407 0.0 25.9 -71.4 -0.2392 -1.1 12.5 HT1900.1-2455
288.8046 10.9590 0.9 41.6 -9.6 3.0343 12.5 0.9 GRS 1915+105
318.8045 -26.5587 3.3 6.1 157.2 0.5284 3.5 ------ UNKNOWN
15.5998 -62.1748 3.3 57.0 179.1 4.3822 3.6 ------ UNKNOWN
296.3911 1.7749 2.1 29.7 -7.8 1.0064 5.5 ------ UNKNOWN
284.0057 15.1402 2.7 47.7 -11.4 1.3374 4.2 ------ UNKNOWN
9.0480 -70.5976 2.9 57.4 -170.4 3.3006 4.0 ------ UNKNOWN
272.0204 2.3082 2.6 47.6 -35.1 1.7131 4.5 ------ UNKNOWN
Plot creation:
Sun Nov 1 14:35:17 EST 2015