Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
315.2138 -64.4503 0.0111 49.0892 -146.9342 4.3509338 17.270 TRIG_00863421
Foreground time interval of the image:
-4.440 31.701 (delta_t = 36.141 [sec])
Background time interval of the image:
-239.600 -4.440 (delta_t = 235.160 [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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
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 -4.440 sec. to 104.028 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47772 ( -0.128392 0.128459 )
Norm@50keV : 3.89021E-03 ( -0.000274797 0.000274502 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.52 using 59 PHA bins.
# Reduced chi-squared = 1.044 for 57 degrees of freedom
# Null hypothesis probability = 3.839234e-01
Photon flux (15-150 keV) in 108.5 sec: 0.482810 ( -0.036352 0.036518 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.01966e-06 ( -3.03545e-07 3.04873e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -4.440 sec. to 104.028 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47496 ( -0.341859 0.159966 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 3.90240E-03 ( -0.000275644 0.000274438 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.53 using 59 PHA bins.
# Reduced chi-squared = 1.063 for 56 degrees of freedom
# Null hypothesis probability = 3.482934e-01
Photon flux (15-150 keV) in 108.5 sec: 0.484331 ( -0.042399 0.039166 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.02995e-06 ( -3.51035e-07 2.45675e-07 ) ergs/cm2
Band function
Time interval is from -4.440 sec. to 104.028 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 16.5609 ( )
R^2/D10^2 : 3.79448E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 119.56 using 59 PHA bins.
# Reduced chi-squared = 2.0976 for 57 degrees of freedom
# Null hypothesis probability = 2.462245e-06
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.316e-07 3.461e-08
25- 50 1.003e-06 9.949e-08
50-150 1.947e-06 2.262e-07
15-150 3.182e-06 2.734e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-32.935 -200)
Norm : 1.98806 (-0.140316 0.140316)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.42 using 59 PHA bins.
# Reduced chi-squared = 1.113 for 57 degrees of freedom
# Null hypothesis probability = 2.604402e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.372e-07 4.877e-08
25- 50 1.033e-06 1.016e-07
50-150 2.266e-06 5.485e-07
15-150 3.837e-06 7.188e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.65418 (-2.00721 2.18029)
R1^2/D10^2 : 0.384755 (-0.210226 0.451667)
kT2 [keV] : 32.8261 (-8.37289 20.8817)
R2^2/D10^2 : 2.96882E-03 (-0.00223751 0.00525898)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.41 using 59 PHA bins.
# Reduced chi-squared = 1.171 for 55 degrees of freedom
# Null hypothesis probability = 1.804748e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.784e-07 1.404e-07
25- 50 1.019e-06 2.499e-07
50-150 2.552e-06 9.692e-07
15-150 4.049e-06 1.351e-06
Peak spectrum fit
Power-law model
Time interval is from 0.868 sec. to 1.868 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29041 ( -0.315024 0.311885 )
Norm@50keV : 2.57761E-02 ( -0.00463479 0.00462483 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.34 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 57 degrees of freedom
# Null hypothesis probability = 3.232498e-01
Photon flux (15-150 keV) in 1 sec: 3.06982 ( -0.5831 0.58648 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.55347e-07 ( -4.87091e-08 4.88886e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.868 sec. to 1.868 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.21171 ( -2.19808 2.54175 )
Epeak [keV] : 75.7184 ( )
Norm@50keV : 5.20177E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.53 using 59 PHA bins.
# Reduced chi-squared = 1.063 for 56 degrees of freedom
# Null hypothesis probability = 3.483754e-01
Photon flux (15-150 keV) in 1 sec: 3.02912 ( -0.61311 0.58964 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.5321e-07 ( -5.04557e-08 4.97603e-08 ) ergs/cm2
Band function
Time interval is from 0.868 sec. to 1.868 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 19.0215 (-3.62326 5.07182)
R^2/D10^2 : 0.166711 (-0.0924444 0.17718)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.83 using 59 PHA bins.
# Reduced chi-squared = 1.155 for 57 degrees of freedom
# Null hypothesis probability = 1.978601e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.185e-08 4.606e-09
25- 50 5.705e-08 1.848e-08
50-150 1.517e-07 5.154e-08
15-150 2.206e-07 6.580e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-66.4816 -200)
Norm : 12.9311 (-2.35121 2.35121)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.67 using 59 PHA bins.
# Reduced chi-squared = 1.117 for 57 degrees of freedom
# Null hypothesis probability = 2.535224e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.220e-08 1.946e-08
25- 50 6.195e-08 3.588e-08
50-150 1.359e-07 7.785e-08
15-150 2.300e-07 1.341e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.21224 (-1.5777 2.21291)
R1^2/D10^2 : 881.740 (-868.876 -881.74)
kT2 [keV] : 21.1896 (-4.40903 6.85102)
R2^2/D10^2 : 0.110735 (-0.0677433 0.0902838)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.38 using 59 PHA bins.
# Reduced chi-squared = 1.061 for 55 degrees of freedom
# Null hypothesis probability = 3.523084e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.831e-08 1.329e-08
25- 50 4.919e-08 2.188e-08
50-150 1.620e-07 6.560e-08
15-150 2.395e-07 7.470e-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: 1.31013 ( -0.143502 0.141973 )
Norm@50keV : 8.25168E-03 ( -0.000667394 0.000665991 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.02 using 59 PHA bins.
# Reduced chi-squared = 1.281 for 57 degrees of freedom
# Null hypothesis probability = 7.489679e-02
Photon flux (15-150 keV) in 36.14 sec: 0.986306 ( -0.086471 0.0869033 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.93967e-06 ( -2.46832e-07 2.47532e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12935 ( -0.607074 0.305439 )
Epeak [keV] : 280.956 ( -280.825 -280.825 )
Norm@50keV : 9.91274E-03 ( -0.00223927 0.00801277 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.71 using 59 PHA bins.
# Reduced chi-squared = 1.298 for 56 degrees of freedom
# Null hypothesis probability = 6.602170e-02
Photon flux (15-150 keV) in 36.14 sec: 0.976718 ( -0.091013 0.091152 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92282e-06 ( -2.55289e-07 2.53855e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 9.83e-07
S(50-100 keV) = 1.41e-06
T90 vs. Hardness ratio plot
T90 = 82.6319999694824 sec.
Hardness ratio (energy fluence ratio) = 1.43438
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.28818
Count Ratio (50-100 keV) / (15-25 keV) = 1.09766
Mask shadow pattern
IMX = -9.670959701961642E-01, IMY = 6.296188426576044E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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:
-239.600000 -4.440000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
285.0959 -24.8955 4.2 36.0 -82.0 1.3373 2.7 3.6 HT1900.1-2455
288.8139 10.9856 2.1 42.5 -24.2 2.0172 5.6 2.6 GRS 1915+105
299.6059 35.2398 2.1 55.2 6.5 5.5960 5.6 2.4 Cyg X-1
329.7447 27.3098 2.7 43.5 38.7 2.5387 4.3 ------ UNKNOWN
333.7459 2.7916 2.8 21.6 61.7 1.0320 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-4.440000 31.700600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
284.8457 -24.8473 0.0 36.2 -81.9 0.2853 1.7 11.3 HT1900.1-2455
288.7198 10.8496 10.5 42.5 -24.5 -0.1350 -1.1 7.4 GRS 1915+105
299.6316 35.2732 4.5 55.2 6.6 -0.7583 -2.6 4.7 Cyg X-1
347.2364 -38.2504 2.0 31.6 169.7 0.5568 5.8 ------ UNKNOWN
315.2138 -64.4503 0.7 49.1 -146.9 4.3501 17.3 ------ UNKNOWN
274.1143 7.8584 2.1 53.1 -38.2 2.2660 5.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
97.700600 962.534600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
256.0237 -37.8989 2.1 43.2 -41.1 6.2363 5.4 3.7 4U 1700-377
256.5006 -36.5562 4.7 44.2 -39.6 3.0030 2.5 8.6 GX 349+2
262.8667 -24.8466 10.1 51.8 -25.5 -1.8635 -1.1 9.8 GX 1+4
264.5793 -44.3669 3.1 34.3 -38.5 3.0257 3.8 8.6 4U 1735-44
270.2303 -25.1889 6.2 48.7 -17.8 2.5273 1.9 7.2 GX 5-1
270.3097 -25.7211 3.1 48.2 -18.1 4.9982 3.7 1.4 GRS 1758-258
274.0081 -13.8946 12.9 57.9 -8.5 -3.3970 -1.0 8.5 GX 17+2
275.8829 -30.3749 5.7 41.9 -14.4 1.8812 2.0 2.2 H1820-303
284.9159 -24.9332 41.8 44.1 -0.6 0.3129 0.3 6.6 HT1900.1-2455
262.8207 -33.9496 7.0 43.8 -31.3 1.7221 1.7 10.9 GX 354-0
357.0779 -39.1023 3.2 35.1 104.9 5.5167 3.7 ------ UNKNOWN
45.0738 -41.7942 2.2 53.0 151.5 18.3633 5.3 ------ UNKNOWN
40.2615 -47.7686 3.4 46.1 152.3 5.6618 3.4 ------ UNKNOWN
41.1528 -47.8875 2.6 46.4 153.1 7.5408 4.5 ------ UNKNOWN
302.6492 -21.3112 3.4 43.9 23.6 4.2601 3.4 ------ UNKNOWN
32.7048 -59.1272 3.1 34.7 158.9 3.9027 3.8 ------ UNKNOWN
293.4441 -28.4854 2.6 38.5 9.0 4.0592 4.5 ------ UNKNOWN
278.3059 -11.7785 3.6 58.5 -3.0 12.5734 3.2 ------ UNKNOWN
84.6940 -51.9657 3.6 57.2 -173.9 12.4084 3.2 ------ UNKNOWN
271.9919 -37.6821 2.6 36.8 -24.1 3.7305 4.3 ------ UNKNOWN
248.3362 -67.3861 2.4 26.1 -86.0 3.5455 4.8 ------ UNKNOWN
Plot creation:
Fri Oct 26 12:22:20 EDT 2018