Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
277.6740 -6.7465 0.0135 5.3 13.2 0.0546 14.2 TRIG_01005428
------------------------------------------
Foreground time interval of the image:
0.000 0.012 (delta_t = 0.012 [sec])
Background time interval of the image:
-150.091 0.000 (delta_t = 150.091 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) 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.
- 5) 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.
- 6) 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 0.008000
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 0.008000
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 0.008000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of 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.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 0.012 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.12275 ( -0.2165 0.230151 )
Norm@50keV : 0.204057 ( -0.0327978 0.031929 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.87e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.012 sec: 32.4687 ( -4.22954 4.23077 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.28037e-08 ( -3.30955e-09 3.3423e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.012 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47669 ( -1.15617 0.701253 )
Epeak [keV] : 33.8377 ( -33.2093 -33.8386 )
Norm@50keV : 0.489178 ( -0.489232 1.80008 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 34.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.88e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.012 sec: 32.2315 ( -4.2642 4.2527 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.19305e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.012 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26865 ( 1.29053 5.97572 )
beta : -2.72573 ( 2.70779 0.734884 )
Epeak [keV] : 34.6031 ( -34.569 19.723 )
Norm@50keV : 0.657451 ( -0.620221 60808.8 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.012 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] : 10.0490 (-1.37419 1.51669)
R^2/D10^2 : 15.3853 (-6.61949 11.9502)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.88e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.803e-09 9.654e-10
25- 50 9.522e-09 1.640e-09
50-150 5.040e-09 1.639e-09
15-150 1.836e-08 3.144e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 56.0583 (-15.2819 24.4497)
Norm : 178.609 (-36.048 42.4119)
------------------------------------------------------------
#Fit statistic : Chi-Squared 34.85 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.91e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.323e-09 8.940e-10
25- 50 7.929e-09 1.147e-09
50-150 8.515e-09 2.483e-09
15-150 2.177e-08 3.648e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.02119 (-1.53694 2.67645)
R1^2/D10^2 : 338.197 (-284.102 1289.8)
kT2 [keV] : 13.7195 (-2.70668 7.29125)
R2^2/D10^2 : 3.56454 (-3.07758 4.9013)
------------------------------------------------------------
#Fit statistic : Chi-Squared 35.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.83e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.490e-09 2.767e-09
25- 50 7.596e-09 4.019e-09
50-150 7.631e-09 4.387e-09
15-150 2.072e-08 9.023e-09
Peak spectrum fit
Power-law model
Time interval is from -0.492 sec. to 0.508 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.00107 ( -0.465208 0.539298 )
Norm@50keV : 3.50245E-03 ( -0.0012815 0.00123777 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.40e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.525626 ( -0.14898 0.148981 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.22982e-08 ( -1.0745e-08 1.13996e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.492 sec. to 0.508 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 9.06962E-02 ( -4.14083 2.21787 )
Epeak [keV] : 39.8734 ( -39.8697 -39.8697 )
Norm@50keV : 4.75899E-02 ( -0.0479479 19.0695 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.10 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.85e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.505287 ( -0.146187 0.149487 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.82077e-08 ( -9.6037e-09 1.18379e-08 ) ergs/cm2
Band function
Time interval is from -0.492 sec. to 0.508 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.49291E-02 ( -1.92054 3.51785 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 39.8604 ( -18.4435 153.723 )
Norm@50keV : 4.79966E-02 ( -0.0479966 19.2606 )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 sec: 0.508261 ( 6.49174 -0.150574 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.82644e-08 ( -2.82574e-08 -9.4783e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.89813 (-2.62111 3.54262)
R^2/D10^2 : 0.271433 (-0.271449 0.603622)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.82 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.95e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.397e-09 3.199e-09
25- 50 1.322e-08 7.995e-09
50-150 6.700e-09 4.590e-09
15-150 2.532e-08 1.587e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 60.6620 (-30.8635 109.228)
Norm : 2.80886 (-1.01369 1.61185)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.82 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.95e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.072e-09 3.269e-09
25- 50 1.080e-08 6.440e-09
50-150 1.240e-08 9.825e-09
15-150 3.027e-08 1.815e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.85989 (-5.85991 -5.85991)
R1^2/D10^2 : 0.955115 (-0.955107 -0.955107)
kT2 [keV] : 13.6379 (-13.6379 -13.6379)
R2^2/D10^2 : 5.59365E-02 (-0.0559362 0.664711)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.02 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.51e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.411e-09 3.717e-09
25- 50 1.196e-08 7.375e-09
50-150 9.967e-09 7.270e-09
15-150 2.834e-08 1.779e-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: 2.12275 ( -0.2165 0.230151 )
Norm@50keV : 0.204057 ( -0.0327978 0.031929 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.87e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.012 sec: 32.4687 ( -4.22954 4.23077 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.28037e-08 ( -3.30955e-09 3.3423e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47669 ( -1.15617 0.701253 )
Epeak [keV] : 33.8377 ( -33.0672 -33.8386 )
Norm@50keV : 0.489178 ( -0.489232 1.80008 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 34.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.88e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.012 sec: 32.2315 ( -4.2642 4.2527 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.19305e-08 ( 0 0 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26865 ( 1.29053 5.97572 )
beta : -2.72573 ( 2.70779 0.734884 )
Epeak [keV] : 34.6031 ( -34.569 19.6896 )
Norm@50keV : 0.657451 ( -0.620221 60808.8 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.012 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) = 7.10e-09
S(50-100 keV) = 6.52e-09
T90 vs. Hardness ratio plot
T90 = 0.0119999647140503 sec.
Hardness ratio (energy fluence ratio) = 0.91831
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.967035
Count Ratio (50-100 keV) / (15-25 keV) = 0.407801
Mask shadow pattern
IMX = 9.067166654181338E-02, IMY = -2.122206873180670E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
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:
-150.091400 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0005 -15.6325 0.8 32.8 -77.1 4.8314 13.5 1.3 Sco X-1
254.3760 35.2727 4.5 52.5 -1.8 1.1017 2.6 5.8 Her X-1
255.9690 -37.7877 1.8 32.8 -122.6 1.9242 6.4 3.5 4U 1700-377
256.5975 -36.4078 5.1 31.4 -121.5 0.6109 2.2 7.9 GX 349+2
262.9611 -24.9079 3.5 19.6 -110.1 0.7036 3.2 10.1 GX 1+4
264.7445 -44.5008 40.6 34.6 -139.3 -0.0771 -0.3 3.1 4U 1735-44
268.4654 -1.5738 5.7 14.5 -21.6 -0.3637 -2.0 9.3 SW J1753.5-0127
270.3111 -25.0479 2.2 15.2 -127.0 0.9270 5.2 2.4 GX 5-1
270.2627 -25.8454 3.7 15.9 -128.4 0.5644 3.1 6.5 GRS 1758-258
274.0705 -14.0162 3.2 4.9 -92.0 0.6327 3.7 4.0 GX 17+2
275.9393 -30.2783 3.9 18.5 -149.5 0.5718 3.0 5.4 H1820-303
284.8887 -24.8882 8.1 14.2 179.3 -0.2533 -1.4 8.2 HT1900.1-2455
288.7248 10.7664 0.0 24.9 47.4 0.0520 0.2 11.6 GRS 1915+105
263.0524 -33.8812 7.1 26.1 -126.4 0.3478 1.6 4.2 GX 354-0
303.4727 17.7065 3.1 38.5 63.2 1.7615 3.8 ------ UNKNOWN
314.4438 -37.9634 2.8 41.2 158.7 1.5573 4.1 ------ UNKNOWN
282.7919 -21.0332 2.4 9.9 179.8 0.8319 4.8 ------ UNKNOWN
302.6596 -63.3615 2.8 54.1 -169.8 2.4901 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.012000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0622 -15.5161 6.5 32.7 -76.9 0.0126 1.8 8.9 Sco X-1
254.5728 35.3596 7.0 52.5 -1.5 0.0166 1.7 5.7 Her X-1
255.8397 -37.8219 5.6 32.9 -122.5 -0.0127 -2.1 7.1 4U 1700-377
256.2942 -36.5421 3.8 31.7 -121.3 0.0176 3.0 9.9 GX 349+2
263.1263 -24.8618 11.3 19.5 -110.3 -0.0047 -1.0 9.5 GX 1+4
264.5659 -44.3340 4.2 34.5 -139.0 0.0151 2.7 10.3 4U 1735-44
268.4027 -1.5999 6.5 14.5 -21.8 0.0068 1.8 9.1 SW J1753.5-0127
270.2440 -25.1760 139.2 15.4 -127.0 0.0003 0.1 6.2 GX 5-1
270.2376 -25.6673 5.2 15.8 -128.0 0.0110 2.8 5.7 GRS 1758-258
274.1622 -14.0133 4.4 4.8 -92.4 -0.0099 -2.6 9.2 GX 17+2
276.1042 -30.4664 4.0 18.6 -150.0 0.0108 2.9 11.0 H1820-303
285.2138 -24.9216 4.6 14.4 178.3 -0.0097 -2.5 9.7 HT1900.1-2455
288.7220 11.0697 7.5 25.2 47.1 -0.0069 -1.5 8.7 GRS 1915+105
263.2002 -33.8933 14.7 26.0 -126.6 0.0039 0.8 11.1 GX 354-0
277.6740 -6.7465 0.8 5.3 13.2 0.0546 14.3 ------ UNKNOWN
296.9046 -50.8503 2.5 41.6 -174.2 0.0267 4.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
34.908610 549.518000
550.608000 962.729400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9887 -15.6282 0.7 33.2 -90.9 27.2337 17.5 0.9 Sco X-1
254.3273 35.3345 5.1 47.5 -8.6 2.9367 2.2 6.4 Her X-1
255.9625 -37.8264 1.6 36.8 -133.3 9.7998 7.2 1.6 4U 1700-377
256.4078 -36.2886 7.2 35.4 -132.2 2.0676 1.6 8.2 GX 349+2
263.0222 -24.7839 2.8 22.9 -126.3 3.5298 4.1 2.4 GX 1+4
264.7922 -44.4655 4.4 39.4 -148.0 3.6417 2.6 2.3 4U 1735-44
268.4454 -1.5843 13.2 10.6 -43.8 -0.6086 -0.9 9.2 SW J1753.5-0127
270.3043 -25.0208 3.0 19.6 -142.2 3.1505 3.9 3.7 GX 5-1
270.1664 -25.8348 4.8 20.4 -142.8 1.8781 2.4 9.2 GRS 1758-258
273.8919 -13.9550 4.3 8.1 -135.4 2.2824 2.7 8.2 GX 17+2
275.8606 -30.4614 4.6 23.8 -158.6 2.0059 2.5 6.6 H1820-303
285.0300 -25.0085 43.0 19.6 177.3 -0.2250 -0.3 5.3 HT1900.1-2455
288.8264 10.8035 165.2 20.7 49.8 0.0672 0.1 8.7 GRS 1915+105
299.5980 35.2207 3.2 46.8 42.2 9.1569 3.6 1.2 Cyg X-1
263.0961 -33.8647 3.1 30.3 -138.0 3.7892 3.7 5.6 GX 354-0
305.9980 19.9250 3.4 38.5 63.1 6.5040 3.5 ------ UNKNOWN
298.2612 36.0442 5.6 46.9 40.3 4.8537 2.0 ------ UNKNOWN
300.1422 -4.9416 3.8 22.4 104.1 3.0046 3.1 ------ UNKNOWN
Plot creation:
Thu Nov 12 11:02:09 EST 2020