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
274.5154 -16.1255 0.0258 16.9 -154.2 0.0169 7.5 TRIG_00960986
------------------------------------------
Foreground time interval of the image:
0.000 0.008 (delta_t = 0.008 [sec])
Background time interval of the image:
-30.415 -7.916 (delta_t = 22.499 [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 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.17110 ( -0.58126 0.671666 )
Norm@50keV : 2.78308E-02 ( -0.0140239 0.0145754 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.91 using 59 PHA bins.
# Reduced chi-squared = 0.9108 for 57 degrees of freedom
# Null hypothesis probability = 6.657791e-01
Photon flux (15-150 keV) in 0.008 sec: 8.69093 ( -3.09553 3.09668 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.90863e-09 ( -1.04496e-09 1.05163e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 8.51552E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.51 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 56 degrees of freedom
# Null hypothesis probability = 2.561267e-01
Photon flux (15-150 keV) in 0.008 sec: 13.4320 13.4338 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.88671e-13 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.85986 ( 3.67776 8.85986 )
beta : -3.17048 ( -0.672604 0.581498 )
Epeak [keV] : 55.1483 ( -55.1483 -55.1483 )
Norm@50keV : 3.78412 ( -1.90629 1.98083 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.91 using 59 PHA bins.
# Reduced chi-squared = 0.9439 for 55 degrees of freedom
# Null hypothesis probability = 5.932689e-01
Photon flux (15-150 keV) in 0.008 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] : 5.48017 (-0.823942 0.877581)
R^2/D10^2 : 69.2398 (-38.6701 78.8031)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.20 using 59 PHA bins.
# Reduced chi-squared = 0.7579 for 57 degrees of freedom
# Null hypothesis probability = 9.116014e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.918e-09 8.978e-10
25- 50 1.560e-09 8.440e-10
50-150 9.702e-11 8.491e-11
15-150 3.574e-09 1.822e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.7933 (-5.00842 8.01109)
Norm : 167.791 (-88.4401 140.748)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.73 using 59 PHA bins.
# Reduced chi-squared = 0.8549 for 57 degrees of freedom
# Null hypothesis probability = 7.740952e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.654e-09 7.102e-10
25- 50 1.184e-09 5.916e-10
50-150 2.312e-10 1.837e-10
15-150 3.070e-09 1.426e-09
Double BB
R1^2/D10^2 : 74.8153 (-38.7153 78.7577)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 3.99879E-04 (-0.000397652 -0.000397652)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.20 using 59 PHA bins.
#Fit statistic : Chi-Squared = 42.62 using 59 PHA bins.
#Fit statistic : Chi-Squared = 42.23 using 59 PHA bins.
# Reduced chi-squared = 0.7855 for 55 degrees of freedom
# Reduced chi-squared = 0.7749 for 55 degrees of freedom
# Reduced chi-squared = 0.7679 for 55 degrees of freedom
# Null hypothesis probability = 8.754517e-01
# Null hypothesis probability = 8.883213e-01
# Null hypothesis probability = 8.964846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.17110 ( -0.58126 0.671666 )
Norm@50keV : 2.78308E-02 ( -0.0140239 0.0145754 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.91 using 59 PHA bins.
# Reduced chi-squared = 0.9108 for 57 degrees of freedom
# Null hypothesis probability = 6.657791e-01
Photon flux (15-150 keV) in 0.008 sec: 8.69093 ( -3.09553 3.09668 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.90863e-09 ( -1.04496e-09 1.05163e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 8.51552E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.51 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 56 degrees of freedom
# Null hypothesis probability = 2.561267e-01
Photon flux (15-150 keV) in 0.008 sec: 13.4320 13.4338 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.88671e-13 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.85986 ( 3.67776 8.85986 )
beta : -3.17048 ( -0.672604 0.581498 )
Epeak [keV] : 55.1483 ( -55.1483 -55.1483 )
Norm@50keV : 3.78412 ( -1.90629 1.98083 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.91 using 59 PHA bins.
# Reduced chi-squared = 0.9439 for 55 degrees of freedom
# Null hypothesis probability = 5.932689e-01
Photon flux (15-150 keV) in 0.008 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] : 5.48017 (-0.823942 0.877581)
R^2/D10^2 : 69.2398 (-38.6701 78.8031)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.20 using 59 PHA bins.
# Reduced chi-squared = 0.7579 for 57 degrees of freedom
# Null hypothesis probability = 9.116014e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.918e-09 1.059e-09
25- 50 1.560e-09 8.449e-10
50-150 9.702e-11 7.825e-11
15-150 3.574e-09 1.721e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.7933 (-5.00842 8.01109)
Norm : 167.791 (-88.4401 140.748)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.73 using 59 PHA bins.
# Reduced chi-squared = 0.8549 for 57 degrees of freedom
# Null hypothesis probability = 7.740952e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.654e-09 7.983e-10
25- 50 1.184e-09 6.398e-10
50-150 2.312e-10 1.996e-10
15-150 3.070e-09 1.409e-09
Double BB
R1^2/D10^2 : 74.8153 (-38.7153 78.7577)
kT2 [keV] : 200.000 (-200 -200)
R2^2/D10^2 : 3.99879E-04 (-0.000397652 -0.000397652)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.20 using 59 PHA bins.
#Fit statistic : Chi-Squared = 42.62 using 59 PHA bins.
#Fit statistic : Chi-Squared = 42.23 using 59 PHA bins.
# Reduced chi-squared = 0.7855 for 55 degrees of freedom
# Reduced chi-squared = 0.7749 for 55 degrees of freedom
# Reduced chi-squared = 0.7679 for 55 degrees of freedom
# Null hypothesis probability = 8.754517e-01
# Null hypothesis probability = 8.883213e-01
# Null hypothesis probability = 8.964846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 3.17110 ( -0.58126 0.671666 )
Norm@50keV : 2.78308E-02 ( -0.0140239 0.0145754 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.91 using 59 PHA bins.
# Reduced chi-squared = 0.9108 for 57 degrees of freedom
# Null hypothesis probability = 6.657791e-01
Photon flux (15-150 keV) in 0.008 sec: 8.69093 ( -3.09553 3.09668 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.90863e-09 ( -1.04496e-09 1.05163e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 8.51552E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.51 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 56 degrees of freedom
# Null hypothesis probability = 2.561267e-01
Photon flux (15-150 keV) in 0.008 sec: 13.4320 13.4338 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.88671e-13 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.85986 ( 3.67776 8.85986 )
beta : -3.17048 ( -0.672604 0.581498 )
Epeak [keV] : 55.1483 ( -55.1483 -55.1483 )
Norm@50keV : 3.78412 ( -1.90629 1.98083 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.91 using 59 PHA bins.
# Reduced chi-squared = 0.9439 for 55 degrees of freedom
# Null hypothesis probability = 5.932689e-01
Photon flux (15-150 keV) in 0.008 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) = 9.53e-10
S(50-100 keV) = 4.24e-10
T90 vs. Hardness ratio plot
T90 = 0.00800001621246338 sec.
Hardness ratio (energy fluence ratio) = 0.444911
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.62228
Count Ratio (50-100 keV) / (15-25 keV) = 0.154559
Mask shadow pattern
IMX = -2.742536591115584E-01, IMY = 1.327154829047476E-01
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:
-30.415410 -7.916000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9814 -15.6525 0.5 25.0 121.8 2.0460 21.6 0.7 Sco X-1
255.9895 -37.7927 3.8 10.7 47.8 0.2017 3.0 3.1 4U 1700-377
256.4115 -36.3557 4.3 9.6 53.8 0.1718 2.7 4.2 GX 349+2
262.9227 -24.8753 4.7 7.1 152.1 -0.1668 -2.4 9.1 GX 1+4
264.7741 -44.3504 4.6 13.1 2.8 0.1688 2.5 6.1 4U 1735-44
268.2830 -1.5640 297.8 29.8 -178.2 0.0033 0.0 8.4 SW J1753.5-0127
270.1201 -24.9281 0.0 7.2 -153.7 0.0653 1.1 12.7 GX 5-1
270.1363 -25.8916 0.0 6.4 -149.7 0.0227 0.4 12.6 GRS 1758-258
273.8612 -14.1279 5.9 18.5 -158.6 0.1293 2.0 10.1 GX 17+2
276.0989 -30.3638 13.0 8.4 -96.3 -0.0597 -0.9 9.0 H1820-303
285.0254 -24.9420 19.9 17.7 -108.7 -0.0414 -0.6 1.4 HT1900.1-2455
288.7139 11.0959 54.2 47.6 -151.7 0.0341 0.2 10.3 GRS 1915+105
263.0133 -33.6859 9.7 3.6 47.0 0.0836 1.2 9.0 GX 354-0
266.1703 5.3776 2.4 36.7 177.6 0.4636 4.8 ------ UNKNOWN
274.2684 26.3667 2.3 58.2 -173.8 2.0078 5.1 ------ UNKNOWN
315.7591 -33.2305 2.3 41.4 -75.9 1.3673 5.0 ------ UNKNOWN
317.3907 -35.9989 2.9 42.3 -71.5 1.0033 3.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9907 -15.6852 5.8 25.0 121.8 0.0064 2.0 2.8 Sco X-1
256.0106 -37.7081 8.5 10.6 48.2 -0.0032 -1.4 8.2 4U 1700-377
256.4238 -36.3795 6.3 9.6 53.7 -0.0043 -1.8 2.7 GX 349+2
262.9120 -24.5901 12.3 7.4 152.9 -0.0022 -0.9 10.7 GX 1+4
264.6421 -44.5961 7.6 13.3 3.1 0.0035 1.5 9.8 4U 1735-44
268.2416 -1.2984 0.0 30.1 -178.3 -0.0090 -3.2 12.0 SW J1753.5-0127
270.1615 -24.9284 4.2 7.2 -153.5 -0.0064 -2.7 11.2 GX 5-1
270.4009 -25.8934 5.2 6.5 -147.9 -0.0053 -2.2 10.5 GRS 1758-258
273.8608 -14.0793 117.6 18.6 -158.7 0.0002 0.1 8.8 GX 17+2
275.9521 -30.3695 4.6 8.3 -96.4 -0.0057 -2.5 1.4 H1820-303
284.9627 -24.8196 6.2 17.7 -109.2 -0.0048 -1.9 7.3 HT1900.1-2455
288.7885 10.8054 5.0 47.3 -151.5 -0.0125 -2.3 8.4 GRS 1915+105
263.0041 -33.6854 13.9 3.7 47.1 0.0019 0.8 9.0 GX 354-0
274.5154 -16.1255 1.5 16.9 -154.2 0.0169 7.5 ------ UNKNOWN
319.3883 -41.0391 2.4 43.2 -63.8 0.0432 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
47.584620 97.054000
98.084000 132.514000
134.084000 242.132300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9869 -15.6450 0.4 28.3 87.3 14.0913 31.0 0.5 Sco X-1
255.9883 -37.8295 1.2 27.1 33.8 3.1386 9.6 0.9 4U 1700-377
256.2712 -36.3316 3.6 25.9 35.7 1.0104 3.2 9.6 GX 349+2
263.1670 -24.8511 29.0 13.7 49.1 -0.1170 -0.4 10.7 GX 1+4
264.5616 -44.3940 11.4 29.5 15.0 0.3549 1.0 8.5 4U 1735-44
268.4118 -1.6013 5.0 15.7 157.6 0.6810 2.3 9.3 SW J1753.5-0127
270.1391 -25.0981 2.8 9.8 24.0 1.1404 4.2 8.0 GX 5-1
270.1394 -25.6648 14.1 10.4 22.7 0.2494 0.9 10.0 GRS 1758-258
274.1609 -14.1070 3.1 2.0 172.4 1.0130 3.7 10.0 GX 17+2
275.9251 -30.2868 5.0 14.2 -4.7 0.6827 2.3 4.8 H1820-303
285.0104 -24.9311 61.1 13.2 -46.0 -0.0522 -0.2 1.5 HT1900.1-2455
288.7906 10.8206 6.9 30.4 -150.8 -0.5801 -1.7 7.5 GRS 1915+105
299.5448 35.2116 251.6 56.6 -155.0 0.0874 0.0 2.3 Cyg X-1
262.8745 -33.9733 4.7 20.7 28.6 0.7310 2.5 10.1 GX 354-0
253.4207 -31.5911 2.4 24.6 47.8 1.5036 4.7 ------ UNKNOWN
292.2493 -50.9160 2.5 37.6 -17.9 1.5823 4.6 ------ UNKNOWN
302.8980 -26.7736 3.3 28.4 -62.7 1.1810 3.6 ------ UNKNOWN
315.8217 -36.3824 4.1 41.8 -52.4 1.8474 2.8 ------ UNKNOWN
322.4739 -48.2923 3.8 50.6 -39.3 3.5685 3.0 ------ UNKNOWN
312.9179 5.7010 3.5 43.9 -116.2 4.6390 3.3 ------ UNKNOWN
Plot creation:
Fri Mar 13 20:58:59 EDT 2020