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
274.3604 -16.7212 0.0205 15.9 57.4 0.4222 9.4 TRIG_00765081
------------------------------------------
Foreground time interval of the image:
-4.440 5.452 (delta_t = 9.892 [sec])
Background time interval of the image:
-239.408 -4.440 (delta_t = 234.968 [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 2.048000
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 2.048000
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 2.048000
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 -4.440 sec. to 5.452 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.69081 ( -0.684466 0.787719 )
Norm@50keV : 2.98795E-04 ( -0.000169313 0.000278157 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.39 using 59 PHA bins.
# Reduced chi-squared = 1.252 for 57 degrees of freedom
# Null hypothesis probability = 9.510986e-02
Photon flux (15-150 keV) in 9.892 sec: 0.344333 ( -0.0585596 0.0586694 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.12062e-07 ( -2.16421e-08 2.28682e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -4.440 sec. to 5.452 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 4.33723E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 131.27 using 59 PHA bins.
# Reduced chi-squared = 2.3441 for 56 degrees of freedom
# Null hypothesis probability = 5.544671e-08
Photon flux (15-150 keV) in 9.892 sec: 0.342283 ( -0.056622 0.056683 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.03964e-07 ( -1.8563e-08 1.24382e-08 ) ergs/cm2
Band function
Time interval is from -4.440 sec. to 5.452 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.74365 ( 8.74365 8.74365 )
beta : -4.69081 ( -0.787757 0.684487 )
Epeak [keV] : 2.36415 ( -2.36415 -2.36415 )
Norm@50keV : 4.06105E-02 ( -0.0230094 0.0378055 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.39 using 59 PHA bins.
# Reduced chi-squared = 1.298 for 55 degrees of freedom
# Null hypothesis probability = 6.782724e-02
Photon flux (15-150 keV) in 9.892 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] : 2.95561 (-0.436976 0.528349)
R^2/D10^2 : 53.9013 (-53.9013 103.128)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.18 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 57 degrees of freedom
# Null hypothesis probability = 1.127629e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.081e-08 4.779e-08
25- 50 1.256e-08 7.691e-09
50-150 1.791e-11 1.845e-11
15-150 1.034e-07 5.683e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.11901 (-1.41593 2.05132)
Norm : 40.6314 (-22.2818 55.3815)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.30 using 59 PHA bins.
# Reduced chi-squared = 1.233 for 57 degrees of freedom
# Null hypothesis probability = 1.108847e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.828e-08 4.020e-08
25- 50 1.707e-08 9.538e-09
50-150 2.233e-10 2.054e-10
15-150 1.056e-07 4.824e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.89994 (-0.429502 0.51185)
R1^2/D10^2 : 60.1521 (-39.8198 113.9)
kT2 [keV] : 88.2880 (-66.068 -88.6246)
R2^2/D10^2 : 9.04774E-05 (-8.13133e-05 0.00182186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.39 using 59 PHA bins.
# Reduced chi-squared = 1.171 for 55 degrees of freedom
# Null hypothesis probability = 1.809556e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.030e-08 4.929e-08
25- 50 1.538e-08 8.291e-09
50-150 6.966e-08 5.455e-08
15-150 1.753e-07 9.532e-08
Peak spectrum fit
Power-law model
Time interval is from 0.820 sec. to 1.820 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.78722 ( -0.936522 1.21475 )
Norm@50keV : 1.21308E-03 ( -0.000875977 0.00149267 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.56 using 59 PHA bins.
# Reduced chi-squared = 0.8519 for 57 degrees of freedom
# Null hypothesis probability = 7.793867e-01
Photon flux (15-150 keV) in 1 sec: 0.622814 ( -0.170315 0.170784 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.29969e-08 ( -7.72446e-09 9.25585e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.820 sec. to 1.820 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.25712 ( 9.27415 10.227 )
Epeak [keV] : 16.8812 ( -3.63041 2.49755 )
Norm@50keV : 1.56634E+08 ( -1.72574e+08 4.46323e+09 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.87 using 59 PHA bins.
# Reduced chi-squared = 0.8549 for 56 degrees of freedom
# Null hypothesis probability = 7.717548e-01
Photon flux (15-150 keV) in 1 sec: 0.616556 ( -0.164942 0.175889 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.29953e-08 ( -9.5514e-09 9.2232e-09 ) ergs/cm2
Band function
Time interval is from 0.820 sec. to 1.820 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.14141 ( 1.68739 1.68739 )
beta : -4.78535 ( 4.13738 1.2353 )
Epeak [keV] : 14.9173 ( -3.12491 75.4235 )
Norm@50keV : 7738.95 ( -7753.28 1.4923e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.69 using 59 PHA bins.
# Reduced chi-squared = 0.8670 for 55 degrees of freedom
# Null hypothesis probability = 7.474594e-01
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] : 3.36156 (-0.741213 0.957423)
R^2/D10^2 : 42.3491 (-42.3491 148.586)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.44 using 59 PHA bins.
# Reduced chi-squared = 0.8498 for 57 degrees of freedom
# Null hypothesis probability = 7.829874e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.552e-08 8.700e-09
25- 50 3.311e-09 2.225e-09
50-150 1.275e-11 1.450e-11
15-150 1.884e-08 1.088e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.89114 (-2.9065 6.38477)
Norm : 35.3108 (-35.3108 88.4764)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.98 using 59 PHA bins.
# Reduced chi-squared = 0.8592 for 57 degrees of freedom
# Null hypothesis probability = 7.662961e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.483e-08 8.505e-09
25- 50 4.504e-09 3.013e-09
50-150 1.517e-10 1.698e-10
15-150 1.948e-08 1.162e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.15734 (-0.732877 0.892852)
R1^2/D10^2 : 57.8114 (-43.6478 97.4071)
kT2 [keV] : 29.2326 (-17.6609 -29.2668)
R2^2/D10^2 : 2.97377E-03 (-0.00293987 0.0348628)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.65 using 59 PHA bins.
# Reduced chi-squared = 0.7937 for 55 degrees of freedom
# Null hypothesis probability = 8.648131e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.515e-08 8.995e-09
25- 50 5.025e-09 2.708e-09
50-150 1.503e-08 1.017e-08
15-150 3.520e-08 1.777e-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: 4.69081 ( -0.684466 0.787719 )
Norm@50keV : 2.98795E-04 ( -0.000169313 0.000278157 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.39 using 59 PHA bins.
# Reduced chi-squared = 1.252 for 57 degrees of freedom
# Null hypothesis probability = 9.510986e-02
Photon flux (15-150 keV) in 9.892 sec: 0.344333 ( -0.0585596 0.0586694 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.12062e-07 ( -2.16421e-08 2.28682e-08 ) 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 : 4.33723E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 131.27 using 59 PHA bins.
# Reduced chi-squared = 2.3441 for 56 degrees of freedom
# Null hypothesis probability = 5.544671e-08
Photon flux (15-150 keV) in 9.892 sec: 0.342283 ( -0.056622 0.056683 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.03964e-07 ( -1.8563e-08 1.24382e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.74365 ( 8.74365 8.74365 )
beta : -4.69081 ( -0.787757 0.684487 )
Epeak [keV] : 2.36415 ( -2.36415 -2.36415 )
Norm@50keV : 4.06105E-02 ( -0.0230094 0.0378055 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.39 using 59 PHA bins.
# Reduced chi-squared = 1.298 for 55 degrees of freedom
# Null hypothesis probability = 6.782724e-02
Photon flux (15-150 keV) in 9.892 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) = 2.40e-08
S(50-100 keV) = 3.72e-09
T90 vs. Hardness ratio plot
T90 = 9.33999997377396 sec.
Hardness ratio (energy fluence ratio) = 0.155
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.165018
Count Ratio (50-100 keV) / (15-25 keV) = 0.108287
Mask shadow pattern
IMX = 1.532574817352014E-01, IMY = -2.395353289469724E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
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:
-239.408000 -4.440000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9852 -15.6470 0.2 16.8 -62.7 18.0625 57.7 0.5 Sco X-1
255.7868 -37.9744 98.3 13.4 -169.9 -0.0363 -0.1 12.3 4U 1700-377
256.4606 -36.4986 5.9 11.8 -170.4 0.6041 2.0 4.7 GX 349+2
262.9158 -24.8782 243.1 2.8 83.7 0.0145 0.0 9.4 GX 1+4
264.9440 -44.3927 3.4 19.8 165.4 1.0558 3.4 9.3 4U 1735-44
268.3068 -1.3029 9.2 25.1 16.4 0.3933 1.3 9.7 SW J1753.5-0127
270.3579 -25.2264 3.1 9.5 89.6 1.1150 3.7 9.7 GX 5-1
270.4671 -25.5934 0.0 9.6 91.8 0.6250 2.1 12.6 GRS 1758-258
274.0198 -14.1140 7.3 17.2 49.4 0.4919 1.6 4.7 GX 17+2
276.0412 -30.5051 4.1 15.3 110.7 0.9348 2.8 10.2 H1820-303
285.1819 -24.7650 0.0 22.9 90.9 -0.5881 -1.4 12.3 HT1900.1-2455
288.7222 11.0943 31.3 45.8 37.5 0.3784 0.4 10.0 GRS 1915+105
263.0024 -33.7738 10.7 9.2 159.5 0.3206 1.1 3.7 GX 354-0
193.5209 -62.7673 3.2 57.1 -153.9 6.6986 3.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-4.440000 5.452000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8110 -15.7024 5.0 16.9 -63.2 -0.1100 -2.3 10.4 Sco X-1
256.1889 -37.7104 0.0 13.1 -170.9 -0.0079 -0.2 12.5 4U 1700-377
256.5446 -36.4550 12.7 11.8 -170.7 0.0360 0.9 5.6 GX 349+2
262.8406 -24.8066 3.7 2.7 82.1 0.1254 3.1 9.9 GX 1+4
264.9423 -44.4308 11.8 19.8 165.4 -0.0417 -1.0 8.6 4U 1735-44
268.2308 -1.4533 3.8 24.9 16.3 -0.1337 -3.1 8.2 SW J1753.5-0127
270.1201 -25.2285 0.0 9.3 89.6 0.0735 1.7 12.6 GX 5-1
270.4559 -25.7619 6.5 9.6 92.8 -0.0821 -1.9 8.4 GRS 1758-258
274.1516 -13.8913 0.0 17.5 49.2 0.0027 0.1 12.2 GX 17+2
275.7894 -30.4611 7.0 15.1 110.8 -0.0710 -1.7 9.0 H1820-303
284.8806 -25.0058 19.2 22.6 91.4 0.0315 0.6 9.9 HT1900.1-2455
288.8275 10.8599 4.2 45.7 37.8 0.3366 2.7 5.4 GRS 1915+105
262.8165 -33.7239 16.0 9.1 160.4 -0.0294 -0.7 10.9 GX 354-0
288.6360 17.6823 2.4 51.1 32.3 0.9815 4.8 ------ UNKNOWN
274.3604 -16.7212 1.2 15.9 57.4 0.4222 9.4 ------ UNKNOWN
243.1334 17.2773 2.4 45.3 -26.6 0.3343 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
67.992630 129.572000
132.592000 331.542000
336.592000 644.043600
645.592000 786.772000
787.592000 962.665800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9908 -15.6444 0.2 28.2 -100.8 63.5107 48.8 0.7 Sco X-1
254.3442 35.3910 95.8 55.5 -28.5 0.4211 0.1 6.3 Her X-1
255.9831 -37.8532 0.7 26.6 -154.9 17.1477 17.1 0.6 4U 1700-377
256.5849 -36.3681 6.1 25.2 -153.4 1.8458 1.9 7.9 GX 349+2
262.8219 -24.8336 6.0 13.5 -137.6 1.6085 1.9 11.5 GX 1+4
264.7486 -44.4487 9.3 28.9 -174.4 1.1110 1.2 0.3 4U 1735-44
268.2518 -1.2848 0.0 16.6 -30.6 0.1003 0.1 12.2 SW J1753.5-0127
270.3073 -25.0590 1.7 9.2 -165.0 5.3926 6.9 1.7 GX 5-1
270.3841 -25.7689 7.6 9.8 -167.2 1.1854 1.5 4.7 GRS 1758-258
274.0054 -14.0358 7.6 2.7 -16.0 1.2709 1.5 0.0 GX 17+2
275.8545 -30.4306 4.2 13.8 165.9 2.2989 2.8 5.3 H1820-303
284.8563 -25.0561 0.0 12.9 123.4 2.2400 2.7 12.7 HT1900.1-2455
288.7272 10.9523 3.0 31.1 19.4 3.9642 3.8 4.2 GRS 1915+105
262.8044 -33.8701 5.9 20.0 -159.7 -1.7734 -1.9 9.4 GX 354-0
267.4756 -5.7339 3.2 12.9 -41.0 2.7449 3.6 ------ UNKNOWN
259.8612 -24.9779 1.9 15.8 -132.5 5.6316 6.2 ------ UNKNOWN
239.2962 9.5351 2.2 43.5 -64.1 18.7111 5.3 ------ UNKNOWN
242.4484 19.8383 4.3 48.2 -50.6 10.6072 2.7 ------ UNKNOWN
Plot creation:
Sat Jul 29 17:56:47 EDT 2017