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
277.6528 -6.7543 0.0138 13.9 -165.5 0.0607 14.0 TRIG_01032350
------------------------------------------
Foreground time interval of the image:
0.000 0.032 (delta_t = 0.032 [sec])
Background time interval of the image:
-239.404 0.000 (delta_t = 239.404 [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 0.032000
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 0.032000
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 0.032000
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 0.032 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.08172 ( -0.208605 0.235622 )
Norm@50keV : 4.81839E-02 ( -0.00958634 0.00943799 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.02 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.67e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.032 sec: 14.0707 ( -1.88324 1.88384 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92573e-08 ( -2.66261e-09 2.66994e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.457631 ( -1.83768 1.39588 )
Epeak [keV] : 26.0401 ( -5.29349 4.08588 )
Norm@50keV : 7.90180 ( -9.55099 132.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.36 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.81e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.032 sec: 14.9621 ( -1.9219 1.9231 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.1043e-08 ( -2.6983e-09 2.69917e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.032 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.577743 ( -1.14998 2.94564 )
beta : -9.99607 ( 9.99607 19.9771 )
Epeak [keV] : 26.3419 ( -2.90648 4.05436 )
Norm@50keV : 9.59308 ( -1.18566 91.4286 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.032 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] : 7.25820 (-0.755319 0.760472)
R^2/D10^2 : 26.8352 (-9.60626 16.0935)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.47 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.79e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.534e-09 1.485e-09
25- 50 1.106e-08 1.894e-09
50-150 2.085e-09 8.205e-10
15-150 2.068e-08 3.238e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 22.5224 (-3.56157 3.99489)
Norm : 164.411 (-34.3371 43.2832)
------------------------------------------------------------
#Fit statistic : Chi-Squared 41.96 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.32e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.964e-09 1.285e-09
25- 50 8.566e-09 1.256e-09
50-150 3.110e-09 1.042e-09
15-150 2.064e-08 2.902e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.92368 (-1.90197 6.09429)
R1^2/D10^2 : 5630.63 (-6609.06 -6609.06)
kT2 [keV] : 7.61905 (-0.902716 -7.60921)
R2^2/D10^2 : 20.6695 (-20.9051 14.3673)
------------------------------------------------------------
#Fit statistic : Chi-Squared 35.71 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.80e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.849e-09 2.532e-09
25- 50 1.075e-08 3.016e-09
50-150 2.391e-09 1.049e-09
15-150 2.099e-08 5.843e-09
Peak spectrum fit
Power-law model
Time interval is from -0.482 sec. to 0.518 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.61676 ( -0.501498 0.622494 )
Norm@50keV : 2.94373E-03 ( -0.00132831 0.00140256 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 65.16 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.14e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.622188 ( -0.169997 0.170815 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.04406e-08 ( -9.98209e-09 1.09917e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.482 sec. to 0.518 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.16496 ( 2.2598 3.2806 )
Epeak [keV] : 30.0094 ( -8.93608 6.28103 )
Norm@50keV : 16.4419 ( -15.7908 312650 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.40 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.87e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.603367 ( -0.172765 0.167487 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72435e-08 ( -7.3087e-09 7.8221e-09 ) ergs/cm2
Band function
Time interval is from -0.482 sec. to 0.518 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.27282 ( -5.42211 -4.35295 )
beta : -9.37167 ( 9.37166 19.3205 )
Epeak [keV] : 30.3072 ( -5.14591 4.97232 )
Norm@50keV : 18.5497 ( -18.5523 104.057 )
------------------------------------------------------------
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] : 7.38200 (-1.42588 1.66399)
R^2/D10^2 : 1.06879 (-0.619887 1.5252)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.50 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.20e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.854e-09 5.386e-09
25- 50 1.493e-08 7.465e-09
50-150 2.987e-09 2.360e-09
15-150 2.777e-08 1.687e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 26.1920 (-10.1316 19.1055)
Norm : 5.92114 (-2.40597 4.19599)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.09e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.117e-08 4.907e-09
25- 50 1.179e-08 6.314e-09
50-150 5.361e-09 4.583e-09
15-150 2.831e-08 1.400e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.03997 (-2.01605 11.5993)
R1^2/D10^2 : 92.2868 (-108.824 -108.824)
kT2 [keV] : 7.63597 (-1.60826 -7.62271)
R2^2/D10^2 : 0.893105 (-0.901784 1.59181)
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.56e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.008e-08 5.805e-09
25- 50 1.466e-08 9.055e-09
50-150 3.287e-09 2.440e-09
15-150 2.803e-08 1.660e-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: 3.08172 ( -0.208605 0.235622 )
Norm@50keV : 4.81839E-02 ( -0.00958634 0.00943799 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.02 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.67e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.032 sec: 14.0707 ( -1.88324 1.88384 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92573e-08 ( -2.66261e-09 2.66994e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.457631 ( -1.83768 1.39588 )
Epeak [keV] : 26.0401 ( -5.29349 4.08588 )
Norm@50keV : 7.90180 ( -9.55099 132.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.36 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.81e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.032 sec: 14.9621 ( -1.9219 1.9231 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.1043e-08 ( -2.6983e-09 2.69917e-09 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.577743 ( -1.14998 2.94564 )
beta : -9.99607 ( 9.99607 19.9771 )
Epeak [keV] : 26.3419 ( -2.90648 4.05436 )
Norm@50keV : 9.59308 ( -1.18566 91.4286 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.032 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) = 6.37e-09
S(50-100 keV) = 3.01e-09
T90 vs. Hardness ratio plot
T90 = 0.0279998779296875 sec.
Hardness ratio (energy fluence ratio) = 0.472527
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.05015
Count Ratio (50-100 keV) / (15-25 keV) = 0.209191
Mask shadow pattern
IMX = -2.395436999374217E-01, IMY = 6.185366479874393E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-239.404000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9848 -15.6287 0.3 26.5 87.1 17.9115 34.2 0.8 Sco X-1
255.8606 -37.9675 38.3 23.3 27.5 0.1211 0.3 9.5 4U 1700-377
256.5423 -36.4994 4.5 21.8 29.1 0.9735 2.6 6.9 GX 349+2
263.0399 -24.7660 5.3 10.1 50.9 0.7592 2.1 2.1 GX 1+4
264.7438 -44.4560 62.9 25.6 5.6 0.0745 0.2 0.4 4U 1735-44
268.4661 -1.4897 11.6 18.6 160.0 0.3688 1.0 6.3 SW J1753.5-0127
270.1418 -25.0540 18.5 5.8 14.4 0.2317 0.6 7.9 GX 5-1
270.3200 -25.7726 5.0 6.4 10.6 0.9205 2.3 2.0 GRS 1758-258
273.9791 -14.0279 3.3 5.9 -173.1 1.1457 3.5 1.6 GX 17+2
275.7946 -30.5064 15.1 11.2 -22.1 0.2540 0.8 10.7 H1820-303
285.0358 -24.9213 20.0 12.7 -70.9 0.1896 0.6 0.0 HT1900.1-2455
288.8883 10.8487 6.7 34.6 -158.1 0.7626 1.7 7.9 GRS 1915+105
262.9942 -33.8238 3.1 16.4 21.6 1.3323 3.7 0.7 GX 354-0
224.3091 -54.4717 3.1 50.3 26.9 5.4441 3.8 ------ UNKNOWN
250.9675 -12.6056 3.2 21.8 98.4 1.6904 3.6 ------ UNKNOWN
255.6792 -48.7908 2.2 32.1 13.7 2.7658 5.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.032000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1497 -15.5478 8.6 26.4 87.4 0.0094 1.3 11.3 Sco X-1
255.9690 -37.6869 9.4 23.0 27.8 0.0064 1.2 9.5 4U 1700-377
256.6097 -36.4376 315.4 21.8 29.1 0.0002 0.0 8.5 GX 349+2
263.1496 -24.8751 10.2 10.1 50.1 -0.0051 -1.1 10.9 GX 1+4
264.5834 -44.3403 10.2 25.5 5.9 0.0056 1.1 9.5 4U 1735-44
268.4636 -1.3143 32.7 18.8 160.1 0.0016 0.4 10.1 SW J1753.5-0127
270.4705 -24.9521 0.0 5.6 12.0 0.0081 1.9 12.7 GX 5-1
270.2920 -25.5902 7.9 6.2 11.3 -0.0064 -1.5 9.2 GRS 1758-258
274.1555 -14.0793 6.0 5.9 -171.4 -0.0082 -1.9 9.1 GX 17+2
275.8211 -30.2080 8.5 10.9 -22.7 0.0058 1.4 11.0 H1820-303
284.9797 -24.8558 11.0 12.6 -71.1 0.0047 1.0 4.9 HT1900.1-2455
288.8286 11.0210 17.3 34.7 -158.3 -0.0037 -0.7 4.9 GRS 1915+105
262.8573 -33.9632 6.0 16.6 21.7 -0.0089 -1.9 10.1 GX 354-0
262.4490 10.6902 2.4 32.0 153.8 0.0297 4.9 ------ UNKNOWN
253.9701 -42.5010 2.1 27.6 23.0 0.0319 5.6 ------ UNKNOWN
277.6528 -6.7543 0.8 13.9 -165.5 0.0606 14.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
44.496590 962.638100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9859 -15.6442 0.5 33.2 60.0 62.7767 24.8 0.4 Sco X-1
254.3802 35.2028 11.0 47.3 142.3 5.0215 1.0 9.2 Her X-1
255.9744 -37.8583 117.0 36.8 17.5 0.1881 0.1 1.0 4U 1700-377
256.4338 -36.3060 3.9 35.3 18.6 5.1445 2.9 7.0 GX 349+2
263.1116 -24.7072 2.6 22.7 24.5 5.0765 4.4 6.0 GX 1+4
264.7429 -44.4500 18.4 39.3 2.9 1.1016 0.6 0.0 4U 1735-44
268.1893 -1.5654 0.0 10.8 106.8 -1.6517 -1.6 12.7 SW J1753.5-0127
270.4733 -24.9679 0.0 19.5 8.2 1.0063 0.9 12.3 GX 5-1
270.3364 -25.7491 3.7 20.2 7.7 3.5970 3.1 1.9 GRS 1758-258
274.0182 -13.9556 4.2 8.0 14.4 3.2467 2.7 4.9 GX 17+2
275.9120 -30.2466 5.5 23.5 -7.9 2.2291 2.1 7.3 H1820-303
284.9445 -24.8220 46.9 19.4 -32.0 -0.2987 -0.2 7.7 HT1900.1-2455
288.8041 10.9532 87.0 20.9 -159.5 -0.1598 -0.1 0.6 GRS 1915+105
299.4937 35.2423 8.1 46.8 -167.0 3.2124 1.4 5.3 Cyg X-1
308.0502 40.9710 8.1 55.3 -163.9 5.0109 1.4 2.9 Cyg X-3
262.8439 -33.7804 7.0 30.3 13.2 2.5564 1.7 7.9 GX 354-0
272.0591 20.5777 3.6 27.9 157.1 4.2667 3.2 ------ UNKNOWN
246.8597 -57.4303 4.3 56.1 7.8 23.6534 2.7 ------ UNKNOWN
255.7534 -48.8230 2.1 46.0 8.3 11.9312 5.4 ------ UNKNOWN
292.8542 49.7322 3.2 58.0 179.9 22.1888 3.8 ------ UNKNOWN
293.1793 49.7719 3.8 58.1 -179.9 20.9624 3.6 ------ UNKNOWN
UNKNOWN
Plot creation:
Sun Feb 14 03:18:16 EST 2021