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
244.8354 -15.4051 0.0330 35.6 169.2 1.9858 5.8 TRIG_01216367
------------------------------------------
Foreground time interval of the image:
-61.188 -60.290 (delta_t = 0.898 [sec])
-60.000 128.780 (delta_t = 188.780 [sec])
Background time interval of the image:
-239.000 -61.188 (delta_t = 177.812 [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
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)
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
Multiple GTIs in the spectrum
tstart tstop
-61.188000 -60.290000
-60.000000 128.780000
130.000000 192.770000
194.000000 266.410000
267.000000 673.400000
681.000000 743.308000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.36951 ( -0.379055 0.382495 )
Norm@50keV : 4.09689E-05 ( -1.23089e-05 1.64481e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.26 using 59 PHA bins.
# Reduced chi-squared = 0.6888 for 57 degrees of freedom
# Null hypothesis probability = 9.648344e-01
Photon flux (15-150 keV) in 793.6 sec: 0.244965 ( -0.0223248 0.0224795 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.74036e-06 ( -4.80598e-07 4.8346e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-61.188000 -60.290000
-60.000000 128.780000
130.000000 192.770000
194.000000 266.410000
267.000000 673.400000
681.000000 743.308000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 9.80395E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 387.10 using 59 PHA bins.
# Reduced chi-squared = 6.9126 for 56 degrees of freedom
# Null hypothesis probability = 5.160187e-51
Photon flux (15-150 keV) in 793.6 sec: 0.238081 ( -0.025077 0.024504 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.53207e-06 ( -5.39323e-07 5.26839e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-61.188000 -60.290000
-60.000000 128.780000
130.000000 192.770000
194.000000 266.410000
267.000000 673.400000
681.000000 743.308000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.70372 ( 5.47979 8.70372 )
beta : -6.41025 ( -0.351801 0.413474 )
Epeak [keV] : 322.300 ( -322.3 -322.3 )
Norm@50keV : 5.35823E-03 ( -0.00154073 0.00237941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.29 using 59 PHA bins.
# Reduced chi-squared = 0.7144 for 55 degrees of freedom
# Null hypothesis probability = 9.457192e-01
Photon flux (15-150 keV) in 793.6 sec: 0.211873 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.52346e-06 ( -5.5179e-06 -2.73078e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.48428 (-0.157139 0.175839)
R^2/D10^2 : 121.584 (-53.1163 92.1864)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.00 using 59 PHA bins.
# Reduced chi-squared = 0.6141 for 57 degrees of freedom
# Null hypothesis probability = 9.904367e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.055e-06 8.039e-07
25- 50 3.622e-07 7.900e-08
50-150 1.076e-10 7.125e-11
15-150 5.418e-06 9.269e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.21593 (-0.383249 0.452003)
Norm : 107.403 (-41.0147 65.843)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.132e-06 8.376e-07
25- 50 4.293e-07 8.694e-08
50-150 8.730e-10 5.476e-10
15-150 5.562e-06 8.273e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.43236 (-0.822144 0.186195)
R1^2/D10^2 : 142.471 (-65.1151 5865.81)
kT2 [keV] : 14.4746 (-14.1679 -14.1679)
R2^2/D10^2 : 8.40798E-04 (-0.000877322 0.0302194)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.099e-06 1.071e-06
25- 50 4.462e-07 1.329e-07
50-150 1.586e-07 1.134e-07
15-150 5.704e-06 1.189e-06
Peak spectrum fit
Power-law model
Time interval is from 107.264 sec. to 108.264 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.44231 ( -0.995836 1.55234 )
Norm@50keV : 3.46337E-03 ( -0.00345481 0.00228663 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.11 using 59 PHA bins.
# Reduced chi-squared = 0.8791 for 57 degrees of freedom
# Null hypothesis probability = 7.291694e-01
Photon flux (15-150 keV) in 1 sec: 0.657054 ( -0.243743 0.243727 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.40653e-08 ( -1.68737e-08 1.87168e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 107.264 sec. to 108.264 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.90905 ( )
Epeak [keV] : 26.8591 ( )
Norm@50keV : 4.98546E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.84 using 59 PHA bins.
# Reduced chi-squared = 0.9079 for 56 degrees of freedom
# Null hypothesis probability = 6.698307e-01
Photon flux (15-150 keV) in 1 sec: 0.656621 ( -0.243673 0.243586 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.48216e-08 ( -1.7643e-08 1.79877e-08 ) ergs/cm2
Band function
Time interval is from 107.264 sec. to 108.264 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.98896 ( 9.98896 9.98896 )
beta : -2.44425 ( -1.54958 0.998416 )
Epeak [keV] : 9.06300 ( -9.063 -9.063 )
Norm@50keV : 0.470182 ( -0.469241 0.311105 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.11 using 59 PHA bins.
# Reduced chi-squared = 0.9111 for 55 degrees of freedom
# Null hypothesis probability = 6.616096e-01
Photon flux (15-150 keV) in 1 sec: 0.211873 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.17888 (-1.50697 2.76536)
R^2/D10^2 : 11.9193 (-11.9193 127.452)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.335e-08 8.405e-09
25- 50 5.450e-09 3.732e-09
50-150 8.578e-11 9.030e-11
15-150 1.888e-08 1.190e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 40.5001 (-35.7378 -41.6355)
Norm : 3.95519 (-2.34534 24.5008)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.129e-08 6.865e-09
25- 50 1.023e-08 7.095e-09
50-150 3.306e-09 2.982e-09
15-150 2.483e-08 1.634e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.67104 (-1.42923 2.0157)
R1^2/D10^2 : 21.2496 (-18.7163 374.897)
kT2 [keV] : 35.0413 (-20.3008 -35.0414)
R2^2/D10^2 : 2.78211E-03 (-0.0027401 0.0346643)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.304e-08 8.120e-09
25- 50 6.684e-09 3.580e-09
50-150 2.541e-08 1.670e-08
15-150 4.514e-08 2.667e-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: 5.36961 ( -0.479493 0.50367 )
Norm@50keV : 1.29038E-04 ( -4.99601e-05 7.08634e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.84 using 59 PHA bins.
# Reduced chi-squared = 0.7691 for 57 degrees of freedom
# Null hypothesis probability = 8.995067e-01
Photon flux (15-150 keV) in 189.7 sec: 0.284448 ( -0.0295639 0.0296267 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.68081e-06 ( -1.68967e-07 1.69038e-07 ) 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 : 2.21641E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 222.75 using 59 PHA bins.
# Reduced chi-squared = 3.9777 for 56 degrees of freedom
# Null hypothesis probability = 9.446286e-22
Photon flux (15-150 keV) in 189.7 sec: 0.282926 ( -0.030785 0.030187 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66249e-06 ( -2.87067e-07 1.8484e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.52668 ( -3.4956 -3.4956 )
beta : -5.99535 ( -2.31957 0.887712 )
Epeak [keV] : 11.9701 ( -11.6074 1.61433 )
Norm@50keV : 5087.76 ( -5771.54 37723.4 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.88 using 59 PHA bins.
# Reduced chi-squared = 0.7796 for 55 degrees of freedom
# Null hypothesis probability = 8.827820e-01
Photon flux (15-150 keV) in 189.7 sec: 0.211873 ( ) 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) = 5.86e-07
S(50-100 keV) = 2.84e-08
T90 vs. Hardness ratio plot
T90 = 693.959999918938 sec.
Hardness ratio (energy fluence ratio) = 0.0484642
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0794372
Count Ratio (50-100 keV) / (15-25 keV) = 0.0129367
Mask shadow pattern
IMX = -7.042360592718386E-01, IMY = -1.347453962925745E-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:
-239.000000 -61.188000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.4706 -60.5776 9.4 40.3 35.4 0.9263 1.2 5.3 Cen X-3
186.8307 -62.6007 27.2 32.3 35.2 0.2101 0.4 11.2 GX 301-2
245.0300 -15.5116 1.1 35.5 169.5 5.1369 11.0 8.3 Sco X-1
255.9567 -37.7634 3.7 15.6 -155.5 1.0952 3.1 5.0 4U 1700-377
256.6084 -36.5791 4.8 16.9 -155.8 0.8258 2.4 12.5 GX 349+2
263.1547 -24.7216 4.8 30.0 -155.8 1.0513 2.4 8.1 GX 1+4
264.7394 -44.5127 5.3 15.0 -119.3 0.7369 2.2 3.8 4U 1735-44
268.4173 -1.3501 4.3 53.7 -161.2 -2.8224 -2.7 6.8 SW J1753.5-0127
270.3688 -24.9626 2.3 32.8 -144.4 2.2469 5.0 8.4 GX 5-1
270.3365 -25.6001 3.2 32.2 -143.8 1.6317 3.7 8.8 GRS 1758-258
274.1197 -14.1801 4.3 43.9 -147.7 -1.7638 -2.7 10.9 GX 17+2
276.0723 -30.3896 12.5 31.2 -130.7 0.4594 0.9 7.7 H1820-303
284.9212 -25.0336 6.1 40.3 -126.1 1.4215 1.9 9.2 HT1900.1-2455
262.8552 -33.8195 6.1 21.8 -146.6 0.6637 1.9 6.7 GX 354-0
199.0726 -41.6324 3.1 32.1 77.5 2.5565 3.7 ------ UNKNOWN
81.9936 -72.7661 2.7 55.6 -5.2 5.3589 4.3 ------ UNKNOWN
258.1732 0.6501 2.8 53.0 -174.2 4.2010 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-61.188000 -60.290000
-60.000000 128.780000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.5151 -60.6740 6.5 40.3 35.3 -0.9724 -1.8 6.6 Cen X-3
186.4047 -62.7711 32.4 32.5 34.9 -0.1359 -0.4 6.9 GX 301-2
245.1048 -15.5822 1.8 35.5 169.6 -2.1548 -6.4 8.0 Sco X-1
255.9457 -37.6923 4.3 15.6 -155.7 0.6651 2.6 9.3 4U 1700-377
256.6185 -36.3478 3.7 17.1 -156.2 -0.7633 -3.2 9.9 GX 349+2
263.1531 -24.6993 4.7 30.0 -155.8 -0.7337 -2.5 8.3 GX 1+4
264.5192 -44.3112 0.0 15.0 -120.2 0.3064 1.2 12.7 4U 1735-44
268.4386 -1.3617 2.5 53.6 -161.2 3.7404 4.7 6.9 SW J1753.5-0127
270.2864 -25.0266 5.1 32.7 -144.5 -0.7317 -2.3 3.2 GX 5-1
270.4487 -25.7091 4.9 32.2 -143.6 -0.7475 -2.3 8.2 GRS 1758-258
274.0149 -14.1038 9.5 44.0 -147.9 0.5751 1.2 4.1 GX 17+2
275.7875 -30.2390 6.3 31.2 -131.3 0.6457 1.8 10.5 H1820-303
285.0681 -24.8861 18.9 40.5 -126.1 0.3365 0.6 2.7 HT1900.1-2455
262.8995 -33.9628 7.8 21.7 -146.3 0.3671 1.5 8.9 GX 354-0
Post-slew image of 15-350 keV band
Time interval of the image:
204.300600 266.410000
267.000000 673.400000
681.000000 687.600600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9891 -15.6371 0.6 0.0 -7.1 15.6771 18.1 0.6 Sco X-1
254.5700 35.3269 5.8 51.8 -180.0 -4.8780 -2.0 5.6 Her X-1
256.0207 -37.8434 1.5 24.3 -31.5 7.0586 7.7 1.6 4U 1700-377
256.4183 -36.4120 6.4 23.1 -33.9 1.6575 1.8 1.1 GX 349+2
263.0025 -24.7875 7.7 19.2 -68.5 1.6016 1.5 2.5 GX 1+4
264.8324 -44.4698 26.2 33.4 -36.0 0.4840 0.4 4.0 4U 1735-44
268.3635 -1.5943 7.4 27.0 -129.0 1.6215 1.6 8.5 SW J1753.5-0127
270.2047 -25.0743 15.1 25.4 -74.0 0.8812 0.8 4.3 GX 5-1
270.1768 -25.6631 3.9 25.6 -72.7 3.6570 3.1 8.3 GRS 1758-258
273.8632 -13.8945 152.5 28.0 -99.6 -0.0895 -0.1 11.9 GX 17+2
275.9150 -30.4997 7.6 32.0 -66.7 1.9517 1.5 8.0 H1820-303
284.8733 -24.9623 8.4 38.4 -79.3 3.0977 1.4 9.2 HT1900.1-2455
262.9217 -33.8042 4.5 24.3 -48.3 2.6858 2.5 3.8 GX 354-0
249.6913 29.1257 2.6 45.0 175.9 7.2912 4.4 ------ UNKNOWN
259.8260 -8.1264 3.1 16.3 -125.5 3.1064 3.7 ------ UNKNOWN
267.8226 -69.7290 2.3 55.9 -19.3 14.6591 5.0 ------ UNKNOWN
274.4996 -8.8315 2.4 29.6 -109.7 5.7472 4.8 ------ UNKNOWN
Plot creation:
Wed Feb 21 05:23:40 EST 2024