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
261.5713 -15.8883 0.0068 16.3 86.4 6.1261 28.4 TRIG_01192483
------------------------------------------
Foreground time interval of the image:
0.000 3.990 (delta_t = 3.990 [sec])
5.000 59.010 (delta_t = 54.010 [sec])
60.000 64.000 (delta_t = 4.000 [sec])
Background time interval of the image:
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
0.000000 3.990000
5.000000 59.010000
60.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.82797 ( -0.115141 0.118608 )
Norm@50keV : 3.53392E-03 ( -0.000258003 0.000256653 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.45 using 59 PHA bins.
# Reduced chi-squared = 0.9201 for 57 degrees of freedom
# Null hypothesis probability = 6.463326e-01
Photon flux (15-150 keV) in 62 sec: 0.860123 ( -0.0434378 0.0438108 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44509e-06 ( -1.12896e-07 1.13433e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 3.990000
5.000000 59.010000
60.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98554 ( -0.20513 -1.98554 )
Epeak [keV] : 0.647408 ( -0.103781 0.122021 )
Norm@50keV : 1.11699E-02 ( -0.000682394 0.00165241 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.74 using 59 PHA bins.
# Reduced chi-squared = 1.049 for 56 degrees of freedom
# Null hypothesis probability = 3.755608e-01
Photon flux (15-150 keV) in 62 sec: 0.859599 ( -0.051601 0.043365 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44478e-06 ( -1.69979e-07 5.63208e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 3.990000
5.000000 59.010000
60.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26727 ( )
beta : -9.37167 ( )
Epeak [keV] : 52.2538 ( )
Norm@50keV : 9.43890E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 251.33 using 59 PHA bins.
# Reduced chi-squared = 4.5696 for 55 degrees of freedom
# Null hypothesis probability = 6.865123e-27
Photon flux (15-150 keV) in 62 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] : 7.03866 ( )
R^2/D10^2 : 1.36337 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 131.71 using 59 PHA bins.
# Reduced chi-squared = 2.3106 for 57 degrees of freedom
# Null hypothesis probability = 7.586467e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.766e-07 5.431e-08
25- 50 9.365e-07 5.270e-08
50-150 1.583e-07 2.737e-08
15-150 1.771e-06 8.835e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.3885 (-2.61407 3.02644)
Norm : 7.47910 (-0.946674 1.11157)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.577e-07 5.890e-08
25- 50 8.878e-07 4.309e-08
50-150 3.861e-07 6.175e-08
15-150 2.132e-06 1.057e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.35806 (-0.800566 0.640484)
R1^2/D10^2 : 4.08675 (-1.52784 3.08485)
kT2 [keV] : 19.6513 (-6.04185 9.62045)
R2^2/D10^2 : 9.24933E-03 (-0.00675501 0.0188829)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.492e-07 1.001e-07
25- 50 8.338e-07 9.145e-08
50-150 6.392e-07 3.233e-07
15-150 2.322e-06 4.321e-07
Peak spectrum fit
Power-law model
Time interval is from 60.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.82797 ( -0.115141 0.118608 )
Norm@50keV : 3.53392E-03 ( -0.000258003 0.000256653 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.45 using 59 PHA bins.
# Reduced chi-squared = 0.9201 for 57 degrees of freedom
# Null hypothesis probability = 6.463326e-01
Photon flux (15-150 keV) in 62 sec: 0.860123 ( -0.0434378 0.0438108 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44509e-06 ( -1.12896e-07 1.13433e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 60.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98554 ( -0.20513 -1.98554 )
Epeak [keV] : 0.647408 ( -0.103781 0.122021 )
Norm@50keV : 1.11699E-02 ( -0.000682394 0.00165241 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.74 using 59 PHA bins.
# Reduced chi-squared = 1.049 for 56 degrees of freedom
# Null hypothesis probability = 3.755608e-01
Photon flux (15-150 keV) in 62 sec: 0.859599 ( -0.051601 0.043365 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44478e-06 ( -1.69979e-07 5.63208e-08 ) ergs/cm2
Band function
Time interval is from 60.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26727 ( )
beta : -9.37167 ( )
Epeak [keV] : 52.2538 ( )
Norm@50keV : 9.43890E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 251.33 using 59 PHA bins.
# Reduced chi-squared = 4.5696 for 55 degrees of freedom
# Null hypothesis probability = 6.865123e-27
Photon flux (15-150 keV) in 62 sec: ( ) 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] : 7.03866 ( )
R^2/D10^2 : 1.36337 ( )
(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 6.766e-07 5.555e-08
25- 50 9.365e-07 5.084e-08
50-150 1.583e-07 2.641e-08
15-150 1.771e-06 8.804e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.3885 (-2.61407 3.02644)
Norm : 7.47910 (-0.946674 1.11157)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.577e-07 6.107e-08
25- 50 8.878e-07 4.402e-08
50-150 3.861e-07 6.098e-08
15-150 2.132e-06 9.858e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.35806 (-0.800566 0.640484)
R1^2/D10^2 : 4.08675 (-1.52784 3.07879)
kT2 [keV] : 19.6513 (-6.04185 9.62045)
R2^2/D10^2 : 9.24933E-03 (-0.00675501 0.0188829)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.492e-07 1.057e-07
25- 50 8.338e-07 1.073e-07
50-150 6.392e-07 2.822e-07
15-150 2.322e-06 4.263e-07
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: 2.82797 ( -0.115141 0.118608 )
Norm@50keV : 3.53392E-03 ( -0.000258003 0.000256653 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.45 using 59 PHA bins.
# Reduced chi-squared = 0.9201 for 57 degrees of freedom
# Null hypothesis probability = 6.463326e-01
Photon flux (15-150 keV) in 62 sec: 0.860123 ( -0.0434378 0.0438108 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44509e-06 ( -1.12896e-07 1.13433e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98554 ( -0.20513 -1.98554 )
Epeak [keV] : 0.647408 ( -0.103781 0.122021 )
Norm@50keV : 1.11699E-02 ( -0.000682394 0.00165241 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.74 using 59 PHA bins.
# Reduced chi-squared = 1.049 for 56 degrees of freedom
# Null hypothesis probability = 3.755608e-01
Photon flux (15-150 keV) in 62 sec: 0.859599 ( -0.051601 0.043365 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.44478e-06 ( -1.69979e-07 5.63208e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.26727 ( )
beta : -9.37167 ( )
Epeak [keV] : 52.2538 ( )
Norm@50keV : 9.43890E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 251.33 using 59 PHA bins.
# Reduced chi-squared = 4.5696 for 55 degrees of freedom
# Null hypothesis probability = 6.865123e-27
Photon flux (15-150 keV) in 62 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) = 8.22e-07
S(50-100 keV) = 4.63e-07
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.56326
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.648328
Count Ratio (50-100 keV) / (15-25 keV) = 0.173453
Mask shadow pattern
IMX = 1.842624446662300E-02, IMY = -2.913732216153950E-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:
-60.000000 -41.030000
-35.000000 -24.912900
-19.000000 3.990000
5.000000 10.070000
11.000000 11.000800
12.000000 12.350000
14.000000 15.497300
21.000000 38.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8455 -15.4719 0.0 0.2 102.7 0.6044 2.7 12.7 Sco X-1
254.5552 35.2367 10.1 51.5 2.7 0.7188 1.1 7.9 Her X-1
256.0387 -37.9911 9.2 24.7 150.6 -0.2978 -1.3 9.2 4U 1700-377
256.6159 -36.3775 5.1 23.5 147.7 0.5156 2.2 9.1 GX 349+2
263.1746 -24.7072 4.3 19.7 113.5 -0.7003 -2.7 9.3 GX 1+4
264.9116 -44.5779 11.6 33.8 146.1 0.3513 1.0 10.5 4U 1735-44
268.5138 -1.3626 5.0 27.4 53.8 -0.7312 -2.3 10.3 SW J1753.5-0127
270.2165 -25.1553 57.2 25.8 108.7 -0.0631 -0.2 5.9 GX 5-1
270.3398 -25.7350 15.9 26.1 109.9 0.2393 0.8 2.1 GRS 1758-258
273.9737 -13.9502 9.0 28.4 83.3 -0.4490 -1.3 5.5 GX 17+2
276.0023 -30.4895 7.7 32.4 115.6 0.5822 1.5 8.4 H1820-303
285.2015 -24.9377 12.8 39.1 103.2 -0.6228 -0.9 9.1 HT1900.1-2455
263.0521 -33.9752 8.1 24.9 134.0 -0.3590 -1.4 9.0 GX 354-0
278.1902 11.9382 3.0 43.0 44.8 2.2375 3.8 ------ UNKNOWN
261.5756 -15.9058 0.4 16.3 86.4 7.4919 29.7 ------ UNKNOWN
253.1922 -71.1914 3.0 56.0 169.1 3.7913 3.8 ------ UNKNOWN
205.7983 -0.8963 2.8 41.0 -80.6 3.6526 4.2 ------ UNKNOWN
198.7390 -24.0417 3.2 43.9 -116.4 3.7863 3.7 ------ UNKNOWN
203.6557 -7.9078 3.3 40.8 -91.8 3.3321 3.6 ------ UNKNOWN
195.1592 -33.5956 4.2 48.1 -129.2 2.5861 2.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 3.990000
5.000000 59.010000
60.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8455 -15.4719 0.0 0.2 102.7 0.4796 2.6 12.7 Sco X-1
254.4099 35.4270 6.1 51.7 2.5 -1.0502 -1.9 5.6 Her X-1
256.1574 -37.8983 98.8 24.7 150.3 0.0237 0.1 8.7 4U 1700-377
256.2583 -36.4670 19.6 23.4 148.5 -0.1148 -0.6 8.9 GX 349+2
263.1707 -24.7899 4.7 19.7 113.8 -0.5315 -2.5 9.2 GX 1+4
264.7381 -44.5945 34.4 33.8 146.3 -0.0958 -0.3 8.7 4U 1735-44
268.5134 -1.3924 3.2 27.4 53.9 -0.9463 -3.6 9.4 SW J1753.5-0127
270.2392 -25.2184 7.2 25.8 108.8 -0.4033 -1.6 8.7 GX 5-1
270.3318 -25.8044 4.4 26.1 110.0 0.6856 2.7 4.0 GRS 1758-258
274.0387 -14.1184 6.3 28.4 83.7 -0.5351 -1.8 5.3 GX 17+2
275.7538 -30.2949 8.6 32.1 115.4 -0.4498 -1.3 9.9 H1820-303
284.8847 -24.9536 16.5 38.8 103.2 0.3840 0.7 8.5 HT1900.1-2455
262.8141 -33.8706 20.3 24.7 134.1 -0.1261 -0.6 9.0 GX 354-0
261.5713 -15.8882 0.4 16.3 86.4 6.1266 28.4 ------ UNKNOWN
249.5731 -34.1738 2.7 19.3 160.1 0.7638 4.2 ------ UNKNOWN
220.0163 34.5657 2.8 55.2 -32.3 4.3851 4.2 ------ UNKNOWN
215.0900 25.4993 3.2 50.0 -43.1 2.8404 3.5 ------ UNKNOWN
205.8099 -0.8523 2.5 41.0 -80.5 3.2826 4.6 ------ UNKNOWN
203.6495 -7.9393 4.1 40.8 -91.8 2.1616 2.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
122.500610 137.210000
138.000000 141.440000
147.000000 151.530000
153.000000 156.630000
173.000000 243.099100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8438 -15.4776 0.0 16.1 -93.6 0.6142 2.3 12.5 Sco X-1
254.5751 35.3406 8.7 51.7 -10.1 0.7998 1.3 5.8 Her X-1
256.1611 -37.8625 4.2 22.5 -171.5 0.7022 2.7 8.3 4U 1700-377
256.3107 -36.5408 4.6 21.2 -171.0 0.6382 2.5 9.3 GX 349+2
262.8513 -24.6254 25.4 8.8 169.7 0.1057 0.5 11.2 GX 1+4
264.5498 -44.5991 0.0 28.8 172.8 -0.7771 -2.7 12.2 4U 1735-44
268.2486 -1.3980 6.2 15.9 22.3 -0.4545 -1.9 7.9 SW J1753.5-0127
270.1590 -25.2293 2700.0 12.3 138.0 -0.0007 -0.0 11.3 GX 5-1
270.3114 -25.7367 7.0 12.8 139.1 -0.4875 -2.0 0.6 GRS 1758-258
273.8517 -13.8901 15.2 12.0 79.3 0.2051 0.8 12.6 GX 17+2
276.0933 -30.3578 7.5 19.6 137.2 -0.4227 -1.5 8.7 H1820-303
285.1485 -24.8434 7.4 23.8 113.2 0.5300 1.5 7.7 HT1900.1-2455
288.7977 10.8747 393.4 38.0 44.1 0.0172 0.0 4.3 GRS 1915+105
262.8730 -33.9745 297.7 18.1 173.8 0.0091 0.0 10.2 GX 354-0
261.5743 -15.8704 0.3 0.0 -34.1 9.4416 35.3 ------ UNKNOWN
244.1197 -35.2965 2.6 24.9 -147.2 1.1822 4.5 ------ UNKNOWN
245.2952 27.2085 2.5 45.9 -23.1 2.1562 4.7 ------ UNKNOWN
Plot creation:
Tue Sep 19 01:29:59 EDT 2023