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
245.1071 -15.8201 0.0152 14.5 166.5 2.5125 12.6 TRIG_01093693
------------------------------------------
Foreground time interval of the image:
4.000 15.620 (delta_t = 11.620 [sec])
31.000 39.290 (delta_t = 8.290 [sec])
40.000 66.770 (delta_t = 26.770 [sec])
69.000 72.201 (delta_t = 3.201 [sec])
Background time interval of the image:
-60.000 -31.250 (delta_t = 28.750 [sec])
-10.000 4.000 (delta_t = 14.000 [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
4.000000 15.620000
31.000000 39.290000
40.000000 66.770000
69.000000 79.800000
85.000000 116.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.49548 ( -0.368788 0.378266 )
Norm@50keV : 2.45841E-04 ( -7.16949e-05 9.28768e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.41 using 59 PHA bins.
# Reduced chi-squared = 0.8669 for 57 degrees of freedom
# Null hypothesis probability = 7.522188e-01
Photon flux (15-150 keV) in 88.48 sec: 0.612960 ( -0.0541688 0.0547047 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.6756e-06 ( -1.33865e-07 1.34473e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
4.000000 15.620000
31.000000 39.290000
40.000000 66.770000
69.000000 79.800000
85.000000 116.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 3.98709E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 353.99 using 59 PHA bins.
# Reduced chi-squared = 6.3213 for 56 degrees of freedom
# Null hypothesis probability = 7.263642e-45
Photon flux (15-150 keV) in 88.48 sec: 0.597876 ( -0.059943 0.058772 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.61664e-06 ( -1.5215e-07 1.5261e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
4.000000 15.620000
31.000000 39.290000
40.000000 66.770000
69.000000 79.800000
85.000000 116.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -5.73969 ( 3.67862 5.73969 )
beta : -5.53425 ( -0.349765 0.400234 )
Epeak [keV] : 317.529 ( -317.529 -317.529 )
Norm@50keV : 3.22408E-02 ( -0.00905616 0.0133603 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.44 using 59 PHA bins.
# Reduced chi-squared = 0.8990 for 55 degrees of freedom
# Null hypothesis probability = 6.859639e-01
Photon flux (15-150 keV) in 88.48 sec: 0.452481 ( ) 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] : 2.91281 (-0.224108 0.252564)
R^2/D10^2 : 96.5676 (-43.8162 80.6729)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.73 using 59 PHA bins.
# Reduced chi-squared = 0.9427 for 57 degrees of freedom
# Null hypothesis probability = 5.984627e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.327e-06 2.154e-07
25- 50 1.743e-07 3.460e-08
50-150 2.201e-10 1.385e-10
15-150 1.501e-06 2.495e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.41093 (-0.607197 0.732834)
Norm : 102.197 (-38.423 63.094)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.363e-06 2.000e-07
25- 50 2.050e-07 4.203e-08
50-150 1.560e-09 8.990e-10
15-150 1.570e-06 2.199e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.78883 (-1.03846 0.758209)
R1^2/D10^2 : 2191.60 (-2114.06 4.65336e+06)
kT2 [keV] : 3.70656 (-0.695765 2.61161)
R2^2/D10^2 : 13.6398 (-12.9145 6.5128)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.337e-06 7.072e-07
25- 50 2.075e-07 1.011e-07
50-150 8.993e-09 1.139e-08
15-150 1.554e-06 8.047e-07
Peak spectrum fit
Power-law model
Time interval is from 123.500 sec. to 124.500 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.58875 ( -1.49857 2.25109 )
Norm@50keV : 1.87015E-04 ( -0.000187017 0.000698146 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.69 using 59 PHA bins.
# Reduced chi-squared = 0.7489 for 57 degrees of freedom
# Null hypothesis probability = 9.205732e-01
Photon flux (15-150 keV) in 1 sec: 0.511082 ( -0.180608 0.1825 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.56997e-08 ( -6.22768e-09 7.1807e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 123.500 sec. to 124.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 7.24897E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.52 using 59 PHA bins.
# Reduced chi-squared = 1.170 for 56 degrees of freedom
# Null hypothesis probability = 1.800110e-01
Photon flux (15-150 keV) in 1 sec: 0.522293 ( -0.174737 0.178357 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.54623e-08 ( -5.57481e-09 3.5923e-09 ) ergs/cm2
Band function
Time interval is from 123.500 sec. to 124.500 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -3.66643 ( 1.33859 3.66676 )
beta : -5.58681 ( -2.24804 1.50083 )
Epeak [keV] : 693.330 ( -693.33 -693.33 )
Norm@50keV : 0.669767 ( 842.236 -0.669073 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.69 using 59 PHA bins.
# Reduced chi-squared = 0.7761 for 55 degrees of freedom
# Null hypothesis probability = 8.869393e-01
Photon flux (15-150 keV) in 1 sec: 0.452481 ( ) 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] : 2.52186 (-0.724495 0.890022)
R^2/D10^2 : 246.583 (-246.581 3023.52)
(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 1.441e-08 8.385e-09
25- 50 1.097e-09 7.295e-10
50-150 3.773e-13 4.946e-13
15-150 1.550e-08 8.675e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.62792 (-1.86301 3.1723)
Norm : 160.648 (-160.648 1371.23)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.399e-08 8.265e-09
25- 50 1.477e-09 1.004e-09
50-150 5.106e-12 6.090e-12
15-150 1.548e-08 9.090e-09
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.49771 (-0.399528 0.872782)
R1^2/D10^2 : 261.819 (-169.974 3320.16)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 4.40808E-05 (-4.51283e-05 -4.51283e-05)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.432e-08 8.060e-09
25- 50 1.524e-09 6.740e-10
50-150 1.167e-08 1.245e-09
15-150 2.752e-08 9.730e-09
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: 5.51419 ( -0.436792 0.454446 )
Norm@50keV : 2.37749E-04 ( -8.4217e-05 0.000116325 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.53 using 59 PHA bins.
# Reduced chi-squared = 0.8163 for 57 degrees of freedom
# Null hypothesis probability = 8.375381e-01
Photon flux (15-150 keV) in 49.88 sec: 0.603774 ( -0.0584742 0.0586862 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.29364e-07 ( -8.5625e-08 8.5633e-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 : 4.47311E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 269.70 using 59 PHA bins.
# Reduced chi-squared = 4.8162 for 56 degrees of freedom
# Null hypothesis probability = 9.991820e-30
Photon flux (15-150 keV) in 49.88 sec: 0.591779 ( -0.062105 0.061225 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.94249e-07 ( -9.03776e-08 9.1046e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -6.63306 ( 4.21648 6.63306 )
beta : -5.56862 ( -0.413739 0.483442 )
Epeak [keV] : 388.733 ( -388.733 -388.733 )
Norm@50keV : 3.06565E-02 ( -0.0104215 0.0169483 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.57 using 59 PHA bins.
# Reduced chi-squared = 0.8468 for 55 degrees of freedom
# Null hypothesis probability = 7.835029e-01
Photon flux (15-150 keV) in 49.88 sec: 0.452481 ( ) 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) = 2.56e-07
S(50-100 keV) = 2.27e-08
T90 vs. Hardness ratio plot
T90 = 112 sec.
Hardness ratio (energy fluence ratio) = 0.0886719
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.125901
Count Ratio (50-100 keV) / (15-25 keV) = 0.00959577
Mask shadow pattern
IMX = -2.512112927543421E-01, IMY = -6.012945459033720E-02
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 -31.250000
-10.000000 4.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.8528 -62.7257 7.6 50.6 30.2 0.5219 1.5 6.0 GX 301-2
245.0504 -15.7925 2.9 14.5 166.3 0.3043 4.0 10.0 Sco X-1
256.1685 -37.7402 24.5 10.1 -39.3 -0.0325 -0.5 10.6 4U 1700-377
256.6132 -36.3051 5.2 9.4 -46.9 0.1563 2.2 11.1 GX 349+2
262.8621 -24.9040 0.0 13.9 -109.2 -0.0992 -1.2 12.4 GX 1+4
264.7264 -44.5846 4.2 19.5 -38.3 -0.2138 -2.7 8.1 4U 1735-44
268.4870 -1.3569 5.3 34.5 -143.6 -0.2532 -2.2 9.2 SW J1753.5-0127
270.3021 -24.9341 10.9 20.2 -100.4 0.1002 1.1 8.8 GX 5-1
270.3929 -25.7341 3.8 20.0 -98.1 -0.2898 -3.0 4.9 GRS 1758-258
274.1668 -14.0709 4.2 28.7 -119.3 -0.2856 -2.7 9.6 GX 17+2
275.9169 -30.2309 7.1 23.8 -83.6 -0.1672 -1.6 8.2 H1820-303
285.1580 -24.8134 19.2 33.0 -91.1 -0.0956 -0.6 9.2 HT1900.1-2455
263.1687 -33.8228 17.0 13.2 -70.5 -0.0566 -0.7 9.0 GX 354-0
240.1690 12.6752 2.9 43.4 167.3 0.6121 4.0 ------ UNKNOWN
261.5280 -60.1564 2.7 31.4 -13.8 0.3877 4.3 ------ UNKNOWN
259.6579 -1.1336 3.0 30.8 -158.5 0.3702 3.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
4.000000 15.620000
31.000000 39.290000
40.000000 66.770000
69.000000 72.200600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6478 -62.9591 23.9 50.8 29.9 -0.4637 -0.5 11.3 GX 301-2
245.1106 -15.7945 0.9 14.5 166.6 2.5037 12.6 12.0 Sco X-1
255.8276 -38.0012 4.5 10.1 -37.2 0.5527 2.6 12.1 4U 1700-377
256.6170 -36.3633 4.9 9.4 -46.6 0.5074 2.4 9.5 GX 349+2
262.8397 -24.7138 5.2 14.0 -110.0 -0.4646 -2.2 9.4 GX 1+4
264.6747 -44.4704 5.5 19.4 -38.5 -0.4719 -2.1 3.2 4U 1735-44
268.2201 -1.3815 12.2 34.3 -144.0 -0.2828 -0.9 9.8 SW J1753.5-0127
270.1467 -25.2404 0.0 19.9 -99.7 0.1160 0.5 12.2 GX 5-1
270.3800 -25.7134 3.5 20.0 -98.2 -0.9699 -3.7 4.6 GRS 1758-258
274.1657 -14.0658 3.8 28.7 -119.3 -0.8930 -3.0 9.5 GX 17+2
275.9826 -30.4963 5.8 23.9 -83.0 -0.5885 -2.0 8.3 H1820-303
285.1393 -25.0245 24.1 32.9 -90.8 0.2030 0.5 8.4 HT1900.1-2455
262.9053 -33.9502 4.2 13.0 -69.8 -0.6414 -2.7 8.1 GX 354-0
229.0686 -63.4269 2.2 35.6 13.5 1.4694 5.3 ------ UNKNOWN
263.4396 -50.7724 2.6 23.7 -25.5 0.9327 4.4 ------ UNKNOWN
290.1251 -58.5420 2.3 40.2 -33.8 1.8776 5.1 ------ UNKNOWN
269.1237 24.8998 3.6 58.4 -158.9 3.6029 3.2 ------ UNKNOWN
323.1362 -70.2307 2.3 56.8 -24.1 5.9029 4.9 ------ UNKNOWN
312.5131 -58.4353 2.4 51.5 -38.2 4.4223 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
111.700630 131.110000
137.000000 138.970000
152.000000 156.490000
160.000000 169.450000
173.000000 217.690000
219.000000 228.040000
234.000000 234.200000
240.000000 957.800600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0937 -15.8216 0.0 0.1 116.9 51.4006 50.6 12.7 Sco X-1
254.4557 35.3421 13.2 52.0 175.9 -3.0779 -0.9 0.1 Her X-1
256.0561 -37.9804 6.2 24.1 -35.2 -2.2902 -1.8 8.8 4U 1700-377
256.6454 -36.2955 13.2 22.9 -38.2 -1.0690 -0.9 12.7 GX 349+2
263.1206 -24.9006 9.1 19.1 -72.6 1.8111 1.3 11.1 GX 1+4
264.9500 -44.3576 34.5 33.1 -40.1 0.5401 0.3 10.5 4U 1735-44
268.2163 -1.5199 11.6 26.9 -133.7 1.4380 1.0 10.0 SW J1753.5-0127
270.4552 -25.0340 2700.0 25.4 -78.4 0.0043 0.0 9.7 GX 5-1
270.3013 -25.7431 42.1 25.4 -76.8 -0.4609 -0.3 0.1 GRS 1758-258
273.8526 -14.0247 5.9 27.8 -103.7 -2.9732 -1.9 8.9 GX 17+2
275.8123 -30.2395 5.6 31.5 -71.2 -4.0500 -2.1 9.6 H1820-303
285.0975 -24.9265 3.9 38.4 -83.4 9.2530 3.0 3.4 HT1900.1-2455
262.7880 -33.9665 0.0 24.1 -51.8 2.1201 1.5 12.8 GX 354-0
240.3376 38.8203 2.7 54.9 161.7 25.7661 4.2 ------ UNKNOWN
197.8775 -56.0602 4.5 53.8 16.8 15.4396 2.6 ------ UNKNOWN
232.2487 -65.9241 3.1 50.8 -7.0 8.7288 3.7 ------ UNKNOWN
261.2811 -12.2779 3.0 16.1 -114.6 4.4220 3.8 ------ UNKNOWN
271.5556 -50.1510 2.7 40.4 -39.8 8.8347 4.3 ------ UNKNOWN
286.5279 21.6029 2.4 55.2 -145.3 27.9375 4.8 ------ UNKNOWN
Plot creation:
Wed Jan 19 20:20:08 EST 2022