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
245.1356 -15.9138 0.1356 41.9 -154.8 -0.0787 -1.4 TRIG_01064377
------------------------------------------
Foreground time interval of the image:
39.404 46.020 (delta_t = 6.616 [sec])
47.000 47.012 (delta_t = 0.012 [sec])
Background time interval of the image:
-17.999 39.404 (delta_t = 57.403 [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
39.404000 46.020000
47.000000 47.012000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.74945 ( -1.44204 2.31642 )
Norm@50keV : 1.10429E-04 ( -0.000110428 0.00036638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.17 using 59 PHA bins.
# Reduced chi-squared = 1.073 for 57 degrees of freedom
# Null hypothesis probability = 3.288340e-01
Photon flux (15-150 keV) in 6.628 sec: 0.353820 ( -0.110182 0.109921 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.1371e-08 ( -2.50218e-08 2.69804e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
39.404000 46.020000
47.000000 47.012000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 3.19556E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 90.23 using 59 PHA bins.
# Reduced chi-squared = 1.611 for 56 degrees of freedom
# Null hypothesis probability = 2.540296e-03
Photon flux (15-150 keV) in 6.628 sec: 0.354022 ( -0.108746 0.114797 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.13783e-08 ( -2.39875e-08 2.57027e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
39.404000 46.020000
47.000000 47.012000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -10.00000 ( 3.19293e-06 10 )
beta : -6.10909 ( -2.04962 1.79538 )
Epeak [keV] : 568.213 ( -568.213 -568.213 )
Norm@50keV : 1.00856E-02 ( -0.0107688 0.0552565 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.27 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 55 degrees of freedom
# Null hypothesis probability = 2.611433e-01
Photon flux (15-150 keV) in 6.628 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] : 2.68605 (-0.77746 0.90626)
R^2/D10^2 : 108.157 (-108.157 1303.07)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.05 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 57 degrees of freedom
# Null hypothesis probability = 3.326318e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.521e-08 3.682e-08
25- 50 6.353e-09 3.960e-09
50-150 3.954e-12 4.597e-12
15-150 7.157e-08 4.186e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.89966 (-1.99326 3.15113)
Norm : 89.8606 (-89.8606 778.059)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.400e-08 3.659e-08
25- 50 7.722e-09 5.233e-09
50-150 3.610e-11 4.229e-11
15-150 7.175e-08 4.143e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.219750 (-2.6888 -2.6888)
R1^2/D10^2 : 8.02796E+23 (-8.83861e+23 -8.84057e+23)
kT2 [keV] : 3.21606 (-0.895063 1.19093)
R2^2/D10^2 : 29.1482 (-24.6083 58.4546)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.528e-08 7.897e+01
25- 50 6.370e-09 6.293e+02
50-150 3.981e-12 1.443e+04
15-150 7.165e-08 1.605e+04
Peak spectrum fit
Power-law model
Time interval is from 40.044 sec. to 41.044 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.73123 ( -1.21937 2.74755 )
Norm@50keV : 1.57751E-03 ( -0.00157487 0.00273624 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.37 using 59 PHA bins.
# Reduced chi-squared = 0.9187 for 57 degrees of freedom
# Null hypothesis probability = 6.492891e-01
Photon flux (15-150 keV) in 1 sec: 0.772358 ( -0.2945 0.289002 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.87803e-08 ( -1.41003e-08 1.71296e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 40.044 sec. to 41.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93004 ( )
Epeak [keV] : 1.14426 ( )
Norm@50keV : 2.85021E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.24 using 59 PHA bins.
# Reduced chi-squared = 0.9507 for 56 degrees of freedom
# Null hypothesis probability = 5.799483e-01
Photon flux (15-150 keV) in 1 sec: 0.758713 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.75723e-08 ( -1.29618e-08 1.84444e-08 ) ergs/cm2
Band function
Time interval is from 40.044 sec. to 41.044 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.69502 ( 8.69502 8.69502 )
beta : -3.73339 ( -2.75198 1.22099 )
Epeak [keV] : 2.11976 ( -2.11976 -2.11976 )
Norm@50keV : 0.213980 ( -0.213999 0.371942 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.37 using 59 PHA bins.
# Reduced chi-squared = 0.9521 for 55 degrees of freedom
# Null hypothesis probability = 5.758746e-01
Photon flux (15-150 keV) in 1 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] : 3.60861 (-1.99212 3.7382)
R^2/D10^2 : 32.1473 (-35.4965 12119.1)
(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 1.735e-08 1.039e-08
25- 50 4.623e-09 3.337e-09
50-150 2.917e-11 3.945e-11
15-150 2.201e-08 1.353e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.4598 (-8.36094 23.6688)
Norm : 20.1184 (-19.8862 921.456)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.691e-08 1.011e-08
25- 50 8.661e-09 5.580e-09
50-150 8.447e-10 8.650e-10
15-150 2.642e-08 1.706e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.81509 (-1.399 1.9909)
R1^2/D10^2 : 2395.20 (-7104.66 -7135.63)
kT2 [keV] : 8.19115 (-4.05006 13.3619)
R2^2/D10^2 : 0.471192 (-0.625117 3.00993)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.485e-08 7.290e-09
25- 50 1.075e-08 7.065e-09
50-150 3.006e-09 3.096e-09
15-150 2.861e-08 1.575e-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: 5.74945 ( -1.44204 2.31642 )
Norm@50keV : 1.10429E-04 ( -0.000110428 0.00036638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.17 using 59 PHA bins.
# Reduced chi-squared = 1.073 for 57 degrees of freedom
# Null hypothesis probability = 3.288340e-01
Photon flux (15-150 keV) in 6.628 sec: 0.353820 ( -0.110182 0.109921 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.1371e-08 ( -2.50218e-08 2.69804e-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 : 3.19556E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 90.23 using 59 PHA bins.
# Reduced chi-squared = 1.611 for 56 degrees of freedom
# Null hypothesis probability = 2.540296e-03
Photon flux (15-150 keV) in 6.628 sec: 0.354022 ( -0.108746 0.114797 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.13783e-08 ( -2.39875e-08 2.57027e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -10.00000 ( 3.19293e-06 10 )
beta : -6.10909 ( -2.04962 1.79538 )
Epeak [keV] : 568.213 ( -568.213 -568.213 )
Norm@50keV : 1.00856E-02 ( -0.0107688 0.0552565 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.27 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 55 degrees of freedom
# Null hypothesis probability = 2.611433e-01
Photon flux (15-150 keV) in 6.628 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) = 9.73e-09
S(50-100 keV) = 7.24e-10
T90 vs. Hardness ratio plot
T90 = 5.65199995040894 sec.
Hardness ratio (energy fluence ratio) = 0.074409
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = -0.0938053
Count Ratio (50-100 keV) / (15-25 keV) = -0.0869038
Mask shadow pattern
IMX = -8.118025870492027E-01, IMY = 3.817985987456825E-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:
-17.999410 39.404000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8896 -15.5556 12.8 42.0 -154.2 -0.1711 -0.9 7.3 Sco X-1
255.9069 -37.7852 3.3 47.2 171.7 0.9987 3.5 5.2 4U 1700-377
256.5075 -36.4303 5.5 45.8 172.4 0.4929 2.1 3.5 GX 349+2
262.9989 -24.9392 0.0 33.4 177.1 -0.0401 -0.3 11.6 GX 1+4
264.6222 -44.3931 368.3 49.3 159.6 -0.0114 -0.0 6.2 4U 1735-44
268.4944 -1.5288 18.4 15.4 -140.9 0.0634 0.6 8.9 SW J1753.5-0127
270.4349 -25.0349 5.6 29.8 166.2 0.2607 2.1 8.6 GX 5-1
270.2678 -25.8036 9.7 30.5 165.8 0.1530 1.2 4.1 GRS 1758-258
274.1221 -13.9529 31.5 18.4 172.0 -0.0404 -0.4 8.4 GX 17+2
275.7913 -30.3407 54.5 33.1 154.1 -0.0335 -0.2 7.1 H1820-303
285.1195 -25.0483 16.1 27.0 138.6 -0.0944 -0.7 8.9 HT1900.1-2455
288.8206 10.7379 11.0 10.3 -7.7 -0.1170 -1.0 12.5 GRS 1915+105
299.5569 35.1057 0.8 36.4 -15.8 2.1221 14.5 6.0 Cyg X-1
308.2029 41.0920 85.8 45.1 -11.8 -0.0240 -0.1 9.4 Cyg X-3
326.2134 38.3434 8.1 53.4 3.3 -0.4193 -1.4 2.4 Cyg X-2
263.0945 -33.9113 3.8 40.6 168.2 0.5342 3.0 7.0 GX 354-0
242.7508 -16.0734 2.8 44.1 -153.8 0.7953 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
39.404000 46.020000
47.000000 47.012000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0431 -15.7598 12.7 41.9 -154.5 -0.0507 -0.9 8.1 Sco X-1
255.9817 -37.8235 25.6 47.2 171.6 0.0344 0.5 1.3 4U 1700-377
256.5173 -36.4200 3.4 45.8 172.4 -0.2297 -3.4 4.0 GX 349+2
263.0117 -24.7312 1061.6 33.2 177.3 0.0004 0.0 0.9 GX 1+4
264.8344 -44.4199 11.3 49.2 159.4 -0.1092 -1.0 4.3 4U 1735-44
268.2624 -1.5572 5.7 15.6 -140.9 0.0645 2.0 8.9 SW J1753.5-0127
270.2985 -25.2410 66.4 30.0 166.2 0.0070 0.2 9.7 GX 5-1
270.2575 -25.5952 7.5 30.3 166.0 0.0718 1.9 9.2 GRS 1758-258
274.1448 -13.9981 10.8 18.4 171.8 0.0348 1.1 8.4 GX 17+2
276.0991 -30.3222 3.8 33.0 153.6 -0.1356 -3.0 9.4 H1820-303
285.1753 -24.9904 4.1 26.9 138.5 0.1224 2.8 8.7 HT1900.1-2455
288.9592 10.9062 8.5 10.5 -7.6 -0.0440 -1.4 9.8 GRS 1915+105
299.5027 35.3030 21.1 36.6 -16.1 0.0238 0.5 7.4 Cyg X-1
308.0354 41.0458 6.8 45.0 -11.9 0.0873 1.7 6.5 Cyg X-3
326.1696 38.2064 8.3 53.3 3.4 0.1330 1.4 6.9 Cyg X-2
263.1178 -33.7307 4.2 40.5 168.3 -0.1446 -2.7 9.0 GX 354-0
322.3723 29.1163 2.2 45.9 11.5 0.3169 5.3 ------ UNKNOWN
242.2889 -2.1669 2.2 41.4 -133.6 0.3374 5.4 ------ UNKNOWN
229.2132 -19.1511 2.1 57.3 -152.5 0.9190 5.4 ------ UNKNOWN
233.2011 -3.6487 2.1 50.6 -134.5 0.8685 5.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
199.000600 243.038800
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1009 -15.8172 0.0 0.1 -24.5 1.8385 21.4 12.7 Sco X-1
254.3115 35.2509 3.9 51.9 -2.0 0.6602 2.9 9.0 Her X-1
255.8188 -37.7789 10.1 23.8 147.2 0.1153 1.1 8.9 4U 1700-377
256.2759 -36.4274 6.0 22.8 144.8 0.1961 1.9 7.7 GX 349+2
262.9782 -24.7572 149.7 18.9 109.3 0.0080 0.1 1.8 GX 1+4
264.7974 -44.3059 7.0 32.9 142.2 -0.2277 -1.6 9.0 4U 1735-44
268.5015 -1.5416 11.3 27.1 48.9 0.1187 1.0 9.6 SW J1753.5-0127
270.3774 -25.2173 7.1 25.4 104.2 0.2048 1.6 9.7 GX 5-1
270.3057 -25.8796 4.7 25.5 105.7 0.3068 2.4 8.2 GRS 1758-258
274.1210 -14.0467 7.1 28.1 78.6 -0.2197 -1.6 6.7 GX 17+2
275.7592 -30.2461 0.0 31.5 111.0 -0.1706 -1.1 11.2 H1820-303
284.8780 -25.0529 93.2 38.2 99.0 -0.0353 -0.1 11.7 HT1900.1-2455
262.9693 -33.6918 5.6 24.0 129.6 -0.2422 -2.0 8.6 GX 354-0
246.6646 42.8236 2.2 58.7 -10.2 2.9241 5.2 ------ UNKNOWN
235.1476 30.1147 2.6 47.0 -23.4 0.7889 4.5 ------ UNKNOWN
219.2324 28.9876 3.6 51.4 -40.8 1.2948 3.2 ------ UNKNOWN
195.8308 -29.4933 2.7 47.1 -127.3 1.6656 4.3 ------ UNKNOWN
199.0213 -21.5915 2.3 43.9 -116.4 1.8675 5.0 ------ UNKNOWN
195.2385 -30.3810 2.7 47.7 -128.4 1.7530 4.2 ------ UNKNOWN
203.1075 -10.0906 2.8 41.3 -98.8 1.7007 4.2 ------ UNKNOWN
Plot creation:
Sun Aug 8 21:31:51 EDT 2021