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
245.0244 -15.7878 0.0099 29.1 -19.4 2.5196 19.5 TRIG_01186280
------------------------------------------
Foreground time interval of the image:
0.000 26.080 (delta_t = 26.080 [sec])
27.000 64.000 (delta_t = 37.000 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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 64.000000
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 64.000000
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 26.080000
27.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.79636 ( -0.48738 0.509717 )
Norm@50keV : 1.22032E-04 ( -4.8103e-05 6.98577e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.37 using 59 PHA bins.
# Reduced chi-squared = 1.077 for 57 degrees of freedom
# Null hypothesis probability = 3.221211e-01
Photon flux (15-150 keV) in 63.08 sec: 0.409679 ( -0.0423946 0.0424858 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.84457e-07 ( -7.77802e-08 7.77865e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 26.080000
27.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.57336E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 265.80 using 59 PHA bins.
# Reduced chi-squared = 4.7464 for 56 degrees of freedom
# Null hypothesis probability = 4.766817e-29
Photon flux (15-150 keV) in 63.08 sec: 0.405250 ( -0.044226 0.043633 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.61161e-07 ( -8.17517e-08 8.24456e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 26.080000
27.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.59059 ( )
beta : -6.92656 ( )
Epeak [keV] : 22.4397 ( )
Norm@50keV : 2.50375E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 227.00 using 59 PHA bins.
# Reduced chi-squared = 4.1272 for 55 degrees of freedom
# Null hypothesis probability = 9.119780e-23
Photon flux (15-150 keV) in 63.08 sec: 0.350355 ( ) 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] : 2.57442 (-0.219844 0.252285)
R^2/D10^2 : 161.382 (-82.205 166.976)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.23 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 57 degrees of freedom
# Null hypothesis probability = 3.266394e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.892e-07 1.500e-07
25- 50 5.696e-08 1.791e-08
50-150 2.389e-11 1.925e-11
15-150 7.462e-07 1.732e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.63384 (-0.597841 0.741371)
Norm : 124.181 (-55.7976 103.983)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.856e-07 1.333e-07
25- 50 7.257e-08 2.366e-08
50-150 2.527e-10 2.001e-10
15-150 7.585e-07 1.591e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.08946 (-6.77769 14.1072)
R1^2/D10^2 : 2.12040E-02 (-0.0230522 71.7546)
kT2 [keV] : 2.43114 (-0.513319 0.291918)
R2^2/D10^2 : 237.098 (-141.421 878.293)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.888e-07 8.576e-02
25- 50 5.799e-08 7.828e-01
50-150 2.850e-11 9.563e+00
15-150 7.468e-07 1.396e+01
Peak spectrum fit
Power-law model
Time interval is from 27.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.79636 ( -0.48738 0.509717 )
Norm@50keV : 1.22032E-04 ( -4.8103e-05 6.98577e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.37 using 59 PHA bins.
# Reduced chi-squared = 1.077 for 57 degrees of freedom
# Null hypothesis probability = 3.221211e-01
Photon flux (15-150 keV) in 63.08 sec: 0.409679 ( -0.0423946 0.0424858 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.84457e-07 ( -7.77802e-08 7.77865e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 27.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.57336E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 265.80 using 59 PHA bins.
# Reduced chi-squared = 4.7464 for 56 degrees of freedom
# Null hypothesis probability = 4.766817e-29
Photon flux (15-150 keV) in 63.08 sec: 0.405250 ( -0.044226 0.043633 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.61161e-07 ( -8.17517e-08 8.24456e-08 ) ergs/cm2
Band function
Time interval is from 27.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.59059 ( )
beta : -6.92656 ( )
Epeak [keV] : 22.4397 ( )
Norm@50keV : 2.50375E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 227.00 using 59 PHA bins.
# Reduced chi-squared = 4.1272 for 55 degrees of freedom
# Null hypothesis probability = 9.119780e-23
Photon flux (15-150 keV) in 63.08 sec: 0.350355 ( ) 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] : 2.57442 (-0.219844 0.252285)
R^2/D10^2 : 161.382 (-82.205 166.976)
(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 6.892e-07 1.844e-07
25- 50 5.696e-08 1.789e-08
50-150 2.389e-11 1.976e-11
15-150 7.462e-07 2.108e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.63384 (-0.597841 0.741371)
Norm : 124.181 (-55.7976 103.983)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.856e-07 1.371e-07
25- 50 7.257e-08 1.982e-08
50-150 2.527e-10 1.982e-10
15-150 7.585e-07 1.785e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.08946 (-5.67661 14.1082)
R1^2/D10^2 : 2.12040E-02 (-0.0230522 71.7546)
kT2 [keV] : 2.43114 (-0.513392 0.291917)
R2^2/D10^2 : 237.098 (-141.421 878.38)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.888e-07 9.292e-02
25- 50 5.799e-08 8.591e-01
50-150 2.850e-11 9.402e+00
15-150 7.468e-07 1.365e+01
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: 5.79636 ( -0.48738 0.509717 )
Norm@50keV : 1.22032E-04 ( -4.8103e-05 6.98577e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.37 using 59 PHA bins.
# Reduced chi-squared = 1.077 for 57 degrees of freedom
# Null hypothesis probability = 3.221211e-01
Photon flux (15-150 keV) in 63.08 sec: 0.409679 ( -0.0423946 0.0424858 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.84457e-07 ( -7.77802e-08 7.77865e-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 : 2.57336E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 265.80 using 59 PHA bins.
# Reduced chi-squared = 4.7464 for 56 degrees of freedom
# Null hypothesis probability = 4.766817e-29
Photon flux (15-150 keV) in 63.08 sec: 0.405250 ( -0.044226 0.043633 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.61161e-07 ( -8.17517e-08 8.24456e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.59059 ( )
beta : -6.92656 ( )
Epeak [keV] : 22.4397 ( )
Norm@50keV : 2.50375E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 227.00 using 59 PHA bins.
# Reduced chi-squared = 4.1272 for 55 degrees of freedom
# Null hypothesis probability = 9.119780e-23
Photon flux (15-150 keV) in 63.08 sec: 0.350355 ( ) 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) = 1.05e-07
S(50-100 keV) = 7.54e-09
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0718095
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.123829
Count Ratio (50-100 keV) / (15-25 keV) = -0.00993528
Mask shadow pattern
IMX = 5.255633268165115E-01, IMY = 1.850245245841289E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 26.080000
27.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6880 -62.5441 0.0 46.8 -129.8 -0.0657 -0.1 13.6 GX 301-2
245.0240 -15.7839 0.6 29.1 -19.4 2.5205 19.5 9.0 Sco X-1
256.1082 -37.9744 1.8 5.0 -32.5 0.7290 6.4 9.7 4U 1700-377
256.6025 -36.5510 13.6 6.0 -20.4 0.0957 0.9 11.1 GX 349+2
263.1301 -24.7040 8.5 17.0 20.5 0.1655 1.4 7.1 GX 1+4
264.6118 -44.3285 62.1 4.0 147.3 -0.0203 -0.2 9.2 4U 1735-44
268.4213 -1.3908 5.5 40.8 24.7 -0.4992 -2.1 4.9 SW J1753.5-0127
270.2631 -25.1736 3.7 18.3 41.6 0.4034 3.1 5.8 GX 5-1
270.1664 -25.7419 9.6 17.7 42.1 0.1634 1.3 7.4 GRS 1758-258
273.8398 -14.0119 13.7 29.9 39.2 -0.1552 -0.8 9.8 GX 17+2
275.9551 -30.5031 7.1 16.6 65.6 0.2119 1.6 8.3 H1820-303
284.9580 -25.1025 0.0 26.0 71.0 0.1091 0.6 11.7 HT1900.1-2455
263.1685 -33.8167 8.2 8.0 27.9 0.1609 1.4 9.0 GX 354-0
237.4615 2.4495 2.4 48.8 -18.7 1.2762 4.9 ------ UNKNOWN
145.5456 -76.8288 3.0 55.0 -152.6 1.7704 3.8 ------ UNKNOWN
221.8026 -16.3920 2.2 41.8 -51.9 1.3725 5.2 ------ UNKNOWN
184.0167 -62.0016 2.6 48.1 -129.4 2.6395 4.4 ------ UNKNOWN
203.8839 -43.0627 2.1 41.2 -99.0 3.1517 5.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
143.800600 191.600590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0105 -15.7760 0.7 0.1 -47.1 1.7613 17.3 8.3 Sco X-1
254.3393 35.3281 13.3 51.9 -0.7 0.2326 0.9 5.9 Her X-1
256.0390 -37.9930 3.8 24.2 148.2 0.3556 3.1 9.3 4U 1700-377
256.6181 -36.3941 11.2 23.0 145.3 0.1139 1.0 9.0 GX 349+2
263.1867 -24.6110 0.0 19.1 109.9 -0.1595 -1.3 12.6 GX 1+4
264.9253 -44.5081 12.0 33.2 143.4 0.1457 1.0 8.6 4U 1735-44
268.2984 -1.2974 5.4 27.1 49.6 0.2862 2.1 10.2 SW J1753.5-0127
270.3352 -24.9425 6.1 25.3 104.9 -0.2742 -1.9 8.7 GX 5-1
270.4608 -25.8782 0.0 25.7 106.9 0.2318 1.6 11.8 GRS 1758-258
274.0557 -13.9918 10.9 28.1 79.8 0.1619 1.1 3.9 GX 17+2
276.0727 -30.4854 15.0 31.9 112.5 0.1340 0.8 10.4 H1820-303
285.0564 -24.8156 19.5 38.4 99.8 0.1864 0.6 6.4 HT1900.1-2455
262.9923 -33.8349 103.3 24.2 131.0 0.0137 0.1 0.2 GX 354-0
228.5187 11.1509 2.0 31.5 -42.6 0.7215 5.7 ------ UNKNOWN
210.9597 -18.5505 3.5 32.6 -110.2 0.5097 3.3 ------ UNKNOWN
194.8663 -31.9731 3.4 48.2 -129.4 1.4562 3.4 ------ UNKNOWN
Plot creation:
Mon Aug 21 20:39:30 EDT 2023