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
245.3789 -15.6361 0.0134 13.3 -76.7 2.3066 14.3 TRIG_01217729
------------------------------------------
Foreground time interval of the image:
0.000 18.860 (delta_t = 18.860 [sec])
30.000 80.000 (delta_t = 50.000 [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 80.000000
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 80.000000
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 80.000000
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 18.860000
30.000000 80.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.37789 ( -0.485313 0.510091 )
Norm@50keV : 1.43997E-04 ( -5.65312e-05 8.09626e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.86 using 59 PHA bins.
# Reduced chi-squared = 0.8748 for 57 degrees of freedom
# Null hypothesis probability = 7.374626e-01
Photon flux (15-150 keV) in 68.86 sec: 0.319997 ( -0.0330628 0.0331257 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.85996e-07 ( -6.90989e-08 6.91664e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 18.860000
30.000000 80.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.71029E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 227.12 using 59 PHA bins.
# Reduced chi-squared = 4.0557 for 56 degrees of freedom
# Null hypothesis probability = 1.787934e-22
Photon flux (15-150 keV) in 68.86 sec: 0.317342 ( -0.034205 0.025498 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.71366e-07 ( -7.51462e-08 8.05297e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 18.860000
30.000000 80.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.70513 ( 5.46408 8.70513 )
beta : -5.44431 ( -0.460943 0.543307 )
Epeak [keV] : 306.312 ( -306.312 -306.312 )
Norm@50keV : 1.83421E-02 ( -0.00689855 0.0118892 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.91 using 59 PHA bins.
# Reduced chi-squared = 0.9075 for 55 degrees of freedom
# Null hypothesis probability = 6.688736e-01
Photon flux (15-150 keV) in 68.86 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] : 2.75946 (-0.262244 0.304737)
R^2/D10^2 : 76.4694 (-40.3013 85.2492)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.67 using 59 PHA bins.
# Reduced chi-squared = 0.9240 for 57 degrees of freedom
# Null hypothesis probability = 6.381747e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.747e-07 1.802e-07
25- 50 6.196e-08 1.962e-08
50-150 4.913e-11 3.969e-11
15-150 6.367e-07 1.489e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.21288 (-0.746279 0.962372)
Norm : 62.4201 (-28.2683 52.8048)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.728e-07 1.172e-07
25- 50 7.944e-08 2.495e-08
50-150 5.061e-10 3.963e-10
15-150 6.528e-07 1.410e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.47520 (-1.61783 0.399196)
R1^2/D10^2 : 152.757 (-80.4491 2.02664e+06)
kT2 [keV] : 7.56871 (-6.51329 169.053)
R2^2/D10^2 : 5.76401E-02 (-0.0691048 28.0511)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.365e-07 1.071e-07
25- 50 7.024e-08 2.718e-08
50-150 1.629e-08 4.964e-08
15-150 6.230e-07 1.777e-07
Peak spectrum fit
Power-law model
Time interval is from 30.000 sec. to 80.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.37789 ( -0.485313 0.510091 )
Norm@50keV : 1.43997E-04 ( -5.65312e-05 8.09626e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.86 using 59 PHA bins.
# Reduced chi-squared = 0.8748 for 57 degrees of freedom
# Null hypothesis probability = 7.374626e-01
Photon flux (15-150 keV) in 68.86 sec: 0.319997 ( -0.0330628 0.0331257 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.85996e-07 ( -6.90989e-08 6.91664e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 30.000 sec. to 80.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.71029E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 227.12 using 59 PHA bins.
# Reduced chi-squared = 4.0557 for 56 degrees of freedom
# Null hypothesis probability = 1.787934e-22
Photon flux (15-150 keV) in 68.86 sec: 0.317342 ( -0.034205 0.025498 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.71366e-07 ( -7.51462e-08 8.05297e-08 ) ergs/cm2
Band function
Time interval is from 30.000 sec. to 80.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.70513 ( 5.46408 8.70513 )
beta : -5.44431 ( -0.460943 0.543307 )
Epeak [keV] : 306.312 ( -306.312 -306.312 )
Norm@50keV : 1.83421E-02 ( -0.00689855 0.0118892 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.91 using 59 PHA bins.
# Reduced chi-squared = 0.9075 for 55 degrees of freedom
# Null hypothesis probability = 6.688736e-01
Photon flux (15-150 keV) in 68.86 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] : 2.75946 (-0.262244 0.304737)
R^2/D10^2 : 76.4694 (-40.3013 85.2492)
(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 5.747e-07 1.342e-07
25- 50 6.196e-08 1.895e-08
50-150 4.913e-11 3.873e-11
15-150 6.367e-07 1.568e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.21288 (-0.746279 0.962372)
Norm : 62.4201 (-28.2683 52.8048)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.728e-07 1.285e-07
25- 50 7.944e-08 2.332e-08
50-150 5.061e-10 3.801e-10
15-150 6.528e-07 1.564e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.47520 (-1.61783 0.399196)
R1^2/D10^2 : 152.757 (-80.4491 2.02664e+06)
kT2 [keV] : 7.56871 (-6.51329 169.053)
R2^2/D10^2 : 5.76401E-02 (-0.0691048 28.0387)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.365e-07 1.085e-07
25- 50 7.024e-08 2.716e-08
50-150 1.629e-08 6.286e-08
15-150 6.230e-07 1.641e-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: 5.37789 ( -0.485313 0.510091 )
Norm@50keV : 1.43997E-04 ( -5.65312e-05 8.09626e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.86 using 59 PHA bins.
# Reduced chi-squared = 0.8748 for 57 degrees of freedom
# Null hypothesis probability = 7.374626e-01
Photon flux (15-150 keV) in 68.86 sec: 0.319997 ( -0.0330628 0.0331257 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.85996e-07 ( -6.90989e-08 6.91664e-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 : 2.71029E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 227.12 using 59 PHA bins.
# Reduced chi-squared = 4.0557 for 56 degrees of freedom
# Null hypothesis probability = 1.787934e-22
Photon flux (15-150 keV) in 68.86 sec: 0.317342 ( -0.034205 0.025498 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.71366e-07 ( -7.51462e-08 8.05297e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.70513 ( 5.46408 8.70513 )
beta : -5.44431 ( -0.460943 0.543307 )
Epeak [keV] : 306.312 ( -306.312 -306.312 )
Norm@50keV : 1.83421E-02 ( -0.00689855 0.0118892 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.91 using 59 PHA bins.
# Reduced chi-squared = 0.9075 for 55 degrees of freedom
# Null hypothesis probability = 6.688736e-01
Photon flux (15-150 keV) in 68.86 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) = 1.10e-07
S(50-100 keV) = 1.06e-08
T90 vs. Hardness ratio plot
T90 = 80 sec.
Hardness ratio (energy fluence ratio) = 0.0963636
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.169092
Count Ratio (50-100 keV) / (15-25 keV) = 0.00603279
Mask shadow pattern
IMX = 5.442733728818849E-02, IMY = 2.299200004793311E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 80.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 80.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 80.000000
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 18.860000
30.000000 80.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1634 -15.5609 2.6 13.1 -76.5 0.7239 4.5 11.6 Sco X-1
254.5075 35.2352 7.5 48.5 -174.5 0.5855 1.5 6.9 Her X-1
256.1349 -37.7140 5.4 35.2 -49.3 0.5793 2.1 10.5 4U 1700-377
256.3364 -36.5071 6.3 34.4 -51.0 0.4890 1.8 6.9 GX 349+2
263.1748 -24.7492 24.3 32.3 -74.7 0.1359 0.5 9.0 GX 1+4
264.7051 -44.3610 10.7 44.4 -49.4 -0.5189 -1.1 5.6 4U 1735-44
268.4280 -1.6099 10.0 35.5 -117.5 -0.3551 -1.2 10.1 SW J1753.5-0127
270.3494 -25.1726 4.3 38.5 -78.1 1.3104 2.7 6.6 GX 5-1
270.2544 -25.8602 8.6 38.6 -77.0 -0.6696 -1.4 7.5 GRS 1758-258
273.9380 -13.9953 6.4 39.8 -96.5 -1.2354 -1.8 4.7 GX 17+2
263.1933 -33.7097 212.2 36.7 -60.9 -0.0177 -0.1 12.6 GX 354-0
231.4808 32.5687 2.4 41.7 159.9 1.5386 4.8 ------ UNKNOWN
242.0966 44.3646 2.4 54.0 170.1 3.0471 4.9 ------ UNKNOWN
230.4451 -21.6813 1.9 13.0 -4.6 0.8657 6.1 ------ UNKNOWN
254.9062 -49.9288 2.0 44.6 -37.0 2.0450 5.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
134.100600 243.120000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1429 -15.6071 1.5 0.2 87.2 1.7509 7.6 9.7 Sco X-1
254.3604 35.4228 5.3 51.8 -179.9 -1.4846 -2.2 6.8 Her X-1
255.9710 -37.8446 476.1 24.1 -30.0 0.0058 0.0 0.7 4U 1700-377
256.4344 -36.4222 36.9 23.0 -32.5 0.0751 0.3 0.1 GX 349+2
263.0705 -24.8775 6.8 19.0 -67.2 -0.4551 -1.7 8.6 GX 1+4
264.9460 -44.2937 18.6 33.1 -35.2 0.1875 0.6 12.8 4U 1735-44
268.3081 -1.5856 10.4 26.6 -128.8 0.3136 1.1 8.7 SW J1753.5-0127
270.1243 -24.9593 7.7 25.0 -73.3 -0.4575 -1.5 11.3 GX 5-1
270.4218 -25.8627 3.0 25.5 -71.5 -1.1920 -3.8 9.6 GRS 1758-258
273.8536 -13.8954 0.0 27.6 -99.0 -0.2578 -0.7 12.3 GX 17+2
275.7549 -30.3991 6.4 31.5 -65.9 0.7024 1.8 9.0 H1820-303
285.1127 -24.9771 26.0 38.3 -78.5 -0.2853 -0.4 5.4 HT1900.1-2455
263.0479 -33.7994 6.4 24.2 -47.3 0.5130 1.8 3.6 GX 354-0
206.0456 -3.7270 2.8 40.5 93.7 3.2930 4.1 ------ UNKNOWN
258.2126 27.8297 2.5 45.2 -173.1 2.0030 4.6 ------ UNKNOWN
Plot creation:
Wed Feb 28 00:32:13 EST 2024