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
299.7853 +35.6017 0.0084 11.7 163.0 3.6286 23.0 TRIG_01216864
------------------------------------------
Foreground time interval of the image:
-13.699 7.260 (delta_t = 20.959 [sec])
8.000 70.701 (delta_t = 62.701 [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
-86.700000 -56.580500
-55.000000 7.260000
8.000000 180.880000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.73530 ( -0.0645303 0.0649219 )
Norm@50keV : 2.58522E-03 ( -8.94549e-05 8.92277e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.83 using 59 PHA bins.
# Reduced chi-squared = 0.9619 for 57 degrees of freedom
# Null hypothesis probability = 5.570293e-01
Photon flux (15-150 keV) in 265.3 sec: 0.347691 ( -0.0124545 0.0124928 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.3343e-06 ( -2.27235e-07 2.27986e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-86.700000 -56.580500
-55.000000 7.260000
8.000000 180.880000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42510 ( -0.279398 0.261797 )
Epeak [keV] : 91.5711 ( -22.2224 191.24 )
Norm@50keV : 3.69573E-03 ( -0.000941201 0.00137159 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.71 using 59 PHA bins.
# Reduced chi-squared = 0.9055 for 56 degrees of freedom
# Null hypothesis probability = 6.748091e-01
Photon flux (15-150 keV) in 265.3 sec: 0.339809 ( -0.013969 0.014022 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.15745e-06 ( -2.72569e-07 2.71747e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-86.700000 -56.580500
-55.000000 7.260000
8.000000 180.880000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.04568 ( -0.495949 1.31878 )
beta : -1.91004 ( 1.91065 0.145357 )
Epeak [keV] : 57.3852 ( -24.7003 56.8466 )
Norm@50keV : 6.24060E-03 ( -0.00299974 0.0514654 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.35 using 59 PHA bins.
# Reduced chi-squared = 0.8791 for 55 degrees of freedom
# Null hypothesis probability = 7.248089e-01
Photon flux (15-150 keV) in 265.3 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 6.14368e-06 ( -6.14183e-06 -2.58614e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.2932 ( )
R^2/D10^2 : 5.52985E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 216.72 using 59 PHA bins.
# Reduced chi-squared = 3.8022 for 57 degrees of freedom
# Null hypothesis probability = 1.840296e-20
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.495e-07 3.568e-08
25- 50 1.938e-06 7.508e-08
50-150 2.193e-06 1.584e-07
15-150 4.681e-06 1.844e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 122.987 (-16.0515 25.8514)
Norm : 1.46023 (-0.0732184 0.0683055)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.768e-07 6.566e-08
25- 50 1.776e-06 9.829e-08
50-150 3.317e-06 8.179e-07
15-150 6.070e-06 8.636e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.67138 (-0.96889 0.979725)
R1^2/D10^2 : 0.289059 (-0.0907439 0.161398)
kT2 [keV] : 26.8542 (-4.27343 6.6911)
R2^2/D10^2 : 3.07626E-03 (-0.00165989 0.0028806)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.879e-07 8.954e-08
25- 50 1.861e-06 1.519e-07
50-150 3.340e-06 5.197e-07
15-150 6.089e-06 7.309e-07
Peak spectrum fit
Power-law model
Time interval is from -61.792 sec. to -60.792 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93289 ( -0.480136 0.549122 )
Norm@50keV : 4.70312E-03 ( -0.00167754 0.00157954 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.75 using 59 PHA bins.
# Reduced chi-squared = 0.9956 for 57 degrees of freedom
# Null hypothesis probability = 4.844778e-01
Photon flux (15-150 keV) in 1 sec: 0.684568 ( -0.183489 0.183489 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.32614e-08 ( -1.41233e-08 1.49433e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -61.792 sec. to -60.792 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.81310 ( )
Epeak [keV] : 58.4722 ( )
Norm@50keV : 5.56760E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.75 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 56 degrees of freedom
# Null hypothesis probability = 4.468135e-01
Photon flux (15-150 keV) in 1 sec: 0.683251 ( -0.183469 0.184528 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.28048e-08 ( -1.68775e-08 1.52633e-08 ) ergs/cm2
Band function
Time interval is from -61.792 sec. to -60.792 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -2.15194 ( -1.05004 0.588403 )
Epeak [keV] : 22.4067 ( -22.4079 84.1337 )
Norm@50keV : 1581.58 ( -417.01 7.60479e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.58 using 59 PHA bins.
# Reduced chi-squared = 1.011 for 55 degrees of freedom
# Null hypothesis probability = 4.526247e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.16262e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.66350 (-3.23268 4.03381)
R^2/D10^2 : 0.368376 (-0.269371 1.34787)
(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 6.918e-09 3.903e-09
25- 50 1.637e-08 9.570e-09
50-150 7.733e-09 5.765e-09
15-150 3.103e-08 1.906e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 69.1749 (-38.9277 -69.1749)
Norm : 3.40141 (-1.16572 2.07904)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.715e-09 3.913e-09
25- 50 1.382e-08 8.290e-09
50-150 1.760e-08 1.479e-08
15-150 4.013e-08 2.586e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.77024 (-2.25471 29.5702)
R1^2/D10^2 : 3.77346 (-3.29054 61.847)
kT2 [keV] : 16.5568 (-6.99045 -16.4882)
R2^2/D10^2 : 3.44407E-02 (-0.0343926 0.307526)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.510e-09 5.345e-09
25- 50 1.278e-08 6.830e-09
50-150 1.641e-08 1.066e-08
15-150 3.870e-08 2.061e-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: 1.77007 ( -0.0912275 0.0923499 )
Norm@50keV : 2.68135E-03 ( -0.000140279 0.000139357 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.79 using 59 PHA bins.
# Reduced chi-squared = 0.8911 for 57 degrees of freedom
# Null hypothesis probability = 7.057561e-01
Photon flux (15-150 keV) in 83.66 sec: 0.365284 ( -0.0181956 0.0182299 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.06769e-06 ( -1.11357e-07 1.12112e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47966 ( -0.394653 0.328801 )
Epeak [keV] : 84.1368 ( -25.0513 -84.1376 )
Norm@50keV : 3.81030E-03 ( -0.00120342 0.00228277 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.91 using 59 PHA bins.
# Reduced chi-squared = 0.8733 for 56 degrees of freedom
# Null hypothesis probability = 7.379497e-01
Photon flux (15-150 keV) in 83.66 sec: 0.358834 ( -0.019789 0.019792 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.00981e-06 ( -1.32902e-07 1.32785e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.13303 ( -0.592611 4.12496 )
beta : -1.96558 ( 1.96488 0.20556 )
Epeak [keV] : 54.9515 ( -24.9 169.993 )
Norm@50keV : 6.19993E-03 ( -0.00353839 12.9579 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.43 using 59 PHA bins.
# Reduced chi-squared = 0.8623 for 55 degrees of freedom
# Null hypothesis probability = 7.560511e-01
Photon flux (15-150 keV) in 83.66 sec: 0.356026 ( 6.64397 -0.019908 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.00444e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.74e-06
S(50-100 keV) = 2.09e-06
T90 vs. Hardness ratio plot
T90 = 242.43599998951 sec.
Hardness ratio (energy fluence ratio) = 1.20115
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.21885
Count Ratio (50-100 keV) / (15-25 keV) = 0.72542
Mask shadow pattern
IMX = -1.983274966181967E-01, IMY = -6.060454469409742E-02
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:
-13.699390 7.260000
8.000000 70.700590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5632 35.4405 6.6 35.4 76.1 0.6843 1.7 7.8 Her X-1
262.9089 -24.7203 529.4 58.1 -7.0 -0.0204 -0.0 5.7 GX 1+4
268.4898 -1.4886 4.2 36.2 6.3 -0.6165 -2.8 7.6 SW J1753.5-0127
270.1724 -25.0452 4.7 55.1 -14.0 1.2444 2.5 6.4 GX 5-1
270.2361 -25.7207 13.4 55.7 -14.5 0.4742 0.9 3.8 GRS 1758-258
273.9494 -13.9327 14.1 43.6 -11.6 0.2190 0.8 7.0 GX 17+2
275.8303 -30.3453 14.0 58.0 -22.0 0.7071 0.8 5.1 H1820-303
285.0708 -24.7784 4.1 50.5 -30.0 -1.3433 -2.8 8.7 HT1900.1-2455
288.8870 11.0671 10.3 14.7 -20.3 0.1707 1.1 9.0 GRS 1915+105
299.5852 35.4104 0.0 11.5 162.7 0.8270 5.2 12.5 Cyg X-1
308.2347 40.9398 6.3 19.9 172.4 0.2938 1.8 5.7 Cyg X-3
326.2229 38.1902 11.9 30.2 -164.3 0.1767 1.0 8.2 Cyg X-2
244.4729 12.5485 3.1 48.3 44.0 2.1901 3.7 ------ UNKNOWN
2.3876 54.8281 2.1 57.5 178.8 4.5713 5.6 ------ UNKNOWN
279.2632 -12.2900 2.4 40.0 -17.7 1.1437 4.9 ------ UNKNOWN
331.3748 24.5958 2.2 33.8 -138.0 1.1943 5.3 ------ UNKNOWN
286.2054 -29.6763 2.4 55.2 -32.3 4.0604 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
114.700590 350.350000
351.000000 495.140000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5197 35.4624 8.4 36.5 56.9 1.9943 1.4 7.8 Her X-1
268.3917 -1.5895 6.3 47.3 -1.5 1.9742 1.8 8.3 SW J1753.5-0127
273.9739 -14.0468 6.1 55.3 -15.6 -3.4026 -1.9 2.0 GX 17+2
288.7418 11.0394 9.6 26.5 -21.7 0.7220 1.2 6.5 GRS 1915+105
299.6854 35.3376 1.5 0.3 -30.1 4.2298 7.6 9.4 Cyg X-1
308.0553 40.9224 8.7 8.4 -178.4 0.7371 1.3 3.1 Cyg X-3
326.2507 38.1934 50.5 21.3 -151.5 -0.1281 -0.2 8.5 Cyg X-2
22.6008 67.1152 2.5 54.9 161.6 10.0008 4.6 ------ UNKNOWN
268.4217 -14.7671 2.4 58.5 -10.4 15.2653 4.7 ------ UNKNOWN
283.3684 -10.1321 2.9 48.3 -24.7 4.6787 4.1 ------ UNKNOWN
287.5003 -18.3516 2.1 55.2 -32.3 17.4658 5.4 ------ UNKNOWN
Plot creation:
Fri Feb 23 13:20:11 EST 2024