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
103.7943 -1.5074 0.0342 25.4 -74.9 5.3350 5.6 TRIG_01114077
------------------------------------------
Foreground time interval of the image:
-184.000 -56.890 (delta_t = 127.110 [sec])
-56.000 49.610 (delta_t = 105.610 [sec])
51.000 145.000 (delta_t = 94.000 [sec])
Background time interval of the image:
-239.000 -184.000 (delta_t = 55.000 [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
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
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.95118 ( )
Norm@50keV : 8.84749E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 126.72 using 59 PHA bins.
# Reduced chi-squared = 2.2232 for 57 degrees of freedom
# Null hypothesis probability = 3.258625e-07
Photon flux (15-150 keV) in 326.7 sec: 0.234873 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.39742e-06 ( 0 0 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.06512 ( -1.54476 1.18848 )
Epeak [keV] : 22.9661 ( -2.46934 1.87804 )
Norm@50keV : 0.493172 ( -0.751979 7.06684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.55 using 59 PHA bins.
# Reduced chi-squared = 1.170 for 56 degrees of freedom
# Null hypothesis probability = 1.794296e-01
Photon flux (15-150 keV) in 326.7 sec: 0.214927 ( -0.014709 0.014729 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.8296e-06 ( -1.9567e-07 2.01515e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.29253 ( -1.16928 1.99437 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 23.2605 ( -2.51892 1.91338 )
Norm@50keV : 0.720571 ( -0.720545 7.15496 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.31 using 59 PHA bins.
# Reduced chi-squared = 1.187 for 55 degrees of freedom
# Null hypothesis probability = 1.610708e-01
Photon flux (15-150 keV) in 326.7 sec: 0.215784 ( 6.78422 -0.014678 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.88785e-06 ( -1.88556e-06 -1.73893e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.08814 (-0.330645 0.349652)
R^2/D10^2 : 0.799088 (-0.182166 0.237976)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.62 using 59 PHA bins.
# Reduced chi-squared = 1.151 for 57 degrees of freedom
# Null hypothesis probability = 2.028534e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.313e-06 1.250e-07
25- 50 1.351e-06 1.098e-07
50-150 1.313e-07 3.540e-08
15-150 2.795e-06 1.877e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.8275 (-2.09116 2.44183)
Norm : 2.87968 (-0.409927 0.484538)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.448e-06 1.130e-07
25- 50 1.260e-06 9.523e-08
50-150 3.719e-07 9.468e-08
15-150 3.080e-06 2.034e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.36535 (-5.34532 -5.34532)
R1^2/D10^2 : 0.833263 (-0.82291 -0.82291)
kT2 [keV] : 7.22318 (-7.13168 -7.13168)
R2^2/D10^2 : 0.162940 (-0.194866 0.824673)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.331e-06 1.696e-05
25- 50 1.344e-06 5.363e-05
50-150 1.623e-07 1.039e-04
15-150 2.837e-06 1.368e-04
Peak spectrum fit
Power-law model
Time interval is from 29.000 sec. to 30.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.55021 ( -0.535554 0.692211 )
Norm@50keV : 3.55940E-03 ( -0.001711 0.00178816 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.64 using 59 PHA bins.
# Reduced chi-squared = 1.310 for 57 degrees of freedom
# Null hypothesis probability = 5.838303e-02
Photon flux (15-150 keV) in 1 sec: 0.721301 ( -0.190292 0.191248 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.60948e-08 ( -1.23315e-08 1.39494e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 29.000 sec. to 30.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.13282 ( )
Epeak [keV] : 18.9823 ( )
Norm@50keV : 3.36509E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.89 using 59 PHA bins.
# Reduced chi-squared = 1.319 for 56 degrees of freedom
# Null hypothesis probability = 5.486561e-02
Photon flux (15-150 keV) in 1 sec: 0.706424 ( -0.184168 0.188225 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.15336e-08 ( -1.07179e-08 1.62706e-08 ) ergs/cm2
Band function
Time interval is from 29.000 sec. to 30.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.87525 ( -4.87525 -4.87525 )
beta : -3.21710 ( -3.45443 0.947949 )
Epeak [keV] : 21.8988 ( -21.8988 4.85691 )
Norm@50keV : 2020.54 ( -510.808 1.75929e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.26 using 59 PHA bins.
# Reduced chi-squared = 1.332 for 55 degrees of freedom
# Null hypothesis probability = 5.039104e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.47047e-08 ( -1.46977e-08 -1.7588e-09 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.13653 (-1.65203 2.32637)
R^2/D10^2 : 2.42267 (-2.41816 6.96092)
(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 1.251e-08 7.355e-09
25- 50 1.310e-08 7.928e-09
50-150 1.314e-09 1.304e-09
15-150 2.692e-08 1.609e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 26.8656 (-12.3852 27.976)
Norm : 6.47674 (-2.80259 6.23024)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.240e-08 4.797e-09
25- 50 1.330e-08 7.230e-09
50-150 6.269e-09 5.234e-09
15-150 3.197e-08 1.739e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.0077 (-11.9775 -11.9775)
R1^2/D10^2 : 7.96477E-02 (-0.0804576 5.06878)
kT2 [keV] : 4.47098 (-4.46781 2.87131)
R2^2/D10^2 : 6.83665 (-6.85567 -6.85567)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.261e-08 7.770e-09
25- 50 1.236e-08 7.420e-09
50-150 6.253e-09 4.393e-09
15-150 3.122e-08 1.695e-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: 2.95118 ( )
Norm@50keV : 8.84749E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 126.72 using 59 PHA bins.
# Reduced chi-squared = 2.2232 for 57 degrees of freedom
# Null hypothesis probability = 3.258625e-07
Photon flux (15-150 keV) in 326.7 sec: 0.234873 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.39742e-06 ( 0 0 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.06512 ( -1.54476 1.18848 )
Epeak [keV] : 22.9661 ( -2.46934 1.87804 )
Norm@50keV : 0.493172 ( -0.751979 7.06684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.55 using 59 PHA bins.
# Reduced chi-squared = 1.170 for 56 degrees of freedom
# Null hypothesis probability = 1.794296e-01
Photon flux (15-150 keV) in 326.7 sec: 0.214927 ( -0.014709 0.014729 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.8296e-06 ( -1.9567e-07 2.01515e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.29253 ( -1.16928 1.99437 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 23.2605 ( -2.51892 1.91338 )
Norm@50keV : 0.720571 ( -0.720545 7.15496 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.31 using 59 PHA bins.
# Reduced chi-squared = 1.187 for 55 degrees of freedom
# Null hypothesis probability = 1.610708e-01
Photon flux (15-150 keV) in 326.7 sec: 0.215784 ( 6.78422 -0.014644 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.80403e-06 ( -4.80174e-06 -5.746e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.14e-06
S(50-100 keV) = 5.88e-07
T90 vs. Hardness ratio plot
T90 = 274 sec.
Hardness ratio (energy fluence ratio) = 0.515789
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.744156
Count Ratio (50-100 keV) / (15-25 keV) = 0.037808
Mask shadow pattern
IMX = 1.231845833640946E-01, IMY = 4.581004972977459E-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:
-239.000000 -184.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5382 -40.6701 6.4 37.9 26.1 0.5027 1.8 6.9 Vela X-1
139.9163 -26.8201 3.0 41.3 4.2 1.0147 3.8 ------ UNKNOWN
80.5579 -7.7408 2.1 21.4 -137.3 1.0085 5.5 ------ UNKNOWN
69.4530 1.8825 2.4 35.8 -143.6 1.1458 4.9 ------ UNKNOWN
86.9681 1.2108 2.8 27.0 -114.0 0.8787 4.2 ------ UNKNOWN
80.6316 11.0385 2.7 38.3 -120.0 1.5983 4.4 ------ UNKNOWN
122.2808 11.1753 2.7 45.6 -57.9 3.5520 4.3 ------ UNKNOWN
70.7192 17.3933 2.6 48.0 -129.0 3.5633 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.6310 -40.6590 133.6 38.0 26.1 -0.1018 -0.1 7.8 Vela X-1
82.1591 -63.3117 2.4 39.1 89.6 12.9492 4.9 ------ UNKNOWN
134.5381 -15.8102 3.0 39.1 -14.3 3.7510 3.9 ------ UNKNOWN
70.8856 -4.5985 2.4 30.0 -149.7 3.8060 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
376.800600 516.610000
518.000000 519.350000
521.000000 640.910000
642.000000 768.830000
770.000000 808.600000
810.000000 963.070200
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5113 -40.5226 5.8 37.2 -118.0 3.1811 2.0 2.1 Vela X-1
170.2690 -60.6419 1.7 22.2 -171.8 5.0389 7.0 1.8 Cen X-3
186.3065 -62.8641 4.1 22.5 167.3 2.1832 2.9 11.1 GX 301-2
254.5158 -77.2971 3.3 46.3 152.3 9.1897 3.5 ------ UNKNOWN
190.7489 4.9601 2.5 45.6 -3.1 5.5004 4.7 ------ UNKNOWN
184.6740 -5.0213 4.2 35.4 -11.7 2.5150 2.8 ------ UNKNOWN
184.4791 11.5180 3.0 51.9 -11.8 5.4044 3.9 ------ UNKNOWN
149.1456 -40.8476 2.4 27.0 -114.0 4.0137 4.8 ------ UNKNOWN
152.2860 -6.8844 2.9 44.4 -61.1 13.8929 4.0 ------ UNKNOWN
Plot creation:
Sat Jul 2 16:18:07 EDT 2022