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
299.9461 +34.5303 0.0095 31.2 -1.1 3.6788 20.2 TRIG_01219546
------------------------------------------
Foreground time interval of the image:
-12.699 59.080 (delta_t = 71.779 [sec])
61.000 68.750 (delta_t = 7.750 [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
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
-185.656000 -56.650000
-56.000000 59.080000
61.000000 68.750000
74.000000 141.820000
146.000000 168.290000
175.000000 397.550000
399.000000 455.410000
456.000000 528.510000
530.000000 569.704000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.90980 ( -0.0479741 0.0482516 )
Norm@50keV : 2.37016E-03 ( -6.12774e-05 6.11842e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 88.60 using 59 PHA bins.
# Reduced chi-squared = 1.554 for 57 degrees of freedom
# Null hypothesis probability = 4.640621e-03
Photon flux (15-150 keV) in 733.1 sec: 0.341568 ( -0.00972808 0.0097692 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59763e-05 ( -4.10058e-07 4.1046e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-185.656000 -56.650000
-56.000000 59.080000
61.000000 68.750000
74.000000 141.820000
146.000000 168.290000
175.000000 397.550000
399.000000 455.410000
456.000000 528.510000
530.000000 569.704000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.24058 ( -0.230071 0.219051 )
Epeak [keV] : 57.0990 ( -4.44267 6.05597 )
Norm@50keV : 5.03571E-03 ( -0.00108024 0.0014626 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.84 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 56 degrees of freedom
# Null hypothesis probability = 3.719720e-01
Photon flux (15-150 keV) in 733.1 sec: 0.323051 ( -0.01107 0.011145 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.51502e-05 ( -4.8304e-07 4.83919e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-185.656000 -56.650000
-56.000000 59.080000
61.000000 68.750000
74.000000 141.820000
146.000000 168.290000
175.000000 397.550000
399.000000 455.410000
456.000000 528.510000
530.000000 569.704000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.13963 ( -0.280042 0.351084 )
beta : -2.44589 ( 2.44422 0.263301 )
Epeak [keV] : 54.4136 ( -6.33879 7.37122 )
Norm@50keV : 5.73913E-03 ( -0.00160958 0.00321195 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.89 using 59 PHA bins.
# Reduced chi-squared = 1.053 for 55 degrees of freedom
# Null hypothesis probability = 3.689433e-01
Photon flux (15-150 keV) in 733.1 sec: 0.321788 ( 6.67821 -0.011321 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.51486e-05 ( -1.51434e-05 -4.78201e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.0697 ( )
R^2/D10^2 : 5.53569E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 297.89 using 59 PHA bins.
# Reduced chi-squared = 5.2261 for 57 degrees of freedom
# Null hypothesis probability = 2.522744e-34
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.470e-06 7.331e-08
25- 50 5.092e-06 1.602e-07
50-150 5.517e-06 2.940e-07
15-150 1.208e-05 3.446e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 90.8555 (-7.60498 8.77178)
Norm : 1.50332 (-0.0628989 0.0663008)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.876e-06 1.155e-07
25- 50 4.875e-06 1.356e-07
50-150 7.467e-06 3.728e-07
15-150 1.522e-05 4.728e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.30657 (-0.729499 0.820796)
R1^2/D10^2 : 0.520202 (-0.179221 0.305725)
kT2 [keV] : 19.4514 (-1.5779 2.13424)
R2^2/D10^2 : 9.37351E-03 (-0.00342057 0.00419824)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.664e-06 2.745e-07
25- 50 4.870e-06 2.742e-07
50-150 7.185e-06 5.062e-07
15-150 1.472e-05 8.431e-07
Peak spectrum fit
Power-law model
Time interval is from 564.060 sec. to 565.060 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.78244 ( -0.822392 0.978082 )
Norm@50keV : 3.44954E-03 ( -0.00344952 0.00179823 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.99 using 59 PHA bins.
# Reduced chi-squared = 1.386 for 57 degrees of freedom
# Null hypothesis probability = 2.853395e-02
Photon flux (15-150 keV) in 1 sec: 0.472143 ( -0.216915 0.217024 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.17781e-08 ( -1.67359e-08 1.80579e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 564.060 sec. to 565.060 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.03750 ( 2.94767 4.96432 )
Epeak [keV] : 38.7457 ( )
Norm@50keV : 2.83487 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.71 using 59 PHA bins.
# Reduced chi-squared = 1.406 for 56 degrees of freedom
# Null hypothesis probability = 2.436583e-02
Photon flux (15-150 keV) in 1 sec: 0.425714 ( -0.211345 0.248439 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.34991e-08 ( -1.19418e-08 2.49389e-08 ) ergs/cm2
Band function
Time interval is from 564.060 sec. to 565.060 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.57387 ( -4.57387 -4.57387 )
beta : -2.55814 ( 2.55814 1.35999 )
Epeak [keV] : 33.2299 ( -33.2299 59.5021 )
Norm@50keV : 48.5345 ( -21.7487 7.07553e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.37 using 59 PHA bins.
# Reduced chi-squared = 1.425 for 55 degrees of freedom
# Null hypothesis probability = 2.094432e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.56516e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.2102 (-3.65852 6.25171)
R^2/D10^2 : 0.220496 (-0.220496 0.906335)
(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 4.713e-09 3.173e-09
25- 50 1.206e-08 8.030e-09
50-150 6.685e-09 5.860e-09
15-150 2.346e-08 1.642e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 90.3343 (-90.3343 -90.3343)
Norm : 2.16353 (-1.09739 2.48614)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.646e-09 3.746e-09
25- 50 9.557e-09 5.985e-09
50-150 1.459e-08 1.294e-08
15-150 2.979e-08 2.248e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.951499 (-0.946475 14.9202)
R1^2/D10^2 : 3.87882E+05 (-411644 -411644)
kT2 [keV] : 10.5820 (-3.83543 7.35068)
R2^2/D10^2 : 0.187218 (-0.162676 0.812972)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.705e-09 2.933e-09
25- 50 1.167e-08 7.930e-09
50-150 7.158e-09 5.565e-09
15-150 2.353e-08 1.591e-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: 1.84645 ( -0.11215 0.114555 )
Norm@50keV : 2.70421E-03 ( -0.000187144 0.000185257 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.76 using 59 PHA bins.
# Reduced chi-squared = 1.048 for 57 degrees of freedom
# Null hypothesis probability = 3.757633e-01
Photon flux (15-150 keV) in 79.53 sec: 0.379557 ( -0.0239604 0.0239923 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.97759e-06 ( -1.37136e-07 1.38151e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42597 ( -0.511283 0.453791 )
Epeak [keV] : 62.7229 ( -14.9085 -62.7232 )
Norm@50keV : 4.55300E-03 ( -0.00190405 0.00394186 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.30 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 56 degrees of freedom
# Null hypothesis probability = 4.265306e-01
Photon flux (15-150 keV) in 79.53 sec: 0.371802 ( -0.025374 0.025347 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.90625e-06 ( -1.57167e-07 1.58169e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.31752 ( -0.522835 1.31753 )
beta : -2.22197 ( 2.21909 0.407931 )
Epeak [keV] : 56.8169 ( -33.7504 429.255 )
Norm@50keV : 5.28433E-03 ( -0.00201618 195.946 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.86 using 59 PHA bins.
# Reduced chi-squared = 1.034 for 55 degrees of freedom
# Null hypothesis probability = 4.057290e-01
Photon flux (15-150 keV) in 79.53 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9064e-06 ( -1.90584e-06 -1.53835e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.68e-06
S(50-100 keV) = 4.98e-06
T90 vs. Hardness ratio plot
T90 = 648.624000072479 sec.
Hardness ratio (energy fluence ratio) = 1.0641
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.24999
Count Ratio (50-100 keV) / (15-25 keV) = 0.746215
Mask shadow pattern
IMX = 6.054469358168236E-01, IMY = 1.122818486587365E-02
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:
-10.000000 59.080000
61.000000 63.082600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.8191 10.8535 7.1 55.6 -13.5 -0.7991 -1.6 5.7 GRS 1915+105
299.5573 35.3458 6.3 30.9 0.6 0.3151 1.8 8.8 Cyg X-1
308.0017 40.8596 10.7 22.3 1.9 0.1570 1.1 7.4 Cyg X-3
325.9241 38.4069 0.0 13.7 -35.4 -0.2644 -1.9 12.7 Cyg X-2
42.2352 74.5630 3.2 36.3 127.0 1.0893 3.6 ------ UNKNOWN
54.0011 40.5750 2.4 52.5 171.7 2.4922 4.9 ------ UNKNOWN
299.9484 34.5274 0.6 31.2 -1.1 3.3581 20.2 ------ UNKNOWN
301.1799 31.5373 3.0 32.4 -6.6 0.6701 3.8 ------ UNKNOWN
36.7768 19.9668 2.1 55.1 -157.0 3.1734 5.4 ------ UNKNOWN
294.7356 5.3941 2.7 56.8 -23.1 3.0256 4.3 ------ UNKNOWN
25.5585 17.0949 2.4 50.3 -144.5 2.0589 4.7 ------ UNKNOWN
24.7261 13.7353 2.4 52.4 -141.0 3.1925 4.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-12.699400 59.080000
61.000000 68.750000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.8303 10.8600 5.1 55.6 -13.5 -1.2036 -2.3 5.5 GRS 1915+105
299.6576 35.3716 13.4 30.8 0.5 0.1609 0.9 10.7 Cyg X-1
307.9956 40.9195 7.2 22.3 2.1 0.2564 1.6 5.6 Cyg X-3
325.9241 38.4069 0.0 13.7 -35.4 -0.2471 -1.6 12.7 Cyg X-2
14.7898 74.6573 2.5 29.7 122.0 1.0586 4.6 ------ UNKNOWN
299.9461 34.5303 0.6 31.2 -1.1 3.6794 20.2 ------ UNKNOWN
323.6190 45.2807 2.6 10.2 -5.2 0.6535 4.4 ------ UNKNOWN
294.7308 5.4033 3.1 56.8 -23.0 2.8527 3.7 ------ UNKNOWN
25.5660 17.1068 2.3 50.3 -144.5 2.4852 5.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
152.500600 168.290000
175.000000 397.550000
399.000000 455.410000
456.000000 485.000600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4601 35.3444 187.3 36.9 78.2 -0.0937 -0.1 0.2 Her X-1
268.3131 -1.4642 3.6 46.6 19.6 2.9371 3.2 3.4 SW J1753.5-0127
273.9293 -13.9803 5.7 54.4 5.0 -3.1261 -2.0 5.6 GX 17+2
288.8327 11.0697 10.6 25.5 -0.6 -0.6677 -1.1 7.7 GRS 1915+105
299.7685 35.1577 146.9 0.6 142.4 0.0421 0.1 9.1 Cyg X-1
308.1288 40.9359 8.6 9.1 -163.6 -0.6752 -1.3 1.3 Cyg X-3
326.0254 38.2313 42.9 21.3 -134.2 -0.1565 -0.3 8.8 Cyg X-2
304.3752 66.4834 2.1 32.1 156.8 4.0843 5.4 ------ UNKNOWN
299.8486 34.5865 0.5 0.1 107.4 13.2543 24.8 ------ UNKNOWN
289.4067 -20.2082 2.7 55.6 -14.5 6.7523 4.3 ------ UNKNOWN
303.9164 -4.7300 2.3 39.4 -32.8 4.2853 5.1 ------ UNKNOWN
304.9711 -20.4525 2.1 55.2 -32.3 16.5839 5.4 ------ UNKNOWN
Plot creation:
Tue Mar 12 06:32:52 EDT 2024