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
300.6332 +34.4245 0.0091 0.2 97.0 2.8013 21.2 TRIG_01218695
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.61999 ( -0.101697 0.102651 )
Norm@50keV : 2.72221E-03 ( -0.000163197 0.000162346 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.69 using 59 PHA bins.
# Reduced chi-squared = 1.293 for 57 degrees of freedom
# Null hypothesis probability = 6.761476e-02
Photon flux (15-150 keV) in 64 sec: 0.352017 ( -0.0203787 0.0204021 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.62552e-06 ( -1.04414e-07 1.05203e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.13053 ( -0.476419 0.427219 )
Epeak [keV] : 84.1628 ( -21.085 208.671 )
Norm@50keV : 4.91406E-03 ( -0.00194344 0.00373475 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.84 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 56 degrees of freedom
# Null hypothesis probability = 1.011584e-01
Photon flux (15-150 keV) in 64 sec: 0.343051 ( -0.021826 0.021773 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55138e-06 ( -1.22515e-07 1.23187e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.895775 ( -0.571559 2.64052 )
beta : -1.96917 ( 1.96917 0.336125 )
Epeak [keV] : 66.6096 ( -35.1666 59.2087 )
Norm@50keV : 6.78643E-03 ( -0.00350114 0.497163 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.75 using 59 PHA bins.
# Reduced chi-squared = 1.250 for 55 degrees of freedom
# Null hypothesis probability = 1.007170e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55574e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.2882 ( )
R^2/D10^2 : 5.91997E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 121.50 using 59 PHA bins.
# Reduced chi-squared = 2.1316 for 57 degrees of freedom
# Null hypothesis probability = 1.435994e-06
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.418e-07 1.514e-08
25- 50 5.000e-07 3.341e-08
50-150 5.652e-07 7.203e-08
15-150 1.207e-06 8.576e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 159.776 (-40.8787 -159.322)
Norm : 1.44538 (-0.0910679 0.106787)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.362e-07 1.875e-08
25- 50 4.418e-07 6.106e-08
50-150 8.946e-07 3.332e-07
15-150 1.573e-06 3.696e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.61835 (-1.77752 1.96743)
R1^2/D10^2 : 0.283078 (-0.130794 0.486125)
kT2 [keV] : 25.0901 (-6.04284 17.2676)
R2^2/D10^2 : 4.30755E-03 (-0.00348816 0.00834818)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.130e-07 4.493e-08
25- 50 4.646e-07 9.920e-08
50-150 8.634e-07 3.413e-07
15-150 1.541e-06 4.566e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.61999 ( -0.101697 0.102651 )
Norm@50keV : 2.72221E-03 ( -0.000163197 0.000162346 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.69 using 59 PHA bins.
# Reduced chi-squared = 1.293 for 57 degrees of freedom
# Null hypothesis probability = 6.761476e-02
Photon flux (15-150 keV) in 64 sec: 0.352017 ( -0.0203787 0.0204021 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.62552e-06 ( -1.04414e-07 1.05203e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.13053 ( -0.476419 0.427219 )
Epeak [keV] : 84.1628 ( -21.085 208.671 )
Norm@50keV : 4.91406E-03 ( -0.00194344 0.00373475 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.84 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 56 degrees of freedom
# Null hypothesis probability = 1.011584e-01
Photon flux (15-150 keV) in 64 sec: 0.343051 ( -0.021826 0.021773 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55138e-06 ( -1.22515e-07 1.23187e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.895775 ( -0.571563 2.64052 )
beta : -1.96917 ( 1.96917 0.336125 )
Epeak [keV] : 66.6096 ( -35.1666 59.2087 )
Norm@50keV : 6.78643E-03 ( -0.00350114 0.497163 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.75 using 59 PHA bins.
# Reduced chi-squared = 1.250 for 55 degrees of freedom
# Null hypothesis probability = 1.007170e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55574e-06 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.2882 ( )
R^2/D10^2 : 5.91997E-02 ( )
(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 1.418e-07 1.411e-08
25- 50 5.000e-07 3.421e-08
50-150 5.652e-07 6.627e-08
15-150 1.207e-06 8.448e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 159.776 (-40.8787 -159.322)
Norm : 1.44538 (-0.0910679 0.106787)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.362e-07 1.978e-08
25- 50 4.418e-07 5.709e-08
50-150 8.946e-07 3.481e-07
15-150 1.573e-06 3.898e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.61835 (-1.77752 1.96743)
R1^2/D10^2 : 0.283078 (-0.130794 0.486125)
kT2 [keV] : 25.0901 (-6.04284 17.2676)
R2^2/D10^2 : 4.30755E-03 (-0.00348816 0.00834818)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.130e-07 5.158e-08
25- 50 4.646e-07 9.632e-08
50-150 8.634e-07 3.861e-07
15-150 1.541e-06 4.541e-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: 1.61999 ( -0.101697 0.102651 )
Norm@50keV : 2.72221E-03 ( -0.000163197 0.000162346 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.69 using 59 PHA bins.
# Reduced chi-squared = 1.293 for 57 degrees of freedom
# Null hypothesis probability = 6.761476e-02
Photon flux (15-150 keV) in 64 sec: 0.352017 ( -0.0203787 0.0204021 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.62552e-06 ( -1.04414e-07 1.05203e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.13053 ( -0.476419 0.427219 )
Epeak [keV] : 84.1628 ( -21.085 208.671 )
Norm@50keV : 4.91406E-03 ( -0.00194344 0.00373475 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.84 using 59 PHA bins.
# Reduced chi-squared = 1.247 for 56 degrees of freedom
# Null hypothesis probability = 1.011584e-01
Photon flux (15-150 keV) in 64 sec: 0.343051 ( -0.021826 0.021773 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55138e-06 ( -1.22515e-07 1.23187e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.895775 ( -0.571555 2.64052 )
beta : -1.96917 ( 1.96917 0.336125 )
Epeak [keV] : 66.6096 ( -35.1666 59.2087 )
Norm@50keV : 6.78643E-03 ( -0.00350114 0.497163 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.75 using 59 PHA bins.
# Reduced chi-squared = 1.250 for 55 degrees of freedom
# Null hypothesis probability = 1.007170e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.55574e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.25e-07
S(50-100 keV) = 5.53e-07
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 1.30118
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.4996
Count Ratio (50-100 keV) / (15-25 keV) = 0.933491
Mask shadow pattern
IMX = -4.396180675588019E-04, IMY = -3.591804270261090E-03
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 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3066 35.4094 9.9 37.8 71.5 -0.4906 -1.2 8.4 Her X-1
268.3672 -1.5357 118.0 47.0 13.3 0.0270 0.1 5.0 SW J1753.5-0127
274.0652 -14.0918 6.5 54.7 -1.5 0.7718 1.8 4.8 GX 17+2
288.7656 10.8919 8.9 25.9 -5.8 -0.1846 -1.3 3.8 GRS 1915+105
299.5852 35.0253 12.9 1.3 92.4 0.1184 0.9 10.6 Cyg X-1
308.0186 40.8162 54.2 8.7 -174.8 0.0263 0.2 9.2 Cyg X-3
325.9182 38.3335 0.0 20.6 -142.5 0.3472 2.7 12.0 Cyg X-2
300.6312 34.4284 0.5 0.2 97.5 2.7475 21.1 ------ UNKNOWN
10.5765 36.4523 2.6 55.6 -147.7 3.3276 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
78.400600 243.134300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4776 35.3326 155.5 37.5 71.3 -0.0707 -0.1 1.1 Her X-1
268.2615 -1.5584 117.4 47.1 13.2 -0.0540 -0.1 9.0 SW J1753.5-0127
274.0562 -14.1235 159.0 54.7 -1.6 -0.0575 -0.1 6.0 GX 17+2
288.8052 11.0702 8.0 25.7 -6.2 -0.4502 -1.5 7.5 GRS 1915+105
299.6435 34.9940 0.0 1.0 91.7 0.3653 1.3 12.7 Cyg X-1
308.1627 41.1105 8.6 8.9 -174.3 -0.3535 -1.3 9.8 Cyg X-3
326.2627 38.2867 6.3 20.9 -141.8 -0.5269 -1.8 4.8 Cyg X-2
249.0699 43.1251 2.3 40.5 84.5 5.7424 5.0 ------ UNKNOWN
297.0484 73.8005 2.5 39.4 144.7 2.9223 4.6 ------ UNKNOWN
300.6030 34.4233 0.5 0.0 41.0 6.0583 21.8 ------ UNKNOWN
273.5058 -14.2258 2.9 55.1 -1.1 3.3705 4.0 ------ UNKNOWN
20.1499 46.4663 2.9 59.1 -161.6 7.6328 4.0 ------ UNKNOWN
299.3194 -20.7654 2.2 55.2 -32.3 8.6626 5.3 ------ UNKNOWN
Plot creation:
Tue Mar 5 19:17:12 EST 2024