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
300.8665 +34.9632 0.0067 16.6 10.1 22.9406 28.7 TRIG_01215690
------------------------------------------
Foreground time interval of the image:
-10.000 40.160 (delta_t = 50.160 [sec])
41.000 102.310 (delta_t = 61.310 [sec])
103.000 494.596 (delta_t = 391.596 [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
-115.656000 -56.190000
-10.000000 40.160000
41.000000 102.310000
103.000000 494.596000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.86531 ( -0.057037 0.0574251 )
Norm@50keV : 2.05499E-03 ( -6.28563e-05 6.26881e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.56 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.488118e-01
Photon flux (15-150 keV) in 562.5 sec: 0.290666 ( -0.00931818 0.00935327 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.0627e-05 ( -3.25545e-07 3.26273e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-115.656000 -56.190000
-10.000000 40.160000
41.000000 102.310000
103.000000 494.596000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.44233 ( -0.257937 0.243158 )
Epeak [keV] : 64.3010 ( -8.88837 23.0474 )
Norm@50keV : 3.35495E-03 ( -0.000806833 0.0011461 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.42 using 59 PHA bins.
# Reduced chi-squared = 0.9182 for 56 degrees of freedom
# Null hypothesis probability = 6.486681e-01
Photon flux (15-150 keV) in 562.5 sec: 0.281158 ( -0.010608 0.010655 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.02254e-05 ( -3.96e-07 3.95831e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-115.656000 -56.190000
-10.000000 40.160000
41.000000 102.310000
103.000000 494.596000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.09112 ( -0.452947 1.32062 )
beta : -2.09940 ( -0.434952 0.163561 )
Epeak [keV] : 49.9016 ( -16.5676 18.769 )
Norm@50keV : 5.43765E-03 ( -0.00224182 0.040243 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.41 using 59 PHA bins.
# Reduced chi-squared = 0.8801 for 55 degrees of freedom
# Null hypothesis probability = 7.228702e-01
Photon flux (15-150 keV) in 562.5 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.02218e-05 ( -1.02179e-05 -3.79069e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.5989 ( )
R^2/D10^2 : 5.43897E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 254.22 using 59 PHA bins.
# Reduced chi-squared = 4.4599 for 57 degrees of freedom
# Null hypothesis probability = 1.019639e-26
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.030e-06 5.794e-08
25- 50 3.427e-06 1.212e-07
50-150 3.375e-06 2.090e-07
15-150 7.831e-06 2.559e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 96.1334 (-10.1474 12.2142)
Norm : 1.26487 (-0.0598978 0.0640538)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.859e-06 1.257e-07
25- 50 3.189e-06 1.342e-07
50-150 5.052e-06 1.217e-06
15-150 1.010e-05 1.252e-06
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.17716 (-0.844731 0.881252)
R1^2/D10^2 : 0.308264 (-0.0959032 0.163919)
kT2 [keV] : 23.4203 (-3.1034 4.64602)
R2^2/D10^2 : 3.76977E-03 (-0.00188573 0.00296331)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.680e-06 1.783e-07
25- 50 3.259e-06 2.298e-07
50-150 5.071e-06 6.415e-07
15-150 1.001e-05 9.478e-07
Peak spectrum fit
Power-law model
Time interval is from 58.332 sec. to 59.332 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.23476 ( -0.472444 0.598949 )
Norm@50keV : 4.45272E-03 ( -0.00170103 0.00153307 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.86 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 57 degrees of freedom
# Null hypothesis probability = 3.067974e-01
Photon flux (15-150 keV) in 1 sec: 0.750893 ( -0.158476 0.158359 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.20768e-08 ( -1.22985e-08 1.29547e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 58.332 sec. to 59.332 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.89639 ( )
Epeak [keV] : 20.7092 ( )
Norm@50keV : 6.27762E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.89 using 59 PHA bins.
# Reduced chi-squared = 1.123 for 56 degrees of freedom
# Null hypothesis probability = 2.455003e-01
Photon flux (15-150 keV) in 1 sec: 0.750540 ( -0.158363 0.15757 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.16631e-08 ( -1.18324e-08 1.33643e-08 ) ergs/cm2
Band function
Time interval is from 58.332 sec. to 59.332 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -9.99474 ( 9.99474 9.99474 )
beta : -2.23492 ( -0.598923 0.472959 )
Epeak [keV] : 10.3420 ( -10.342 -10.342 )
Norm@50keV : 0.605130 ( -0.23119 0.20837 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.86 using 59 PHA bins.
# Reduced chi-squared = 1.125 for 55 degrees of freedom
# Null hypothesis probability = 2.445550e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72867e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.59329 (-2.52222 4.96249)
R^2/D10^2 : 1.63211 (-1.42846 17.6708)
(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 1.110e-08 6.595e-09
25- 50 1.219e-08 7.430e-09
50-150 1.339e-09 1.147e-09
15-150 2.463e-08 1.438e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 49.8337 (-27.4813 93.5258)
Norm : 4.18107 (-1.46228 3.32299)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.022e-08 3.395e-09
25- 50 1.465e-08 5.611e-09
50-150 1.418e-08 9.514e-09
15-150 3.905e-08 1.486e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.26345 (-1.19229 1.9361)
R1^2/D10^2 : 34.0520 (-29.9267 535.052)
kT2 [keV] : 18.1089 (-6.90869 148.091)
R2^2/D10^2 : 2.68356E-02 (-0.0265207 0.0890445)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.230e-08 7.330e-09
25- 50 1.021e-08 5.800e-09
50-150 1.948e-08 1.307e-08
15-150 4.199e-08 2.283e-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: 1.84386 ( -0.0590947 0.0595006 )
Norm@50keV : 2.04681E-03 ( -6.47794e-05 6.45962e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.79 using 59 PHA bins.
# Reduced chi-squared = 1.224 for 57 degrees of freedom
# Null hypothesis probability = 1.190340e-01
Photon flux (15-150 keV) in 503.1 sec: 0.286986 ( -0.00947297 0.00950791 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.46925e-06 ( -3.01854e-07 3.026e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53256 ( -0.2564 0.241687 )
Epeak [keV] : 73.3719 ( -14.0457 78.2844 )
Norm@50keV : 2.93688E-03 ( -0.000701761 0.00099529 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.90 using 59 PHA bins.
# Reduced chi-squared = 1.159 for 56 degrees of freedom
# Null hypothesis probability = 1.942185e-01
Photon flux (15-150 keV) in 503.1 sec: 0.280137 ( -0.010714 0.010777 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.20351e-06 ( -3.65502e-07 3.64848e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.943464 ( -0.642831 2.96707 )
beta : -1.98685 ( -0.267247 0.120849 )
Epeak [keV] : 44.4165 ( -16.9369 32.4238 )
Norm@50keV : 6.88626E-03 ( -0.00450089 1.21023 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.56 using 59 PHA bins.
# Reduced chi-squared = 1.119 for 55 degrees of freedom
# Null hypothesis probability = 2.530817e-01
Photon flux (15-150 keV) in 503.1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.18656e-06 ( -9.18303e-06 -3.43869e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.06e-06
S(50-100 keV) = 3.36e-06
T90 vs. Hardness ratio plot
T90 = 486.77999997139 sec.
Hardness ratio (energy fluence ratio) = 1.09804
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.21426
Count Ratio (50-100 keV) / (15-25 keV) = 0.671761
Mask shadow pattern
IMX = 2.927393813162477E-01, IMY = -5.228971463046996E-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:
-10.000000 40.160000
41.000000 102.310000
103.000000 494.596000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.9361 10.8373 20.0 37.4 -29.2 0.7147 0.6 10.4 GRS 1915+105
299.6042 35.3525 152.9 17.6 11.6 0.0613 0.1 9.1 Cyg X-1
308.3247 40.8774 6.1 12.1 39.2 1.4193 1.9 10.7 Cyg X-3
326.3663 38.4507 20.0 6.1 135.4 0.4832 0.6 12.0 Cyg X-2
7.6270 66.7118 3.3 42.2 117.0 14.9312 3.5 ------ UNKNOWN
300.8665 34.9632 0.4 16.6 10.1 22.9394 28.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-60.000000 -56.190000
-10.000000 40.160000
41.000000 48.660000
52.000000 54.230000
55.000000 57.520000
59.000000 59.360000
61.000000 61.230000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.6753 11.0243 9.0 37.5 -28.7 0.2413 1.3 8.6 GRS 1915+105
299.5573 35.3426 8.5 17.6 11.6 0.1884 1.4 8.6 Cyg X-1
308.3339 40.8324 0.0 12.0 39.0 0.2779 2.2 12.4 Cyg X-3
326.3668 38.4669 0.0 6.1 135.3 0.0603 0.5 12.7 Cyg X-2
21.8480 52.5805 2.6 46.3 138.9 1.9975 4.4 ------ UNKNOWN
354.9688 63.4942 2.3 36.0 116.7 1.4484 5.1 ------ UNKNOWN
316.2143 60.8816 2.6 26.9 86.5 0.8899 4.5 ------ UNKNOWN
300.8511 35.1191 0.5 16.6 10.7 3.2176 23.8 ------ UNKNOWN
308.4621 25.9898 2.1 13.6 -32.1 0.6641 5.5 ------ UNKNOWN
22.3213 14.2936 2.5 58.4 -174.5 3.2413 4.5 ------ UNKNOWN
278.4593 7.2739 2.4 47.5 -22.9 1.3403 4.9 ------ UNKNOWN
278.7253 5.7270 2.8 48.3 -24.7 1.2329 4.2 ------ UNKNOWN
Plot creation:
Sat Feb 17 18:58:22 EST 2024