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
243.1668 -15.5447 0.0073 0.6 90.8 9.6814 26.3 TRIG_01220158
------------------------------------------
Foreground time interval of the image:
-140.556 -78.900 (delta_t = 61.656 [sec])
-78.000 72.301 (delta_t = 150.301 [sec])
Background time interval of the image:
-239.000 -143.200 (delta_t = 95.800 [sec])
-142.000 -140.556 (delta_t = 1.444 [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
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
-140.556000 -78.900000
-78.000000 303.440000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.49632 ( -0.288366 0.288473 )
Norm@50keV : 6.25827E-05 ( -1.43642e-05 1.7768e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.64 using 59 PHA bins.
# Reduced chi-squared = 1.187 for 57 degrees of freedom
# Null hypothesis probability = 1.581400e-01
Photon flux (15-150 keV) in 443.1 sec: 0.425872 ( -0.0341837 0.0344672 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.54283e-06 ( -4.10454e-07 4.13428e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-140.556000 -78.900000
-78.000000 303.440000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.14273E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 604.63 using 59 PHA bins.
# Reduced chi-squared = 10.797 for 56 degrees of freedom
# Null hypothesis probability = 4.813017e-93
Photon flux (15-150 keV) in 443.1 sec: 0.401324 ( -0.041771 0.040492 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.21972e-06 ( -4.96361e-07 4.81428e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-140.556000 -78.900000
-78.000000 303.440000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.43085 ( -2.59392 1.76588 )
beta : -10.0000 ( 9.53209 1.85672 )
Epeak [keV] : 10.5536 ( -0.558577 0.505928 )
Norm@50keV : 1151.61 ( -73.7196 65625.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.94 using 59 PHA bins.
# Reduced chi-squared = 0.8717 for 55 degrees of freedom
# Null hypothesis probability = 7.388363e-01
Photon flux (15-150 keV) in 443.1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.50968 (-0.1222 0.134099)
R^2/D10^2 : 194.301 (-70.2307 107.231)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.25 using 59 PHA bins.
# Reduced chi-squared = 0.8464 for 57 degrees of freedom
# Null hypothesis probability = 7.889285e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.857e-06 5.949e-07
25- 50 3.627e-07 5.980e-08
50-150 1.190e-10 6.075e-11
15-150 5.220e-06 5.583e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.20745 (-0.292337 0.332897)
Norm : 187.911 (-59.1848 84.9396)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.971e-06 6.159e-07
25- 50 4.138e-07 6.316e-08
50-150 8.313e-10 4.260e-10
15-150 5.386e-06 5.782e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.51636 (-0.128301 0.128492)
R1^2/D10^2 : 190.201 (-68.7094 109.032)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 7.67540E-17 (-1.4548e-23 0.000323608)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.847e-06 7.036e-07
25- 50 3.658e-07 5.523e-08
50-150 1.232e-10 6.952e-11
15-150 5.213e-06 6.576e-07
Peak spectrum fit
Power-law model
Time interval is from 26.876 sec. to 27.876 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.07842 ( -0.874431 1.04091 )
Norm@50keV : 5.36746E-04 ( -0.000536746 0.000738227 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.20 using 59 PHA bins.
# Reduced chi-squared = 0.8457 for 57 degrees of freedom
# Null hypothesis probability = 7.901911e-01
Photon flux (15-150 keV) in 1 sec: 0.892746 ( -0.177353 0.177794 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.84e-08 ( -6.40589e-09 6.83739e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 26.876 sec. to 27.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.09500E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 97.65 using 59 PHA bins.
# Reduced chi-squared = 1.744 for 56 degrees of freedom
# Null hypothesis probability = 4.798727e-04
Photon flux (15-150 keV) in 1 sec: 0.891421 0.883493 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.73671e-08 ( -6.5063e-09 7.7407e-09 ) ergs/cm2
Band function
Time interval is from 26.876 sec. to 27.876 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.87599 ( 8.87599 8.87599 )
beta : -5.10664 ( -1.01706 0.898558 )
Epeak [keV] : 1.87320 ( -1.8732 -1.8732 )
Norm@50keV : 7.07840E-02 ( -0.0714043 0.101919 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.21 using 59 PHA bins.
# Reduced chi-squared = 0.8765 for 55 degrees of freedom
# Null hypothesis probability = 7.297812e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.64439 (-0.448122 0.558359)
R^2/D10^2 : 294.552 (-294.552 827.786)
(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 2.406e-08 1.329e-08
25- 50 2.208e-09 1.380e-09
50-150 1.191e-12 1.288e-12
15-150 2.627e-08 1.495e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.19345 (-1.34912 2.0826)
Norm : 178.883 (-178.883 376.868)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.354e-08 1.187e-08
25- 50 3.238e-09 2.016e-09
50-150 2.026e-11 2.227e-11
15-150 2.680e-08 1.480e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.57109 (-0.448307 0.543534)
R1^2/D10^2 : 350.197 (-348.373 399.697)
kT2 [keV] : 25.6008 (-26.5861 -26.5861)
R2^2/D10^2 : 2.84724E-03 (-0.00273794 439.669)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.381e-08 1.269e-08
25- 50 3.769e-09 1.999e-09
50-150 8.898e-09 7.735e-09
15-150 3.648e-08 1.743e-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: 6.50762 ( -0.322364 0.324727 )
Norm@50keV : 7.09700E-05 ( -1.85312e-05 2.36713e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.80 using 59 PHA bins.
# Reduced chi-squared = 0.9790 for 57 degrees of freedom
# Null hypothesis probability = 5.200408e-01
Photon flux (15-150 keV) in 212 sec: 0.488564 ( -0.0412071 0.0414572 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.04095e-06 ( -2.38396e-07 2.3959e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.41248E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 499.38 using 59 PHA bins.
# Reduced chi-squared = 8.9175 for 56 degrees of freedom
# Null hypothesis probability = 2.009309e-72
Photon flux (15-150 keV) in 212 sec: 0.467613 ( -0.049493 0.04801 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.89836e-06 ( -2.81557e-07 2.73416e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.04259 ( -3.73941 -2.04031 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 9.88835 ( -0.974335 4.03799 )
Norm@50keV : 742.608 ( -433.85 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.39 using 59 PHA bins.
# Reduced chi-squared = 0.6981 for 55 degrees of freedom
# Null hypothesis probability = 9.566362e-01
Photon flux (15-150 keV) in 212 sec: 0.659810 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 5.33e-07
S(50-100 keV) = 2.36e-08
T90 vs. Hardness ratio plot
T90 = 329.775999903679 sec.
Hardness ratio (energy fluence ratio) = 0.0442777
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0704292
Count Ratio (50-100 keV) / (15-25 keV) = -0.00841201
Mask shadow pattern
IMX = -1.591339238720346E-04, IMY = -1.076276123236748E-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:
-239.000000 -143.200000
-142.000000 -140.556000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9438 -15.7869 347.1 1.1 -90.1 -0.0074 -0.0 9.0 Sco X-1
254.5830 35.4048 9.3 52.1 -176.7 -0.7464 -1.2 7.2 Her X-1
255.8692 -37.9907 12.9 24.8 -31.1 -0.2171 -0.9 10.4 4U 1700-377
256.2612 -36.4019 3.7 23.5 -33.7 -0.7330 -3.2 8.5 GX 349+2
262.9094 -24.6385 4.8 20.0 -68.2 -0.6251 -2.4 8.4 GX 1+4
264.8769 -44.3091 5.3 33.8 -35.5 0.6307 2.2 10.2 4U 1735-44
268.2261 -1.2976 460.7 28.0 -126.3 0.0073 0.0 12.6 SW J1753.5-0127
270.4327 -24.9354 9.6 26.6 -73.1 -0.3647 -1.2 11.8 GX 5-1
270.4277 -25.5999 6.9 26.8 -71.7 -0.5030 -1.7 10.9 GRS 1758-258
273.8702 -13.9026 5.8 29.1 -97.3 0.6992 2.0 11.3 GX 17+2
276.0892 -30.4530 28.2 33.0 -65.5 0.1618 0.4 9.9 H1820-303
284.8825 -25.0412 6.4 39.5 -77.3 1.3502 1.8 11.1 HT1900.1-2455
262.8129 -33.8942 7.7 25.0 -47.6 0.4087 1.5 9.5 GX 354-0
244.1952 13.6495 2.7 29.3 172.9 1.0593 4.2 ------ UNKNOWN
243.5644 -15.5911 0.4 0.2 94.1 6.8046 30.8 ------ UNKNOWN
282.1660 -33.9225 2.4 39.0 -62.8 2.3435 4.7 ------ UNKNOWN
287.5104 -33.3206 2.1 43.1 -65.5 5.5158 5.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-140.556000 -78.900000
-78.000000 72.300600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.1543 -15.5113 0.0 1.3 -103.3 -0.3869 -0.7 12.7 Sco X-1
254.5723 35.3427 9.7 52.0 -176.7 1.1549 1.2 5.6 Her X-1
255.7997 -37.9256 12.1 24.7 -31.0 0.3688 1.0 10.1 4U 1700-377
256.3489 -36.5693 9.1 23.7 -33.6 -0.4862 -1.3 9.7 GX 349+2
262.8485 -24.6743 11.6 20.0 -68.0 0.4345 1.0 9.7 GX 1+4
264.8096 -44.3609 2.7 33.8 -35.3 -2.1591 -4.3 6.1 4U 1735-44
268.4348 -1.3732 11.4 28.2 -125.9 -0.5096 -1.0 6.2 SW J1753.5-0127
270.4427 -25.1959 70.7 26.7 -72.6 -0.0862 -0.2 11.1 GX 5-1
270.1372 -25.8393 6.0 26.6 -71.0 0.9882 1.9 10.6 GRS 1758-258
274.1209 -14.1593 5.3 29.3 -96.7 1.2807 2.2 10.0 GX 17+2
275.8551 -30.2878 5.1 32.8 -65.7 -1.4554 -2.2 6.0 H1820-303
284.9450 -24.9023 90.2 39.5 -77.5 -0.1783 -0.1 5.1 HT1900.1-2455
262.8825 -33.9821 61.9 25.1 -47.6 -0.0857 -0.2 10.3 GX 354-0
218.3375 27.6492 2.5 49.8 142.2 8.9402 4.7 ------ UNKNOWN
220.5135 24.3456 2.0 46.0 142.1 7.1193 5.8 ------ UNKNOWN
224.0378 19.7842 2.8 40.4 142.7 3.0888 4.2 ------ UNKNOWN
243.1697 -15.5450 0.4 0.6 90.9 10.4640 28.4 ------ UNKNOWN
254.1806 -37.7952 1.5 24.0 -28.4 2.9234 7.7 ------ UNKNOWN
279.8443 28.3491 2.6 56.1 -149.3 10.1942 4.5 ------ UNKNOWN
281.8883 21.2466 2.5 52.5 -141.5 9.3071 4.6 ------ UNKNOWN
283.7531 9.0110 2.4 46.6 -127.1 8.2603 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
82.800620 363.180900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9875 -15.6508 4.3 1.7 -94.1 -1.4227 -2.7 0.8 Sco X-1
254.4338 35.2108 4.4 51.9 -176.4 -3.8304 -2.6 8.0 Her X-1
255.8047 -37.8793 8.7 24.9 -32.1 0.7602 1.3 8.9 4U 1700-377
256.3973 -36.5455 5.5 24.1 -34.7 1.1702 2.1 7.6 GX 349+2
263.1688 -24.8357 28.2 20.9 -68.4 -0.2374 -0.4 10.2 GX 1+4
264.5523 -44.5119 8.6 34.1 -35.6 -0.9614 -1.3 9.0 4U 1735-44
268.5140 -1.3332 0.0 28.7 -125.3 -0.9063 -1.3 11.3 SW J1753.5-0127
270.4486 -25.0225 9.9 27.2 -73.2 -0.7957 -1.2 9.6 GX 5-1
270.2583 -25.8811 7.9 27.2 -71.3 -1.0345 -1.4 8.6 GRS 1758-258
273.8517 -14.0503 7.0 29.6 -96.9 1.3153 1.6 9.0 GX 17+2
276.0898 -30.2174 4.4 33.5 -66.3 2.4272 2.6 12.4 H1820-303
285.0793 -24.9333 32.7 40.2 -77.6 -0.6520 -0.4 2.5 HT1900.1-2455
263.1241 -33.7549 36.8 25.6 -49.0 -0.2018 -0.3 8.3 GX 354-0
217.1247 26.7293 2.4 49.3 140.7 10.4574 4.8 ------ UNKNOWN
213.2459 -28.9099 3.0 30.7 51.0 2.9608 3.8 ------ UNKNOWN
243.0307 -15.5296 0.5 0.2 85.4 12.1168 24.0 ------ UNKNOWN
253.9264 -37.7490 1.5 24.1 -29.1 4.0446 7.5 ------ UNKNOWN
287.1384 -60.9548 2.1 55.2 -32.3 15.6936 5.5 ------ UNKNOWN
Plot creation:
Sat Mar 16 06:32:24 EDT 2024