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
247.7299 -47.8500 0.0326 21.3 157.7 0.9470 5.9 TRIG_00886486
------------------------------------------
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: 2.82450 ( -0.502384 0.623962 )
Norm@50keV : 5.54206E-04 ( -0.000243466 0.000264341 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.50 using 59 PHA bins.
# Reduced chi-squared = 0.9035 for 57 degrees of freedom
# Null hypothesis probability = 6.808180e-01
Photon flux (15-150 keV) in 64 sec: 0.134566 ( -0.0264256 0.0264962 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.95277e-07 ( -1.04951e-07 1.18216e-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: 1.96688 ( )
Epeak [keV] : 1.12104 ( )
Norm@50keV : 2.23134E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.49 using 59 PHA bins.
# Reduced chi-squared = 0.9374 for 56 degrees of freedom
# Null hypothesis probability = 6.084350e-01
Photon flux (15-150 keV) in 64 sec: 0.134538 ( -0.026413 0.026123 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.92863e-07 ( -1.14397e-07 1.20496e-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 : 2.69621 ( 1.60944 1.60944 )
beta : -2.94620 ( 2.89494 0.566055 )
Epeak [keV] : 16.0179 ( -6.5086 145.045 )
Norm@50keV : 32.2785 ( -32.2775 3204.38 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.32 using 59 PHA bins.
# Reduced chi-squared = 0.9330 for 55 degrees of freedom
# Null hypothesis probability = 6.161062e-01
Photon flux (15-150 keV) in 64 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] : 5.01849 (-1.08849 1.38828)
R^2/D10^2 : 1.06270 (-0.706342 2.34908)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.11 using 59 PHA bins.
# Reduced chi-squared = 0.9844 for 57 degrees of freedom
# Null hypothesis probability = 5.084966e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.679e-07 8.167e-08
25- 50 1.106e-07 5.350e-08
50-150 4.579e-09 3.745e-09
15-150 2.831e-07 1.324e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.8820 (-7.5105 14.6206)
Norm : 1.71042 (-0.763402 1.64308)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.12 using 59 PHA bins.
# Reduced chi-squared = 0.9319 for 57 degrees of freedom
# Null hypothesis probability = 6.214148e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.614e-07 5.197e-08
25- 50 1.351e-07 5.731e-08
50-150 3.667e-08 2.906e-08
15-150 3.332e-07 1.201e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.47770 (-1.83406 1.44656)
R1^2/D10^2 : 1.70696 (-1.1909 15.6853)
kT2 [keV] : 39.6914 (-27.9043 -43.0128)
R2^2/D10^2 : 2.50374E-04 (-0.000184075 0.00803551)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.61 using 59 PHA bins.
# Reduced chi-squared = 0.9202 for 55 degrees of freedom
# Null hypothesis probability = 6.428414e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.705e-07 9.725e-08
25- 50 1.047e-07 5.791e-08
50-150 2.129e-07 1.268e-07
15-150 4.881e-07 2.443e-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: 2.82450 ( -0.502384 0.623962 )
Norm@50keV : 5.54206E-04 ( -0.000243466 0.000264341 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.50 using 59 PHA bins.
# Reduced chi-squared = 0.9035 for 57 degrees of freedom
# Null hypothesis probability = 6.808180e-01
Photon flux (15-150 keV) in 64 sec: 0.134566 ( -0.0264256 0.0264962 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.95277e-07 ( -1.04951e-07 1.18216e-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: 1.96688 ( )
Epeak [keV] : 1.12104 ( )
Norm@50keV : 2.23134E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.49 using 59 PHA bins.
# Reduced chi-squared = 0.9374 for 56 degrees of freedom
# Null hypothesis probability = 6.084350e-01
Photon flux (15-150 keV) in 64 sec: 0.134538 ( -0.026413 0.026123 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.92863e-07 ( -1.13364e-07 1.16268e-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 : 2.69621 ( 1.60944 1.60944 )
beta : -2.94620 ( 2.89494 0.566055 )
Epeak [keV] : 16.0179 ( -6.5086 145.045 )
Norm@50keV : 32.2785 ( -32.2775 3204.38 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.32 using 59 PHA bins.
# Reduced chi-squared = 0.9330 for 55 degrees of freedom
# Null hypothesis probability = 6.161062e-01
Photon flux (15-150 keV) in 64 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] : 5.01849 (-1.08849 1.38828)
R^2/D10^2 : 1.06270 (-0.706342 2.34908)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.11 using 59 PHA bins.
# Reduced chi-squared = 0.9844 for 57 degrees of freedom
# Null hypothesis probability = 5.084966e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.679e-07 8.373e-08
25- 50 1.106e-07 6.071e-08
50-150 4.579e-09 3.992e-09
15-150 2.831e-07 1.232e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.8820 (-7.5105 14.6206)
Norm : 1.71042 (-0.763402 1.64308)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.12 using 59 PHA bins.
# Reduced chi-squared = 0.9319 for 57 degrees of freedom
# Null hypothesis probability = 6.214148e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.614e-07 5.226e-08
25- 50 1.351e-07 5.252e-08
50-150 3.667e-08 2.916e-08
15-150 3.332e-07 1.107e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.47770 (-1.83406 1.44656)
R1^2/D10^2 : 1.70696 (-1.1909 15.6853)
kT2 [keV] : 39.6914 (-27.9043 -43.0128)
R2^2/D10^2 : 2.50374E-04 (-0.000184075 0.00747614)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.61 using 59 PHA bins.
# Reduced chi-squared = 0.9202 for 55 degrees of freedom
# Null hypothesis probability = 6.428414e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.705e-07 9.640e-08
25- 50 1.047e-07 5.487e-08
50-150 2.129e-07 1.368e-07
15-150 4.881e-07 2.413e-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: 2.82450 ( -0.502384 0.623962 )
Norm@50keV : 5.54206E-04 ( -0.000243466 0.000264341 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.50 using 59 PHA bins.
# Reduced chi-squared = 0.9035 for 57 degrees of freedom
# Null hypothesis probability = 6.808180e-01
Photon flux (15-150 keV) in 64 sec: 0.134566 ( -0.0264256 0.0264962 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.95277e-07 ( -1.04951e-07 1.18216e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.96688 ( )
Epeak [keV] : 1.12104 ( )
Norm@50keV : 2.23134E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.49 using 59 PHA bins.
# Reduced chi-squared = 0.9374 for 56 degrees of freedom
# Null hypothesis probability = 6.084350e-01
Photon flux (15-150 keV) in 64 sec: 0.134538 ( -0.026413 0.026123 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.92863e-07 ( -1.13972e-07 1.18145e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.69621 ( 1.60944 1.60944 )
beta : -2.94620 ( 2.89494 0.566055 )
Epeak [keV] : 16.0179 ( -6.5086 145.045 )
Norm@50keV : 32.2785 ( -32.2775 3204.38 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.32 using 59 PHA bins.
# Reduced chi-squared = 0.9330 for 55 degrees of freedom
# Null hypothesis probability = 6.161062e-01
Photon flux (15-150 keV) in 64 sec: ( ) 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) = 1.33e-07
S(50-100 keV) = 7.50e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.56391
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.583319
Count Ratio (50-100 keV) / (15-25 keV) = 0.221171
Mask shadow pattern
IMX = -3.603343810102472E-01, IMY = -1.479084739713066E-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:
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] [']
186.6214 -62.7635 3.2 37.8 86.3 1.8710 3.5 1.1 GX 301-2
244.9737 -15.6954 2.4 51.4 178.9 2.4664 4.8 3.3 Sco X-1
255.9978 -37.8668 2.2 27.3 -177.6 0.9438 5.2 1.5 4U 1700-377
256.3088 -36.3028 5.0 28.7 -176.0 0.4171 2.3 9.5 GX 349+2
262.8653 -24.7681 13.9 38.5 -161.0 -0.2003 -0.8 7.9 GX 1+4
264.4688 -44.3854 20.4 19.1 -167.4 -0.0994 -0.6 12.4 4U 1735-44
270.2875 -25.1040 18.6 37.4 -150.2 0.1563 0.6 1.5 GX 5-1
270.2790 -25.9185 0.0 36.6 -150.3 0.0468 0.2 10.6 GRS 1758-258
274.0338 -14.0426 20.3 48.3 -144.2 0.2492 0.6 1.7 GX 17+2
275.7051 -30.3625 7.9 31.9 -142.1 -0.2676 -1.5 11.4 H1820-303
285.0282 -25.0932 0.0 37.7 -128.2 -0.2225 -0.8 10.4 HT1900.1-2455
262.9966 -33.9061 12.0 29.5 -163.8 0.1723 1.0 4.3 GX 354-0
207.0208 -63.2779 0.4 29.9 95.1 9.1535 33.0 ------ UNKNOWN
170.4797 -81.5113 2.5 31.0 54.1 1.2821 4.7 ------ UNKNOWN
247.7300 -47.8500 2.0 21.3 157.7 0.9478 5.9 ------ UNKNOWN
20.3509 -50.9238 2.4 52.2 -12.6 1.7885 4.8 ------ UNKNOWN
24.5046 -44.3050 3.1 59.2 -14.0 3.4471 3.7 ------ UNKNOWN
277.0973 -22.7288 2.8 39.6 -140.0 1.0160 4.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
117.200600 403.800600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.6305 -60.6698 0.0 44.0 50.5 4.4049 2.1 9.7 Cen X-3
186.7045 -62.7651 6.4 36.1 49.9 2.1332 1.8 1.3 GX 301-2
244.9728 -15.6307 0.8 32.3 -177.9 9.3616 14.2 0.7 Sco X-1
255.9477 -37.8401 1.3 11.6 -138.9 5.3679 9.0 1.9 4U 1700-377
256.6273 -36.4324 102.6 13.1 -139.7 0.0671 0.1 9.3 GX 349+2
263.1948 -24.7987 6.6 26.1 -139.5 1.1347 1.8 10.6 GX 1+4
264.8964 -44.3104 32.9 12.4 -93.0 0.1867 0.3 10.7 4U 1735-44
268.4004 -1.3288 6.6 49.8 -145.4 -3.4180 -1.8 7.7 SW J1753.5-0127
270.2321 -25.1191 5.0 28.8 -126.9 1.6914 2.3 3.7 GX 5-1
270.5203 -25.8264 0.0 28.4 -125.7 -0.0611 -0.1 12.8 GRS 1758-258
274.0542 -13.8901 13.3 40.3 -131.2 0.8127 0.9 9.2 GX 17+2
275.8670 -30.5349 5.8 27.6 -111.5 1.4864 2.0 10.5 H1820-303
284.9529 -25.0670 29.7 37.0 -107.4 0.6318 0.4 9.9 HT1900.1-2455
263.0035 -33.8522 53.3 18.1 -128.0 -0.1331 -0.2 1.3 GX 354-0
207.0357 -63.2649 0.2 27.0 47.3 42.1646 54.3 ------ UNKNOWN
247.8380 -47.8199 1.1 0.1 -84.3 5.5045 10.6 ------ UNKNOWN
297.7112 -61.4463 4.0 31.0 -38.2 1.8999 2.9 ------ UNKNOWN
7.5720 -67.0373 2.7 56.5 -16.9 8.6024 4.2 ------ UNKNOWN
269.3145 -20.8308 3.4 32.1 -132.6 3.0105 3.3 ------ UNKNOWN
281.5595 -29.9825 3.0 31.4 -105.2 3.3451 3.8 ------ UNKNOWN
266.4337 2.0450 4.0 52.5 -149.1 5.3290 2.9 ------ UNKNOWN
UNKNOWN
UNKNOWN
Plot creation:
Wed Jan 30 07:00:01 EST 2019