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
250.4130 -45.5774 0.0321 22.4 -139.3 0.9566 6.0 TRIG_01073821
------------------------------------------
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: 2.95002 ( -0.399841 0.466226 )
Norm@50keV : 5.34733E-04 ( -0.000193011 0.000211216 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.54 using 59 PHA bins.
# Reduced chi-squared = 1.290 for 57 degrees of freedom
# Null hypothesis probability = 6.927431e-02
Photon flux (15-150 keV) in 64 sec: 0.141836 ( -0.0261244 0.026181 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.02036e-07 ( -9.05242e-08 9.7657e-08 ) 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: -6.84674 ( 6.86151 5.63952 )
Epeak [keV] : 22.3961 ( -3.19451 2.23614 )
Norm@50keV : 1.46822E+04 ( -15766.5 4.57854e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.93 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 56 degrees of freedom
# Null hypothesis probability = 2.445438e-01
Photon flux (15-150 keV) in 64 sec: 0.136373 ( -0.024717 0.024843 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.17868e-07 ( -5.94509e-08 6.31802e-08 ) 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 : 5.00000 ( -4.42023 -5 )
beta : -5.90573 ( 6.01474 2.47643 )
Epeak [keV] : 22.0905 ( -1.43904 2.41738 )
Norm@50keV : 549.679 ( -94.5431 835.917 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.84 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 55 degrees of freedom
# Null hypothesis probability = 2.183860e-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] : 5.20229 (-0.730042 0.858009)
R^2/D10^2 : 1.05258 (-0.534656 1.08706)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.10 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 57 degrees of freedom
# Null hypothesis probability = 2.155090e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.915e-07 6.259e-08
25- 50 1.378e-07 5.924e-08
50-150 6.762e-09 5.174e-09
15-150 3.360e-07 1.092e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 17.1858 (-5.0001 7.82573)
Norm : 2.12403 (-0.795865 1.2636)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.832e-07 4.931e-08
25- 50 1.416e-07 5.136e-08
50-150 3.246e-08 2.433e-08
15-150 3.573e-07 1.041e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.07528 (-5.06579 0.474904)
R1^2/D10^2 : 1.14704 (-1.1561 1.45386)
kT2 [keV] : 21.7450 (-21.5724 -21.5724)
R2^2/D10^2 : 3.42268E-04 (-0.000356256 2.03895)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.914e-07 9.472e-08
25- 50 1.385e-07 8.209e-08
50-150 4.134e-08 2.654e-08
15-150 3.712e-07 1.975e-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: 2.95002 ( -0.399841 0.466226 )
Norm@50keV : 5.34733E-04 ( -0.000193011 0.000211216 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.54 using 59 PHA bins.
# Reduced chi-squared = 1.290 for 57 degrees of freedom
# Null hypothesis probability = 6.927431e-02
Photon flux (15-150 keV) in 64 sec: 0.141836 ( -0.0261244 0.026181 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.02036e-07 ( -9.05242e-08 9.7657e-08 ) 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: -6.84674 ( 6.86151 5.63952 )
Epeak [keV] : 22.3961 ( -3.19451 2.23614 )
Norm@50keV : 1.46822E+04 ( -15766.5 4.5781e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.93 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 56 degrees of freedom
# Null hypothesis probability = 2.445438e-01
Photon flux (15-150 keV) in 64 sec: 0.136373 ( -0.024717 0.024843 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.17868e-07 ( -5.94509e-08 6.31802e-08 ) 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 : 5.00000 ( -4.42023 -5 )
beta : -5.90573 ( 6.01474 2.47643 )
Epeak [keV] : 22.0905 ( -1.43904 2.41738 )
Norm@50keV : 549.679 ( -94.5431 835.917 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.84 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 55 degrees of freedom
# Null hypothesis probability = 2.183860e-01
Photon flux (15-150 keV) in 64 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] : 5.20229 (-0.730042 0.858009)
R^2/D10^2 : 1.05258 (-0.534656 1.08706)
(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 1.915e-07 7.664e-08
25- 50 1.378e-07 5.550e-08
50-150 6.762e-09 5.068e-09
15-150 3.360e-07 1.102e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 17.1858 (-5.0001 7.82573)
Norm : 2.12403 (-0.795865 1.2636)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.832e-07 4.736e-08
25- 50 1.416e-07 4.822e-08
50-150 3.246e-08 2.279e-08
15-150 3.573e-07 1.076e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.07528 (-5.06579 0.474904)
R1^2/D10^2 : 1.14704 (-1.1561 1.45386)
kT2 [keV] : 21.7450 (-21.5724 -21.5724)
R2^2/D10^2 : 3.42268E-04 (-0.000356256 2.03895)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.914e-07 1.025e-07
25- 50 1.385e-07 8.176e-08
50-150 4.134e-08 2.342e-08
15-150 3.712e-07 1.903e-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: 2.95002 ( -0.399841 0.466226 )
Norm@50keV : 5.34733E-04 ( -0.000193011 0.000211216 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.54 using 59 PHA bins.
# Reduced chi-squared = 1.290 for 57 degrees of freedom
# Null hypothesis probability = 6.927431e-02
Photon flux (15-150 keV) in 64 sec: 0.141836 ( -0.0261244 0.026181 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.02036e-07 ( -9.05242e-08 9.7657e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.84674 ( 6.86151 5.63952 )
Epeak [keV] : 22.3961 ( -3.19451 2.23614 )
Norm@50keV : 1.46822E+04 ( -15766.5 4.57781e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.93 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 56 degrees of freedom
# Null hypothesis probability = 2.445438e-01
Photon flux (15-150 keV) in 64 sec: 0.136373 ( -0.024717 0.024843 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.17868e-07 ( -5.94509e-08 6.31802e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.42023 -5 )
beta : -5.90573 ( 6.01474 2.47643 )
Epeak [keV] : 22.0905 ( -1.43904 2.41738 )
Norm@50keV : 549.679 ( -94.5431 835.917 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.84 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 55 degrees of freedom
# Null hypothesis probability = 2.183860e-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) = 1.34e-07
S(50-100 keV) = 6.96e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.519403
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.456266
Count Ratio (50-100 keV) / (15-25 keV) = 0.115318
Mask shadow pattern
IMX = -3.127445053637004E-01, IMY = 2.685370214781125E-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] [']
245.0054 -15.6337 1.0 27.6 -63.8 2.2515 12.0 1.5 Sco X-1
255.9627 -37.8230 0.9 14.6 -126.1 1.8393 13.6 1.7 4U 1700-377
256.2720 -36.2571 0.0 13.7 -120.8 0.1675 1.2 12.7 GX 349+2
262.8810 -24.5919 7.5 8.7 -54.2 0.1948 1.5 11.6 GX 1+4
264.7051 -44.5982 7.3 15.5 -162.7 -0.2245 -1.6 9.0 4U 1735-44
268.3270 -1.3032 6.2 28.6 -4.1 0.2799 1.8 9.3 SW J1753.5-0127
270.2477 -25.0679 5.4 4.8 -4.6 0.2733 2.1 2.1 GX 5-1
270.1975 -25.7683 3.9 4.1 -6.2 0.3818 3.0 5.9 GRS 1758-258
274.1536 -14.0114 3.4 16.1 12.9 0.4556 3.3 8.7 GX 17+2
275.7411 -30.2270 0.0 4.3 97.6 0.2984 2.4 12.7 H1820-303
285.2123 -24.9822 5.6 13.7 73.7 -0.3159 -2.1 10.3 HT1900.1-2455
288.7670 10.9422 27.9 44.3 26.7 0.1132 0.4 1.9 GRS 1915+105
263.1104 -33.9899 19.6 7.7 -123.7 0.0768 0.6 11.1 GX 354-0
319.9093 -39.1689 2.3 41.1 117.7 2.4072 5.0 ------ UNKNOWN
290.1390 -53.5516 2.3 27.6 155.8 0.8740 4.9 ------ UNKNOWN
250.4130 -45.5775 1.9 22.4 -139.3 0.9562 6.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
116.800600 123.013400
126.000000 372.040000
373.000000 919.300600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3480 -60.5916 4.5 47.1 -150.9 6.6661 2.6 2.1 Cen X-3
186.6601 -62.7723 24.1 39.1 -151.6 1.0119 0.5 0.2 GX 301-2
244.9759 -15.6356 0.5 30.3 -22.8 27.7665 24.7 0.3 Sco X-1
255.9866 -37.8433 0.4 8.7 17.8 29.7486 28.4 0.0 4U 1700-377
256.5172 -36.4228 4.1 10.2 16.4 2.8317 2.8 4.0 GX 349+2
263.0409 -24.5990 11.9 23.3 17.9 1.0750 1.0 9.0 GX 1+4
264.9031 -44.6022 7.5 10.2 77.7 1.7158 1.5 11.4 4U 1735-44
268.3661 -1.4501 51.0 46.8 12.7 0.4477 0.2 0.2 SW J1753.5-0127
270.3212 -25.0538 4.0 26.0 32.4 3.4278 2.9 2.5 GX 5-1
270.4541 -25.6605 2.8 25.5 33.4 4.9789 4.3 9.6 GRS 1758-258
274.0374 -14.0565 3.5 37.2 27.7 5.7815 3.3 2.2 GX 17+2
275.7611 -30.4000 14.6 24.8 49.1 0.9859 0.8 8.7 H1820-303
285.1371 -24.7818 13.6 34.7 52.9 1.5044 0.9 10.0 HT1900.1-2455
263.0564 -33.6905 1377.1 15.3 31.3 0.0075 0.0 9.3 GX 354-0
2.0158 -75.9138 2.8 51.0 150.9 19.8831 4.2 ------ UNKNOWN
273.9878 -41.1407 3.4 17.6 71.7 4.0707 3.4 ------ UNKNOWN
266.0684 7.8817 4.1 55.2 6.7 12.1547 2.9 ------ UNKNOWN
263.1436 -3.2274 4.2 43.7 6.3 5.1002 2.7 ------ UNKNOWN
250.4557 -45.5396 1.9 0.0 -115.5 6.4179 6.2 ------ UNKNOWN
184.8717 -53.8718 3.8 41.7 -138.3 6.0767 3.1 ------ UNKNOWN
205.6344 -40.6402 3.3 32.7 -109.9 6.9467 3.5 ------ UNKNOWN
UNKNOWN
Plot creation:
Sun Sep 19 14:25:22 EDT 2021