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
261.7175 -16.9782 0.0211 16.3 85.6 -2.7841 -9.1 TRIG_01192253
------------------------------------------
Foreground time interval of the image:
24.508 24.520 (delta_t = 0.012 [sec])
26.000 166.232 (delta_t = 140.232 [sec])
Background time interval of the image:
-60.000 -52.890 (delta_t = 7.110 [sec])
-52.000 24.508 (delta_t = 76.508 [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
24.508000 24.520000
26.000000 166.232000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.92296 ( -0.0786383 0.0800637 )
Norm@50keV : 3.98943E-03 ( -0.000181488 0.000180576 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.70 using 59 PHA bins.
# Reduced chi-squared = 0.7140 for 57 degrees of freedom
# Null hypothesis probability = 9.493606e-01
Photon flux (15-150 keV) in 140.2 sec: 1.03794 ( -0.039921 0.0404065 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.49305e-06 ( -2.00967e-07 2.0098e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
24.508000 24.520000
26.000000 166.232000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98540 ( -0.183714 -1.9854 )
Epeak [keV] : 0.611152 ( -0.0595925 0.0678171 )
Norm@50keV : 1.37952E-02 ( -0.000473549 0.0013303 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.36 using 59 PHA bins.
# Reduced chi-squared = 0.6672 for 56 degrees of freedom
# Null hypothesis probability = 9.738735e-01
Photon flux (15-150 keV) in 140.2 sec: 0.992038 ( -0.049646 0.050142 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.16426e-06 ( -2.8849e-07 2.93789e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
24.508000 24.520000
26.000000 166.232000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.86436 ( -0.325113 0.307711 )
beta : -3.15242 ( -0.505679 0.182141 )
Epeak [keV] : 4.35659 ( -2.52469 8.96397 )
Norm@50keV : 1.83051E-02 ( -0.00398075 0.167187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.56 using 59 PHA bins.
# Reduced chi-squared = 0.5919 for 55 degrees of freedom
# Null hypothesis probability = 9.931117e-01
Photon flux (15-150 keV) in 140.2 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] : 7.46684 ( )
R^2/D10^2 : 1.20337 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 175.22 using 59 PHA bins.
# Reduced chi-squared = 3.0740 for 57 degrees of freedom
# Null hypothesis probability = 5.945414e-14
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.608e-06 9.954e-08
25- 50 2.488e-06 7.851e-08
50-150 5.178e-07 5.734e-08
15-150 4.614e-06 1.640e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.5048 (-1.70525 1.87149)
Norm : 8.68358 (-0.772213 0.858971)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.258e-06 1.143e-07
25- 50 2.344e-06 7.290e-08
50-150 1.026e-06 9.807e-08
15-150 5.629e-06 1.696e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.79675 (-0.573268 0.572075)
R1^2/D10^2 : 7.13138 (-2.71353 5.52447)
kT2 [keV] : 13.3832 (-1.83404 2.57993)
R2^2/D10^2 : 5.46670E-02 (-0.031293 0.0605979)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.344e-06 2.993e-07
25- 50 2.242e-06 2.243e-07
50-150 1.230e-06 2.471e-07
15-150 5.816e-06 6.870e-07
Peak spectrum fit
Power-law model
Time interval is from 130.344 sec. to 131.344 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.31179 ( -0.296617 0.330642 )
Norm@50keV : 8.60452E-03 ( -0.0019053 0.00183667 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.17 using 59 PHA bins.
# Reduced chi-squared = 0.9854 for 57 degrees of freedom
# Null hypothesis probability = 5.062519e-01
Photon flux (15-150 keV) in 1 sec: 1.51364 ( -0.229344 0.229507 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.24072e-08 ( -1.45926e-08 1.5007e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 130.344 sec. to 131.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.97593 ( )
Epeak [keV] : 2.86841 ( )
Norm@50keV : 1.36270E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.95 using 59 PHA bins.
# Reduced chi-squared = 0.9992 for 56 degrees of freedom
# Null hypothesis probability = 4.765699e-01
Photon flux (15-150 keV) in 1 sec: 1.49566 ( -0.23837 0.23773 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.99395e-08 ( -1.59751e-08 1.68739e-08 ) ergs/cm2
Band function
Time interval is from 130.344 sec. to 131.344 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -2.93390 ( 2.9339 2.9339 )
beta : -2.31179 ( -0.330625 0.296592 )
Epeak [keV] : 31.8156 ( -31.8156 -31.8156 )
Norm@50keV : 1.16948 ( -0.258957 0.24963 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.17 using 59 PHA bins.
# Reduced chi-squared = 1.021 for 55 degrees of freedom
# Null hypothesis probability = 4.308697e-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] : 8.94428 (-1.58376 1.83238)
R^2/D10^2 : 1.03113 (-0.541217 1.22493)
(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 1.601e-08 4.505e-09
25- 50 3.370e-08 7.660e-09
50-150 1.261e-08 5.410e-09
15-150 6.232e-08 1.512e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 43.4886 (-14.0177 24.7687)
Norm : 9.19825 (-2.34698 3.43765)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.169e-08 4.245e-09
25- 50 2.954e-08 5.990e-09
50-150 2.498e-08 1.078e-08
15-150 7.621e-08 1.651e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.16873 (-1.28587 2.04337)
R1^2/D10^2 : 61.0437 (-54.4072 1631.43)
kT2 [keV] : 12.4269 (-2.79543 5.07174)
R2^2/D10^2 : 0.230258 (-0.184836 0.463775)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.344e-08 1.314e-08
25- 50 2.749e-08 1.506e-08
50-150 2.347e-08 1.476e-08
15-150 7.440e-08 3.734e-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: 2.92296 ( -0.0786383 0.0800637 )
Norm@50keV : 3.98943E-03 ( -0.000181488 0.000180576 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.70 using 59 PHA bins.
# Reduced chi-squared = 0.7140 for 57 degrees of freedom
# Null hypothesis probability = 9.493606e-01
Photon flux (15-150 keV) in 140.2 sec: 1.03794 ( -0.039921 0.0404065 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.49305e-06 ( -2.00967e-07 2.0098e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98540 ( -0.183714 -1.9854 )
Epeak [keV] : 0.611152 ( -0.0595925 0.0678171 )
Norm@50keV : 1.37952E-02 ( -0.000473549 0.0013303 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.36 using 59 PHA bins.
# Reduced chi-squared = 0.6672 for 56 degrees of freedom
# Null hypothesis probability = 9.738735e-01
Photon flux (15-150 keV) in 140.2 sec: 0.992038 ( -0.049646 0.050142 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.16426e-06 ( -2.8849e-07 2.93789e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.86436 ( -0.325113 0.307711 )
beta : -3.15242 ( -0.505679 0.182141 )
Epeak [keV] : 4.35659 ( -2.52329 8.9644 )
Norm@50keV : 1.83051E-02 ( -0.00398075 0.167187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 32.56 using 59 PHA bins.
# Reduced chi-squared = 0.5919 for 55 degrees of freedom
# Null hypothesis probability = 9.931117e-01
Photon flux (15-150 keV) in 140.2 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) = 2.17e-06
S(50-100 keV) = 1.15e-06
T90 vs. Hardness ratio plot
T90 = 141.723999977112 sec.
Hardness ratio (energy fluence ratio) = 0.529954
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.636522
Count Ratio (50-100 keV) / (15-25 keV) = 0.163597
Mask shadow pattern
IMX = 2.235592609163480E-02, IMY = -2.920662939724851E-01
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:
-60.000000 -52.890000
-52.000000 24.508000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0346 -15.4963 11.6 1.2 9.8 0.2581 1.0 9.2 Sco X-1
254.3529 35.3257 4.1 52.7 1.8 -1.8171 -2.8 5.2 Her X-1
256.1795 -37.7219 5.2 23.4 148.4 -0.6147 -2.2 11.7 4U 1700-377
256.5033 -36.3005 11.7 22.3 146.0 0.2769 1.0 8.1 GX 349+2
262.8374 -24.8869 0.0 18.9 110.9 0.3639 1.3 12.6 GX 1+4
264.7879 -44.3025 5.8 32.5 144.5 0.7140 2.0 9.1 4U 1735-44
268.2248 -1.4360 14.6 27.7 51.1 -0.2673 -0.8 8.6 SW J1753.5-0127
270.2002 -24.9973 6.5 25.3 105.5 0.6361 1.8 6.7 GX 5-1
270.4682 -25.6454 6.8 25.7 106.8 0.6065 1.7 10.7 GRS 1758-258
274.1622 -14.1726 0.0 28.5 81.1 0.1304 0.3 12.2 GX 17+2
275.7516 -30.2555 0.0 31.5 113.2 -0.6220 -1.5 11.2 H1820-303
285.1003 -24.8480 9.3 38.6 101.1 0.8435 1.2 5.6 HT1900.1-2455
262.8230 -33.6970 0.0 23.6 131.5 -0.1786 -0.6 11.7 GX 354-0
278.9397 5.2608 2.5 40.3 51.9 2.5315 4.5 ------ UNKNOWN
261.5863 -17.1063 0.3 16.2 86.1 9.8235 34.1 ------ UNKNOWN
235.1934 -57.6840 2.5 41.7 179.4 1.7321 4.6 ------ UNKNOWN
244.5351 -16.6614 0.6 0.1 -124.3 4.7613 19.1 ------ UNKNOWN
215.7728 24.7715 3.2 50.0 -43.1 3.7877 3.5 ------ UNKNOWN
202.2084 -12.8529 3.9 41.2 -98.8 3.1939 3.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
24.508000 24.520000
26.000000 166.232000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8149 -15.6889 7.3 0.9 0.9 0.4286 1.6 9.9 Sco X-1
254.3280 35.2534 5.5 52.7 1.8 2.0369 2.1 8.3 Her X-1
255.9496 -37.9211 7.6 23.5 149.1 -0.4682 -1.5 4.9 4U 1700-377
256.3670 -36.3905 12.5 22.3 146.4 0.2798 0.9 3.8 GX 349+2
262.8770 -24.6058 51.9 18.8 110.0 -0.0768 -0.2 11.0 GX 1+4
264.9319 -44.4471 11.2 32.7 144.6 0.4211 1.0 8.1 4U 1735-44
268.5135 -1.3318 0.0 28.0 51.2 -0.7014 -1.8 11.3 SW J1753.5-0127
270.3972 -25.2110 9.0 25.5 105.9 0.4734 1.3 10.0 GX 5-1
270.4604 -25.6962 15.5 25.7 106.9 -0.3224 -0.9 9.0 GRS 1758-258
273.8517 -14.0359 6.3 28.2 80.7 -0.7809 -1.8 9.0 GX 17+2
276.0904 -30.2138 0.0 31.7 112.9 0.7227 1.5 12.6 H1820-303
285.0271 -24.9104 7.5 38.5 101.2 -1.3560 -1.5 0.8 HT1900.1-2455
262.9522 -33.7681 24.5 23.8 131.5 -0.1608 -0.5 4.4 GX 354-0
284.6798 -2.7623 2.1 41.7 66.8 6.4246 5.5 ------ UNKNOWN
261.3547 -17.2292 1.3 16.0 86.5 2.6917 8.9 ------ UNKNOWN
252.6030 35.0446 2.3 52.2 0.1 4.4814 5.0 ------ UNKNOWN
251.4518 30.3109 2.1 47.4 -0.2 3.1055 5.5 ------ UNKNOWN
244.3457 -16.8196 2.1 0.4 -133.9 1.4623 5.4 ------ UNKNOWN
225.7221 22.2943 2.7 43.1 -34.3 2.0364 4.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-60.000000 -52.890000
-10.000000 24.520000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0403 -15.6453 11.1 1.0 12.6 0.1475 1.0 3.5 Sco X-1
254.4517 35.3185 4.6 52.7 1.9 -1.0569 -2.5 1.5 Her X-1
256.1821 -37.6992 0.0 23.4 148.4 -0.3393 -2.2 12.7 4U 1700-377
256.6176 -36.3782 6.0 22.4 145.9 0.2839 1.9 9.2 GX 349+2
262.8485 -24.6765 7.9 18.8 110.2 0.2315 1.5 9.7 GX 1+4
264.6696 -44.3957 9.0 32.5 144.8 0.2517 1.3 4.5 4U 1735-44
268.3609 -1.4345 51.8 27.8 51.2 -0.0409 -0.2 1.2 SW J1753.5-0127
270.1196 -25.0873 7.4 25.2 105.8 0.3018 1.6 9.0 GX 5-1
270.4680 -25.6799 5.2 25.7 106.9 0.4452 2.2 9.7 GRS 1758-258
273.8554 -13.8999 23.7 28.3 80.4 -0.1071 -0.5 12.0 GX 17+2
275.9365 -30.2329 11.3 31.6 113.0 -0.2328 -1.0 8.1 H1820-303
285.1833 -24.7773 11.9 38.6 100.9 0.3999 1.0 11.8 HT1900.1-2455
263.0442 -33.9332 6.3 23.9 131.7 0.2882 1.8 6.5 GX 354-0
261.5796 -17.1112 0.4 16.2 86.1 4.9664 31.7 ------ UNKNOWN
246.9194 -63.9368 2.6 47.4 170.5 1.3025 4.4 ------ UNKNOWN
244.5431 -16.6715 0.7 0.1 -129.5 2.4041 17.7 ------ UNKNOWN
206.9335 -37.9551 2.8 39.3 -138.6 0.8632 4.2 ------ UNKNOWN
188.3957 -47.5473 3.7 55.2 -145.1 2.3427 3.1 ------ UNKNOWN
202.1420 -12.7812 2.7 41.2 -98.7 2.5682 4.3 ------ UNKNOWN
Plot creation:
Sun Sep 17 01:41:55 EDT 2023