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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
266.5718 -64.7442 0.1167 33.6 -15.4 0.5519 1.6 TRIG_00593433
------------------------------------------
Foreground time interval of the image:
0.000 320.000 (delta_t = 320.000 [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
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)
The mask-weighted light curves based on cleaned DPHs
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 320.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71932 ( -1.16548 1.04934 )
Norm@50keV : 1.17205E-04 ( -0.000117214 6.91056e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.06 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 57 degrees of freedom
# Null hypothesis probability = 2.425776e-01
Photon flux (15-150 keV) in 320 sec: 1.56714E-02 ( -0.00922046 0.00943937 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.46797e-07 ( -2.06218e-07 2.17088e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.989244 ( 1.65104 3.78723 )
Epeak [keV] : 42.6062 ( )
Norm@50keV : 4.65050E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.82 using 59 PHA bins.
# Reduced chi-squared = 1.122 for 56 degrees of freedom
# Null hypothesis probability = 2.474169e-01
Photon flux (15-150 keV) in 320 sec: 1.44338E-02 ( -0.00840267 0.0091185 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.63213e-07 ( -1.49945e-07 2.41183e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.69042 ( -6.96492 -0.377966 )
beta : -9.99995 ( 9.99995 7.33967e-06 )
Epeak [keV] : 41.7468 ( -16.9888 235.987 )
Norm@50keV : 1.30535E-02 ( -0.00696231 0.00696231 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.82 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 55 degrees of freedom
# Null hypothesis probability = 2.189626e-01
Photon flux (15-150 keV) in 320 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] : 10.7585 (-4.40197 7.86298)
R^2/D10^2 : 6.29180E-03 (-0.0062918 0.0412097)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.85 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 57 degrees of freedom
# Null hypothesis probability = 2.768796e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.846e-08 3.339e-08
25- 50 1.331e-07 8.885e-08
50-150 8.554e-08 6.851e-08
15-150 2.671e-07 1.866e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 86.2153 (-86.1911 -86.1911)
Norm : 7.44958E-02 (-0.0465394 0.114584)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.82 using 59 PHA bins.
# Reduced chi-squared = 1.120 for 57 degrees of freedom
# Null hypothesis probability = 2.491385e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.210e-08 4.200e-08
25- 50 1.040e-07 7.178e-08
50-150 1.542e-07 1.439e-07
15-150 3.204e-07 2.410e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 ( )
R1^2/D10^2 : 1.69702E-06 (-1.69727e-06 -1.69727e-06)
kT2 [keV] : 9.39768 (-4.0588 7.01348)
R2^2/D10^2 : 9.51419E-03 (-0.00829885 0.0764143)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.85 using 59 PHA bins.
#Fit statistic : Chi-Squared = 61.82 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 55 degrees of freedom
# Reduced chi-squared = 1.124 for 55 degrees of freedom
# Null hypothesis probability = 2.181632e-01
# Null hypothesis probability = 2.456200e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.840e-08 5.370e-03
25- 50 1.331e-07 4.949e-02
50-150 8.575e-08 1.170e+00
15-150 2.673e-07 1.281e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71932 ( -1.16548 1.04934 )
Norm@50keV : 1.17205E-04 ( -0.000117214 6.91056e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.06 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 57 degrees of freedom
# Null hypothesis probability = 2.425776e-01
Photon flux (15-150 keV) in 320 sec: 1.56714E-02 ( -0.00922046 0.00943937 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.46797e-07 ( -2.06218e-07 2.17088e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.989244 ( 1.65104 3.79079 )
Epeak [keV] : 42.6062 ( )
Norm@50keV : 4.65050E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.82 using 59 PHA bins.
# Reduced chi-squared = 1.122 for 56 degrees of freedom
# Null hypothesis probability = 2.474169e-01
Photon flux (15-150 keV) in 320 sec: 1.44338E-02 ( -0.00840267 0.0091185 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.63213e-07 ( -1.49945e-07 2.41183e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 320.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.69042 ( -7.16956 -0.377966 )
beta : -9.99995 ( 9.99995 7.83274e-05 )
Epeak [keV] : 41.7468 ( -16.9888 289.145 )
Norm@50keV : 1.30535E-02 ( -0.00696231 0.00696231 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.82 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 55 degrees of freedom
# Null hypothesis probability = 2.189626e-01
Photon flux (15-150 keV) in 320 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] : 10.7585 (-4.40197 7.86298)
R^2/D10^2 : 6.29180E-03 (-0.0062918 0.0412097)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.85 using 59 PHA bins.
# Reduced chi-squared = 1.103 for 57 degrees of freedom
# Null hypothesis probability = 2.768796e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.846e-08 3.286e-08
25- 50 1.331e-07 9.637e-08
50-150 8.554e-08 6.536e-08
15-150 2.671e-07 1.866e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 86.2153 (-86.1911 -86.1911)
Norm : 7.44958E-02 (-0.0465394 0.114584)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.82 using 59 PHA bins.
# Reduced chi-squared = 1.120 for 57 degrees of freedom
# Null hypothesis probability = 2.491385e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.210e-08 4.280e-08
25- 50 1.040e-07 7.462e-08
50-150 1.542e-07 1.308e-07
15-150 3.204e-07 2.443e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 ( )
R1^2/D10^2 : 1.69702E-06 (-1.69727e-06 -1.69727e-06)
kT2 [keV] : 9.39768 (-4.0588 7.01348)
R2^2/D10^2 : 9.51419E-03 (-0.00829885 0.0764143)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.85 using 59 PHA bins.
#Fit statistic : Chi-Squared = 61.82 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 55 degrees of freedom
# Reduced chi-squared = 1.124 for 55 degrees of freedom
# Null hypothesis probability = 2.181632e-01
# Null hypothesis probability = 2.456200e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.840e-08 5.840e-03
25- 50 1.331e-07 4.941e-02
50-150 8.575e-08 1.292e+00
15-150 2.673e-07 1.200e+00
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: 1.71932 ( -1.16548 1.04934 )
Norm@50keV : 1.17205E-04 ( -0.000117214 6.91056e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.06 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 57 degrees of freedom
# Null hypothesis probability = 2.425776e-01
Photon flux (15-150 keV) in 320 sec: 1.56714E-02 ( -0.00922046 0.00943937 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.46797e-07 ( -2.06218e-07 2.17088e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.989244 ( 1.65104 3.79045 )
Epeak [keV] : 42.6062 ( )
Norm@50keV : 4.65050E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.82 using 59 PHA bins.
# Reduced chi-squared = 1.122 for 56 degrees of freedom
# Null hypothesis probability = 2.474169e-01
Photon flux (15-150 keV) in 320 sec: 1.44338E-02 ( -0.00840267 0.0091185 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.63213e-07 ( -1.49945e-07 2.41183e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.69042 ( -8.38645 -0.377966 )
beta : -9.99995 ( 9.99995 0.000456925 )
Epeak [keV] : 41.7468 ( -16.9888 239.577 )
Norm@50keV : 1.30535E-02 ( -0.00696231 0.00696231 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.82 using 59 PHA bins.
# Reduced chi-squared = 1.142 for 55 degrees of freedom
# Null hypothesis probability = 2.189626e-01
Photon flux (15-150 keV) in 320 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) = 9.46086e-08
S(50-100 keV) = 1.14965e-07
T90 vs. Hardness ratio plot
T90 = 320 sec.
Hardness ratio (energy fluence ratio) = 1.21516
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.62082
Count Ratio (50-100 keV) / (15-25 keV) = 0.501305
Mask shadow pattern
IMX = 6.403410624045214E-01, IMY = 1.769253435811881E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 320.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9699 -15.6399 0.2 20.3 128.6 17.3929 53.2 0.6 Sco X-1
255.9746 -37.8398 0.8 6.8 10.3 3.8659 14.0 0.6 4U 1700-377
256.4051 -36.4253 1.5 5.3 12.4 2.0083 7.7 1.5 GX 349+2
262.9769 -24.7431 6.0 7.6 -160.4 0.5857 1.9 1.8 GX 1+4
264.7362 -44.4514 28.8 13.8 -27.4 0.1135 0.4 0.3 4U 1735-44
268.2463 -1.3713 4.6 31.4 -171.3 0.8128 2.5 8.8 SW J1753.5-0127
270.4533 -25.0085 7.7 12.1 -129.1 0.4442 1.5 10.1 GX 5-1
270.2905 -25.8242 3.9 11.5 -126.2 0.8659 2.9 4.9 GRS 1758-258
274.0279 -14.0650 1.9 22.3 -147.6 1.7852 6.1 2.1 GX 17+2
275.8965 -30.4330 3.0 14.6 -99.2 1.1607 3.9 4.2 H1820-303
285.0331 -24.8641 3.0 23.9 -109.0 1.3187 3.8 3.4 HT1900.1-2455
288.7881 10.9324 2.2 51.2 -150.6 4.8482 5.4 1.0 GRS 1915+105
262.9094 -33.8501 8.5 4.1 -63.6 0.4027 1.4 4.1 GX 354-0
231.3394 -4.7454 2.7 37.2 120.8 3.0542 4.3 ------ UNKNOWN
250.9515 -11.6394 2.9 21.2 148.5 1.2020 3.9 ------ UNKNOWN
257.2212 -44.1185 2.6 12.7 -4.1 1.2088 4.4 ------ UNKNOWN
265.6418 -27.7408 0.9 7.0 -130.3 3.7333 13.5 ------ UNKNOWN
266.1373 -28.7504 0.4 6.8 -121.2 7.4961 26.4 ------ UNKNOWN
278.4040 24.0410 2.4 58.6 -168.6 7.9343 4.7 ------ UNKNOWN
282.6297 -63.1978 2.1 35.1 -27.9 2.1587 5.6 ------ UNKNOWN
294.8715 -31.5454 2.1 30.5 -89.8 2.3715 5.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
401.900600 963.142000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1731 -60.7168 4.0 40.2 42.0 2.7830 2.9 7.0 Cen X-3
186.7118 -62.9081 3.9 33.1 48.5 1.9526 3.0 8.4 GX 301-2
255.9857 -37.8375 0.8 27.7 154.3 6.0754 13.5 0.4 4U 1700-377
256.4267 -36.4390 1.1 29.0 155.5 4.7487 10.3 1.0 GX 349+2
262.9852 -24.7646 5.6 40.0 167.5 1.3392 2.1 1.7 GX 1+4
264.9723 -44.3216 0.0 20.4 169.1 0.5008 1.2 12.5 4U 1735-44
270.2856 -25.0794 493.9 39.7 177.9 -0.0137 -0.0 0.1 GX 5-1
270.3025 -25.7431 6.3 39.0 177.9 1.0546 1.8 0.0 GRS 1758-258
273.9395 -14.0345 4.7 50.9 -178.1 2.8130 2.5 3.9 GX 17+2
276.0621 -30.4347 4.4 34.8 -173.0 1.2160 2.6 8.2 H1820-303
285.0344 -24.9201 119.9 41.5 -161.7 0.0589 0.1 0.1 HT1900.1-2455
263.0314 -33.9110 3.2 30.9 166.8 1.6960 3.6 5.0 GX 354-0
265.7089 -27.7247 1.3 37.0 171.3 4.9868 8.6 ------ UNKNOWN
266.1210 -28.7459 0.5 36.0 171.9 12.3799 23.0 ------ UNKNOWN
292.5844 -16.6727 2.7 51.1 -154.7 4.4184 4.2 ------ UNKNOWN
60.4522 -54.6284 3.2 58.9 -24.4 16.0143 3.6 ------ UNKNOWN
Plot creation:
Wed May 7 20:48:48 EDT 2014