Analysis for Trigger 576738
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This is a special analysis for ground-detected GRB. The event data duration is likely to be shorter than the burst duration. In such cases, the burst durations are found using the quad-rate data, and spectral analyses are only available for event data range.
- 3) Some mask-weighted light curve plots might be missing because the time range is not completely covered by the event data range.
Special note: This burst was outside the BAT calibrated field of view (the FLUX mask region)
in the whole T100 range (~ T0+6 s to ~ T0+125 s; see figure below),
hence spectral analysis is not available, and the rest of the analyses use the DETECTION mask.
FLUX-mask-weighted light curve (pcodethresh=0.05; aperture=CALDB:FLUX)
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun May 10 20:58:58 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/scripts
======================================================================
Trigger: 00576738 Segment: 000
BAT Trigger Time: 405309896 [s; MET]
Trigger Stop: 405310104 [s; MET]
UTC: 2013-11-05T02:04:44.765060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 71.0114112270193 Dec: -62.9813396525796 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.83
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.83
Analysis Position: [ source = BAT ]
RA: 71.0114112270193 Dec: -62.9813396525796 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 70.9731209722132 Dec: -63.0054706939753 [deg; J2000]
{ 04h 43m 53.5s , -63d 00' 19.7" }
+/- 1.46374787060581 [arcmin] (estimated 90% radius based on SNR)
+/- 0.518258927633105 [arcmin] (formal 1-sigma fit error)
SNR: 17.6497267168363
Partial Coding Fraction: 0.07714844 [ including projection effects ]
Duration
T90: 112.208000063896 +/- 4.102307689173
Measured from: 11.1919999718666
to: 123.400000035763 [s; relative to TRIGTIME]
T50: 73.6960000395775 +/- 1.87445991275442
Measured from: 41.8799999952316
to: 115.576000034809 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 116.635999977589
to: 117.635999977589 [s; relative to TRIGTIME]
Total Fluence
Measured from: 6.79199999570847
to: 125.336000025272 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.725174 3.787572 3.276326 1.131819
0.212441 0.226743 0.200077 0.170509 [error]
Peak 0.053249 0.216810 0.153324 0.063709
0.022784 0.026260 0.024891 0.020923 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== Table of the duration information ==
Value tstart tstop
T100 118.544 6.792 125.336
T90 112.208 11.192 123.400
T50 73.696 41.880 115.576
Peak 1.000 116.636 117.636
Click here for the BAT GCN circular template
Special notes of this burst
Image
Pre-slew 15.0-350.0 keV image (Event data with DETECTION mask; bkg subtracted)
#RAcent DECcent POSerr Theta Phi Peak_Cts SNR Name
70.9731 -63.0055 0.0109 41.7525 -96.7177 11.3123445 17.650 TRIG_00576738
Foreground time interval of the image:
6.792 125.336 (delta_t = 118.544 [sec])
Background time interval of the image:
-239.000 6.792 (delta_t = 245.792 [sec])
Lightcurves
Notes:
- 1) The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
- 2) 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 (for the best duration plot, slew times are marked by green arrows).
- 3) For lightcurves in unit of count rate, 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)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Mask shadow pattern (with DETECTION mask)
IMX = 0, IMY = 0
TIME vs. PHA plot around the beginning of event data (event_start to event_start+0.64s) with DETECTION mask
TIME vs. DetID plot around the beginning of event data (event_start to event_start+0.64s) with DETECTION mask
100 us light curve (15-350 keV; (event_start to event_start+0.64s)
Spacecraft aspect plot
Bright source in the event data image
Event data image of 15-350 keV band
Time interval of the image:
6.792000 125.336000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
93.9910 -5.2897 2.8 54.5 -179.8 1.6588 4.2 ------ UNKNOWN
94.3927 -16.0578 2.0 50.3 -167.3 1.5389 5.6 ------ UNKNOWN
81.2559 -51.0569 2.5 39.3 -116.7 1.3365 4.6 ------ UNKNOWN
70.9731 -63.0055 0.7 41.8 -96.7 11.3123 17.3 ------ UNKNOWN
Webpage updated on:
Mon May 25 17:17:23 EDT 2015