TDRSS lightcurve for Trigger=811167

Notes:

• 1) None of the TDRSS light curves are background subtracted.

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 22 Feb 18 00:46:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     811167,   Seg_Num: 0
GRB_RA:          273.387d {+18h 13m 33s} (J2000),
                 273.636d {+18h 14m 33s} (current),
                 272.700d {+18h 10m 48s} (1950)
GRB_DEC:          -9.501d {-09d 30' 02"} (J2000),
                  -9.495d {-09d 29' 40"} (current),
                  -9.516d {-09d 30' 55"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=14171 [image_cnts]
TRIGGER_DUR:     1552.000 [sec]   (=25.9 [min])
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        18171 TJD;    53 DOY;   18/02/22
GRB_TIME:        1227.48 SOD {00:20:27.48} UT
GRB_PHI:          34.66 [deg]
GRB_THETA:        10.45 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.73 [sigma]
MERIT_PARAMS:     +1  +0  +0  +8  +1  -1  +0  +1 -48  +0 
SUN_POSTN:       335.27d {+22h 21m 04s}  -10.28d {-10d 16' 44"}
SUN_DIST:         60.62 [deg]   Sun_angle= 4.1 [hr] (West of Sun)
MOON_POSTN:       45.70d {+03h 02m 48s}  +11.73d {+11d 43' 55"}
MOON_DIST:       132.88 [deg]
MOON_ILLUM:      36 [%]
GAL_COORDS:       20.14,  3.97 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      273.44, 13.90 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 169.30,11.92 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 22 Feb 18 00:58:34 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     811167,   Seg_Num: 0
GRB_RA:          273.387d {+18h 13m 33s} (J2000),
                 273.636d {+18h 14m 33s} (current),
                 272.700d {+18h 10m 48s} (1950)
GRB_DEC:          -9.501d {-09d 30' 02"} (J2000),
                  -9.495d {-09d 29' 40"} (current),
                  -9.516d {-09d 30' 55"} (1950)
GRB_DATE:        18171 TJD;    53 DOY;   18/02/22
GRB_TIME:        1227.48 SOD {00:20:27.48} UT
TRIGGER_INDEX:   20000
GRB_PHI:          34.66 [deg]
GRB_THETA:        10.45 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     1552.000 [sec]   (=25.9 [min])
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.73 [sigma]
LC_URL:          sw00811167000msb.lc

Initial TDRSS lightcurve and spacecraft attitude plot

TDRSS lightcurve from T0-30 to T0+50 (zoom in)

TDRSS light curve from T0-1 to T0+2 (More zoom in)

1.6s binned TDRSS light curve

Plot creation:
Wed Feb 21 19:58:43 EST 2018