TDRSS lightcurve for Trigger=854578

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 21 Aug 18 16:42:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     854578,   Seg_Num: 0
GRB_RA:            7.763d {+00h 31m 03s} (J2000),
                   7.990d {+00h 31m 58s} (current),
                   7.151d {+00h 28m 36s} (1950)
GRB_DEC:         -38.619d {-38d 37' 07"} (J2000),
                 -38.516d {-38d 30' 57"} (current),
                 -38.895d {-38d 53' 40"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1050 [image_cnts]
TRIGGER_DUR:     120.000 [sec] 
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:        18351 TJD;   233 DOY;   18/08/21
GRB_TIME:        60034.53 SOD {16:40:34.53} UT
GRB_PHI:          32.55 [deg]
GRB_THETA:        44.83 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.81 [sigma]
MERIT_PARAMS:     +1  +0  +0  +7  +1  -2  +0  +0 +74  +0 
SUN_POSTN:       150.73d {+10h 02m 56s}  +11.97d {+11d 57' 57"}
SUN_DIST:        137.59 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
MOON_POSTN:      276.86d {+18h 27m 27s}  -20.64d {-20d 38' 16"}
MOON_DIST:        78.17 [deg]
MOON_ILLUM:      81 [%]
GAL_COORDS:      322.02,-77.74 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      348.93,-37.92 [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 = 182.41,13.27 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 21 Aug 18 17:06:56 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     854578,   Seg_Num: 0
GRB_RA:            7.763d {+00h 31m 03s} (J2000),
                   7.990d {+00h 31m 58s} (current),
                   7.151d {+00h 28m 36s} (1950)
GRB_DEC:         -38.619d {-38d 37' 07"} (J2000),
                 -38.516d {-38d 30' 57"} (current),
                 -38.895d {-38d 53' 40"} (1950)
GRB_DATE:        18351 TJD;   233 DOY;   18/08/21
GRB_TIME:        60034.53 SOD {16:40:34.53} UT
TRIGGER_INDEX:   20000
GRB_PHI:          32.55 [deg]
GRB_THETA:        44.83 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     120.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.81 [sigma]
LC_URL:          sw00854578000msb.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

Extended TDRSS light curve and spacecraft attitude plot(s)

Extended TDRSS lc No.1

Extended TDRSS lc No.2

Extended TDRSS lc No.3

Extended TDRSS lc No.4

Plot creation:
Tue Aug 21 13:07:23 EDT 2018