TDRSS lightcurve for Trigger=853824

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 18 Aug 18 03:12:36 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     853824,   Seg_Num: 0
GRB_RA:          169.611d {+11h 18m 27s} (J2000),
                 169.829d {+11h 19m 19s} (current),
                 169.028d {+11h 16m 07s} (1950)
GRB_DEC:         -48.344d {-48d 20' 39"} (J2000),
                 -48.446d {-48d 26' 46"} (current),
                 -48.071d {-48d 04' 14"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       6152 [cnts]    Image_Peak=198 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   253     E_range: 15-50 keV
BKG_INTEN:       64122 [cnts]
BKG_TIME:        11490.55 SOD {03:11:30.55} UT
BKG_DUR:         24 [sec]
GRB_DATE:        18348 TJD;   230 DOY;   18/08/18
GRB_TIME:        11524.02 SOD {03:12:04.02} UT
GRB_PHI:          80.52 [deg]
GRB_THETA:        15.90 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.30 [sigma]
IMAGE_SIGNIF:    7.09 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  -3  +0  +0 -43  +0 
SUN_POSTN:       147.43d {+09h 49m 43s}  +13.14d {+13d 08' 08"}
SUN_DIST:         64.71 [deg]   Sun_angle= -1.5 [hr] (East of Sun)
MOON_POSTN:      232.05d {+15h 28m 12s}  -13.64d {-13d 38' 19"}
MOON_DIST:        61.52 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      287.39, 11.70 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      195.98,-47.15 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
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 = 160.57,11.80 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 18 Aug 18 03:31:08 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     853824,   Seg_Num: 0
GRB_RA:          169.611d {+11h 18m 27s} (J2000),
                 169.829d {+11h 19m 19s} (current),
                 169.028d {+11h 16m 07s} (1950)
GRB_DEC:         -48.344d {-48d 20' 39"} (J2000),
                 -48.446d {-48d 26' 46"} (current),
                 -48.071d {-48d 04' 14"} (1950)
GRB_DATE:        18348 TJD;   230 DOY;   18/08/18
GRB_TIME:        11524.02 SOD {03:12:04.02} UT
TRIGGER_INDEX:   253
GRB_PHI:          80.52 [deg]
GRB_THETA:        15.90 [deg]
DELTA_TIME:      12.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.30 [sigma]
IMAGE_SIGNIF:    7.09 [sigma]
LC_URL:          sw00853824000msb.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

Plot creation:
Fri Aug 17 23:31:22 EDT 2018