TDRSS lightcurve for Trigger=897653

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 09 Apr 19 13:02:37 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     897653,   Seg_Num: 0
GRB_RA:          324.921d {+21h 39m 41s} (J2000),
                 325.233d {+21h 40m 56s} (current),
                 324.109d {+21h 36m 26s} (1950)
GRB_DEC:         -46.607d {-46d 36' 25"} (J2000),
                 -46.519d {-46d 31' 09"} (current),
                 -46.834d {-46d 50' 01"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1205 [image_cnts]
TRIGGER_DUR:     64.000 [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:        18582 TJD;    99 DOY;   19/04/09
GRB_TIME:        46881.28 SOD {13:01:21.28} UT
GRB_PHI:         -161.16 [deg]
GRB_THETA:        34.02 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.18 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +0 -31  +0 
SUN_POSTN:        17.90d {+01h 11m 37s}   +7.59d {+07d 35' 24"}
SUN_DIST:         71.47 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
MOON_POSTN:       67.45d {+04h 29m 48s}  +18.28d {+18d 17' 05"}
MOON_DIST:       111.46 [deg]
MOON_ILLUM:      17 [%]
GAL_COORDS:      352.35,-47.81 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      310.80,-30.64 [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 = 67.27,-20.50 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 09 Apr 19 13:18:34 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     897653,   Seg_Num: 0
GRB_RA:          324.921d {+21h 39m 41s} (J2000),
                 325.233d {+21h 40m 56s} (current),
                 324.109d {+21h 36m 26s} (1950)
GRB_DEC:         -46.607d {-46d 36' 25"} (J2000),
                 -46.519d {-46d 31' 09"} (current),
                 -46.834d {-46d 50' 01"} (1950)
GRB_DATE:        18582 TJD;    99 DOY;   19/04/09
GRB_TIME:        46881.28 SOD {13:01:21.28} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -161.16 [deg]
GRB_THETA:        34.02 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.18 [sigma]
LC_URL:          sw00897653000msb.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 Apr  9 09:19:02 EDT 2019