TDRSS lightcurve for Trigger=956639

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 20 14:39:50 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     956639,   Seg_Num: 0
GRB_RA:           34.122d {+02h 16m 29s} (J2000),
                  34.394d {+02h 17m 35s} (current),
                  33.446d {+02h 13m 47s} (1950)
GRB_DEC:         +12.781d {+12d 46' 50"} (J2000),
                 +12.873d {+12d 52' 24"} (current),
                 +12.549d {+12d 32' 57"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5274 [cnts]    Image_Peak=497 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       24051 [cnts]
BKG_TIME:        52759.55 SOD {14:39:19.55} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18894 TJD;    46 DOY;   20/02/15
GRB_TIME:        52771.97 SOD {14:39:31.97} UT
GRB_PHI:         -167.81 [deg]
GRB_THETA:        34.05 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     37.12 [sigma]
IMAGE_SIGNIF:    16.49 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +5  +0  +0 -34  +0 
SUN_POSTN:       328.61d {+21h 54m 26s}  -12.72d {-12d 43' 24"}
SUN_DIST:         70.06 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      230.76d {+15h 23m 02s}  -14.70d {-14d 41' 56"}
MOON_DIST:       164.01 [deg]
MOON_ILLUM:      54 [%]
GAL_COORDS:      152.98,-45.07 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       36.15, -0.84 [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 = 8.29,-10.31 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=603470376).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 20 14:44:49 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     956639,   Seg_Num: 0
GRB_RA:           34.122d {+02h 16m 29s} (J2000),
                  34.394d {+02h 17m 35s} (current),
                  33.446d {+02h 13m 47s} (1950)
GRB_DEC:         +12.781d {+12d 46' 50"} (J2000),
                 +12.873d {+12d 52' 24"} (current),
                 +12.549d {+12d 32' 57"} (1950)
GRB_DATE:        18894 TJD;    46 DOY;   20/02/15
GRB_TIME:        52771.97 SOD {14:39:31.97} UT
TRIGGER_INDEX:   146
GRB_PHI:         -167.81 [deg]
GRB_THETA:        34.05 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     37.12 [sigma]
IMAGE_SIGNIF:    16.49 [sigma]
LC_URL:          sw00956639000msb.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:
Sat Feb 15 09:45:06 EST 2020