TDRSS lightcurve for Trigger=958141

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 24 Feb 20 03:25:47 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     958141,   Seg_Num: 0
GRB_RA:          248.794d {+16h 35m 11s} (J2000),
                 248.959d {+16h 35m 50s} (current),
                 248.385d {+16h 33m 32s} (1950)
GRB_DEC:         +41.675d {+41d 40' 31"} (J2000),
                 +41.635d {+41d 38' 05"} (current),
                 +41.777d {+41d 46' 37"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       11878 [cnts]    Image_Peak=291 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   475     E_range: 25-100 keV
BKG_INTEN:       105869 [cnts]
BKG_TIME:        12231.51 SOD {03:23:51.51} UT
BKG_DUR:         40 [sec]
GRB_DATE:        18903 TJD;    55 DOY;   20/02/24
GRB_TIME:        12289.30 SOD {03:24:49.30} UT
GRB_PHI:         156.50 [deg]
GRB_THETA:         6.91 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     10.72 [sigma]
IMAGE_SIGNIF:    6.80 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  -3  +0  +0  +8  +0 
SUN_POSTN:       336.82d {+22h 27m 16s}   -9.68d {-09d 41' 03"}
SUN_DIST:         94.83 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      343.59d {+22h 54m 23s}  -11.91d {-11d 54' 33"}
MOON_DIST:       101.31 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       65.88, 42.50 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      234.18, 62.50 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 349.94,20.64 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 24 Feb 20 03:36:37 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     958141,   Seg_Num: 0
GRB_RA:          248.794d {+16h 35m 11s} (J2000),
                 248.959d {+16h 35m 50s} (current),
                 248.385d {+16h 33m 32s} (1950)
GRB_DEC:         +41.675d {+41d 40' 31"} (J2000),
                 +41.635d {+41d 38' 05"} (current),
                 +41.777d {+41d 46' 37"} (1950)
GRB_DATE:        18903 TJD;    55 DOY;   20/02/24
GRB_TIME:        12289.30 SOD {03:24:49.30} UT
TRIGGER_INDEX:   475
GRB_PHI:         156.50 [deg]
GRB_THETA:         6.91 [deg]
DELTA_TIME:      -18.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     10.72 [sigma]
IMAGE_SIGNIF:    6.80 [sigma]
LC_URL:          sw00958141000msb.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

Plot creation:
Sun Feb 23 22:37:05 EST 2020