TDRSS lightcurve for Trigger=820347

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 31 Mar 18 04:15:49 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     820347,   Seg_Num: 0
GRB_RA:           66.017d {+04h 24m 04s} (J2000),
                  66.273d {+04h 25m 06s} (current),
                  65.316d {+04h 21m 16s} (1950)
GRB_DEC:         +13.398d {+13d 23' 52"} (J2000),
                 +13.439d {+13d 26' 20"} (current),
                 +13.283d {+13d 16' 59"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       31097 [cnts]    Image_Peak=593 [image_cnts]
TRIGGER_DUR:     8.192 [sec] 
TRIGGER_INDEX:   477     E_range: 25-100 keV
BKG_INTEN:       223013 [cnts]
BKG_TIME:        15203.29 SOD {04:13:23.29} UT
BKG_DUR:         64 [sec]
GRB_DATE:        18208 TJD;    90 DOY;   18/03/31
GRB_TIME:        15295.70 SOD {04:14:55.70} UT
GRB_PHI:         -141.13 [deg]
GRB_THETA:        24.62 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.90 [sigma]
IMAGE_SIGNIF:    8.89 [sigma]
MERIT_PARAMS:     +1  +0  +0  +3  +2  -1  +0  +0 -55  +0 
SUN_POSTN:         9.57d {+00h 38m 16s}   +4.12d {+04d 07' 14"}
SUN_DIST:         56.69 [deg]   Sun_angle= -3.8 [hr] (East of Sun)
MOON_POSTN:      187.18d {+12h 28m 42s}   +1.36d {+01d 21' 40"}
MOON_DIST:       119.60 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      181.69,-24.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       66.46, -8.10 [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 = 173.42,14.00 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 31 Mar 18 04:34:39 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     820347,   Seg_Num: 0
GRB_RA:           66.017d {+04h 24m 04s} (J2000),
                  66.273d {+04h 25m 06s} (current),
                  65.316d {+04h 21m 16s} (1950)
GRB_DEC:         +13.398d {+13d 23' 52"} (J2000),
                 +13.439d {+13d 26' 20"} (current),
                 +13.283d {+13d 16' 59"} (1950)
GRB_DATE:        18208 TJD;    90 DOY;   18/03/31
GRB_TIME:        15295.70 SOD {04:14:55.70} UT
TRIGGER_INDEX:   477
GRB_PHI:         -141.13 [deg]
GRB_THETA:        24.62 [deg]
DELTA_TIME:      38.00 [sec]
TRIGGER_DUR:     8.192 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.90 [sigma]
IMAGE_SIGNIF:    8.89 [sigma]
LC_URL:          sw00820347000msb.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:
Sat Mar 31 00:35:03 EDT 2018