TDRSS lightcurve for Trigger=644520

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 18 Jun 15 00:44:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     644520,   Seg_Num: 0
GRB_RA:          306.012d {+20h 24m 03s} (J2000),
                 306.164d {+20h 24m 39s} (current),
                 305.523d {+20h 22m 05s} (1950)
GRB_DEC:         +33.867d {+33d 52' 01"} (J2000),
                 +33.918d {+33d 55' 03"} (current),
                 +33.704d {+33d 42' 15"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       6758 [cnts]    Image_Peak=189 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   262     E_range: 25-100 keV
BKG_INTEN:       72038 [cnts]
BKG_TIME:        2610.26 SOD {00:43:30.26} UT
BKG_DUR:         24 [sec]
GRB_DATE:        17191 TJD;   169 DOY;   15/06/18
GRB_TIME:        2645.01 SOD {00:44:05.01} UT
GRB_PHI:          73.86 [deg]
GRB_THETA:         7.64 [deg]
SOLN_STATUS:     0x1000088D
RATE_SIGNIF:     6.48 [sigma]
IMAGE_SIGNIF:    6.20 [sigma]
MERIT_PARAMS:     +0  +0 +100  +1  +2  -4  +0  +1 +36  +1 
SUN_POSTN:        86.19d {+05h 44m 46s}  +23.39d {+23d 23' 26"}
SUN_DIST:        111.23 [deg]   Sun_angle= 9.3 [hr] (West of Sun)
MOON_POSTN:      104.83d {+06h 59m 18s}  +17.78d {+17d 46' 44"}
MOON_DIST:       124.45 [deg]
MOON_ILLUM:      2 [%]
GAL_COORDS:       73.12, -2.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      321.06, 51.12 [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 matches a source in the on-board catalog: Num=23949=(null) (probably an AT_Slot).  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is not a GRB.  
COMMENTS:           
COMMENTS:        The IMAGE_SIGNIF is VERY LOW, this is very likely not real.  
COMMENTS:        This trigger occurred at longitude,latitude = 40.79,17.09 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 18 Jun 15 01:00:54 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     644520,   Seg_Num: 0
GRB_RA:          306.012d {+20h 24m 03s} (J2000),
                 306.164d {+20h 24m 39s} (current),
                 305.523d {+20h 22m 05s} (1950)
GRB_DEC:         +33.867d {+33d 52' 01"} (J2000),
                 +33.918d {+33d 55' 03"} (current),
                 +33.704d {+33d 42' 15"} (1950)
GRB_DATE:        17191 TJD;   169 DOY;   15/06/18
GRB_TIME:        2645.01 SOD {00:44:05.01} UT
TRIGGER_INDEX:   262
GRB_PHI:          73.86 [deg]
GRB_THETA:         7.64 [deg]
DELTA_TIME:      45.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x88D
RATE_SIGNIF:     6.48 [sigma]
IMAGE_SIGNIF:    6.20 [sigma]
LC_URL:          sw00644520000msb.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:
Wed Jun 17 21:01:03 EDT 2015