TDRSS lightcurve for Trigger=668949

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 31 Dec 15 17:18:20 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     668949,   Seg_Num: 0
GRB_RA:          305.996d {+20h 23m 59s} (J2000),
                 306.153d {+20h 24m 37s} (current),
                 305.507d {+20h 22m 02s} (1950)
GRB_DEC:         +33.859d {+33d 51' 34"} (J2000),
                 +33.912d {+33d 54' 43"} (current),
                 +33.697d {+33d 41' 49"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2792 [cnts]    Image_Peak=96 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   150     E_range: 25-100 keV
BKG_INTEN:       18931 [cnts]
BKG_TIME:        62264.36 SOD {17:17:44.36} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17387 TJD;   365 DOY;   15/12/31
GRB_TIME:        62278.31 SOD {17:17:58.31} UT
GRB_PHI:         -159.03 [deg]
GRB_THETA:        50.78 [deg]
SOLN_STATUS:     0x3000018D
RATE_SIGNIF:     8.54 [sigma]
IMAGE_SIGNIF:    6.99 [sigma]
MERIT_PARAMS:     +0  +0 +113  +0  +2  -3  +0  +1 -47  +0 
SUN_POSTN:       280.55d {+18h 42m 13s}  -23.08d {-23d 04' 54"}
SUN_DIST:         61.98 [deg]   Sun_angle= -1.7 [hr] (East of Sun)
MOON_POSTN:      173.89d {+11h 35m 33s}   +2.53d {+02d 31' 48"}
MOON_DIST:       122.21 [deg]
MOON_ILLUM:      64 [%]
GAL_COORDS:       73.10, -2.08 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      321.03, 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=10763=(null) (probably an AT_Slot).  
COMMENTS:        This matches a source in the ground catalog: V_404_Cyg,   delta=0.018 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 229.00,-11.52 [deg].  
COMMENTS:           

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 31 Dec 15 17:35:04 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     668949,   Seg_Num: 0
GRB_RA:          305.996d {+20h 23m 59s} (J2000),
                 306.153d {+20h 24m 37s} (current),
                 305.507d {+20h 22m 02s} (1950)
GRB_DEC:         +33.859d {+33d 51' 34"} (J2000),
                 +33.912d {+33d 54' 43"} (current),
                 +33.697d {+33d 41' 49"} (1950)
GRB_DATE:        17387 TJD;   365 DOY;   15/12/31
GRB_TIME:        62278.31 SOD {17:17:58.31} UT
TRIGGER_INDEX:   150
GRB_PHI:         -159.03 [deg]
GRB_THETA:        50.78 [deg]
DELTA_TIME:      45.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x18D
RATE_SIGNIF:     8.54 [sigma]
IMAGE_SIGNIF:    6.99 [sigma]
LC_URL:          sw00668949000msb.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:
Thu Dec 31 12:35:22 EST 2015