TDRSS lightcurve for Trigger=826428

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 18 Apr 18 06:44:22 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     826428,   Seg_Num: 0
GRB_RA:          170.112d {+11h 20m 27s} (J2000),
                 170.355d {+11h 21m 25s} (current),
                 169.449d {+11h 17m 48s} (1950)
GRB_DEC:         +24.956d {+24d 57' 22"} (J2000),
                 +24.856d {+24d 51' 21"} (current),
                 +25.230d {+25d 13' 49"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       447 [cnts]    Image_Peak=66 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10418     E_range: 25-100 keV
BKG_INTEN:       20820 [cnts]
BKG_TIME:        24235.19 SOD {06:43:55.19} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18226 TJD;   108 DOY;   18/04/18
GRB_TIME:        24246.07 SOD {06:44:06.07} UT
GRB_PHI:         167.52 [deg]
GRB_THETA:        14.46 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     22.84 [sigma]
IMAGE_SIGNIF:    8.81 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +2  -1  +0  +0 +64  +0 
SUN_POSTN:        26.19d {+01h 44m 46s}  +10.83d {+10d 49' 54"}
SUN_DIST:        130.05 [deg]   Sun_angle= -9.6 [hr] (East of Sun)
MOON_POSTN:       55.76d {+03h 43m 02s}  +14.72d {+14d 43' 04"}
MOON_DIST:       104.98 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      213.87, 69.48 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      160.82, 18.98 [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 = 321.98,19.58 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=545726651).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 18 Apr 18 07:14:37 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     826428,   Seg_Num: 0
GRB_RA:          170.112d {+11h 20m 27s} (J2000),
                 170.355d {+11h 21m 25s} (current),
                 169.449d {+11h 17m 48s} (1950)
GRB_DEC:         +24.956d {+24d 57' 22"} (J2000),
                 +24.856d {+24d 51' 21"} (current),
                 +25.230d {+25d 13' 49"} (1950)
GRB_DATE:        18226 TJD;   108 DOY;   18/04/18
GRB_TIME:        24246.32 SOD {06:44:06.32} UT
TRIGGER_INDEX:   10418
GRB_PHI:         167.52 [deg]
GRB_THETA:        14.46 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     22.84 [sigma]
IMAGE_SIGNIF:    8.81 [sigma]
LC_URL:          sw00826428000msb.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

Plot creation:
Wed Apr 18 03:15:49 EDT 2018