TDRSS lightcurve for Trigger=1444088

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Jan 26 17:52:30 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1444088,   Seg_Num: 0
GRB_RA:          231.857d {+15h 27m 26s} (J2000),
                 232.177d {+15h 28m 43s} (current),
                 231.242d {+15h 24m 58s} (1950)
GRB_DEC:          +6.758d {+06d 45' 30"} (J2000),
                  +6.669d {+06d 40' 09"} (current),
                  +6.932d {+06d 55' 53"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2334 [image_cnts]
TRIGGER_DUR:     104.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        21067 TJD;    27 DOY;   26/01/27
GRB_TIME:        64234.88 SOD {17:50:34.88} UT
GRB_PHI:         -141.24 [deg]
GRB_THETA:        38.92 [deg]
SOLN_STATUS:     0x20000013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    11.04 [sigma]
MERIT_PARAMS:     +1  +0  +0  +7  +1  +0  +0  +0 -14  +0 
SUN_POSTN:       310.22d {+20h 40m 52s}  -18.31d {-18d 18' 52"}
SUN_DIST:         80.86 [deg]   Sun_angle= 5.2 [hr] (West of Sun)
MOON_POSTN:       54.83d {+03h 39m 19s}  +24.79d {+24d 47' 18"}
MOON_DIST:       148.44 [deg]
MOON_ILLUM:      68 [%]
GAL_COORDS:       11.35, 47.78 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      227.52, 24.75 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
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 = 158.75,6.11 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(33.0<100sec) coincident with the FERMI_GBM event (trignum=791229072).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Jan 26 18:17:00 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     1444088,   Seg_Num: 0
POINT_RA:        231.869d {+15h 27m 29s} (J2000)
POINT_DEC:        +6.762d {+06d 45' 43"} (J2000)
POINT_ROLL:      109.782d
IMG_START_DATE:  21067 TJD;    27 DOY;   26/01/27
IMG_START_TIME:  65102.82 SOD {18:05:02.82} UT,   867.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.510
N_STARS:         124
X_OFFSET:        275 [pixels]
Y_OFFSET:        257 [pixels]
X_MAX:           1714 [pixels]
Y_MAX:           1696 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw01444088000msufc0867.fits
SUN_POSTN:       310.23d {+20h 40m 56s}  -18.31d {-18d 18' 36"}
SUN_DIST:         80.86 [deg]   Sun_angle= 5.2 [hr] (West of Sun)

GCN template for BAT paragraph

At :: UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB  ***A*** (trigger=1444088).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec ,  which is 
   RA(J2000) = h m s
   Dec(J2000) = d ' "
with an uncertainty of 3 arcmin (radius, 90% containment, including 
systematic uncertainty).  The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec.  The peak count rate
was ~1460 counts/sec (15-350 keV), at ~33 sec after the trigger.

Test version of draft template

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

Tilan's background subtracted TDRSS light curves

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

TDRSS extended lightcurve from T0-1 to T0+2

T50 and T90 calculation

******************************************
         battblocks v1.18
------------------------------------------
     Input Data: bat_raw_lc.fits
     Output GTI: bb.gti
 Events to Skip: 128     Changepoint log(prob) Prior: 6.000000
  Internal Tick: 1.000000e-04 s
  Lookback time: 0 s
 Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
  Estimated T90 duration: 9.216 s +/- 1.024 s
  Estimated T50 duration: 6.144 s +/- 1.024 s
  Estimated Peak Interval: MET   791229104.83199990 +/- 0.500000 s
  Estimated background rate 1:     3658.458 near MET 791229071.552000 s
  Estimated background rate 2:     3695.882 near MET 791229239.488000 s
  Estimated total duration: 125.952 s (for data selection)
       (from MET 791229095.104000 to MET 791229221.056000)
  Estimated total fluence: 3281.848290 count
  Created GTI with 7 entries
------------------------------------------
 

Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)

bat_grb_pos_cat.sh   0.083

Usage: bat_grb_pos_cat.sh   []

   Searches through the BAT GRB position (all numbers in degrees)

Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)

python compare_catalog.py  
No match

Link to SIMBAD

Usage elevation_grd_obs.sh (ra) (dec) (UT year) (UT month) (UT day) (UT hour)
 
 
The data/results are in /local/data/bat1/prebascript/trigger1444088/tdrss_ql/
 
bat_raw_lc.fits  : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif     : GIF TDRSS light curve
sc_att.qdp       : QDP file of the spacecraft attitude
sc_att.gif       : GIF spacecraft attitude
bb.gti           : Bayesian block GTI file (battblocks)
dur.gti          : Duration GTI file (battblocks)
battblocks.log   : Output log of battblocks
 

Plot creation:
Tue Jan 27 13:17:43 EST 2026