TDRSS lightcurve for Trigger=1500295
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 13 Mar 26 12:40:22 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1500295, Seg_Num: 0
GRB_RA: 353.407d {+23h 33m 38s} (J2000),
353.744d {+23h 34m 58s} (current),
352.765d {+23h 31m 04s} (1950)
GRB_DEC: -2.893d {-02d 53' 32"} (J2000),
-2.748d {-02d 44' 51"} (current),
-3.169d {-03d 10' 07"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=2124 [image_cnts]
TRIGGER_DUR: 64.000 [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: 21112 TJD; 72 DOY; 26/03/13
GRB_TIME: 45546.62 SOD {12:39:06.62} UT
GRB_PHI: -150.12 [deg]
GRB_THETA: 46.99 [deg]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 11.78 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +1 -100 +0 -99 +0
SUN_POSTN: 353.52d {+23h 34m 06s} -2.80d {-02d 47' 53"}
SUN_DIST: 0.22 [deg] Sun_angle= -0.0 [hr] (East of Sun)
MOON_POSTN: 288.22d {+19h 12m 53s} -26.63d {-26d 38' 00"}
MOON_DIST: 66.96 [deg]
MOON_ILLUM: 30 [%]
GAL_COORDS: 82.07,-59.44 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 352.80, -0.04 [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 = 289.69,20.44 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 13 Mar 26 12:52:03 UT
NOTICE_TYPE: SWIFT Actual Pointing Direction
CURR_POINT_RA: 359.995d {+23h 59m 59s} (J2000)
CURR_POINT_DEC: +43.991d {+43d 59' 29"} (J2000)
CURR_POINT_ROLL: 203.999d
SLEW_TIME: 46317.09 SOD {12:51:57.09} UT
SLEW_DATE: 21112 TJD; 72 DOY; 26/03/13
TGT_NUM: 3612475, Seg_Num: 1
SUN_POSTN: 353.53d {+23h 34m 08s} -2.80d {-02d 47' 42"}
SUN_DIST: 47.33 [deg] Sun_angle= -0.4 [hr] (East of Sun)
MOON_POSTN: 288.33d {+19h 13m 19s} -26.62d {-26d 36' 56"}
MOON_DIST: 96.53 [deg]
MOON_ILLUM: 30 [%]
GAL_COORDS: 113.24,-17.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS: 21.00, 39.59 [deg] ecliptic lon,lat of the pointing direction
COMMENTS: SWIFT has settled on a new target (pointing direction).
COMMENTS: The SLEW_TIME field represents the end of the slew plus ~30 sec for the ground s/w to detect the slew_settled state.
COMMENTS: Note that this is the actual pointing direction -- the result of PPST or a TOO.
COMMENTS: The spacecraft longitude,latitude at Notice_time is 334.39,13.14 [deg].
GCN template for BAT paragraph
Click here!
At :: UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB ***A*** (trigger=1500295). 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 ~894 counts/sec (15-350 keV), at ~6 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
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: 64.512 s +/- 2.98545 s
Estimated T50 duration: 32.768 s +/- 4.096 s
Estimated Peak Interval: MET 795098461.37599993 +/- 0.500000 s
Estimated background rate 1: 3957.446 near MET 795098380.480000 s
Estimated background rate 2: 3846.831 near MET 795098526.912000 s
Estimated total duration: 82.944 s (for data selection)
(from MET 795098400.960000 to MET 795098483.904000)
Estimated total fluence: 14284.903619 count
Created GTI with 5 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
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
Usage elevation_grd_obs.sh (ra) (dec) (UT year) (UT month) (UT day) (UT hour)
The data/results are in /local/data/bat1/prebascript/trigger1500295/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:
Fri Mar 13 08:52:44 EDT 2026