TDRSS lightcurve for Trigger=1099310

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 25 Mar 22 17:16:36 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1099310,   Seg_Num: 0
GRB_RA:          269.485d {+17h 57m 56s} (J2000),
                 269.785d {+17h 59m 08s} (current),
                 268.810d {+17h 55m 15s} (1950)
GRB_DEC:          -7.031d {-07d 01' 50"} (J2000),
                  -7.031d {-07d 01' 52"} (current),
                  -7.027d {-07d 01' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4056 [cnts]    Image_Peak=234 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 15-50 keV
BKG_INTEN:       24316 [cnts]
BKG_TIME:        62171.15 SOD {17:16:11.15} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19663 TJD;    84 DOY;   22/03/25
GRB_TIME:        62183.05 SOD {17:16:23.05} UT
GRB_PHI:         -25.47 [deg]
GRB_THETA:        38.41 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.84 [sigma]
IMAGE_SIGNIF:    10.22 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  +0  +0  +1  +9  +0 
SUN_POSTN:         4.63d {+00h 18m 30s}   +2.00d {+02d 00' 08"}
SUN_DIST:         95.05 [deg]   Sun_angle= 6.3 [hr] (West of Sun)
MOON_POSTN:      282.67d {+18h 50m 41s}  -26.76d {-26d 45' 48"}
MOON_DIST:        23.22 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:       20.46,  8.54 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      269.47, 16.41 [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 = 189.97,20.46 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 25 Mar 22 17:34:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1099310,   Seg_Num: 0
GRB_RA:          269.485d {+17h 57m 56s} (J2000),
                 269.785d {+17h 59m 08s} (current),
                 268.810d {+17h 55m 15s} (1950)
GRB_DEC:          -7.031d {-07d 01' 50"} (J2000),
                  -7.031d {-07d 01' 52"} (current),
                  -7.027d {-07d 01' 35"} (1950)
GRB_DATE:        19663 TJD;    84 DOY;   22/03/25
GRB_TIME:        62183.05 SOD {17:16:23.05} UT
TRIGGER_INDEX:   137
GRB_PHI:         -25.47 [deg]
GRB_THETA:        38.41 [deg]
DELTA_TIME:      -69.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.84 [sigma]
IMAGE_SIGNIF:    10.22 [sigma]
LC_URL:          sw01099310000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 17:16:23 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220325 ***A*** (trigger=1099310).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 269.485, -7.031 which is 
   RA(J2000) = 17h 57m 56s
   Dec(J2000) = -07d 01' 50"
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 ~2308 counts/sec (15-350 keV), at ~1 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: 34.56 s +/- 31.3923 s
  Estimated T50 duration: 33.408 s +/- 64.2443 s
  Estimated Peak Interval: MET   669921412.86400008 +/- 0.500000 s
  Estimated background rate 1:     5260.331 near MET 669921398.912000 s
  Estimated background rate 2:     5764.766 near MET 669921537.728000 s
  Estimated total duration: 67.712 s (for data selection)
       (from MET 669921410.624000 to MET 669921478.336000)
  Estimated total fluence: 2714.271901 count
  Created GTI with 8 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 269.485 -7.031 0.083
No match

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

    python compare_catalog.py 269.485 -7.031
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

    GSFC, Greenbelt, Maryland
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 353.606649  52.808885
 Obj: 2022 3 25 17 85.132749  -5.210006
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 302.098203  43.584858
 Obj: 2022 3 25 17 64.985188  23.292903
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 297.937518  38.381297
 Obj: 2022 3 25 17 59.974731  27.000328
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 270.678931  7.750233
 Obj: 2022 3 25 17 25.622670  60.476193
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 297.940554  -40.715013
 Obj: 2022 3 25 17 248.144442  43.061360
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 218.592010  -46.467646
 Obj: 2022 3 25 17 294.140237  20.091554
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 73.420050  31.139785
 Obj: 2022 3 25 17 121.642449  -54.336315
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 3 25 17 176.192660  57.584061
 Obj: 2022 3 25 17 80.456175  -2.369587
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1099310/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 25 13:34:23 EDT 2022