TDRSS lightcurve for Trigger=1160641

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 20 Mar 23 07:54:19 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1160641,   Seg_Num: 0
GRB_RA:          248.508d {+16h 34m 02s} (J2000),
                 248.936d {+16h 35m 45s} (current),
                 247.588d {+16h 30m 21s} (1950)
GRB_DEC:         -47.365d {-47d 21' 54"} (J2000),
                 -47.412d {-47d 24' 43"} (current),
                 -47.261d {-47d 15' 40"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1571 [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:        20023 TJD;    79 DOY;   23/03/20
GRB_TIME:        28385.04 SOD {07:53:05.04} UT
GRB_PHI:         -167.00 [deg]
GRB_THETA:        22.94 [deg]
SOLN_STATUS:     0x11D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.84 [sigma]
MERIT_PARAMS:     +0  +0 +95  +6  +1  +0  +0  +1 +23  +0 
SUN_POSTN:       359.50d {+23h 57m 59s}   -0.22d {-00d 13' 07"}
SUN_DIST:        103.58 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      343.56d {+22h 54m 13s}  -11.44d {-11d 26' 19"}
MOON_DIST:        84.69 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      336.93,  0.27 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      254.10,-25.11 [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 matches a source in the on-board catalog: Num=10630=IGR16358-4726,   delta=0.319 [deg].  
COMMENTS:        This matches a source in the ground catalog: 4U_1630-472,   delta=0.028 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 204.39,-10.42 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 20 Mar 23 08:10:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1160641,   Seg_Num: 0
GRB_RA:          248.508d {+16h 34m 02s} (J2000),
                 248.936d {+16h 35m 45s} (current),
                 247.588d {+16h 30m 21s} (1950)
GRB_DEC:         -47.365d {-47d 21' 54"} (J2000),
                 -47.412d {-47d 24' 43"} (current),
                 -47.261d {-47d 15' 40"} (1950)
GRB_DATE:        20023 TJD;    79 DOY;   23/03/20
GRB_TIME:        28385.04 SOD {07:53:05.04} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -167.00 [deg]
GRB_THETA:        22.94 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x11D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.84 [sigma]
LC_URL:          sw01160641000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 07:53:05 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230320 ***A*** (trigger=1160641).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 248.508, -47.365 which is 
   RA(J2000) = 16h 34m 02s
   Dec(J2000) = -47d 21' 54"
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 ~734 counts/sec (15-350 keV), at ~7 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 background rate 1:     3053.704 near MET 700991668.288000 s
  Estimated background rate 2:     3100.080 near MET 700991773.248000 s
  Estimated total fluence: 0.000000 count
  Created GTI with 2 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 248.508 -47.365 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 248.508 -47.365
4U 1630-472 10022 248.504 -47.393 0.028132325594297493

    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: 2023 3 20 8 233.992684  -36.280685
 Obj: 2023 3 20 8 341.027826  -0.158916
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 192.717928  -57.911520
 Obj: 2023 3 20 8 322.699426  -7.085454
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 181.346953  -56.873879
 Obj: 2023 3 20 8 319.954063  -11.538255
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 113.302377  -48.089063
 Obj: 2023 3 20 8 314.015338  -26.077884
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 91.547569  2.920389
 Obj: 2023 3 20 8 348.258453  -9.823913
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 78.231536  16.187009
 Obj: 2023 3 20 8 358.134660  -76.991116
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 274.899520  8.371492
 Obj: 2023 3 20 8 20.221338  9.063542
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 20 8 295.721703  -36.250299
 Obj: 2023 3 20 8 320.683133  65.522201
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1160641/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:
Mon Mar 20 04:10:24 EDT 2023