Difference between revisions of "GRB220310A"

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(Analysis by Kenta)
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* '''Cuts and parameters used''':  
 
* '''Cuts and parameters used''':  
 
** intensity > 50
 
** intensity > 50
** gammaness > 0.7
+
** gammaness > 0.4, 0.7
 
** leakage < 0.2
 
** leakage < 0.2
  
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{| align='center'
 
{| align='center'
| [[Image:MAXI220310A_th2_1strun_Kenta.png|thumb|600px|center|alt=Theta2 plot for GRB220310A.|Theta2 plot for GRB220310A using only 1st run]]
+
| [[Image:MAXI220310A_th2_1strun_gh04_Kenta.png|thumb|600px|center|alt=Theta2 plot for GRB220310A.|Theta2 plot for GRB220310A using only 1st run; gammaness > 0.4]]
| [[Image:MAXI220310A_th2_allrun_Kenta.png|thumb|600px|center|alt=Theta2 plot for GRB220310A.|Theta2 plot for GRB220310A using all runs]]
+
| [[Image:MAXI220310A_th2_1strun_Kenta.png|thumb|600px|center|alt=Theta2 plot for GRB220310A.|Theta2 plot for GRB220310A using only 1st run; gammaness > 0.7]]
 +
|}
 +
 
 +
{| align='center'
 +
| [[Image:MAXI220310A_th2_allrun_gh04_Kenta.png|thumb|600px|center|alt=Theta2 plot for GRB220310A.|Theta2 plot for GRB220310A using only all runs; gammaness > 0.4]]
 +
| [[Image:MAXI220310A_th2_allrun_Kenta.png|thumb|600px|center|alt=Theta2 plot for GRB220310A.|Theta2 plot for GRB220310A using all runs; gammaness > 0.7]]
 
|}
 
|}

Revision as of 04:53, 4 April 2022

Go back to Transient observation logbook.


Alert Information

  • Name/type of the alert: Name
  • GCN notice: https://gcn.gsfc.nasa.gov/gcn3/31725.gcn3
  • Triggered by: MAXI
  • Alert coordinates:
    • RA: 11 13 02.33 (hh mm ss), Dec: +23 15 08 (dd mm ss)
    • RA, Dec in deg (ICRS): 168.2597083, +23.2522222
  • Alert arrival time: 2022-03-10 01:01:48 UTC
  • Other relevant information:
    • Redshift (z):

LST Observations

  • Dates of data-taking: 2022-03-09
    • 2022-03-09
      • Zenith range (deg): 6 -> 35
      • Transmission9km:
      • Observation condition: moon -> dark
      • Observation mode: std wobbles
      • Runs: 7371 - 7378 (moon: 7371,7372)
      • Joint observations with MAGIC? : No
      • ELOG link: Logbook URL
      • Important comments: NSB level of Run7371,7372 should be below 2x dark NSB according to PMT anode current

Analysis by Kenta

Analysis configuration

  • Analyzer: Kenta Terauchi (Kyoto Univ., email: terauchi.kenta.74s@st.kyoto-u.ac.jp)
  • Software versions:
    • lstchain v0.9.2
  • Cuts and parameters used:
    • intensity > 50
    • gammaness > 0.4, 0.7
    • leakage < 0.2
  • DL1 files :

Used DL1b files produced by LSTOSA (lstchain v0.9.X)

/fefs/aswg/data/real/DL1/20220302/v0.9/tailcut84/dl1_LST-1.Run0{7371-7378}.h5
  • Random Forest :

src-indep (diffuse gamma, src_r<3deg, disp_norm)

/fefs/aswg/data/models/20200629_prod5_trans_80/zenith_20deg/south_pointing/20220215_v0.9.1_prod5_trans_80_local_tailcut_8_4
  • DL2 MC data for IRF:
  • Overall selected observation time: 132 min (2.2 h)
  • Position analyzed: 168.2597083, 23.2522222 (deg)
  • Analysis/data problems:

Theta2 plot

  • theta < 0.2
  • norm_range_theta2: 0.3 - 0.5


Theta2 plot for GRB220310A.
Theta2 plot for GRB220310A using only 1st run; gammaness > 0.4
Theta2 plot for GRB220310A.
Theta2 plot for GRB220310A using only 1st run; gammaness > 0.7
Theta2 plot for GRB220310A.
Theta2 plot for GRB220310A using only all runs; gammaness > 0.4
Theta2 plot for GRB220310A.
Theta2 plot for GRB220310A using all runs; gammaness > 0.7