Editing GRB220930A

Go back to [[Transient Working Group]].

Go Back to [https://www.lst1.iac.es/wiki/index.php/Transient_observation_logbook Gamma-Ray Bursts (GRBs)].


== Alert Information ==

* '''Name/type of the alert''':
* '''GCN notice''': [https://gcn.gsfc.nasa.gov/other/1125809.swift]
* '''Triggered by''': Swift BAT
* '''Alert coordinates''': 
** RA: 4 h 18 m 56.952 s, Dec: +13 deg 21 m 6.120 s
** RA, Dec in deg (ICRS): 64.73730 deg, 13.35170 deg
* '''Alert arrival time''': 11:12:18  UTC
* '''Other relevant information''':
** Redshift (z): 

==Multi-wavelength Observations==

== LST Observations ==

* '''Dates of data-taking''': 2022-09-30
** 2022-09-30
*** Zenith range (deg): 52.6 -> 20.4
*** Transmission9km:  
*** Observation condition: dark
*** Observation mode: std wobble
*** Runs: 9443 - 9450
*** Joint observations with MAGIC? : Yes
*** ELOG link: [https://www.lst1.iac.es/elog/LST+commissioning/2412]
*** Important comments: 

== Analysis by Kenta (Kyoto) ==

=== Data info ===

* Overall selected observation time: 134.6 min (2.24 h)
* Selected runs: 9443 - 9450
* Position analyzed: RA 64.71717 deg, Dec +13.34902 deg

=== DL1 data ===

Used DL1b files produced by LSTOSA (lstchain v0.9.6)

 /fefs/aswg/data/real/DL1/20220930/v0.9/tailcut84/

=== DL2 data ===

* Random forest: 

 /fefs/aswg/data/models/AllSky/20220511_allsky_std/dec_931

* lstchain v0.9.6 with config file taken from the All Sky model 

 /fefs/aswg/data/models/AllSky/20220511_allsky_std/dec_931/lstchain_84.json

=== Theta2 plot from DL2===

*Cuts and parameters used:
**intensity > 50
**gammaness > 0.6
**leakage < 0.2

{| align='center'
| [[Image: GRB220930A_theta2_kenta.png|thumb|400px|center|alt=Theta2 plot for GRB220930A.|Theta2 plot for GRB220930A.]]
| [[Image: GRB220930A_sig_evo_kenta.png |thumb|400px|center|alt=Significance evolution plot for GRB220930A.| Significance evolution plot for GRB220930A.]]
|}