Fast Offline Analysis GRB20240905 September2024 P068

From my_wiki
Jump to: navigation, search

General information[edit]

  • Name of the source: GRB20240905
    • Redshift (z) :
    • Other relevant information
    • RA: +23h 03m 12s (hh mm ss), Dec: +35d 31' 12" (dd mm ss)
    • RA, Dec in deg (ICRS): (345.80, 35.52) deg


  • Analysis by:
    • Helena Luciani (University of Trieste - helena.luciani@phd.units.it)


Data-taking information[edit]

  • Dates of data-taking: 2024-09-05
    • Time of observation (h): 3.47 hours
      • ZD range (deg): 0 - 60
      • Observations:

20240905 : [18853 18854 18855 18856 18857 18858 18859 18860 18861 18862]


  • Data quality selection:

GRB240905 dataquality1.PNG GRB240905 dataquality2.PNG


General analysis information[edit]

  • source-independent analysis
  • lstchain version: v0.10.11
  • DL1b standard production (v0.10/tailcut84), run-wise merged files in:

/ fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18853.h5 

/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18854.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18855.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18856.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18857.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18858.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18859.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18860.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18861.h5
/fefs/aswg/data/real/DL1/20240905/v0.10/tailcut84/dl1_LST-1.Run18862.h5

Monte Carlo information[edit]

  • All-sky MC production used: 20240131_allsky_v0.10.5_all_dec_base
  • Declination line (training): dec_3476


Random forest[edit]

Path to the models used: 

/fefs/aswg/data/models/AllSky/20240131_allsky_v0.10.5_all_dec_base/dec_3476


DL2 data[edit]

Config file: 

/fefs/aswg/data/models/AllSky/20240131_allsky_v0.10.5_all_dec_base/dec_3476/lstchain_config_2024-01-31.json

Files in: 

/fefs/aswg/workspace/helena.luciani/fast_offline_analysis/GRB20240905/DL2


DL3 data & IRF[edit]

Files in: 

/fefs/aswg/workspace/helena.luciani/fast_offline_analysis/GRB20240905/DL3

IRFs: 

/fefs/aswg/workspace/helena.luciani/fast_offline_analysis/GRB20240905/IRF/20240131_allsky_v0.10.5_all_dec_base/dec_3476/gh_eff_0.7_th_cont_0.7


Configuration used for producing IRF/DL3 files: 

 "EventSelector": {
   "filters": {
     "intensity": [50, Infinity],
     "width": [0, Infinity],
     "length": [0, Infinity],
     "r": [0, 1],
     "wl": [0.01, 1],
     "leakage_intensity_width_2": [0, 1],
     "event_type": [32, 32]
   }
 },
 "DL3Cuts": {
   "min_event_p_en_bin": 100,
   "min_gh_cut": 0.1,
   "max_gh_cut": 0.95,
   "min_theta_cut": 0.0,
   "max_theta_cut": 0.2,
   "fill_theta_cut": 0.2,
   "allowed_tels": [1]
 },
  • Standard cuts: Intensity > 50 p.e., 70 % efficiency for both gammaness and theta gamma-ray selection energy-dependent cuts.
  • Point-like IRF.


High-level analysis and results[edit]

Analysis settings[edit]

  • Gammapy version: 1.1
  • 1D analysis


Theta2 plot[edit]

Settings:

  • Theta2 cut for signal extraction: 0.04 deg2
  • Normalization range: 0.1 - 0.4 deg2
  • Number of off positions: 3
  • Energy range: 0.01 - 10 TeV


  • 2024-09-05: No detection

GRA20240905 theta2.PNG


Significance and Excess sky maps[edit]

GRA20240905 skymap.PNG

Retrieved from "https://www.lst1.iac.es/wiki/index.php?title=Fast_Offline_Analysis_GRB20240905_September2024_P068&oldid=11344"