Analysis A. Aguasca-Cabot lstchain v0.9.X AllSky

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Overview

  • Source-dependent/independent analysis using LSTCHAIN v0.9.6 and the branch "interp_irfs" with last commit e5835d5ab7792cbb528118de9cebe4a60f7802a8. The MC production processed with LSTOSA v0.8.2 using LSTCHAIN v0.9.6
  • Cleaning method tail cut 84 and dynamic cleaning. Also, the MC files are tuned to match the NSB in the FoV and the PSF.
  • Observations used in the analysis:

Monte Carlo information

  • AllSky MC prodution.
  • Link to MC files used: /fefs/aswg/data/mc/DL1/AllSky/galsource_min_413_tuned_nsb/...
- Particle types: gamma diffuse and protons
- MC prod (deg): galsource_min_413_tuned_nsb
- Dec band (deg): dec_min_431
- Other information: MC production through PR in lstMCpipe Github webpage (https://github.com/cta-observatory/lstmcpipe/tree/master/production_configs/20220523_dec_413_tuned_nsb)
- MC files are tuned to match the NSB in the FoV and the PSF.

DL1 data

  • Processed with LSTOSA using LSTCHAIN v0.9.6.
- Dynamic cleaning and tail cut cleaning with pedestal threshold applied by the the standard parameters using pipeline LSTOSA.
 "dynamic_cleaning": {
   "apply": true,
   "threshold": 267,
   "fraction_cleaning_intensity": 0.03
 }

Real data

  • Parameters for the tail cut cleaning with pedestal threshold
 "tailcuts_clean_with_pedestal_threshold": {
   "picture_thresh":8,
   "boundary_thresh":4,
   "sigma":2.5,
   "keep_isolated_pixels":false,
   "min_number_picture_neighbors":2,
   "use_only_main_island":false,
   "delta_time": 2
 }
  • Original DL1a files (processed up to DL1 by LSTOSA using LSTCHAIN v0.9.2)
/fefs/aswg/data/real/DL1/{}/v0.9/tailcut84/dl1_LST-1.RunXXXXX.XXXX.h5

MC data

  • Tuned NSB
   "increase_nsb": true,
   "extra_noise_in_dim_pixels": 0.937,
   "extra_bias_in_dim_pixels": 0.323,
   "transition_charge": 8,
   "extra_noise_in_bright_pixels": 1.041,


  • Tuned PSF
   "increase_psf": true,
   "smeared_light_fraction": 0.175

  • Original DL1a files
/fefs/aswg/data/mc/DL1/AllSky/galsource_min_413_tuned_nsb/{TrainingDataset,TestingDataset}/dec_min_413/{particle}/node...

Random forest

  • Dispnorm parameterisation
  • Source-dependent
- LSTCHAIN v0.9.6
- Config file:
/fefs/aswg/workspace/arnau.aguasca/scripts/_configs/lstchain_src_dep_tailcut84_config_dispnorm_v0.9.4.json
- path:
/fefs/aswg/workspace/MC_data_simlink/models/AllSky/galsource_min_413_tuned_nsb_srcdep/dec_min_413/
  • Source-independent
- Processed with lstMCpipe using LSTCHAIN v0.9.6.
- Path:
/fefs/aswg/data/models/AllSky/galsource_min_413_tuned_nsb/dec_min_413/

DL1 to DL2 data

Real data

  • Source-dependent
- LSTCHAIN v0.9.6
- Config file:
/fefs/aswg/workspace/arnau.aguasca/scripts/_configs/RSOph/analysis_v0.9.6/lstchain_config_srcdep_lstmcpipe_tailcut84_dispnorm_v0.9.6.json
  • Source-independent
- LSTCHAIN v0.9.6
- Config file:
/fefs/aswg/workspace/arnau.aguasca/scripts/_configs/RSOph/analysis_v0.9.6/lstchain_config_lstmcpipe_tailcut84_dispnorm_v0.9.6.json

MC data

  • Source-dependent
- Processed with lstMCpipe using LSTCHAIN v0.9.6.
- Config file:
/fefs/aswg/workspace/arnau.aguasca/scripts/_configs/RSOph/analysis_v0.9.4/lstchain_config_srcdep_lstmcpipe_tailcut84_dispnorm_v0.9.6.json
  • Source-independent
- Processed with lstMCpipe using LSTCHAIN v0.9.6.
- Config file:
/fefs/aswg/data/models/AllSky/galsource_min_413_tuned_nsb/dec_min_413/lstchain_config_2022-05-23.json

Quality cuts optimization

DL3 data selection

  • Source-dependent
    - Quality cuts
 "EventSelector": {
   "filters": {
     "intensity": [50, Infinity],
     "width": [0, Infinity],
     "length": [0, Infinity],
     "r": [0, 1],
     "wl": [0.1, 1],
     "leakage_intensity_width_2": [0, 0.2],
     "event_type" : [32, 32]
   }
 },
 "DL3FixedCuts": {
   "fixed_gh_cut": 0.9,
   "fixed_alpha_cut": 10,
   "allowed_tels": [1]
 }
  • Source-independent
    - Quality cuts
 "EventSelector": {
   "filters": {
     "intensity": [50, Infinity],
     "width": [0, Infinity],
     "length": [0, Infinity],
     "r": [0, 1],
     "wl": [0.1, 1],
     "leakage_intensity_width_2": [0, 0.2],
     "event_type" : [32, 32]
   }
 },
 "DL3FixedCuts": {
   "fixed_gh_cut": 0.8,
   "fixed_theta_cut": 0.141,
   "allowed_tels": [1]
 }

High-level analysis

  • Source-dependent
    - IRF: point-like, single-offset
/fefs/aswg/workspace/arnau.aguasca/scripts/_configs/RSOph/XXXX
- Produced DL3 files
/fefs/aswg/workspace/arnau.aguasca/XXXX
  • Source-independent

Analysis results

  • High level analysis performed with gammapy-v0.20.1

Alpha plot

  • Filters in EventSelector applied:
 "EventSelector": {
   "filters": {
     "intensity": [50, Infinity],
     "width": [0, Infinity],
     "length": [0, Infinity],
     "r": [0, 1],
     "wl": [0.1, 1],
     "leakage_intensity_width_2": [0, 0.2]
   }
 }

See section Quality cuts optimization to know more about the justification of the applied cuts.