Fast Offline Analysis gw-alerts241125 November 2024 P071

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Fast offline analysis template

Name your fast offline analysis wiki page following the scheme:

Fast_Offline_Analysis_SourceName_Month(s)_Year_ObsPeriod

where:

• ObsPeriod should be e.g. P063

For example: https://www.lst1.iac.es/wiki/index.php/Fast_Analysis_OP313_ToO_Feb_Mar_2024_P062

General information

• Name of the source:
• Brief description of the source:
  • Object type :
  • Redshift (z) :
  • Other relevant information
  • RA: XX XX XX.XXX (hh mm ss), Dec: YY YY YY.YYY (dd mm ss)
  • RA, Dec in deg (ICRS): XX.XX, YY.YY

• Analysis by:
  • Analyzer 1 name (Institute - email)
  • Analyzer 2 name (Institute - email)

Data-taking information

• Dates of data-taking:
  • Date (time of observation h)
    • ZD range (deg): Zenith Range
    • Observations: (see example below)

2024-02-28: [16895, 16896, 16897, 16898]

• Data quality selection: it is not mandatory to apply data selection for these preliminary analyses. But if you do it and select good-quality runs, please also add the plot in which the distribution of the different quality parameters are shown together with the limit values.
• Joint observations with MAGIC?:
• Information on data-taking (observations summaries): Write here if there was any problem with data-taking. (check ELOG for weather info, rate values and e.g. add link https://www.lst1.iac.es/datacheck/observation_overview/2024/03/run_summary_2024_03_17.pdf)

General analysis information

• source-independent analysis
• lstchain version: (e.g. v0.10.10)
• DL1b standard production (v0.10/tailcut84), run-wise merged files in:

/fefs/aswg/data/real/DL1/YYYYMMDD/v0.10/tailcut84/dl1_LST-1.Run?????.h5

Monte Carlo information

Write below the MC production ID among the existing MC

• All-sky MC production used: (e.g. 20230901_v0.10.4_allsky_base_prod)
• Declination line (training): dec_XXXX

Random forest

Path to the models used: (example below)

/fefs/aswg/data/models/AllSky/20230901_v0.10.4_allsky_base_prod/dec_3476

DL2 data

The config file to produce the DL2 files must be the one used to produce the RF models. Should be located together with model's files.

Files in:

/fefs/aswg/workspace/daniel.morcuende/data/real/DL2/OP313_ToO_Dec2023/dec_3476

DL3 data & IRF

(Specify the path to your DL3 files so the other FOA or anyone can also use the files for performing a stacked analysis with all available DL3 data)

Files in:

/fefs/aswg/workspace/your.name/files/to/your/dl3/files

Configuration used for producing IRF/DL3 files (you can leave standard settings):

 "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.
• Recommended to produce unzipped DL3 files since the Gammapy analysis Gammapy is faster.
• You can set the max theta cut (and filling value to the same value) to e.g. 0.2 deg. In this way, you can use more off-regions in Gammapy.
• Point-like IRF.

High-level analysis and results

Analysis settings

• Gammapy version: 1.1
• 1D analysis (point-like IRF)

Theta2 plot

Settings:

• Theta2 cut for signal extraction: X.XX deg2
• Normalization range: X.X - Y.Y deg2
• Number of off positions:
• Energy range:

Daily results

• YYYY-MM-DD

600 px

Spectral results

Include the spectral parameters (see example below) and the SED plot (best-fit model + spectral flux points)

For example:

  type      name      value         unit        error      min    max frozen is_norm link
-------- ---------- ---------- -------------- --------- --------- --- ------ ------- ----
spectral      index 2.8255e+00                3.298e-01 1.000e+00 nan  False   False     
spectral  amplitude 1.7730e-09 TeV-1 s-1 cm-2 4.988e-10       nan nan  False    True     
spectral  reference 1.0000e+02            GeV 0.000e+00       nan nan   True   False