Open Access

Table A.1

Employed data cleaning procedures for JIRAM and NIRSpec.

Parameter Value Reference
NIRSpec data cleaning

Preliminary reduction JWSTGiantPlanets/pipelines King et al. (2023)
G235H - G395H aligning condition 0.2°
Maximum allowed NaN per spectrum 1999
Wavelengths removed [[1.66,1.8], [2.17,2.5], [3.95,4.25], [4.73,5.2]]
Interpolation of remaining NaN CubicSpline Virtanen et al. (2020)
Viewing conditions 20° < i < 40°, 20° < ε < 40°
Total number of cleaned spectra 8292

JIRAM data cleaning

Viewing conditions G21 subset 40° < i < 50°, 40° < ε < 50°
Viewing conditions GRS subset 20° < i < 40°, 50° < ε < 80°
Spike detection threshold 5 Whitaker & Hayes (2018)
Total number of cleaned spectra G21 subset 11180
Total number of cleaned spectra GRS subset 3763

PCA+GMM with chopper.py

Default PCA explained variance threshold 95 %
Default number of clusters Elbow method with k-means

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