Jackknife dataset

Simple example of jacknnife generation on G2 dataset from the N2CLS GTO.

First import the nikamap.jackkinfe class

from pathlib import Path
from nikamap import Jackknife

This define the root directory where all the data …

DATA_DIR = Path("/data/NIKA/Reduced/G2_COMMON_MODE_ONE_BLOCK/v_1")

can be retrieved using a simple regular expression

filenames = list(DATA_DIR.glob('*/map.fits'))
filenames

Create a jackknife object for future use in, for e.g., a simulation,

Note

by default the constructor will read all the maps in memory

jacks = Jackknife(filenames, n=10)

The jacks object can be iterated upon, each of the items is a different jackknife with noise properties corresponding to the original dataset

for nm in jacks:
    print(nm.check_SNR())