This page collects a variety of public resources on CMB data analysis. This includes tutorials and notebooks as well as webinars, some of which focus on data releases from specific CMB experiments.

Code Notebooks

• CMB Analysis Summer School Notebooks
  These work through various CMB analysis techniques using only Python/numpy and no specialized libraries

  • Intro to FFTs

  • Part 1 - Temperature maps

  • Part 2 - Simulating point source and SZ foregrounds

  • Part 3 - Beam, noise and filtering

  • Part 4 - Power spectra

  • Part 5 - Matched filters

  • Part 6 - Working with real data

  • Part 7 - Polarization map analysis

  • Part 8 - Cosmological likelihood analysis and MCMC

  • Part 9 - Map-making

  • Part 10 - Simulating lensing

  • Part 11 - Foregrounds and ILC component separation

  • Part 12 - Lensing reconstruction

• ACT DR6 Notebooks (released 2024-2025)

  • Maps and TOD Notebooks

    • ACT DR6 map manipulation and showcase

    • Working with “depth-1” maps for transients

    • Understanding the TOD processing

    • Classifying TOD events

  • Power Spectrum and Likelihood Notebooks

    • Working with the ACT DR6 power spectra and likelihoods

  • Gravitational Lensing

    • Loading and plotting CMB lensing maps alongside the CIB

    • Transfer functions for cross-correlations

    • Loading and plotting the CMB auto-spectrum from the likelihood

    • MCMC with emulators

  • Compton-y (tSZ)

    • Assessing CIB contamination in the Compton-y map

    • Stacking galaxy clusters in the Compton-y map

• ACT DR4/DR5 Notebooks (released 2021)
  These work through ACT DR4/DR5 products using the pixell map manipulation library

  • Sec 1 - Introduction

  • Sec 2 - Working with co-added per-frequency maps

  • Sec 3 - Converting between healpix and rectangular pixels

  • Sec 4 - Visualizing objects in the maps

  • Sec 5 - Working with DR4 lensing maps

  • Sec 6 - Working with DR4 component separated maps

  • Sec 7 - Flat-sky power spectra of DR4/DR5 maps

  • Sec 8 - Curved-sky MASTER formalism on DR4 maps

  • Sec 9 - Modeling and simulating DR4 noise

  • Sec 10 - Calculating DR4 E, B maps

  • Sec 11 - Interacting with the DR4 likelihood

  • Sec 12 - DR4 delensed power spectra

Webinars

• July 16th, 2020: “ACT: Cosmological Results from DR4 CMB Power Spectra” 

• Aug 10th, 2020: “ACT DR4 Data Products”

• Sept 24, 2020: "ACT: Astrophysical Evolution with tSZ and kSZ Data from DR5"

• April 11, 2023: "ACT DR6:  Cosmology with Gravitational Lensing of the CMB"

• April 18, 2024: “ACT DR6 Compton-y ILC products”

• April 19, 2024: “ACT DR6 CMB Lensing products”

• March 24, 2025: “ACT DR6 Maps, Spectra and Likelihood products”

Tutorial videos

• Short introduction to rectangular pixel map manipulation with pixell

Similar resources in other areas

• LSST Dark Energy Schools

Please reach out to Mathew Madhavacheril (mathm@sas.upenn.edu) if you would like to add links here.