Spin-based map-making simulation

This code assesses the impact of differential systematics on CMB polarisation observations.

ScanFields such as hit-map and cross-link map, pre-simulated by Falcons.jl, are coupled with sky temperature and polarization fields, including systematics effects, at a given $spin$.

Instllation

git clone https://github.com/yusuke-takase/SBM.git
cd SBM
pip install -e .

Database instllation

The SBM needs a database which includes cross-link data in HDF5 format. By following command, you can install the path of database in local storage.

python -m sbm.install_db

Tutorials

There are several tutorials in the notebooks. Although you need to download the required ScanFields datased given by Falcons, you can simulate any time-independent systematics if you have a signal model. Now, following systematics are implemented:

• Differential gain
• Differential pointing
• Absolute pointing offset with HWP Y. Takase et al.
• HWP non-ideality G. Patanchon et al.