What is the liquidation fee for Deribit?

Could you please clarify for me what the liquidation fee is for Deribit? I'm interested in understanding the specific cost associated with this process, as I'm considering using the platform for my cryptocurrency trading activities. Is this fee a flat rate, or does it vary based on certain factors? And how does Deribit determine when a position needs to be liquidated? Understanding these details will help me make an informed decision about whether or not to use Deribit for my trading needs. Thank you for your assistance.