Using Simulation Data
=====================

Versions
--------
The current available CSST simulation data products are not versioned.
Therefore, in pipeline system, we use ``ver_sim`` keyword in code (e.g., ``CsstMsDataManager``).
The ``ver_sim`` uses a ``C{X}.{Y}`` format string, where
``X`` denotes the Cycle during which the simulation is released,
and ``Y`` denotes the serial number.
For example, ``C5.2`` represents for the second released version of simulation in Cycle 5.


Server details
--------------

Server
   ``dandelion``.
   The ``IP``, ``Username`` and ``Password`` are available via request to ``csst_das@nao.cas.cn``.
Simulation data path
   - ``C5.2``: ``/nfsdata/share/csst_simulation_data/Cycle-5-SimuData``
   - ``C3``: ``/nfsdata/share/csst_simulation_data/Cycle-3-SimuData``

.. note::
    Presently, the ``CsstMsDataManager`` only supports ``C5.2`` simulation.


Naming conventions
------------------

.. code-block:: python

    >>> import re
    >>> pattern = re.compile(
    >>>     r"CSST_"
    >>>     r"(?P<facility>[A-Z]+)_"
    >>>     r"(?P<project>[A-Z]+)_"
    >>>     r"(?P<data_type>[A-Z]+)_"
    >>>     r"(?P<t_start>[0-9]{14})_"
    >>>     r"(?P<t_stop>[0-9]{14})_"
    >>>     r"(?P<obs_id>[0-9]{9})_"
    >>>     r"(?P<detector>[0-9]{2})_"
    >>>     r"L(?P<level>[0-9]+)_"
    >>>     r"(?P<version>[A-Z0-9]+).fits"
    >>> )
    >>> mo = re.search(pattern, r"CSST_MSC_MS_SCI_20270626203558_20270626203828_100000066_01_L0_1.fits")
    >>> print(mo.groupdict())
    {'facility': 'MSC', 'project': 'MS', 'data_type': 'SCI', 't_start': '20260612100759', 't_stop': '20260612101029', 'obs_id': '100000036', 'detector': '16', 'level': '0', 'version': '1'}