* 2025.07.10: Updated to version v3.3 for the 1000 square degree wide survey and 50 square degree deep survey simulations. Changes include:
* Updated several detector parameters based on the latest measurements
* Added slitless spectroscopy PSF and LED image generation tools
* Updated spectroscopy dispersion files
* Updated system throughput curves
* Updated FITS header keywords
* Added the `data_set` keyword in the config file
* 2025.05.21: Updated to version v3.2. Changes include:
* Added bright-star PSF extrapolation module
* Added crosstalk simulation module
* Memory optimization for simulations
* Updated FITS header keywords
* Added charge diffusion in the slitless spectroscopy PSF model
* Updated PEP8 formatting conventions
* Bug fixes: truncated magnitude calculation, deep field calculation, slitless spectroscopy PSF, saturation overflow, and truncation issues in channel trailing caused by bad columns
* 2024.08.03: Updated to version v3.1. Changes include:
* Added simulation of the guide-star stabilization process
* Added Milky Way extinction simulation
* Bug fixes: fixed issues such as inconsistent simulated magnitudes caused by filter light leakage
* 2024.05.15: Updated to version v3.0. See the [Software Documentation](https://kdocs.cn/l/cjyiU0SXGyn2) for details of the new features.
* 2023.07.29: Updated to version v2.1. Changes include:
* Added stray-light simulation module with config switch: `enable_straylight_model: True/False`
* Updated WCS definition: `x: E`, `y: -N`
* Updated FITS header keywords
* Adapted to the C6 50-square-degree simulation catalogs
* Bug fixes: fixed incorrect distortion directions caused by field distortion and related issues
* 2023.05.01: Updated to version v2.0. New features include:
* One-degree rotation for slitless spectroscopy detectors
* Simulation of source distortion caused by field distortion
* Guide-star detector simulation
* Updated instrument parameters and bug fixes
* 2022.08.23: Updated to the latest throughput curves and added version information to FITS image headers. Simulation software version numbering was reset; current version is v1.0.4.
* 2022.06.20: Version v0.5 released on the `release_v0.5` branch (Note: version numbering has since been reset to v1.0; current branch is `release_v1.0.0`)
* 2022.04.13: Fixed a calling error in the astrometry module
* 2022.04.08: Fixed issues related to the catalog-only output option (`out_cat_only`)
* Installation and usage instructions are available in the [Software Documentation](https://kdocs.cn/l/cjyiU0SXGyn2)(continuously updated).
<!---
* Simulation data documentation: [C6 Data Documentation](https://www.kdocs.cn/l/cuRmPf71Ly7v)
* Online interface instructions: [CSST Web Interface User Guide](https://kdocs.cn/l/cl81flAXe1YQ)
-->
* Please use GitLab Issues for bug reports and feedback. If you do not have a NAOC GitLab account, please use the [Feedback Form](https://f.kdocs.cn/w/XYcBkE63/).
| **仿真软件及数据** | Mock Observations for the CSST Mission: Main Surveys─An Overview of Framework and Simulation Suite | [10.1088/1674-4527/ae20fe](https://doi.org/10.1088/1674-4527/ae20fe) |
| **仿真软件-无缝光谱** | Mock Observations for the CSST Mission: Main Surveys—The Slitless Spectroscopy Simulation | [10.1088/1674-4527/ae20fa](https://doi.org/10.1088/1674-4527/ae20fa) |
| **仿真软件-星系星表** | Mock Observations for the CSST Mission: Main Surveys─The Mock Catalog | [10.1088/1674-4527/ae20ff](https://doi.org/10.1088/1674-4527/ae20ff) |
| **点扩散函数数据** | Mock Observations for the CSST Mission: End-to-end Performance Modeling of Optical System | [10.1088/1674-4527/ae20fb](https://doi.org/10.1088/1674-4527/ae20fb) |
---
感谢对本项目工作的支持与认可。 -->
## Citation
> **Note:** The software and related data products in this project are intended **for scientific research and academic exchange only**.
If you use this software or related datasets in your research, please cite the corresponding papers and acknowledge this project in your publication or report.
| Category | Paper Title | DOI |
| :--- | :--- | :--- |
| **Simulation Software and Data** | Mock Observations for the CSST Mission: Main Surveys─An Overview of Framework and Simulation Suite | [10.1088/1674-4527/ae20fe](https://doi.org/10.1088/1674-4527/ae20fe) |
| **Simulation Software – Slitless Spectroscopy** | Mock Observations for the CSST Mission: Main Surveys—The Slitless Spectroscopy Simulation | [10.1088/1674-4527/ae20fa](https://doi.org/10.1088/1674-4527/ae20fa) |
| **Simulation Software – Galaxy Catalogs** | Mock Observations for the CSST Mission: Main Surveys─The Mock Catalog | [10.1088/1674-4527/ae20ff](https://doi.org/10.1088/1674-4527/ae20ff) |
| **Point Spread Function Data** | Mock Observations for the CSST Mission: End-to-end Performance Modeling of Optical System | [10.1088/1674-4527/ae20fb](https://doi.org/10.1088/1674-4527/ae20fb) |
---
Thank you for your support and recognition of this project.
* May 8, 2023, Quanzhou, Fujian — CSST Scientific Data Processing System and Science Team Workshop: [Workshop Video](https://pan.baidu.com/s/1VH8rg6jC09ZsVlMmO2zhbQ), Video extraction code: `7hsu`
* April 6, 2022, National Astronomical Observatories — Software Release and Mini Workshop Information: [20220406](https://www.kdocs.cn/l/cnovDlrgyDlu), [Workshop Video](https://pan.baidu.com/s/1eCtLTi3EZ8f6KQGvmqjp_Q?pwd=ow9q), Video extraction code: `ow9q`