### Description of the Planck Revisited CO data products

#### The Planck Revisited CO data products are described in the Ghosh, Remazeilles and Delabrouille 2023: Planck CO maps revisited.
Please cite Ghosh, Remazeilles and Delabrouille A&A, Volume 688, id.A54, 2024 when using the Planck Revisited data products.

BibTex:
@ARTICLE{Ghosh:2024,
       author = {{Ghosh}, Shamik and {Remazeilles}, Mathieu and {Delabrouille}, Jacques},
        title = "{Planck CO revisited: Improved CO line-emission maps from Planck space-mission observations}",
      journal = {\aap},
     keywords = {ISM: lines and bands, cosmology: observations, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics},
         year = 2024,
        month = aug,
       volume = {688},
          eid = {A54},
        pages = {A54},
          doi = {10.1051/0004-6361/202348932},
archivePrefix = {arXiv},
       eprint = {2312.07816},
 primaryClass = {astro-ph.GA},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2024A&A...688A..54G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

File: PlanckRevisited_CO10_NSIDE1024_lmax2048.fits  
Extension: 1 - Planck Revisited CO10  
NSIDE: 1024  
lmax:  2048  
Columns:  
0 - CO10 map in K_RJ km/s  
1 - CO10 null map in K_RJ km/s  
2 - CO10 systematic uncertainty in K_RJ km/s  
3 - CO10 4sigma-15% confidence mask  

Extension: 2 - Planck Revisited beam  
lmax: 2048  
Column:
0 - Planck Revisited beam transfer function  

---

File: PlanckRevisited_CO21_NSIDE1024_lmax2048.fits  
Extension: 1 - Planck Revisited CO21  
NSIDE: 1024  
lmax:  2048  
Columns:  
0 - CO21 map in K_RJ km/s  
1 - CO21 null map in K_RJ km/s  
2 - CO21 systematic uncertainty in K_RJ km/s  
3 - CO21 4sigma-15% confidence mask

Extension: 2 - Planck Revisited beam  
lmax: 2048  
Column:
0 - Planck Revisited beam transfer function  

---

File: PlanckRevisited_CO32_NSIDE1024_lmax2048.fits  
Extension: 1 - Planck Revisited CO32  
NSIDE: 1024  
lmax:  2048  
Columns:  
0 - CO32 map in K_RJ km/s  
1 - CO32 null map in K_RJ km/s  
2 - CO32 systematic uncertainty in K_RJ km/s  
3 - CO32 4sigma-15% confidence mask  

Extension: 2 - Planck Revisited beam  
lmax: 2048  
Column:
0 - Planck Revisited beam transfer function  

---

File: PlanckRevisited_CO_preprocessing_masks.fits  
Extension: 1 - Preproc masks  
NSIDE: 2048
Columns:  
0 - Bright region mask  
1 - Select point source fill mask  
2 - tSZ source mask  
3 - negative bright source mask  

---

Directory: noise_sims  
This directory houses simulated noise realizations for the Planck Revisited CO data products. The noise simulations are in units of K_RJ km/s. The noise level of the simulations agree to sub-percent level with the Planck Revisited null maps on 98% of the sky. On the brightest 2%, we see 4-12% disagreement. Please refer to Sec A of our accompanying paper for details. 

Contains subdirs:  
    - co10: contains 100 realizations of simulated Planck Revisited CO10 noise.
      Filenames: PlanckRevisited_co10_noise_mc0xy.fits, where xy goes from 00 to 99. Column 0 contains the simulated noise map.  
    - co21: contains 100 realizations of simulated Planck Revisited CO21 noise.  
      Filenames: PlanckRevisited_co21_noise_mc0xy.fits, where xy goes from 00 to 99. Column 0 contains the simulated noise map.  
    - co32: contains 100 realizations of simulated Planck Revisited CO32 noise.  
      Filenames: PlanckRevisited_co32_noise_mc0xy.fits, where xy goes from 00 to 99. Column 0 contains the simulated noise map. (Note: The CO32 noise maps are postprocessed in the way that is identical to the Planck Revisited CO 32 data products.)

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