About Planck Public Data Release 2

The Planck Public Data Release 2 (PR2) products are based on the complete mission which comprises data acquired between 13 August 2009 and 3 August 2013. Planck is an ESA mission with significant NASA involvement. PR2 is described in the Planck 2015 Release Explanatory Supplement which is available via the ESA Planck Legacy Archive wiki page.

Update December 2016:

In December 2016, the Planck archive had the following updates:

• Added the matrix of LFI NSIDE=256 bandpass leakage-corrected maps
• Added the ERCSC Bandmerge Catalog from X. Chen et al. and the Planck Catalog of High-z Sources from Planck Collaboration 2017.
• Added updated 408 MHz maps, WISE 12 micron and IRIS 100 micron maps to the external data sets page
• Added dust leakage correction maps at the HFI polarization frequencies
• Added theoretical Cls for the best-fit LCDM model plotted in Figs 1 and 3 of Planck 2015 Results XIII.
• Added several foreground mask files used in the data processing
• Added foreground subtracted maps from the SEVEM component separation and foreground maps from all 4 component separation techniques
• Added Cosmic Infrared Background, Galactic dust, and ISW component separated maps
• Added maps of the lensing induced B-modes and Q and U-Stokes parameter maps and associated masks
• Added calibrated data from planet crossings as seen by Planck (pending A&A acceptance)

Update December 15, 2015:

In December 2015, the Planck archive had the following updates:

• Time ordered information from HFI polarization sensitive bolometers are now available both on the visualization tool and for download
• The previously released PCCS2 catalogs have been linked into the visualization tool
• PSZ1 catalog has been updated to v2.1
• The PCCS2 and PSZ1 v2.1 catalogs are available through the Catalog Search interface.
• HIRES, software to improve the spatial resolution of Planck cutouts of individual sources by a factor of ~2, particularly at HFI frequencies, has been released

Update August 18, 2015:

In August 2015, the Planck archive had the following updates:

• LFI R2.01 all-sky maps with updated headers
• HFI R2.02 all-sky maps which now include polarization data
• Corrected R2.02 CMB polarization maps which have been high-pass filtered
• R2.02 of the CMB power spectrum
• R2.00 Time ordered information (TOI) corresponding to HFI spider-web bolometers: this excludes 100 GHz data which was taken only using polarization sensitive bolometers (PSBs)
• R2.10 LFI TOI files had the pointing convention corrected to 0 to 2pi (from -pi to +pi).
• Single frequency source catalogs and associated reliability maps [PCCS2]
• Updated R2.01 LFI bandpass correction maps
• Software to handle Solar System Objects has been updated to work with HFI TOIs
• Cosmological likelihoods code and associated data files
• gNFW fit maps for the BOLOCAM clusters have been corrected - they had an inaccurate rotation of 90 degrees
• DATESOBS files are R2.01 and have updated headers
• Scanning beam files have been renamed to FITS format
• Added previews for the SZ component maps

Update February 23, 2015:

The following were added to the DR2 release:

• All-sky Y_SZ map,
• CMB Power spectrum and
• likelihoods including the BICEP2/Keck/Planck constraints on inflation. Filenames for the other 4 likelihoods were corrected for consistency, their content remains unchanged.

Release Overview:

The NASA Planck Archive, which is served by the InfraRed Science Archive (IRSA) at NASA's Infrared Processing and Analysis Center (IPAC), contains the following PR2 products along with supplemental data and tools:

• Planck All Sky Maps - Temperature, Polarization, and Component Separated Maps

Full channel maps are built using all the valid detectors of a frequency channel and cover the full mission and cover Survey 1-8 for LFI and Survey 1-5 for HFI. Single survey maps are built using all valid detectors of a frequency channel, but cover separately the different sky surveys. Half-ring maps are built using only the first or the second half of the stable pointing period data.

The HEALPix formatted maps are available for download and are used as the basis for cutout images in the catalog visualization service. The map units which are T_CMB for 30-353 GHz and MJy/sr for 545 and 857 GHz. T_CMB units can be converted to MJy/sr (see the PR2 Explanatory Supplement for appropriate conversion factors).

• Source Catalogs

Source catalogs for PR2 are available for download. The downloads are packaged as three gzip'ed tar files, one for the Planck Compact Sources, the others for the Planck catalogs of Sunyaev-Zeldovich Sources and the Planck catalog of Cold Clumps.

• Catalog and Map Visualization

Cutouts created from the PR2 full mission maps are available in the visualization service. At this time the PR2 catalogs are not yet available through the visualization service, the source catalogs from the March 2013 Public Data Release 1 are available instead. The PR2 catalogs will be incorporated into the visualization service at a later date. The maximum recommended size of the cutouts in the visualization service is 2 degrees. Cutouts larger that that will result in photometry that differs by more than 1% compared to photometry on the native HEALPix maps.

Notes on use of the catalogs and cutouts:

Users must take into account the spatial resolution of Planck. The default Catalog Search resolution of 10 arcsec is too small for instruments with 5-33 arcmin resolution.

Planck observations cover the whole sky, so all-sky catalogs are available for each of the 9 frequency bands (30 - 857 GHz) covered by Planck. These have not been merged into a single multi-wavelength catalog. If you are interested in individual sources, you can search for that source in all of the Planck ER or PR1 catalogs at once. WMAP and IRAS images are also provided for individual sources.

PR2 includes for download the entire compact source catalogs for each band, the four catalogs derived from multi-frequency SZ cluster detection algorithms (SZ MMF1, SZ MMF3, SZ PwS), and a union catalog (SZ Union) combining the results from all three, and an updated Cold Cores catalog.

• Time Ordered Information Search and Visualization

Access to calibrated Planck Time Ordered Information (TOI) data is a new feature of PR2. These data consist of the individual detector readings acquired as the spacecraft spun at 1 rpm. Each reading is tagged by the observed location on the sky, the date and time the sample was acquired, the measured intensity, and whether or not Planck was pointed towards a major Solar System object (the planets are bright). TOIs can be selected by region on the sky, specific detectors, and by date range. The search results can be downloaded as a FITS binary table for further use and also used to produce images using the Minimap algorithm.

• Planck Ancillary Data - Cosmological Parameters, Noise Covariance Matrices, Correction Maps, Masks, Pointing and Instrument Parameters

The additional mission-related data sets available are 1) cosmological parameters and noise covariance matrices, 2) complete listings of all LFI and HFI products and the instrumentation information, 3) correction maps for both LFI and HFI frequencies, 4) foreground source masks for LFI and HFI, 5) scanning beams for LFI and HFI, and 6) HEALPix maps containing the number of observation dates and the specific dates across the sky.

• External Datasets - Bolocam Observations of Planck SZ clusters

As part of this release, we are making available the Caltech Submillimeter Observatory corresponding to 47 galaxy clusters which have been observed by Bolocam at 2.1 mm (J. Sayers et al. 2013, ApJ, 768, 177). The files available for each cluster correspond to the unfiltered Sunyaev-Zeldovich decrement (SZ) image, the filtered SZ image and the best-fit gNFW profile. In addition, measurements of the noise in the data, the signal transfer function and the Monte-Carlo Markov Chain output from the fits are available in the tarball that can be downloaded for each cluster. If using these data please reference J. Sayers et al. 2013, ApJ, 768, 177.

• Software - Useful software for analysis of Planck data

The NASA Planck Archive also provides software tools and data sets that will facilitate use of the Planck Public Data Release 2 products.

We provide updated versions of the Planck effective beams for all frequencies and across the entire sky based on the complete mission data. These are designed to be used with the EffConv software provided in Public Data Release 1.

Additionally, three user contributed software packages are included. These support creation of images from FITS binary table formatted downloaded TOIs, handling of Planck TOIs for Solar System Objects based on JPL/Horizons ephemeris data, and extraction of the effective beams at user-defined coordinates.

Planck Survey Dates

The dates of the Planck Survey Boundaries are: