# Difference between revisions of "Specially processed maps"

NOTE: Text in red to be removed when filling the contents

## Product description

A general description of the product, including e.g. figures related to the contents (e.g. maps, tables), and some explanation of its scientific meaning. If there are scientific warnings about the use of the product (User’s caveats), they should also be given here, or at least references to other explanatory documents (papers etc).

## Lensing map

The fiducial Planck lensing potential map is made from a minimum variance combination of the 143 and 217GHz Planck maps on approximately 70% of the sky, using 857GHz as a dust template. This is the same lens reconstruction on which the Planck lensing likelihood is based. It is distributed in FITS format. The headers of this file are copied at the bottom of this page.

We distribute:

PHIBAR
A (transfer-function convolved) map of the lensing potential, in NSIDE 2048 HEALPix RING format. It is obtained by convolving the lensing potential estimate \hat{\phi} with the lensing response function $R_L^{\phi\phi}$. The construction of these quantities are described in detail in Sec. 2.1 of $\fixme{P12_Lensing}$. This map has been band-limited between multipoles $10 \le L \le 2048$. The response function $R_L^{\phi\phi}$ here is analogous to the the beam transfer function in a CMB temperature or polarization map. We have chosen to distribute this transfer-function convolved map rather than the normalized lens reconstruction as it is a significantly more localized function of the CMB temperature map from which it is derived. This is discussed further in Appendix A of P12_Lensing.
This is a NSIDE 2048 HEALPix RING format map, containing the analysis mask used in the lens reconstruction.
RLPP
This column contains the response function $R_L^{\phi\phi}$.
NLPP
This column contains a sky-averaged estimate of the noise power spectrum of PHIBAR. The noise is highly coloured. Note that there is some dependence of the noise power spectrum with the local noise level of the map. Note that the noise power spectrum estimate here is not sufficiently accurate for a power spectrum analysis.

[From Duncan Hanson, Feb.2013]

## Production process

Description of the Pipeline used to generate the product. In particular any limitations and approximations used in the data processing should be listed. Avoiding detailed descriptions of methods and referring to other parts of the ES and/or the relevant Planck papers for the details. References however should be quite detailed (i.e. it is not enough to direct the user to a paper, but the relevant section in the paper should be provided).

## Inputs

A list (and brief description to the extent possible) of the input data used to generate this product (down to file names), as well as any external ancillary data sets which were used.

## Related products

A description of other products that are related and share some commonalities with the product being described here. E.g. if the description is of a generic product (e.g. frequency maps), all the products falling into that type should be listed and referenced.

## Format

A detailed description of the data format of each file, including header keywords for fits files, extension names, column names, formats….

### Numerical Format

The file structure is given below

XTENSION= 'BINTABLE'           /Written by IDL:  Thu Feb  7 11:29:13 2013
BITPIX  =                    8 /
NAXIS   =                    2 /Binary table
NAXIS1  =            251658240 /Number of bytes per row
NAXIS2  =                    1 /Number of rows
PCOUNT  =                    0 /Random parameter count
GCOUNT  =                    1 /Group count
TFIELDS =                    2 /Number of columns
COMMENT
COMMENT  *** End of mandatory fields ***
COMMENT
EXTVER  =                    1 /Extension version
DATE    = '2013-02-07'         /Creation date
COMMENT
COMMENT  *** Column names ***
COMMENT
TTYPE1  = 'WFMAP   '           / W-F Lensing map
COMMENT
COMMENT  *** Column formats ***
COMMENT
TFORM1  = '50331648E'          /
TFORM2  = '50331648B'          /
COMMENT
COMMENT  *** Column units ***
COMMENT
TUNIT1  = 'none    '           /
TUNIT2  = 'none    '           /
EXTNAME = 'LENS-MAP'           / Extension name
COORSYS = 'GALACTIC'           / Coordinate system
ORDERING= 'NESTED  '           / Healpix ordering
NSIDE   =                 2048 / Healpix Nside
FIRSTPIX=                    0 /
LASTPIX =             50331647 /
FILENAME= 'COM_Lensing_R1.00.fits' / FITS filename
CHECKSUM= 'D4iYD4fWD4fWD4fW'   / HDU checksum created 2013-02-07T10:29:14
PROCVER = 'DX9     '           / Product version
COMMENT
COMMENT ------------------------------------------------------------------------
COMMENT Lensing products:
COMMENT - wfmap (Wiener-filtered phi): map of the C_L^{\phi\phi} \bar{\phi}_{LM}
COMMENT ------------------------------------------------------------------------
COMMENT HFI-DMC objects: creation date and group/name
COMMENT M3 dir: /space/dhanson/share/lensrec_v08_pub/
COMMENT     ... dx9nom_143_217_857m_g30_simnfg_simbeam_simlens/wfmap/
COMMENT map:  wfmap.fits
COMMENT ------------------------------------------------------------------------
END

XTENSION= 'BINTABLE'           /Written by IDL:  Thu Feb  7 11:29:17 2013
BITPIX  =                    8 /
NAXIS   =                    2 /Binary table
NAXIS1  =                 8188 /Number of bytes per row
NAXIS2  =                    1 /Number of rows
PCOUNT  =                    0 /Random parameter count
GCOUNT  =                    1 /Group count
TFIELDS =                    1 /Number of columns
COMMENT
COMMENT  *** End of mandatory fields ***
COMMENT
EXTVER  =                    1 /Extension version
DATE    = '2013-02-07'         /Creation date
COMMENT
COMMENT  *** Column names ***
COMMENT
TTYPE1  = 'TLPP    '           / Transfer function
TUNIT1  = 'NONE    '           /
COMMENT
COMMENT  *** Column formats ***
COMMENT
TFORM1  = '2047E   '           /
COMMENT
COMMENT  *** Planck params ***
COMMENT
EXTNAME = 'TransFun'           /Transfer Function
L_MIN   =                    2 /ell min
L_MAX   =                 2048 /ell max
FILENAME= 'COM_Lensing_R1.00.fits' / FITS filename
CHECKSUM= 'aiAgci7ZaiAfai5Z'   / HDU checksum created 2013-02-07T10:29:17
PROCVER = 'DX9     '           / Product version
COMMENT
COMMENT ------------------------------------------------------------------------
COMMENT Lensing products:
COMMENT - TLPP: Transfer function T_l between \phi_{LM} and the map
COMMENT ------------------------------------------------------------------------
COMMENT HFI-DMC objects: creation date and group/name
COMMENT M3 dir: /space/dhanson/share/lensrec_v08_pub/
COMMENT     ... dx9nom_143_217_857m_g30_simnfg_simbeam_simlens/wfmap/
COMMENT tlpp:   tlpp.dat
COMMENT ------------------------------------------------------------------------
END


Flexible Image Transfer Specification

(Hierarchical Equal Area isoLatitude Pixelation of a sphere, <ref name="Template:Gorski2005">HEALPix: A Framework for High-Resolution Discretization and Fast Analysis of Data Distributed on the Sphere, K. M. Górski, E. Hivon, A. J. Banday, B. D. Wandelt, F. K. Hansen, M. Reinecke, M. Bartelmann, ApJ, 622, 759-771, (2005).

Cosmic Microwave background

(Planck) High Frequency Instrument

Data Management Component, the databases used at the HFI and LFI DPCs