Difference between revisions of "Specially processed maps"

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<span style="color:Red">NOTE: Text in red to be removed when filling the contents</span>
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==Overview==
==Product description==
+
 
 
<span style="color:Red">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).</span>
 
<span style="color:Red">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).</span>
  
  
=== Lensing map ===
+
== Lensing map ==
  
 +
=== Description ===
  
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.
+
The fiducial Planck lensing potential map is made from a minimum variance combination of the 143 and 217 GHz 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.  
  
 
We distribute:
 
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.  
+
; 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 <span style="color:red">P12_Lensing</span>. 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.  
; MASK : This is a NSIDE 2048 HEALPix RING format map, containing the analysis mask used in the lens reconstruction.
+
; MASK : This is a NSIDE 2048 HEALPix map, containing the analysis mask used in the lens reconstruction.
 
; RLPP : This column contains the response function $R_L^{\phi\phi}$.
 
; 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.
 
; 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.
Line 18: Line 19:
 
''[From Duncan Hanson, Feb.2013]''
 
''[From Duncan Hanson, Feb.2013]''
  
==Production process==
+
=== Production process ===
 
<span style="color:Red">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).</span>
 
<span style="color:Red">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).</span>
  
==Inputs==
+
===Inputs===
 
<span style="color:Red">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.</span>
 
<span style="color:Red">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.</span>
==Related products==
+
 
 +
===Related products===
 +
 
 
<span style="color:Red">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.</span>
 
<span style="color:Red">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.</span>
==Format==
 
<span style="color:Red">A detailed description of the data format of each file, including header keywords for fits files, extension names, column names, formats….</span>
 
===File names===
 
===Extensions===
 
  
===Keywords===
+
===File names and format===
 +
 
 +
A single file named ''COM_CompMap_Lensing_2048_R1.10.fits'' with two BINTABLE extensions containing the items described above. 
 +
 
 +
{| border="1" cellpadding="3" cellspacing="0" align="center" style="text-align:left"
 +
! Column Name || Data Type || Units || Description
 +
|-
 +
!colspan="4"| 1. EXTNAME = 'LENS-MAP'
 +
|-
 +
|PHIBAR || Real*4 || none || Map of the lensing potential
 +
|-
 +
|MASK || Int || none || Region over which the lensing potential is reconstructed
 +
|-
 +
!colspan="4"| 2. EXTNAME = 'TransFun'
 +
|-
 +
|RLPP || Real*4 || none || Response function (see above)
 +
|-
 +
|NLPP || Real*4 || none || sky-averaged noise spectrum
 +
|}
 +
 
 +
The maps in Ext 1 are, as usual, in GALACTIC coordinates, Nside=2048 and in NESTED ordering.  The vectors in Ext 2 run from $l_{min} = 0$ to $l_{max} =2028$.
 +
 
 +
 
  
  
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                               
 
TTYPE3  = 'Mask    '          / Mask                                         
 
TTYPE2  = 'MASK    '          /                                               
 
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     
 
BAD_DATA=        -1.63750E+30 / bad pixel value                               
 
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 - mask: map of the reconstruction mask                                 
 
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 mask: mask.fits.gz                                                     
 
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
 
  
  
===Numerical Format===
 
  
 
[[Category:Mission science products|010]]
 
[[Category:Mission science products|010]]

Revision as of 10:02, 5 March 2013

Overview

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

Description

The fiducial Planck lensing potential map is made from a minimum variance combination of the 143 and 217 GHz 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.

We distribute:

PHIBAR 
A (transfer-function convolved) map of the lensing potential, in NSIDE 2048 HEALPix([http://healpix.sourceforge.net Hierarchical Equal Area isoLatitude Pixelation of a sphere], {{BibCite|gorski2005}}) pixelation used to produce Planck sky maps (and HFI HPR). 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 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 CMBCosmic Microwave background 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 CMBCosmic Microwave background temperature map from which it is derived. This is discussed further in Appendix A of P12_Lensing.
MASK 
This is a NSIDE 2048 HEALPix([http://healpix.sourceforge.net Hierarchical Equal Area isoLatitude Pixelation of a sphere], {{BibCite|gorski2005}}) pixelation used to produce Planck sky maps (and HFI HPR). 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.

File names and format

A single file named COM_CompMap_Lensing_2048_R1.10.fits with two BINTABLE extensions containing the items described above.

Column Name Data Type Units Description
1. EXTNAME = 'LENS-MAP'
PHIBAR Real*4 none Map of the lensing potential
MASK Int none Region over which the lensing potential is reconstructed
2. EXTNAME = 'TransFun'
RLPP Real*4 none Response function (see above)
NLPP Real*4 none sky-averaged noise spectrum

The maps in Ext 1 are, as usual, in GALACTIC coordinates, Nside=2048 and in NESTED ordering. The vectors in Ext 2 run from $l_{min} = 0$ to $l_{max} =2028$.