Photometric redshift bias correction map product¶
Data Product Name¶
DpdBiasCorrectionMap
Data Product Custodian¶
Name of the Schema File¶
euc-phz-BiasCorrectionMap.xsdData Product Elements¶
- Header:
object of type sys:genericHeader
- Data:
object of type phz:phzBiasCorrectionMap
- QualityFlags:
object of type dqc:sqfPlaceHolder
- Parameters:
object of type ppr:genericKeyValueParameters
Schema documentation tag¶
Documentation for data product element dpdBiasCorrectionMap:
This product contains the bias corrections to be applied to the photometric redshift PDZs. The bias is providen for each SOM cell.
Documentation for data product element Header:
The generic header of the product. .. SchemaDocTagEnd
Detailed Description of the Data Product¶
The bias correction is dependent on the weak lensing weight computation, so this product contains a WeakLensingWeightMethod element which specify the method name and a FITS binary table containing the bias correction to be applied to the PDZs produced by PHZ PF. The product contains also a TileIndexList which keep track of all the tiles to which belong the sources used to compute the bias correction.
Processing Element(s) creating/using the data product¶
This product is one final product of the PHZ bias correction pipeline. It is used to compute the tomographic bin mean photo Z and correct bias in PHZ.
Processing function using the data product¶
PHZ PF output product. To be used by L3
The table is expected to follow the format described by the phz.biasCorrectionMap version 0.9 description, which defines the following columns:
Column name |
Description |
Unit |
|---|---|---|
BIAS_ID |
The bias correction identifier |
NA |
CORRECTION |
The shift to apply to the PDZs of all objects having this bias identifier |
NA |
and has a header keyword: WLMETHOD containing again the name of the weak lensing weight computation method.
The consumers of this product should use the value of the BIAS_ID column of the Photometric Redshift Catalog product to retrieve the correct shift value from this map, to apply the bias correction.