SEL-ID Selected Catalog Product¶
Data Product Name¶
DpdLE3IDSELIDSubsampledCatalog
Data Product Custodian¶
IDSEL
Name of the Schema File¶
euc-le3-id-sel-SubsampledCatalog.xsdLast Edited for DPDD Version¶
1.1
Processing Elements Creating / Updating / Using the Product¶
Creators:
SEL_Select
Consumers:
LE3-GC-2PCF
LE3-GC-PK
LE3-GC-3PCF
LE3-GC-BK
SWG-GC
Processing function using the data product¶
LE3, SGS pipeline output product to be used by SWGs
Proposed for inclusion in EAS/SAS¶
This product is proposed for inclusion in the SAS: yes
The catalog product is needed by the GC-SWG for verification and carrying out alternative science analyses.
Data Product Elements¶
- Header:
object of type sys:genericHeader
- Data:
object of type selid:selIDSubsampledCatalog
- QualityFlags:
object of type selid:selCatalogDqc
- Parameters:
object of type ppr:genericKeyValueParameters
Detailed Description of the Data Product¶
This data product contains the selected Data or Random catalog for the spectroscopic galaxy clustering analyses. It contains a minimal set of columns needed for the clustering analyses, namely the spatial coordinates and a weight.
Note that the Data and Random catalogs share the same data product definition.
This catalog is stored in a FITS file. The second HDU is a binary table extension that contains metadata in the keywords and the catalog in the data table.
Metadata¶
The metadata stored in the Data element of the XML contains useful information about the survey coverage. Here is a brief summary of the metadata:
Data/
Key |
Type |
Description |
|---|---|---|
Area |
float |
Sky area covered by the catalog in deg2 |
Concatenated |
str |
Boolean flag to indicate if tile concatenation was done |
SelectionID |
str |
Selection identifier |
SelectionName |
str |
Selection name |
CalblockIdList |
CalblockIdList |
|
Catalog |
randomCatalogFile |
Pointer to the FITS data file. |
CatalogDescription |
CatalogDescription |
|
IslandLabelList |
IslandLabelList |
|
ObservationIdList |
ObservationIdList |
|
PatchIdList |
PatchIdList |
|
RedshiftHistogram |
RedshiftHistogram |
Histogram of number density along line of sight |
SpatialCoverage |
SpatialCoverage |
|
SpectralCoverage |
SpectralCoverage |
|
TileIndexList |
TileIndexList |
The RedshiftHistogram element contains the number density along the line of sight. It contains the following elements:
Data/RedshiftHistogram/
Key |
Type |
Description |
|---|---|---|
BinCount |
int |
Number of redshift bins |
CosmologyID |
str |
Cosmology identifier |
ComovingDensity |
ListOfDouble |
Comoving number density in units (h/Mpc)3 |
CountdNdz |
ListOfDouble |
Differential number count dN/dz in redshift bins |
RedshiftBinEdges |
ListOfDouble |
Edges of redshift bins |
Keywords Extension Header CATALOG¶
This fits table is expected to contain the following keywords in primary HDU, characterizing the parameters of the product:
XTENSION |
/ |
||
BITPIX |
/ |
||
NAXIS |
/ |
||
NAXIS1 |
/ |
||
NAXIS2 |
/ |
||
PCOUNT |
/ |
||
GCOUNT |
/ |
||
TFIELDS |
/ |
||
EXTNAME |
/ |
||
DATE |
/ |
||
CHECKSUM |
/ |
||
DATASUM |
/ |
||
FILENAME |
/ |
||
TELESCOP |
EUCLID |
/ |
Identifiers Mission identifier |
INSTRUME |
LE3IDSELID |
/ |
PF identifier |
FILENAME |
/ |
Name of fits |
|
CAT_MODE |
/ |
DATA or RANDOM catalog |
|
CAT_NAME |
/ |
ID of Catalog |
|
CAT_NOBJ |
/ |
Object Number of Catalog |
|
COORD |
EQUATORIAL |
/ |
coordinate type EQUATORIAL, CARTESIAN, … |
ANGLE |
DEG |
/ |
angle type RAD or DEG |
COMPLETE |
/ |
completeness of the sample |
|
PURITY |
/ |
purity of the sample |
|
SELID |
/ |
Selection ID |
|
SELNAME |
/ |
Selection name |
|
QUERY |
/ |
Selection query string |
|
MSELID |
/ |
Main selection ID |
|
MSELNAME |
/ |
Main selection name |
|
MQUERY |
/ |
Main selection query string |
|
AREA |
/ |
sky area covered by catalog in square degree |
|
INFO1 |
/ |
Placeholder parameter |
|
INFO2 |
/ |
Placeholder parameter |
|
INFO3 |
/ |
Placeholder parameter |
|
INFO4 |
/ |
Placeholder parameter |
|
END |
|||
Table¶
The table is expected to contain the following columns:
Column name |
Description |
Unit |
|---|---|---|
OBJECT_ID |
Euclid unique source identifier |
NA |
RIGHT_ASCENSION |
Source barycenter RA coordinate (SExtractor ALPHA_J2000) decimal degrees |
deg |
DECLINATION |
Source barycenter DEC coordinate (SExtractor DELTA_J2000) decimal degrees |
deg |
SPE_Z |
The estimated spectroscopic redshift |
NA |
WEIGHT |
Weight generated by SEL |
NA |
Z_TRUE |
True redshift for interlopers generated by VMSP |
NA |
INTERLOPER_TYPE |
Interloper type generated by VMSP |
NA |
FLAG |
Bit flag |
NA |
PARAM1 |
Parameter 1 |
NA |
PARAM2 |
Parameter 2 |
NA |