Element Description

The Quality metadata element is a free text field which is used to describe the quality of the collection data. 

Best Practices

This field may be used to describe any indications of quality of the data. Examples of appropriate element information include: a) a succinct description of the quality of data in the collection; b) quality assurance procedures followed in producing the data in the collection; c) indicators of collection quality or quality flags - both validated or invalidated; d) recognized or potential problems with quality; e) established quality control mechanisms; and f) established quantitative quality measurements. The Quality element is optional.

Examples:

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory website (https://asterweb.jpl.nasa.gov/swir-alert.asp) for more details."

Quality: "This data has been in extensive use in weather forecasting and atmospheric chemistry research for many years, and has thus been subject to independent review by many scientific experts."


Element Specification

Providing the Quality element is optional (Cardinality: 0..1)

ModelElementTypeConstraintsRequired?Cardinality
UMM-CQualityString

1 - 12000 characters

No0..1

Metadata Validation and QA/QC

All metadata entering the CMR goes through the below process to ensure metadata quality requirements are met. All records undergo CMR validation before entering the system. The process of QA/QC is slightly different for NASA and non-NASA data providers. Non-NASA providers include interagency and international data providers and are referred to as the International Directory Network (IDN).

Please see the expandable sections below for flowchart details.


  • Manual Review
    • Check that the quality description is appropriate for the dataset.
    • Identify errors, discrepancies or omissions.
    • Proof all content for conciseness and readability.
  • Automated Review
    • Check for potential broken links.
    • Check that the field length is not greater than 12,000 characters.

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ARC Priority Matrix

Priority CategorizationJustification

Red = High Priority Finding

This element is categorized as highest priority when:

  • The Quality description contains a spelling or major grammatical error.
  • The Quality element is being used incorrectly (i.e. for a purpose other than describing data quality).
  • A broken URL is provided in the Quality element.

Yellow = Medium Priority Finding

This element is categorized as medium priority when:

  • A recommendation is made to change the syntax or content provided in the Quality element to improve readability.

Blue = Low Priority Finding

This element is categorized as low priority when:

  • A URL provided in the Quality element is a re-direct link (this includes re-directs from "http" to "https").

Green = No Findings/Issues

The element is provided and follows all applicable criteria specified in the best practices section above.

ARC Automated Checks

ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information.  

Dialect Mappings

DIF 9 (Note: DIF-9 is being phased out and will no longer be supported after 2018)

DIF 10

UMM-C ElementDIF 10 PathTypeConstraintsRequired in DIF 10?Cardinality
QualityQuality

String

1 - 12000 characters

No

0..1


Example Mapping

DIF 10

<Quality>Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.</Quality>

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details."

ECHO 10

Quality does not map to ECHO 10.

UMM-C ElementECHO 10 PathTypeConstraintsRequired in ECHO10?CardinalityNotes
QualityN/AN/A

N/A

N/AN/A

Quality does not map to ECHO 10.

ISO 19115-2 MENDS

Providing the Quality element is optional (Cardinality: 0..1)

UMM-C Element

ISO 19115-2 MENDS Path

Type
Quality/gmi:MI_Metadata/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report/gmd:DQ_QuantitativeAttributeAccuracy/gmd:evaluationMethodDescription/gco:CharacterString

String


Example Mapping

ISO 19115-2 MENDS

<gmi:MI_Metadata>
  <gmd:dataQualityInfo>
    <gmd:DQ_DataQuality>
      <gmd:report>
        <gmd:DQ_QuantitativeAttributeAccuracy>
          <gmd:evaluationMethodDescription>
            <gco:CharacterString>Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.
            </gco:CharacterString>
          </gmd:evaluationMethodDescription>
        </gmd:DQ_QuantitativeAttributeAccuracy>
      </gmd:report>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmi:MI_Metadata>

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details."

ISO 19115-2 SMAP

Providing the Quality element is optional. (Cardinality: 0..1)

UMM-C ElementISO 19115-2 SMAP PathType
Quality/gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report/gmd:DQ_QuantitativeAttributeAccuracy/gmd:evaluationMethodDescription/gco:CharacterString

String


Example Mapping

ISO 19115-2 SMAP

<gmd:DS_Series>
<gmd:seriesMetadata>
<gmi:MI_Metadata>
  <gmd:dataQualityInfo>
    <gmd:DQ_DataQuality>
      <gmd:report>
        <gmd:DQ_QuantitativeAttributeAccuracy>
          <gmd:evaluationMethodDescription>
            <gco:CharacterString>Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.
            </gco:CharacterString>
          </gmd:evaluationMethodDescription>
        </gmd:DQ_QuantitativeAttributeAccuracy>
      </gmd:report>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmi:MI_Metadata>
</gmd:DS_Series>
</gmd:seriesMetadata>

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details."

UMM Migration

UMM Version 1.9.0Translation DirectionUMM Version 1.10.0



Future Mappings

ISO 19115-1

Providing the Quality element is optional (Cardinality: 0..1)

UMM-C Element

ISO 19115-1 Path

Type
Quality

/mdb:MD_Metadata/mdb:dataQualityInfo/mdq:DQ_DataQuality/mdq:report/mdq:DQ_DomainConsistency/mdq:result/mdq:DQ_DescriptiveResult/mdq:statement/gco:CharacterString

String


Example Mapping

ISO 19115-1

<mdb:MD_Metadata>
  <mdb:dataQualityInfo>
    <mdq:DQ_DataQuality>
      <mdq:report>
        <mdq:DQ_DomainConsistency>
          <mdq:result>
            <mdq:DQ_DescriptiveResult>
              <mdq:statement>
                <gco:CharacterString>Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.
                </gco:CharacterString>
              </mdq:statement>
            </mdq:DQ_DescriptiveResult>
          </mdq:result>
        </mdq:DQ_DomainConsistency>
      </mdq:report>
    </mdq:DQ_DataQuality>
  </mdb:dataQualityInfo>
</mdb:MD_Metadata>

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details."

Both ISO conventions (19115-1 & 2) have sub-fielded text that more precisely describe the quality assessment of a resource.  Please refer to ISO 19157 (Geographic information – Data quality) for more information about data quality in ISO.

History

UMM Versioning

VersionDateWhat Changed
1.15.512/3/2020No changes were made for Quality during the transition from version 1.15.4 to 1.15.5
1.15.49/18/2020No changes were made for Quality during the transition from version 1.15.3 to 1.15.4
1.15.37/1/2020No changes were made for Quality during the transition from version 1.15.2 to 1.15.3
1.15.25/20/2020No changes were made for Quality during the transition from version 1.15.1 to 1.15.2
1.15.13/25/2020No changes were made for Quality during the transition from version 1.15.0 to 1.15.1
1.15.02/26/2020No changes were made for Quality during the transition from version 1.14.0 to 1.15.0
1.14.010/21/2019No changes were made for Quality during the transition from version 1.13.0 to 1.14.0
1.13.004/11/2019No changes were made for Quality during the transition from version 1.12.0 to 1.13.0
1.12.001/22/2019No changes were made for Quality during the transition from version 1.11.0 to 1.12.0.
1.11.011/28/2018No changes were made for Quality during the transition from version 1.10.0 to 1.11.0.
1.10.005/02/2018

No changes were made for Quality during the transition from version 1.9.0 to 1.10.0.

1.9.0

ARC Documentation

VersionDateWhat ChangedAuthor
1.011/02/2018Recommendations/priority matrix transferred from internal ARC documentation to wiki spaceJeanne' le Roux