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Coverage

46,873 of 56,681 columns decided — 82.7% · 9,148 bound (16.1%) · 9,808 still unread

Bound: 9,148; 16.1%; a concept was found and asserted for the column.
Refused: 29,070; 51.3%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 8,655; 15.3%; read, but the evidence did not settle it.
Unanalysed: 9,808; 17.3%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 7:22 PM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 9,808 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

Gaps in the data behind this page

9,808 of the 56,681 columns in the coverage ledger have never been analysed.
603 of the 3,026 datasets in the catalog list no columns at all.

Source last observed Oct 10, 2026, 7:22 PM.

Where each note comes from

9,808 of the 56,681 columns in the coverage ledger have never been analysed.
9,808 / 56,681
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/coverage/unanalysed
603 of the 3,026 datasets in the catalog list no columns at all.
603 / 3,026
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/catalog/datasets_no_inventory

These pages state their own gaps: /datasets, /freshness, /scorecard, /scorecard/fields, /analyses, /ontology, /graph, /alerts, any topic page under /domains.

What we have understood

Freshness above is about the data being current. This is about the data being understood: how many of the catalogue's fields carry a meaning we can act on, which datasets are still waiting, and how far the joinable web reaches.

← Citywide scorecard

Datasets by how much of them we have read

Filtered to datasets carrying zip. Clear

Datasets with the most fields left to read

Showing 1–26 of 26
Dataset	Fields	Decided	Understood	Shared terms
Affordable Housing Production by Building hg8x-zxpr	41	41 100%	14	6	See every field
Mayor’s Office to End Domestic and Gender-Based Violence Resource Directory 5ziv-wcy4	35	35 100%	8	5	See every field
Street Seats (2021 - 2024) 5ar6-qxhs	29	29 100%	17	7	See every field
Local Law 7-2018 Qualified Transactions 8wi4-bsy4	29	29 100%	11	6	See every field
Latin Cultural Organizations 799n-b76v	28	28 100%	10	4	See every field
GreenThumb Garden Info p78i-pat6	27	27 100%	9	4	See every field
Voting/Poll Sites mifw-tguq	25	25 100%	5	3	See every field
Local Law 161 - Use of Force (UoF) Incidents at Benefits Access Centers and SNAP Centers gxfj-gcr2	19	19 100%	14	7	See every field
Number of Participants in NYC Aging funded Programs 2td3-mfek	18	18 100%	13	6	See every field
Transportable Classroom Units- Buildings Only 3spy-rjpw	17	17 100%	9	6	See every field
Recurring Resident Economic Empowerment and Sustainability Programs 7su9-xgtn	17	17 100%	7	4	See every field
Pre-Application Meetings 855v-w7mc	17	17 100%	11	6	See every field
DSNY Special Waste Drop-off Sites 242c-ru4i	16	16 100%	5	3	See every field
Directory of NYCHA Community Facilities crns-fw6u	16	16 100%	11	7	See every field
Medicaid Offices ibs4-k445	16	16 100%	10	6	See every field
Buildings Selected for the Underlying Conditions Program xpbf-ithr	16	16 100%	9	5	See every field
NYC Cooling Tower Registrations y4fw-iqfr	16	16 100%	8	5	See every field
NYCHA Facilities and Service Centers d4iy-9uh7	15	15 100%	7	4	See every field
Directory Of DHS Contacts cete-9g3v	14	14 100%	9	5	See every field
Permitted Nonpotable Wells gnyq-kf2y	14	14 100%	9	5	See every field
NYC Parks Active and Passive Recreation kcqe-vnci	14	14 100%	5	2	See every field
Recognized Shop Healthy Stores ud4g-9x9z	14	14 100%	11	6	See every field
DPR_FunctionalParkland_001 g5fd-8j6i	10	10 100%	1	1	See every field
MOIA In-person Interpretation Service Requests mcti-yg8i	10	10 100%	2	1	See every field
CEQR Project Locations did2-qzw3	8	8 100%	1	1	See every field
Compliance at-the-tap Lead and Copper Data 3wxk-qa8q	7	7 100%	3	2	See every field

The web of datasets and fields

A line means a dataset carries a field tagged with a shared vocabulary term. Two datasets on the same term speak the same language about it, which is what makes a cross-dataset question possible. Sharing a term is not the same as a working join — the dataset page says whether a specific pair compiles.

Bipartite. A dimension node is a conformed-dimension family; a dataset node is a catalog dataset; an edge means that dataset carries at least one column tagged with that dimension, and names the columns that carry it.

No field list yet: We hold no columns for these at all.
Nothing read yet: We hold their columns and have decided none of them.
Under half read: Fewer than half their fields carry a verdict.
Half read: At least half their fields carry a verdict.
Most read: At least three quarters of their fields carry a verdict.
Every field decided: Every field carries a verdict — which does not mean every field is understood.

How many of an edge's tagging columns carry a method that actually read something. Zero means the edge rests entirely on carried lexical tags.

Two datasets on the same dimension node share a vocabulary, which is weaker than a join. GET /api/datasets/{fourFour}/bindings/{partner} decides whether a specific pair compiles; executing it additionally needs both marts present.