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Coverage

20,438 of 56,681 columns decided — 36.1% · 4,487 bound (7.9%) · 36,243 still unread

Bound: 4,487; 7.9%; a concept was found and asserted for the column.
Refused: 10,870; 19.2%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 5,081; 9.0%; read, but the evidence did not settle it.
Unanalysed: 36,243; 63.9%; 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, 10:53 AM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 36,243 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

36,243 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, 10:53 AM.

Where each note comes from

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
36,243 / 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 census_tract. Clear

Datasets with the most fields left to read

Showing 1–40 of 40
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
NYC Building Energy and Water Data Disclosure for Local Law 84 2023 to Present (Data for Calendar Year 2022-Present) 5zyy-y8am	265	57 22%	55	208	4	See every field
2005 Street Tree Census 29bw-z7pj	59	16 27%	4	43	3	See every field
2015 Street Tree Census - Tree Data uvpi-gqnh	45	15 33%	11	30	6	See every field
Advertised Lotteries on Housing Connect By Building nibs-na6y	30	6 20%	6	24	4	See every field
2015 Street Tree Census - Blockface Data ju3b-rwpy	30	8 27%	5	22	4	See every field
Archived DCWP Charges wyj6-frpa	31	10 32%	7	21	4	See every field
layer_1 3as9-uee8	30	9 30%	6	21	5	See every field
TreesCount2015Blockfaces mdmw-kuen	30	9 30%	5	21	4	See every field
LinkNYC Kiosk Status (Historical) quxm-hmyr	35	16 46%	9	19	7	See every field
421-a(16) Affordable New York Housing Program Completion Extension - Letters of Intent pq4c-wbq4	27	8 30%	7	19	2	See every field
LockerNYC Reservations inb9-u6nt	28	10 36%	9	18	5	See every field
485-x Affordable Neighborhoods for New Yorkers: Registrations of Prospective Applicants for Tax Benefits rrtd-iyd7	25	7 28%	7 1 matched by name, unread	18	4	See every field
NYC Citywide Annualized Calendar Sales Update w2pb-icbu	29	12 41%	9	17	6	See every field
Historical License Applications vnz6-h2k4	28	11 39%	7	17	4	See every field
Historical Licenses m4ph-grrm	27	10 37%	6	17	4	See every field
Language Access Secret Shopper (LASS) Ratings 3m3d-zzwn	25	8 32%	2	17	1	See every field
DSNY DonateNYC Directory gkgs-za6m	35	19 54%	7	16	3	See every field
Archived DCWP Inspections kwss-yksz	26	10 38%	8	16	5	See every field
Food Scrap Drop-Off Locations in NYC if26-z6xq	32	17 53%	10	15	7	See every field
Building Elevation and Subgrade (BES) bsin-59hv	30	17 57%	9	13	5	See every field
Safety Events 3vyj-dkjt	23	10 43%	5	13	2	See every field
Pharmaceutical and Syringe Drop-Off Locations in NYC edk2-vkjh	30	18 60%	10	12	6	See every field
Construction-Related Incidents bf97-mjsy	20	9 45%	9 1 matched by name, unread	11	3	See every field
Local Law 161- Agency Calls to NYPD for Assistance at Job and SNAP Centers ejux-uh6h	21	11 52%	11 1 matched by name, unread	10	7	See every field
List of NYC Aging Providers with Sites Open to the Public u7wp-np5k	21	11 52%	10	10	6	See every field
Legal Defense Trust Expenditures mhyv-6iza	20	10 50%	9	10	6	See every field
Electronics Drop Off Locations in NYC wshr-5vic	26	17 65%	11	9	8	See every field
Bronx Borough President Capital Funding mdgu-ar69	20	11 55%	11 1 matched by name, unread	9	7	See every field
DOHMH HIV Service Directory pwts-g83w	20	11 55%	8	9	6	See every field
FloodNet: Sensor Deployment Metadata kb2e-tjy3	20	12 60%	7	8	5	See every field
Number of Participants in NYC Aging funded Programs 2td3-mfek	18	11 61%	10	7	6	See every field
2020 Census Tracts 63ge-mke6	14	7 50%	3	7	2	See every field
2020 Census Tracts to 2020 NTAs and CDTAs Equivalency hm78-6dwm	14	7 50%	4	7	3	See every field
2020 Census Tracts (water areas included) imfq-nf3j	14	7 50%	3	7	2	See every field
Dining Out NYC Locations fpeh-f7ci	23	17 74%	10	6	5	See every field
Local Law 161 Summons Issued by Peace Officers at Benefits Access Centers and SNAP Centers wn4z-dw55	17	11 65%	11 1 matched by name, unread	6	7	See every field
Small Business Services (SBS) Equal Employment Opportunity (EO 50) Certified Businesses 5vi6-xdpy	16	10 63%	9	6	6	See every field
Local Law 161 Arrests by Peace Officers at Benefits Access Centers and SNAP Centers 7wa7-cvt5	16	10 63%	6	6	3	See every field
Local Law 161 Removals by Peace Officers at Benefits Access Centers and SNAP Centers tm9k-c4na	16	11 69%	11 1 matched by name, unread	5	7	See every field
Local Law 161 - Escorts at Benefits Access Centers and SNAP Centers tzsf-n2j8	16	11 69%	11 1 matched by name, unread	5	7	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.