{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GG7J4ONXTJK4IMDMT6VLECSCMU","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"536b83d5315a065337b3e070707d9441c8356005bff7fd1ddef7a307428b2e9b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-12-05T22:22:25Z","title_canon_sha256":"f1032b5f814675129024b31b9ede9c140c8068f706ee0ca2a9fda880989be94c"},"schema_version":"1.0","source":{"id":"1912.02902","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.02902","created_at":"2026-07-05T00:48:51Z"},{"alias_kind":"arxiv_version","alias_value":"1912.02902v1","created_at":"2026-07-05T00:48:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.02902","created_at":"2026-07-05T00:48:51Z"},{"alias_kind":"pith_short_12","alias_value":"GG7J4ONXTJK4","created_at":"2026-07-05T00:48:51Z"},{"alias_kind":"pith_short_16","alias_value":"GG7J4ONXTJK4IMDM","created_at":"2026-07-05T00:48:51Z"},{"alias_kind":"pith_short_8","alias_value":"GG7J4ONX","created_at":"2026-07-05T00:48:51Z"}],"graph_snapshots":[{"event_id":"sha256:ff4878fd22b4eb3bac1973b2df6e8419dce917b68e0380dbc1804d9b571affb1","target":"graph","created_at":"2026-07-05T00:48:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1912.02902/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Advanced ACTPol is the second generation polarization-sensitive upgrade to the $6\\, \\rm m$ aperture Atacama Cosmology Telescope (ACT), which increased detector count and frequency coverage compared to the previous ACTPol receiver. Advanced ACTPol utilizes a new two-stage time-division multiplexing readout architecture based on superconducting quantum interference devices (SQUIDs) to achieve a multiplexing factor as high as 64 (rows), fielding a 2,012 detector camera at 150/220 GHz and two 90/150 GHz cameras containing 1,716 detectors each. In a time domain system, aliasing introduces noise to ","authors_text":"Carl D. Reintsema, Cody J. Duell, Edward J. Wollack, Gene C. Hilton, James A. Beall, Jason E. Austermann, Jeff Van Lanen, Joel Ullom, Johannes Hubmayr, Maria Salatino, Michael D. Niemack, Michael Vissers, Nick F. Cothard, Patricio A. Gallardo, Shannon M. Duff, Shawn W. Henderson, Shuay-Pwu Patty Ho","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-12-05T22:22:25Z","title":"Characterization of aliased noise in the Advanced ACTPol receiver"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.02902","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b53c61c46aa61195b5a95a8374cfe8fcb6ae2c9fd6a3193b3ab5f8b5465aa932","target":"record","created_at":"2026-07-05T00:48:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"536b83d5315a065337b3e070707d9441c8356005bff7fd1ddef7a307428b2e9b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-12-05T22:22:25Z","title_canon_sha256":"f1032b5f814675129024b31b9ede9c140c8068f706ee0ca2a9fda880989be94c"},"schema_version":"1.0","source":{"id":"1912.02902","kind":"arxiv","version":1}},"canonical_sha256":"31be9e39b79a55c4306c9faab20a42652e44725d79b6d0d7c339c2bddce7b229","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31be9e39b79a55c4306c9faab20a42652e44725d79b6d0d7c339c2bddce7b229","first_computed_at":"2026-07-05T00:48:51.151661Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:48:51.151661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gDz5K230I7DI8GTBRbDe3YtXJrfAvn2LxyXYiMb5wpnS8Uj8+vOxnxMMpBiTxg4a0+vRGvcyJ99hO83rfZl6Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T00:48:51.152171Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.02902","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b53c61c46aa61195b5a95a8374cfe8fcb6ae2c9fd6a3193b3ab5f8b5465aa932","sha256:ff4878fd22b4eb3bac1973b2df6e8419dce917b68e0380dbc1804d9b571affb1"],"state_sha256":"eeb6d7125ef74a045683b13ef1ac7c5b4455158d2a7e424bcd6207c8d6095754"}