{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7PMCCVFFEVPXQ4LHHFFR6NEDLE","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":"05eb2e5bee53bc192ca1adf063cd90be523cb7b9eae4f56f553b529f551c5a0f","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-05-27T20:02:31Z","title_canon_sha256":"6ce5c6e7411975b8f7d2f5a1d66d8411171f1352633c008b7587d7791f81a36d"},"schema_version":"1.0","source":{"id":"1505.07474","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07474","created_at":"2026-05-18T01:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07474v2","created_at":"2026-05-18T01:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07474","created_at":"2026-05-18T01:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"7PMCCVFFEVPX","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7PMCCVFFEVPXQ4LH","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7PMCCVFF","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:1051924bfe6d0207e4e0ea089bb04ca26e013bfb0f119762fae9d83f27b409f1","target":"graph","created_at":"2026-05-18T01:22:21Z","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"},"paper":{"abstract_excerpt":"The Encircled Energy Fraction and its quantiles, notably the Half Energy Width, are routinely used to characterize the quality of X-ray optical systems. They are however always quoted without a statistical error. We show how non-parametric statistical methods can be used to redress this situation, and we discuss how the knowledge of the statistical error can be used to speed up the characterization efforts for future X-ray observatories.","authors_text":"Giuseppe Vacanti","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-05-27T20:02:31Z","title":"Confidence intervals for the encircled energy fraction and the half energy width"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07474","kind":"arxiv","version":2},"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:c0dbaaa82061f5d321ec94b4e83e1d7b1d4a926b2d0496eb99f42aae293aa9dc","target":"record","created_at":"2026-05-18T01:22:21Z","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":"05eb2e5bee53bc192ca1adf063cd90be523cb7b9eae4f56f553b529f551c5a0f","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-05-27T20:02:31Z","title_canon_sha256":"6ce5c6e7411975b8f7d2f5a1d66d8411171f1352633c008b7587d7791f81a36d"},"schema_version":"1.0","source":{"id":"1505.07474","kind":"arxiv","version":2}},"canonical_sha256":"fbd82154a5255f787167394b1f3483593f4a4aa0a627208c4578f336be822c3a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fbd82154a5255f787167394b1f3483593f4a4aa0a627208c4578f336be822c3a","first_computed_at":"2026-05-18T01:22:21.125336Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:21.125336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SFj3lPyXFWTiokSxXDKf/7wAC7dUZirpqkVdznRZzNDGLSEKBOg+d9govgHEb0B883xoDpvhwmlweomPpx0wAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:21.126142Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.07474","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0dbaaa82061f5d321ec94b4e83e1d7b1d4a926b2d0496eb99f42aae293aa9dc","sha256:1051924bfe6d0207e4e0ea089bb04ca26e013bfb0f119762fae9d83f27b409f1"],"state_sha256":"731aaf460b320c552fca79795a0aa777c70d4cd5fb5cdd8e11c4d06edeca2d91"}