{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:SDBHRZLSZ66YYDEXG22MYPIAR4","short_pith_number":"pith:SDBHRZLS","canonical_record":{"source":{"id":"2311.00813","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-11-01T19:54:09Z","cross_cats_sorted":[],"title_canon_sha256":"8a16adbe105ea1c847bd2dd2ef90f9d2042d2167ca412a9eeaeeb6bca3da98af","abstract_canon_sha256":"dc81d680dbbf9b39b3ce4bdfd0297bb438aa8465507f47b4ef9fc2f73e04ff0a"},"schema_version":"1.0"},"canonical_sha256":"90c278e572cfbd8c0c9736b4cc3d008f0192e99dd94d3b9240d6f1f1d7d0ea13","source":{"kind":"arxiv","id":"2311.00813","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.00813","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"arxiv_version","alias_value":"2311.00813v1","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.00813","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"pith_short_12","alias_value":"SDBHRZLSZ66Y","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"pith_short_16","alias_value":"SDBHRZLSZ66YYDEX","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"pith_short_8","alias_value":"SDBHRZLS","created_at":"2026-07-05T07:08:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:SDBHRZLSZ66YYDEXG22MYPIAR4","target":"record","payload":{"canonical_record":{"source":{"id":"2311.00813","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-11-01T19:54:09Z","cross_cats_sorted":[],"title_canon_sha256":"8a16adbe105ea1c847bd2dd2ef90f9d2042d2167ca412a9eeaeeb6bca3da98af","abstract_canon_sha256":"dc81d680dbbf9b39b3ce4bdfd0297bb438aa8465507f47b4ef9fc2f73e04ff0a"},"schema_version":"1.0"},"canonical_sha256":"90c278e572cfbd8c0c9736b4cc3d008f0192e99dd94d3b9240d6f1f1d7d0ea13","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:08:15.972410Z","signature_b64":"was0K7ClKRv2bjCSH/ldJfcUOA7ib/jhrhKSvn/0XCB+lB5+dyrmC7JND9jwcTqZgS7yZ1bGDTHBQIwDZ7QgBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90c278e572cfbd8c0c9736b4cc3d008f0192e99dd94d3b9240d6f1f1d7d0ea13","last_reissued_at":"2026-07-05T07:08:15.972019Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:08:15.972019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2311.00813","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:08:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j1YTfDuZ+H/3GlulP+hIAa4cuopLpbKkePPfFqD9vf1ji6Gkj27ZTdJA12mszCAAN5oW4I75oxdgrZcAueDcBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:12:19.306884Z"},"content_sha256":"78f971f273557cf234813211cca13a1e6169476f51d8dfdcc0c3ebb7786807ad","schema_version":"1.0","event_id":"sha256:78f971f273557cf234813211cca13a1e6169476f51d8dfdcc0c3ebb7786807ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:SDBHRZLSZ66YYDEXG22MYPIAR4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterization and Optimization of Skipper CCDs for the SOAR Integral Field Spectrograph","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Abhishek Bakshi, Alex Drlica-Wagner, Andr\\'es A. Plazas Malag\\'on, Braulio Cancino, Claudio R. Chavez, Edgar Marrufo Villalpando, Guillermo Fernandez Moroni, Javier Tiffenberg, Juan Estrada, Julia Campa, Luciano Fraga, Manuel E. Gaido, Marco Bonati, Michelle Jonas, Peter Moore, Rachel Hur, Stephen Holland","submitted_at":"2023-11-01T19:54:09Z","abstract_excerpt":"We present results from the characterization and optimization of six Skipper CCDs for use in a prototype focal plane for the SOAR Integral Field Spectrograph (SIFS). We tested eight Skipper CCDs and selected six for SIFS based on performance results. The Skipper CCDs are 6k $\\times$ 1k, 15 $\\mu$m pixels, thick, fully-depleted, $p$-channel devices that have been thinned to $\\sim 250 \\mu$m, backside processed, and treated with an antireflective coating. We optimize readout time to achieve $<4.3$ e$^-$ rms/pixel in a single non-destructive readout and $0.5$ e$^-$ rms/pixel in $5 \\%$ of the detect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.00813","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2311.00813/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:08:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nLmPb49efbZxzQniexhsdK9LQtn8GOLDBzjdKJdMU4xBT4Vl3VY8ObEfGjhYJxzlkKcVNXPmvkyOyx5CS5aqAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:12:19.307405Z"},"content_sha256":"d62cbffc327dadf9c18d78b6552f1fbae62352c9ad5da1bf0730ad3a4624002e","schema_version":"1.0","event_id":"sha256:d62cbffc327dadf9c18d78b6552f1fbae62352c9ad5da1bf0730ad3a4624002e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SDBHRZLSZ66YYDEXG22MYPIAR4/bundle.json","state_url":"https://pith.science/pith/SDBHRZLSZ66YYDEXG22MYPIAR4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SDBHRZLSZ66YYDEXG22MYPIAR4/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-19T23:12:19Z","links":{"resolver":"https://pith.science/pith/SDBHRZLSZ66YYDEXG22MYPIAR4","bundle":"https://pith.science/pith/SDBHRZLSZ66YYDEXG22MYPIAR4/bundle.json","state":"https://pith.science/pith/SDBHRZLSZ66YYDEXG22MYPIAR4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SDBHRZLSZ66YYDEXG22MYPIAR4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SDBHRZLSZ66YYDEXG22MYPIAR4","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":"dc81d680dbbf9b39b3ce4bdfd0297bb438aa8465507f47b4ef9fc2f73e04ff0a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-11-01T19:54:09Z","title_canon_sha256":"8a16adbe105ea1c847bd2dd2ef90f9d2042d2167ca412a9eeaeeb6bca3da98af"},"schema_version":"1.0","source":{"id":"2311.00813","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.00813","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"arxiv_version","alias_value":"2311.00813v1","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.00813","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"pith_short_12","alias_value":"SDBHRZLSZ66Y","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"pith_short_16","alias_value":"SDBHRZLSZ66YYDEX","created_at":"2026-07-05T07:08:15Z"},{"alias_kind":"pith_short_8","alias_value":"SDBHRZLS","created_at":"2026-07-05T07:08:15Z"}],"graph_snapshots":[{"event_id":"sha256:d62cbffc327dadf9c18d78b6552f1fbae62352c9ad5da1bf0730ad3a4624002e","target":"graph","created_at":"2026-07-05T07:08:15Z","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/2311.00813/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results from the characterization and optimization of six Skipper CCDs for use in a prototype focal plane for the SOAR Integral Field Spectrograph (SIFS). We tested eight Skipper CCDs and selected six for SIFS based on performance results. The Skipper CCDs are 6k $\\times$ 1k, 15 $\\mu$m pixels, thick, fully-depleted, $p$-channel devices that have been thinned to $\\sim 250 \\mu$m, backside processed, and treated with an antireflective coating. We optimize readout time to achieve $<4.3$ e$^-$ rms/pixel in a single non-destructive readout and $0.5$ e$^-$ rms/pixel in $5 \\%$ of the detect","authors_text":"Abhishek Bakshi, Alex Drlica-Wagner, Andr\\'es A. Plazas Malag\\'on, Braulio Cancino, Claudio R. Chavez, Edgar Marrufo Villalpando, Guillermo Fernandez Moroni, Javier Tiffenberg, Juan Estrada, Julia Campa, Luciano Fraga, Manuel E. Gaido, Marco Bonati, Michelle Jonas, Peter Moore, Rachel Hur, Stephen Holland","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-11-01T19:54:09Z","title":"Characterization and Optimization of Skipper CCDs for the SOAR Integral Field Spectrograph"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.00813","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":"sha256:78f971f273557cf234813211cca13a1e6169476f51d8dfdcc0c3ebb7786807ad","target":"record","created_at":"2026-07-05T07:08:15Z","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":"dc81d680dbbf9b39b3ce4bdfd0297bb438aa8465507f47b4ef9fc2f73e04ff0a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-11-01T19:54:09Z","title_canon_sha256":"8a16adbe105ea1c847bd2dd2ef90f9d2042d2167ca412a9eeaeeb6bca3da98af"},"schema_version":"1.0","source":{"id":"2311.00813","kind":"arxiv","version":1}},"canonical_sha256":"90c278e572cfbd8c0c9736b4cc3d008f0192e99dd94d3b9240d6f1f1d7d0ea13","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90c278e572cfbd8c0c9736b4cc3d008f0192e99dd94d3b9240d6f1f1d7d0ea13","first_computed_at":"2026-07-05T07:08:15.972019Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:08:15.972019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"was0K7ClKRv2bjCSH/ldJfcUOA7ib/jhrhKSvn/0XCB+lB5+dyrmC7JND9jwcTqZgS7yZ1bGDTHBQIwDZ7QgBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:08:15.972410Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.00813","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78f971f273557cf234813211cca13a1e6169476f51d8dfdcc0c3ebb7786807ad","sha256:d62cbffc327dadf9c18d78b6552f1fbae62352c9ad5da1bf0730ad3a4624002e"],"state_sha256":"b709e67027187c83440781500e16a6b5a8f696c3afad7524935cbc6166b411eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4+rA6yhPA4Ei/Ab0tfveDNDEc+FWXFL5wWagI81v9F8o20bfszenJlxHcsgvp581ppzuGJyAPj86Kc81sbUrAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T23:12:19.313021Z","bundle_sha256":"2b547d3a95c1e6990cb5b81d3d68e43867f5abb1f010ee1de45fc52126f814b5"}}