# GMTSAR Raw Aligned Stage-2 Contract Run

- Scene: `kilauea_year_e2e_pack_fast_stage2_20260428`
- Mode: `gmtsar_raw_aligned_stage2_contract`
- Shape: `[13520, 24516]`
- Stage-2 align engine: `safe_tops_mlx_v2`
- Stage-2 artifact mode: `symlink`
- Reference raw SLC SHA256: `6276a7edb1b9b9bc96258ba00866f52ee6b6805463df7ea131ae8b445975dea8`
- Aligned secondary raw SLC SHA256: `568ed7c91189e11b8eb6cd3c689ade5c33b5441b397a97f25ea14774e2fba8f4`

## GMTSAR Stage 2 Source

- Align engine: `python_reference`
- Aligned writer engine: `python_shifted`
- Duration: `138.091329` seconds
- Offset fit: `scipy_multiscale_residual`
- Offset rows: `134318`

## Experimental MLX Stage 2

- Explicit secondary SLC: `/Users/aschmidt/Codex/dem/output/kilauea_year_e2e_pack_fast_stage2_20260428/stage2_safe/S1_20260225_043040_F2.SLC`
- Amplitude tile estimation: `skipped`
- Valid tiles: `0/0`
- Center offset y/x: `10.3166`, `-10.6254`
- Writer backend: `mlx`
- Writer seconds: `11.5041`
- Total seconds: `17.5312`

## SAFE/TOPS Stage 2 Source Materialization

- Master XML: `/Users/aschmidt/Codex/gmtsar/output/kilauea_gmtsar/2025-03-02_2026-02-25_s1a_track124/raw/S1A_IW_SLC__1SDV_20250302T043050_20250302T043120_058121_072DA7_0872.SAFE/annotation/s1a-iw2-slc-vv-20250302t043051-20250302t043119-058121-072da7-005.xml`
- Master TIFF: `/Users/aschmidt/Codex/gmtsar/output/kilauea_gmtsar/2025-03-02_2026-02-25_s1a_track124/raw/S1A_IW_SLC__1SDV_20250302T043050_20250302T043120_058121_072DA7_0872.SAFE/measurement/s1a-iw2-slc-vv-20250302t043051-20250302t043119-058121-072da7-005.tiff`
- Secondary XML: `/Users/aschmidt/Codex/gmtsar/output/kilauea_gmtsar/2025-03-02_2026-02-25_s1a_track124/raw/S1A_IW_SLC__1SDV_20260225T043039_20260225T043109_063371_07F5A3_F355.SAFE/annotation/s1a-iw2-slc-vv-20260225t043040-20260225t043108-063371-07f5a3-005.xml`
- Secondary TIFF: `/Users/aschmidt/Codex/gmtsar/output/kilauea_gmtsar/2025-03-02_2026-02-25_s1a_track124/raw/S1A_IW_SLC__1SDV_20260225T043039_20260225T043109_063371_07F5A3_F355.SAFE/measurement/s1a-iw2-slc-vv-20260225t043040-20260225t043108-063371-07f5a3-005.tiff`
- Master rows written: `13524`
- Secondary rows written: `0`
- Total seconds: `2.84639`

## Global Diagnostic

- Sample stride: `[13, 13]`
- Sample shape: `[1040, 1886]`
- Offset y/x: `0.00645793`, `-0.0624176`
- Peak ratio: `20.3151`

## Stage 4 Like Products

- Shape: `[3496, 2216]`
- Total seconds: `10.8263`
- Oracle parity passed: `False`
- Phase mean abs error: `0.006313641555607319`
- Phase max abs error: `3.118969440460205`

## Native Geocoded Products

- Shape: `1760 x 1340`
- Total seconds: `4.00488`
- Phase mean abs error: `0.0063383569940924644`
- Phase max abs error: `3.1301016807556152`
- Maps page: `/Users/aschmidt/Codex/dem/output/kilauea_year_e2e_pack_fast_stage2_20260428/pages/maps.html`