Yd/add plot

[YicunDuanUMich]

• refactor notebooks
• add new metrics
• add flux error plot

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.18519% with 4 lines in your changes missing coverage. Please review.

Project coverage is 91.41%. Comparing base (edbe0ea) to head (f130668).

Files	Patch %	Lines
bliss/catalog.py	71.42%	2 Missing :warning:
bliss/surveys/dc2.py	88.23%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1020 +/- ## ========================================== - Coverage 91.44% 91.41% -0.04% ========================================== Files 23 23 Lines 3133 3144 +11 ========================================== + Hits 2865 2874 +9 - Misses 268 270 +2 ``` | [Flag](https://app.codecov.io/gh/prob-ml/bliss/pull/1020/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=prob-ml) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/prob-ml/bliss/pull/1020/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=prob-ml) | `91.41% <85.18%> (-0.04%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=prob-ml#carryforward-flags-in-the-pull-request-comment) to find out more.

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