LL Mask Overlays

Median Combination of 77 LL BCD's (bcd_fp)

An overlay of the PMASK and BMASK data on a SINGS LL image. This image was constructed by median-combining 77 steps in a 7x11 LL spectral map, and thus the hot pixels seen on-order are real, and persist from frame to frame. Residual LL1 banding from the filter delamination pattern can be seen.

Legend:

• Red x's: PMASK entries, aside from 64 (the rogue pixel bit)
• Green x's: PMASK `64' entries: aka rogue pixels.
• Blue diamonds: BMASK entries

Most hot pixels on order are not included in either MASK.

Total of all 16 planes of LL dark

The same overlay this time on the totaled (all 16 planes) of the DARK.

The hot pixels seen in the median-combined image above are not contained in the dark.

On-order bad pixels identified by eye

The following shows bad pixels I selected as bad in the median-combined image:

I did not mark LL1 past the calibration cutoff at 37um. The pixels listed are (0,0 offset):

        9761        8866        9266        8366        7849        7459
        6952        6570        6313        6057        5666        5930
        6446        5941        5814        7347        7733        7094
        8118        8631       11425       12065       12327       11827
       13622       14115       15267       15397        5157        5294
        4764        4763        4762        4635        4641        4773
        4646        4651        4524        4525        4398        4269
        4389        4128        4000        3871        3744        3745
        3746        3628        3885        3632        3636        3892
        3775        4034        6082        6337        6981        6984
        6600        6087        6093        5710        4814        4314
        3656        2636        1742        1227         848         717
         456        1239        1500        6360        7135        8799
        9803        9796       10050       10078        2366         197
         198         200         201         199         196         195
         194         193         192         191          63          65
          66          64          67          68          70          71
          72          73          69        1750        3543        4826
        5325        5584        4680        6615        6109        6751
        8282        8782        8778         338         337          74
          76          75          78          77          79          80
          81          82          83          84          85          86
          87          88          89          90          92          91
          93          94          95        9259       11687       13596
       13605        6689        5792        5920        7066        3623
        3621        4134        4258        4761        3616        3487
       11930