First version of list_obs

[DougBurke]

Issues

• no parameter file (although it's simple enough to get away with it)
• the screen output is tecnically a little confusing as it assumes
  that reproject_obs-like functionality is about to happen.

Examples

% list_obs 5826/,5827/
Running list_obs
Version: 10 December 2021

Found 5826/primary/acisf05826N004_evt2.fits.gz
Found 5827/primary/acisf05827N004_evt2.fits.gz
Verifying 2 observations.
Calculating new tangent point.
New tangent point: RA=12h 30m 48.495s Dec=12d 23' 39.92"

Observations to be reprojected:

  Obsid  Obs Date   Exp    DETNAM     SIM_Z    FP   Sepn   PA
                   (ks)                (mm)    (K)   (')  (deg)
---------------------------------------------------------------
1 5826  2005-03-03 126.8 ACIS-0123   -231.596 154.1   0.6   +36
2 5827  2005-05-05 156.2 ACIS-0123   -231.596 153.6   0.6  -144

% scripts/list_obs robs/
Running list_obs
Version: 10 December 2021

Found robs/24300_reproj_evt.fits
Found robs/evt.lis
Found robs/23839_reproj_evt.fits
Found robs/26134_reproj_evt.fits
Found robs/24301_reproj_evt.fits
Found robs/merged_evt.fits
Found robs/24303_reproj_evt.fits
Found robs/24302_reproj_evt.fits
Verifying 8 observations.
Skipping file: File robs/evt.lis is missing the INSTRUME keyword!
Skipping file: The OBS_ID value is 'Merged' in robs/merged_evt.fits.
Skipped 2 observations.

Calculating new tangent point.
New tangent point: RA=0h 25m 48.836s Dec=-26d 2' 18.51"

Observations to be reprojected:

  Obsid  Obs Date   Exp    DETNAM     SIM_Z    FP   Sepn   PA
                   (ks)                (mm)    (K)   (')  (deg)
---------------------------------------------------------------
1 24302 2021-09-13  27.5 ACIS-7      -190.143 154.3  < 3"   -90
2 24301 2021-09-19  17.7 ACIS-7      -190.143 160.2  < 3"   -90
3 23839 2021-09-20  24.5 ACIS-367    -190.140 155.7  < 3"   -90
4 26134 2021-09-21  28.8 ACIS-367    -190.140 156.0  < 3"   -90
5 24300 2021-09-23  32.6 ACIS-7      -190.140 155.5  < 3"   -90
6 24303 2021-09-24  29.0 ACIS-367    -190.140 155.5  < 3"   -90

WARNING - EXPTIME values differ:
  Obsids 24302 24301 24300 have EXPTIME=3.0 and the rest have 3.1