[Bug Fix] Addresses Issue #229

[bdorney]

Description

Address Issue #229 using the method provided by @lpetre-ulb.

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Motivation and Context

See #229.

How Has This Been Tested?

I've tested this in the discussion on issue #229. And also again for one detector on the QC8 stand:

% getCalInfoFromDB.py 1 4 4
...
...
<class 'pandas.core.frame.DataFrame'>
Int64Index: 24 entries, 0 to 23
Data columns (total 10 columns):
vfatN            24 non-null int64
vfat3_ser_num    24 non-null object
vfat3_barcode    24 non-null object
iref             24 non-null int64
adc0m            24 non-null float64
adc1m            24 non-null float64
adc0b            24 non-null float64
adc1b            24 non-null float64
cal_dacm         24 non-null float64
cal_dacb         24 non-null float64
dtypes: float64(6), int64(2), object(2)
memory usage: 2.1+ KB
    vfatN vfat3_ser_num vfat3_barcode  iref    adc0m    adc1m    adc0b  \
0       0        0x191b          6427    31  1.92493  2.23859 -329.140
1       1        0x1939          6457    31  1.98065  2.24550 -342.038
2       2        0x1943          6467    28  1.92460  2.25281 -319.088
3       3        0x1956          6486    30  1.86553  2.25038 -308.145
4       4        0x1957          6487    29  1.84510  2.24744 -308.706
5       5        0x195a          6490    28  1.93590  2.23457 -322.136
6       6        0x1955          6485    38  1.86152  2.23339 -306.951
7       7        0x18b8          6328    33  1.90315  2.24688 -315.650
8       8        0x190e          6414    31  1.89792  2.26111 -317.626
9       9        0x1978          6520    34  1.88107  2.25189 -315.447
10     10        0x1940          6464    31  1.89072  2.28090 -317.349
11     11        0x194f          6479    36  1.87751  2.27679 -318.173
12     12        0x1958          6488    35  1.92573  2.25850 -318.912
13     13        0x193e          6462    35  1.85784  2.26923 -313.567
14     14        0x192f          6447    34  1.90715  2.25418 -310.419
15     15        0x190a          6410    33  1.92279  2.25316 -333.126
16     16        0x1927          6439    31  1.93912  2.23881 -327.836
17     17        0x1917          6423    35  1.92429  2.27084 -310.123
18     18        0x193f          6463    36  1.90557  2.28043 -306.193
19     19        0x194e          6478    33  1.90205  2.23640 -309.560
20     20        0x1974          6516    30  1.98247  2.25069 -331.131
21     21        0x1944          6468    34  1.89388  2.23282 -315.519
22     22        0x1938          6456    33  1.88957  2.27799 -306.611
23     23        0x1920          6432    35  1.92471  2.26636 -318.315

      adc1b  cal_dacm  cal_dacb
0  -487.162 -0.228743   56.4847
1  -472.364 -0.266546   66.2623
2  -489.879 -0.225235   55.7650
3  -489.510 -0.248689   61.2316
4  -513.931 -0.267046   66.4012
5  -484.000 -0.295372   72.9856
6  -500.378 -0.239769   58.9339
7  -503.828 -0.267739   66.1570
8  -507.285 -0.261367   64.4386
9  -498.244 -0.275515   67.9316
10 -504.804 -0.226073   55.7716
11 -517.217 -0.266157   65.7316
12 -482.786 -0.263122   64.7191
13 -525.109 -0.212659   52.1564
14 -487.167 -0.292268   72.6354
15 -491.969 -0.238228   59.1312
16 -488.974 -0.249747   61.2809
17 -494.646 -0.251427   62.2525
18 -499.209 -0.272566   67.6210
19 -485.884 -0.259950   64.0654
20 -474.131 -0.259606   64.3899
21 -497.568 -0.235806   57.7776
22 -512.526 -0.246898   60.7521
23 -493.704 -0.250019   61.6655
goodbye

Screenshots (if appropriate):

Checklist:

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.