Observation information
- date-obs: 2021-09-26
- time-obs: 19:36:45.859900000
- date-end: 2021-09-27
- time-end: 14:08:12.889400000
- obs_id: A09_108T02_9000004706
- exposure: 30558.6548685
- sourceid: M31-II
- observer: bhargavi.sg
- ra_pnt: 9.965167
- dec_pnt: 40.35314
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A09_108T02_9000004706cztM0_level2_bc.evt
| modeM0/AS1A09_108T02_9000004706cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,753,893,440 | 645,537,600 |
Size | 2.6 GB
| 615.6 MB
|
Events in quadrant A | 10,338,023 | 4,172,498 |
Events in quadrant B | 26,343,269 | 4,269,663 |
Events in quadrant C | 26,166,800 | 3,800,231 |
Events in quadrant D | 17,240,663 | 3,962,966 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 992 | 0 |
B | 0 | 992 | 0 |
C | 0 | 992 | 0 |
D | 0 | 992 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 73 | 0 |
B | 0 | 73 | 0 |
C | 0 | 73 | 0 |
D | 0 | 74 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 102330 | 0 |
B | 0 | 158189 | 0 |
C | 0 | 154790 | 0 |
D | 0 | 123357 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 48737 | 500 | 1.025915% |
B | 48737 | 1930 | 3.960030% |
C | 48737 | 8087 | 16.593143% |
D | 48737 | 925 | 1.897942% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
A | 66688 | 48738 | 0 | 0 | 0.00% | 0.00% |  |
B | 66688 | 48741 | 2 | 2 | 0.00% | 0.00% |  |
C | 66688 | 48740 | 2151 | 2151 | 3.23% | 4.41% |  |
D | 66688 | 48740 | 110 | 110 | 0.16% | 0.23% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
Pixel properties |
Quadrant properties |
Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
A | 13 | 254 | 78929 | 134.04 | 2655 | 2612 | 569.4 |
A | 13 | 6 | 59516 | 99.94 | 2655 | 2612 | 569.4 |
A | 12 | 194 | 16898 | 25.09 | 2655 | 2612 | 569.4 |
B | 6 | 159 | 12564209 | 24346.66 | 2705 | 2642 | 515.9 |
B | 4 | 80 | 3141068 | 6082.86 | 2705 | 2642 | 515.9 |
B | 0 | 183 | 128315 | 243.58 | 2705 | 2642 | 515.9 |
C | 3 | 233 | 14745359 | 25736.16 | 2441 | 2436 | 572.8 |
C | 0 | 10 | 838517 | 1459.51 | 2441 | 2436 | 572.8 |
C | 10 | 22 | 358659 | 621.84 | 2441 | 2436 | 572.8 |
D | 8 | 195 | 4456690 | 7601.34 | 2608 | 2525 | 586.0 |
D | 14 | 52 | 725270 | 1233.41 | 2608 | 2525 | 586.0 |
D | 2 | 250 | 627288 | 1066.2 | 2608 | 2525 | 586.0 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
Quadrant A |
 |
 |
Quadrant B |
Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
Parameter |
Plot |
CZT HV Monitor |  |
D_VDD |  |
Temperature 1 |  |
Veto HV Monitor |  |
Veto LLD |  |
Alpha Counter |  |
_CPM_Rate |  |
CZT Counter |  |
+2.5 Volts monitor |  |
+5 Volts monitor |  |
_ROLL_ROT |  |
_Roll_DEC |  |
_Roll_RA |  |
Veto Counter |  |