Observation information
- date-obs: 2021-09-27
- time-obs: 11:26:35.883100000
- date-end: 2021-09-27
- time-end: 13:53:40.889100000
- obs_id: A09_108T02_9000004706
- exposure: 4000.05098414
- 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_9000004706_32437cztM0_level2.evt
| modeM0/AS1A09_108T02_9000004706_32437cztM0_level2_quad_clean.evt
|
| Size (bytes) | 636,264,000 | 92,586,240 |
| Size | 606.8 MB
| 88.3 MB
|
| Events in quadrant A | 3,575,268 | 602,299 |
| Events in quadrant B | 6,122,962 | 603,982 |
| Events in quadrant C | 4,090,232 | 584,352 |
| Events in quadrant D | 5,047,736 | 565,943 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24 | 0 |
| B | 0 | 24 | 0 |
| C | 0 | 24 | 0 |
| D | 0 | 24 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14882 | 3 |
| B | 0 | 22619 | 2 |
| C | 0 | 16397 | 2 |
| D | 0 | 19641 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6410 | 123 | 1.918877% |
| B | 6410 | 521 | 8.127925% |
| C | 6410 | 445 | 6.942278% |
| D | 6410 | 141 | 2.199688% |
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 | 8825 | 6412 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8825 | 6412 | 163 | 163 | 1.85% | 2.54% |  |
| C | 8825 | 6412 | 27 | 27 | 0.31% | 0.42% |  |
| D | 8825 | 6412 | 26 | 26 | 0.29% | 0.41% |  |
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 | 6 | 16278 | 84.74 | 923 | 909 | 181.4 |
| A | 13 | 254 | 10599 | 53.43 | 923 | 909 | 181.4 |
| A | 3 | 137 | 8762 | 43.3 | 923 | 909 | 181.4 |
| B | 6 | 159 | 1597562 | 9633.81 | 893 | 874 | 165.7 |
| B | 4 | 80 | 1017904 | 6136.38 | 893 | 874 | 165.7 |
| B | 12 | 111 | 19726 | 113.75 | 893 | 874 | 165.7 |
| C | 14 | 238 | 206017 | 1021.18 | 870 | 880 | 200.9 |
| C | 10 | 22 | 142508 | 705.03 | 870 | 880 | 200.9 |
| C | 0 | 10 | 108547 | 535.97 | 870 | 880 | 200.9 |
| D | 8 | 195 | 1478020 | 7058.76 | 894 | 873 | 209.3 |
| D | 2 | 250 | 62858 | 296.2 | 894 | 873 | 209.3 |
| D | 1 | 47 | 49795 | 233.78 | 894 | 873 | 209.3 |
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 |  |