Observation information
- date-obs: 2021-02-05
- time-obs: 22:59:38.890500000
- date-end: 2021-02-06
- time-end: 01:32:38.887600000
- obs_id: A10_048T03_9000004154
- exposure: 4905.13669604
- sourceid: NGC 4981
- observer: chayan
- ra_pnt: 197.2029
- dec_pnt: -6.7775
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A10_048T03_9000004154_28980cztM0_level2.evt
| modeM0/AS1A10_048T03_9000004154_28980cztM0_level2_quad_clean.evt
|
| Size (bytes) | 559,834,560 | 108,590,400 |
| Size | 533.9 MB
| 103.6 MB
|
| Events in quadrant A | 3,391,985 | 719,892 |
| Events in quadrant B | 3,711,539 | 744,636 |
| Events in quadrant C | 3,564,372 | 701,826 |
| Events in quadrant D | 5,834,161 | 657,122 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 25 | 0 |
| B | 0 | 26 | 0 |
| C | 0 | 26 | 0 |
| D | 0 | 26 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14158 | 2 |
| B | 0 | 14965 | 2 |
| C | 0 | 14576 | 2 |
| D | 0 | 21730 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6680 | 25 | 0.374251% |
| B | 6680 | 65 | 0.973054% |
| C | 6680 | 106 | 1.586826% |
| D | 6680 | 959 | 14.356287% |
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 | 7946 | 6677 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7946 | 6677 | 21 | 21 | 0.26% | 0.31% |  |
| C | 7946 | 6677 | 1 | 1 | 0.01% | 0.01% |  |
| D | 7946 | 6677 | 715 | 715 | 9.00% | 10.71% |  |
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 | 12 | 96 | 43160 | 246.74 | 860 | 846 | 171.5 |
| A | 15 | 192 | 24376 | 137.21 | 860 | 846 | 171.5 |
| A | 13 | 254 | 12099 | 65.62 | 860 | 846 | 171.5 |
| B | 10 | 245 | 177449 | 1091.13 | 862 | 841 | 161.9 |
| B | 10 | 246 | 128306 | 787.51 | 862 | 841 | 161.9 |
| B | 12 | 111 | 19877 | 117.61 | 862 | 841 | 161.9 |
| C | 3 | 233 | 178154 | 916.7 | 830 | 835 | 193.4 |
| C | 14 | 238 | 133981 | 688.34 | 830 | 835 | 193.4 |
| C | 2 | 114 | 15579 | 76.22 | 830 | 835 | 193.4 |
| D | 7 | 80 | 2098987 | 11512.76 | 765 | 745 | 182.3 |
| D | 8 | 195 | 612300 | 3355.52 | 765 | 745 | 182.3 |
| D | 1 | 52 | 220961 | 1208.29 | 765 | 745 | 182.3 |
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 |  |