Observation information
- date-obs: 2022-01-18
- time-obs: 04:45:17.887600000
- date-end: 2022-01-18
- time-end: 07:22:30.877700000
- obs_id: A05_208T01_9000004870
- exposure: 2699.82013445
- sourceid: NGC 4939
- observer: KshamaSK
- ra_pnt: 196.0599
- dec_pnt: -10.3396
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_208T01_9000004870_34107cztM0_level2.evt
| modeM0/AS1A05_208T01_9000004870_34107cztM0_level2_quad_clean.evt
|
| Size (bytes) | 815,270,400 | 65,373,120 |
| Size | 777.5 MB
| 62.3 MB
|
| Events in quadrant A | 4,955,422 | 371,502 |
| Events in quadrant B | 6,839,095 | 373,461 |
| Events in quadrant C | 5,027,213 | 375,304 |
| Events in quadrant D | 7,376,061 | 349,893 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19227 | 1 |
| B | 0 | 25092 | 1 |
| C | 0 | 19540 | 1 |
| D | 0 | 26835 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7311 | 617 | 8.439338% |
| B | 7311 | 1018 | 13.924224% |
| C | 7311 | 153 | 2.092737% |
| D | 7311 | 681 | 9.314731% |
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 | 9434 | 7312 | 528 | 528 | 5.60% | 7.22% |  |
| B | 9434 | 7312 | 733 | 733 | 7.77% | 10.02% |  |
| C | 9434 | 7312 | 118 | 118 | 1.25% | 1.61% |  |
| D | 9434 | 7312 | 668 | 668 | 7.08% | 9.14% |  |
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 | 15 | 17 | 1550639 | 8902.43 | 873 | 857 | 174.1 |
| A | 13 | 6 | 20922 | 115.26 | 873 | 857 | 174.1 |
| A | 13 | 254 | 13619 | 73.31 | 873 | 857 | 174.1 |
| B | 5 | 172 | 3020984 | 18784.45 | 848 | 828 | 160.8 |
| B | 5 | 31 | 249213 | 1544.88 | 848 | 828 | 160.8 |
| B | 4 | 81 | 62298 | 382.32 | 848 | 828 | 160.8 |
| C | 0 | 10 | 679615 | 3350.97 | 877 | 884 | 202.5 |
| C | 0 | 239 | 411969 | 2029.57 | 877 | 884 | 202.5 |
| C | 15 | 214 | 308806 | 1520.25 | 877 | 884 | 202.5 |
| D | 8 | 195 | 1624473 | 7688.32 | 861 | 839 | 211.2 |
| D | 1 | 52 | 1406422 | 6655.8 | 861 | 839 | 211.2 |
| D | 13 | 249 | 324759 | 1533.84 | 861 | 839 | 211.2 |
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 |  |