Observation information
- date-obs: 2022-01-16
- time-obs: 22:37:05.987600000
- date-end: 2022-01-17
- time-end: 00:57:47.980300000
- obs_id: A05_208T01_9000004870
- exposure: 4287.9264089
- 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_34087cztM0_level2.evt
| modeM0/AS1A05_208T01_9000004870_34087cztM0_level2_quad_clean.evt
|
| Size (bytes) | 519,013,440 | 89,956,800 |
| Size | 495.0 MB
| 85.8 MB
|
| Events in quadrant A | 2,648,169 | 598,172 |
| Events in quadrant B | 4,950,396 | 590,485 |
| Events in quadrant C | 3,289,893 | 590,973 |
| Events in quadrant D | 4,450,790 | 552,811 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 114 | 0 |
| B | 0 | 114 | 0 |
| C | 0 | 114 | 0 |
| D | 0 | 114 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 28 | 0 |
| B | 0 | 28 | 0 |
| C | 0 | 28 | 0 |
| D | 0 | 29 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11384 | 3 |
| B | 0 | 18426 | 2 |
| C | 0 | 13015 | 2 |
| D | 0 | 17073 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5599 | 7 | 0.125022% |
| B | 5599 | 464 | 8.287194% |
| C | 5599 | 94 | 1.678871% |
| D | 5599 | 147 | 2.625469% |
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 | 7481 | 5600 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7481 | 5600 | 319 | 319 | 4.26% | 5.70% |  |
| C | 7481 | 5600 | 78 | 78 | 1.04% | 1.39% |  |
| D | 7481 | 5600 | 145 | 145 | 1.94% | 2.59% |  |
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 | 10 | 83 | 19175 | 135.88 | 678 | 665 | 136.2 |
| A | 13 | 6 | 10324 | 70.91 | 678 | 665 | 136.2 |
| A | 13 | 254 | 9384 | 64.01 | 678 | 665 | 136.2 |
| B | 5 | 172 | 1008411 | 7986.64 | 663 | 649 | 126.2 |
| B | 5 | 31 | 804364 | 6369.55 | 663 | 649 | 126.2 |
| B | 5 | 15 | 275576 | 2178.83 | 663 | 649 | 126.2 |
| C | 0 | 10 | 403329 | 2641.78 | 661 | 667 | 152.4 |
| C | 15 | 214 | 244970 | 1602.82 | 661 | 667 | 152.4 |
| C | 14 | 67 | 27280 | 174.6 | 661 | 667 | 152.4 |
| D | 8 | 195 | 988648 | 6193.76 | 650 | 633 | 159.5 |
| D | 7 | 223 | 269372 | 1684.7 | 650 | 633 | 159.5 |
| D | 2 | 250 | 175657 | 1097.21 | 650 | 633 | 159.5 |
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 |  |