Observation information
- date-obs: 2022-04-16
- time-obs: 18:20:54.778800000
- date-end: 2022-04-16
- time-end: 20:45:32.772800000
- obs_id: T05_022T01_9000005070
- exposure: 4395.64283057
- sourceid: 4U 1820-30
- observer: aruberi
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T05_022T01_9000005070_35416cztM0_level2.evt
| modeM0/AS1T05_022T01_9000005070_35416cztM0_level2_quad_clean.evt
|
| Size (bytes) | 550,926,720 | 84,836,160 |
| Size | 525.4 MB
| 80.9 MB
|
| Events in quadrant A | 2,679,462 | 573,984 |
| Events in quadrant B | 5,980,567 | 522,284 |
| Events in quadrant C | 3,405,830 | 562,024 |
| Events in quadrant D | 4,240,978 | 520,427 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11581 | 3 |
| B | 0 | 21569 | 2 |
| C | 0 | 13479 | 2 |
| D | 0 | 16343 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 116 | 0 |
| B | 0 | 116 | 0 |
| C | 0 | 116 | 0 |
| D | 0 | 116 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 31 | 0 |
| B | 0 | 31 | 0 |
| C | 0 | 31 | 0 |
| D | 0 | 31 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5572 | 13 | 0.233309% |
| B | 5572 | 1247 | 22.379756% |
| C | 5572 | 180 | 3.230438% |
| D | 5572 | 375 | 6.730079% |
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 | 8678 | 5574 | 1 | 1 | 0.01% | 0.02% |  |
| B | 8678 | 5574 | 923 | 923 | 10.64% | 16.56% |  |
| C | 8678 | 5574 | 141 | 141 | 1.62% | 2.53% |  |
| D | 8678 | 5574 | 271 | 271 | 3.12% | 4.86% |  |
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 | 131362 | 992.44 | 652 | 640 | 131.7 |
| A | 13 | 6 | 18302 | 134.09 | 652 | 640 | 131.7 |
| A | 9 | 143 | 8575 | 60.24 | 652 | 640 | 131.7 |
| B | 4 | 251 | 788481 | 6838.34 | 598 | 584 | 115.2 |
| B | 5 | 236 | 745932 | 6469.05 | 598 | 584 | 115.2 |
| B | 5 | 31 | 555605 | 4817.16 | 598 | 584 | 115.2 |
| C | 0 | 10 | 452190 | 3049.95 | 632 | 636 | 148.1 |
| C | 15 | 214 | 224358 | 1511.1 | 632 | 636 | 148.1 |
| C | 9 | 69 | 186892 | 1258.04 | 632 | 636 | 148.1 |
| D | 7 | 80 | 408320 | 2726.41 | 612 | 596 | 149.5 |
| D | 13 | 249 | 286553 | 1912.17 | 612 | 596 | 149.5 |
| D | 8 | 195 | 230192 | 1535.29 | 612 | 596 | 149.5 |
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 |  |