Observation information
- date-obs: 2021-08-19
- time-obs: 22:51:57.932300000
- date-end: 2021-08-20
- time-end: 04:37:31.936800000
- obs_id: A10_109T01_9000004646
- exposure: 11005.1077575
- sourceid: Cygnus X-1
- observer: tanmoy
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A10_109T01_9000004646_31868cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31868cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,547,858,880 | 254,056,320 |
| Size | 1.4 GB
| 242.3 MB
|
| Events in quadrant A | 8,929,127 | 1,663,897 |
| Events in quadrant B | 14,227,556 | 1,644,628 |
| Events in quadrant C | 11,433,027 | 1,562,978 |
| Events in quadrant D | 11,036,891 | 1,544,395 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 380 | 0 |
| B | 0 | 380 | 0 |
| C | 0 | 380 | 0 |
| D | 0 | 380 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 38150 | 4 |
| B | 0 | 56458 | 6 |
| C | 0 | 46051 | 4 |
| D | 0 | 45233 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18559 | 49 | 0.264023% |
| B | 18558 | 270 | 1.454898% |
| C | 18559 | 635 | 3.421521% |
| D | 18559 | 196 | 1.056091% |
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 | 20734 | 18563 | 0 | 0 | 0.00% | 0.00% |  |
| B | 20733 | 18562 | 25 | 25 | 0.12% | 0.13% |  |
| C | 20734 | 18563 | 128 | 128 | 0.62% | 0.69% |  |
| D | 20734 | 18563 | 99 | 99 | 0.48% | 0.53% |  |
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 | 254 | 28152 | 55.89 | 2313 | 2272 | 463.1 |
| A | 3 | 137 | 24029 | 46.98 | 2313 | 2272 | 463.1 |
| A | 0 | 226 | 19089 | 36.32 | 2313 | 2272 | 463.1 |
| B | 6 | 159 | 4899254 | 11271.85 | 2279 | 2221 | 434.4 |
| B | 0 | 213 | 112674 | 254.24 | 2279 | 2221 | 434.4 |
| B | 10 | 247 | 98213 | 220.95 | 2279 | 2221 | 434.4 |
| C | 3 | 233 | 866942 | 1677.93 | 2201 | 2218 | 515.4 |
| C | 10 | 22 | 784245 | 1517.46 | 2201 | 2218 | 515.4 |
| C | 0 | 10 | 610133 | 1179.61 | 2201 | 2218 | 515.4 |
| D | 8 | 195 | 1959289 | 3646.47 | 2233 | 2176 | 536.7 |
| D | 12 | 233 | 171706 | 315.87 | 2233 | 2176 | 536.7 |
| D | 2 | 250 | 131860 | 241.63 | 2233 | 2176 | 536.7 |
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 |  |