Observation information
- date-obs: 2021-08-18
- time-obs: 04:52:58.895000000
- date-end: 2021-08-18
- time-end: 07:17:14.896400000
- obs_id: A10_109T01_9000004646
- exposure: 3447.08381693
- 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_31840cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31840cztM0_level2_quad_clean.evt
|
| Size (bytes) | 571,642,560 | 79,853,760 |
| Size | 545.2 MB
| 76.2 MB
|
| Events in quadrant A | 3,421,000 | 503,986 |
| Events in quadrant B | 5,493,120 | 500,664 |
| Events in quadrant C | 3,908,812 | 467,690 |
| Events in quadrant D | 4,019,556 | 462,607 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14275 | 2 |
| B | 0 | 21547 | 2 |
| C | 0 | 15679 | 2 |
| D | 0 | 16265 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6941 | 69 | 0.994093% |
| B | 6941 | 159 | 2.290736% |
| C | 6941 | 517 | 7.448494% |
| D | 6941 | 220 | 3.169572% |
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 | 8656 | 6943 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8656 | 6943 | 21 | 21 | 0.24% | 0.30% |  |
| C | 8656 | 6943 | 29 | 29 | 0.34% | 0.42% |  |
| D | 8656 | 6943 | 166 | 166 | 1.92% | 2.39% |  |
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 | 12418 | 65.27 | 883 | 868 | 176.9 |
| A | 13 | 6 | 12183 | 63.95 | 883 | 868 | 176.9 |
| A | 3 | 137 | 9196 | 47.07 | 883 | 868 | 176.9 |
| B | 6 | 159 | 1813426 | 10767.35 | 869 | 847 | 168.3 |
| B | 10 | 245 | 241971 | 1432.36 | 869 | 847 | 168.3 |
| B | 12 | 111 | 21253 | 121.22 | 869 | 847 | 168.3 |
| C | 14 | 238 | 244377 | 1260.55 | 822 | 828 | 193.2 |
| C | 0 | 10 | 215124 | 1109.14 | 822 | 828 | 193.2 |
| C | 14 | 254 | 145366 | 748.09 | 822 | 828 | 193.2 |
| D | 12 | 218 | 499815 | 2493.74 | 841 | 818 | 200.1 |
| D | 8 | 195 | 218392 | 1087.33 | 841 | 818 | 200.1 |
| D | 2 | 250 | 80575 | 398.59 | 841 | 818 | 200.1 |
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 |  |