Observation information
- date-obs: 2021-08-19
- time-obs: 10:32:27.918400000
- date-end: 2021-08-19
- time-end: 12:57:12.920500000
- obs_id: A10_109T01_9000004646
- exposure: 4395.10226393
- 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_31859cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31859cztM0_level2_quad_clean.evt
|
| Size (bytes) | 609,569,280 | 111,836,160 |
| Size | 581.3 MB
| 106.7 MB
|
| Events in quadrant A | 3,780,520 | 768,579 |
| Events in quadrant B | 5,331,334 | 759,432 |
| Events in quadrant C | 4,914,344 | 705,046 |
| Events in quadrant D | 4,000,441 | 706,119 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15508 | 2 |
| B | 0 | 20102 | 2 |
| C | 0 | 19109 | 2 |
| D | 0 | 16403 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6423 | 82 | 1.276662% |
| B | 6423 | 161 | 2.506617% |
| C | 6423 | 580 | 9.030048% |
| D | 6423 | 65 | 1.011988% |
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 | 7733 | 6424 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7733 | 6424 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7733 | 6424 | 296 | 296 | 3.83% | 4.61% |  |
| D | 7733 | 6424 | 17 | 17 | 0.22% | 0.26% |  |
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 | 11677 | 55.93 | 978 | 965 | 191.5 |
| A | 13 | 6 | 8734 | 40.56 | 978 | 965 | 191.5 |
| A | 3 | 137 | 8673 | 40.24 | 978 | 965 | 191.5 |
| B | 6 | 159 | 1617592 | 9194.86 | 944 | 924 | 175.8 |
| B | 12 | 111 | 20248 | 109.9 | 944 | 924 | 175.8 |
| B | 11 | 111 | 19040 | 103.03 | 944 | 924 | 175.8 |
| C | 0 | 10 | 1181127 | 5800.75 | 880 | 891 | 203.5 |
| C | 14 | 238 | 151506 | 740.26 | 880 | 891 | 203.5 |
| C | 3 | 233 | 115409 | 562.85 | 880 | 891 | 203.5 |
| D | 10 | 203 | 170030 | 782.36 | 932 | 915 | 216.2 |
| D | 8 | 195 | 146448 | 673.26 | 932 | 915 | 216.2 |
| D | 2 | 250 | 46052 | 208.81 | 932 | 915 | 216.2 |
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 |  |