Observation information
- date-obs: 2021-08-20
- time-obs: 14:30:47.943300000
- date-end: 2021-08-20
- time-end: 16:47:08.945400000
- obs_id: A10_109T01_9000004646
- exposure: 5074.19454969
- 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_31876cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31876cztM0_level2_quad_clean.evt
|
| Size (bytes) | 586,183,680 | 123,275,520 |
| Size | 559.0 MB
| 117.6 MB
|
| Events in quadrant A | 3,545,182 | 853,205 |
| Events in quadrant B | 5,299,536 | 835,577 |
| Events in quadrant C | 3,944,839 | 803,116 |
| Events in quadrant D | 4,519,141 | 784,203 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14616 | 2 |
| B | 0 | 20191 | 2 |
| C | 0 | 16230 | 2 |
| D | 0 | 17709 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6568 | 106 | 1.613886% |
| B | 6568 | 217 | 3.303898% |
| C | 6568 | 261 | 3.973812% |
| D | 6567 | 189 | 2.878026% |
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 | 7673 | 6569 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7673 | 6569 | 13 | 13 | 0.17% | 0.20% |  |
| C | 7673 | 6569 | 24 | 24 | 0.31% | 0.37% |  |
| D | 7672 | 6568 | 101 | 101 | 1.32% | 1.54% |  |
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 | 10658 | 53.62 | 918 | 902 | 181.9 |
| A | 3 | 137 | 8684 | 42.77 | 918 | 902 | 181.9 |
| A | 0 | 226 | 7695 | 37.33 | 918 | 902 | 181.9 |
| B | 6 | 159 | 1682370 | 10057.47 | 888 | 869 | 167.2 |
| B | 0 | 213 | 31543 | 183.47 | 888 | 869 | 167.2 |
| B | 10 | 245 | 30675 | 178.28 | 888 | 869 | 167.2 |
| C | 3 | 233 | 259284 | 1276.32 | 867 | 878 | 202.5 |
| C | 14 | 238 | 143869 | 706.26 | 867 | 878 | 202.5 |
| C | 0 | 10 | 133559 | 655.34 | 867 | 878 | 202.5 |
| D | 8 | 195 | 645397 | 3136.08 | 882 | 862 | 205.5 |
| D | 2 | 250 | 132447 | 640.25 | 882 | 862 | 205.5 |
| D | 10 | 199 | 127487 | 616.11 | 882 | 862 | 205.5 |
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 |  |