Observation information
- date-obs: 2021-08-17
- time-obs: 11:50:05.879700000
- date-end: 2021-08-17
- time-end: 13:56:06.880800000
- obs_id: A10_109T01_9000004646
- exposure: 4599.04141311
- 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_31830cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31830cztM0_level2_quad_clean.evt
|
| Size (bytes) | 629,239,680 | 116,971,200 |
| Size | 600.1 MB
| 111.6 MB
|
| Events in quadrant A | 3,635,311 | 812,883 |
| Events in quadrant B | 5,576,419 | 794,628 |
| Events in quadrant C | 4,694,671 | 754,769 |
| Events in quadrant D | 4,727,295 | 743,168 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14970 | 1 |
| B | 0 | 20681 | 1 |
| C | 0 | 18770 | 1 |
| D | 0 | 18571 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6261 | 110 | 1.756908% |
| B | 6261 | 207 | 3.306181% |
| C | 6261 | 392 | 6.260981% |
| D | 6261 | 129 | 2.060374% |
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 | 7561 | 6262 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7561 | 6262 | 23 | 23 | 0.30% | 0.37% |  |
| C | 7561 | 6262 | 83 | 83 | 1.10% | 1.33% |  |
| D | 7561 | 6262 | 47 | 47 | 0.62% | 0.75% |  |
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 | 10850 | 53.85 | 942 | 931 | 184.2 |
| A | 3 | 137 | 8468 | 40.92 | 942 | 931 | 184.2 |
| A | 0 | 226 | 8089 | 38.86 | 942 | 931 | 184.2 |
| B | 6 | 159 | 1611089 | 9546.74 | 905 | 887 | 168.7 |
| B | 10 | 245 | 376022 | 2224.14 | 905 | 887 | 168.7 |
| B | 0 | 183 | 26800 | 153.64 | 905 | 887 | 168.7 |
| C | 3 | 233 | 657617 | 3280.4 | 872 | 884 | 200.2 |
| C | 0 | 10 | 432612 | 2156.5 | 872 | 884 | 200.2 |
| C | 14 | 238 | 160289 | 796.23 | 872 | 884 | 200.2 |
| D | 8 | 195 | 1099827 | 5238.74 | 901 | 886 | 209.8 |
| D | 12 | 233 | 168455 | 798.81 | 901 | 886 | 209.8 |
| D | 2 | 250 | 44834 | 209.5 | 901 | 886 | 209.8 |
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 |  |