Observation information
- date-obs: 2021-09-02
- time-obs: 03:45:48.767800000
- date-end: 2021-09-02
- time-end: 06:06:53.078700000
- obs_id: A10_109T01_9000004682
- exposure: 2744.04326694
- 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_9000004682_32062cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004682_32062cztM0_level2_quad_clean.evt
|
| Size (bytes) | 593,112,960 | 77,060,160 |
| Size | 565.6 MB
| 73.5 MB
|
| Events in quadrant A | 3,553,301 | 494,130 |
| Events in quadrant B | 5,506,255 | 491,890 |
| Events in quadrant C | 4,070,931 | 457,372 |
| Events in quadrant D | 4,403,981 | 448,070 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14214 | 2 |
| B | 0 | 20175 | 2 |
| C | 0 | 16016 | 2 |
| D | 0 | 17135 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6335 | 17 | 0.268350% |
| B | 6335 | 141 | 2.225730% |
| C | 6335 | 240 | 3.788477% |
| D | 6334 | 66 | 1.041996% |
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 | 7735 | 6336 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7735 | 6335 | 25 | 25 | 0.32% | 0.39% |  |
| C | 7735 | 6336 | 119 | 119 | 1.54% | 1.88% |  |
| D | 7734 | 6335 | 39 | 39 | 0.50% | 0.62% |  |
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 | 11582 | 59.48 | 919 | 906 | 179.5 |
| A | 3 | 137 | 8133 | 40.26 | 919 | 906 | 179.5 |
| A | 0 | 226 | 7873 | 38.81 | 919 | 906 | 179.5 |
| B | 6 | 159 | 1665271 | 9969.28 | 907 | 890 | 167.0 |
| B | 10 | 245 | 148377 | 883.41 | 907 | 890 | 167.0 |
| B | 5 | 172 | 99088 | 588.18 | 907 | 890 | 167.0 |
| C | 0 | 10 | 515433 | 2614.09 | 852 | 861 | 196.8 |
| C | 14 | 238 | 144632 | 730.37 | 852 | 861 | 196.8 |
| C | 4 | 175 | 35512 | 176.03 | 852 | 861 | 196.8 |
| D | 8 | 195 | 830405 | 4071.19 | 861 | 840 | 203.8 |
| D | 12 | 227 | 119372 | 581.71 | 861 | 840 | 203.8 |
| D | 12 | 233 | 102777 | 500.27 | 861 | 840 | 203.8 |
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 |  |