Observation information
- date-obs: 2021-08-16
- time-obs: 06:00:47.851800000
- date-end: 2021-08-21
- time-end: 00:54:59.956200000
- obs_id: A10_109T01_9000004646
- exposure: 134138.662995
- 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_9000004646cztM0_level2.fits
| modeM0/AS1A10_109T01_9000004646cztM0_level2_quad_clean.evt
|
| Size (bytes) | 3,606,528,960 | 2,867,270,400 |
| Size | 3.4 GB
| 2.7 GB
|
| Events in quadrant A | 22,945,922 | 16,623,120 |
| Events in quadrant B | 21,202,790 | 16,295,678 |
| Events in quadrant C | 21,585,842 | 15,595,044 |
| Events in quadrant D | 19,564,810 | 14,395,503 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7114 | 0 |
| B | 0 | 7112 | 0 |
| C | 0 | 7112 | 0 |
| D | 0 | 7118 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 781714 | 0 |
| B | 0 | 1091638 | 0 |
| C | 0 | 856449 | 0 |
| D | 0 | 866010 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 577 | 0 |
| B | 0 | 577 | 0 |
| C | 0 | 577 | 0 |
| D | 0 | 577 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 349337 | 8053 | 2.305224% |
| B | 349157 | 10258 | 2.937933% |
| C | 349361 | 15041 | 4.305289% |
| D | 349251 | 7034 | 2.014024% |
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 | 413097 | 349461 | 0 | 0 | 0.00% | 0.00% |  |
| B | 413097 | 349415 | 0 | 0 | 0.00% | 0.00% |  |
| C | 413097 | 349557 | 0 | 0 | 0.00% | 0.00% |  |
| D | 413097 | 349486 | 0 | 0 | 0.00% | 0.00% |  |
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 | 0 | 29 | 19509 | 9.79 | 5965 | 5615 | 1419.4 |
| A | 7 | 110 | 17853 | 8.62 | 5965 | 5615 | 1419.4 |
| A | 9 | 19 | 17402 | 8.3 | 5965 | 5615 | 1419.4 |
| B | 2 | 9 | 16740 | 10.51 | 5610 | 5368 | 1081.8 |
| B | 5 | 128 | 14375 | 8.33 | 5610 | 5368 | 1081.8 |
| B | 2 | 8 | 14063 | 8.04 | 5610 | 5368 | 1081.8 |
| C | 3 | 187 | 14646 | 6.49 | 5728 | 5398 | 1425.9 |
| C | 3 | 126 | 14642 | 6.48 | 5728 | 5398 | 1425.9 |
| C | 12 | 241 | 14623 | 6.47 | 5728 | 5398 | 1425.9 |
| D | 10 | 189 | 13903 | 6.04 | 5589 | 5121 | 1454.4 |
| D | 3 | 14 | 13701 | 5.9 | 5589 | 5121 | 1454.4 |
| D | 6 | 67 | 13568 | 5.81 | 5589 | 5121 | 1454.4 |
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 |  |