Observation information
- date-obs: 2025-06-10
- time-obs: 19:00:30.674100000
- date-end: 2025-06-10
- time-end: 21:00:15.653000000
- obs_id: A13_037T01_9000006476
- exposure: 1.90171456337
- sourceid: Cygnus X-2
- observer: ranjeev
- ra_pnt: 326.1714
- dec_pnt: 38.32141
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_037T01_9000006476_52478cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52478cztM0_level2_quad_clean.evt
|
| Size (bytes) | 825,396,480 | 72,100,800 |
| Size | 787.2 MB
| 68.8 MB
|
| Events in quadrant A | 4,031,086 | 571,550 |
| Events in quadrant B | 5,629,771 | 639,665 |
| Events in quadrant C | 4,429,795 | 535,942 |
| Events in quadrant D | 15,977,857 | 154 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16477 | 1 |
| B | 0 | 20920 | 1 |
| C | 0 | 17761 | 1 |
| D | 0 | 51787 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6250 | 444 | 7.104000% |
| B | 6250 | 270 | 4.320000% |
| C | 6251 | 459 | 7.342825% |
| D | 6251 | 6250 | 99.984003% |
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 | 7185 | 6251 | 344 | 344 | 4.79% | 5.50% |  |
| B | 7185 | 6251 | 289 | 289 | 4.02% | 4.62% |  |
| C | 7186 | 6252 | 329 | 329 | 4.58% | 5.26% |  |
| D | 7185 | 6250 | 6008 | 6008 | 83.62% | 96.13% |  |
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 | 4 | 61 | 514606 | 3227.83 | 637 | 622 | 159.2 |
| A | 10 | 17 | 456741 | 2864.44 | 637 | 622 | 159.2 |
| A | 8 | 249 | 99432 | 620.53 | 637 | 622 | 159.2 |
| B | 10 | 254 | 2448217 | 17179.02 | 660 | 636 | 142.5 |
| B | 4 | 171 | 150887 | 1054.58 | 660 | 636 | 142.5 |
| B | 10 | 44 | 130477 | 911.32 | 660 | 636 | 142.5 |
| C | 15 | 224 | 642675 | 3727.23 | 630 | 625 | 172.3 |
| C | 12 | 254 | 384815 | 2230.3 | 630 | 625 | 172.3 |
| C | 13 | 3 | 306336 | 1774.72 | 630 | 625 | 172.3 |
| D | 15 | 93 | 11830106 | 255112.76 | 156 | 148 | 46.4 |
| D | 6 | 42 | 3201219 | 69031.02 | 156 | 148 | 46.4 |
| D | 8 | 176 | 159798 | 3442.85 | 156 | 148 | 46.4 |
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 |  |