Observation information
- date-obs: 2025-06-12
- time-obs: 04:05:04.332500000
- date-end: 2025-06-12
- time-end: 05:59:11.312100000
- obs_id: A13_037T01_9000006476
- exposure: 1475.3806116
- 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_52499cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52499cztM0_level2_quad_clean.evt
|
| Size (bytes) | 249,393,600 | 33,497,280 |
| Size | 237.8 MB
| 31.9 MB
|
| Events in quadrant A | 1,112,218 | 242,382 |
| Events in quadrant B | 1,898,606 | 248,073 |
| Events in quadrant C | 4,116,911 | 129,265 |
| Events in quadrant D | 1,896,685 | 204,853 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 1 | 140132126029864 | 140131897966638 |
| B | 1 | -1 | -1 |
| C | 1 | -1 | -1 |
| D | 1 | -1 | -1 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5518 | 0 |
| B | 0 | 7573 | 0 |
| C | 0 | 13996 | 0 |
| D | 0 | 7460 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 57 | 0 |
| B | 0 | 53 | 0 |
| C | 0 | 59 | 0 |
| D | 0 | 56 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2738 | 0 | 0.000000% |
| B | 2685 | 146 | 5.437616% |
| C | 2537 | 1099 | 43.318881% |
| D | 2592 | 17 | 0.655864% |
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 | 6847 | 2888 | 0 | 0 | 0.00% | 0.00% |  |
| B | 6847 | 2841 | 126 | 126 | 1.84% | 4.44% |  |
| C | 6845 | 2655 | 1067 | 1067 | 15.59% | 40.19% |  |
| D | 6848 | 2726 | 25 | 25 | 0.37% | 0.92% |  |
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 | 8 | 249 | 10816 | 155.32 | 272 | 265 | 67.9 |
| A | 8 | 9 | 9690 | 138.74 | 272 | 265 | 67.9 |
| A | 11 | 3 | 9050 | 129.32 | 272 | 265 | 67.9 |
| B | 10 | 44 | 659214 | 11453.35 | 259 | 251 | 57.5 |
| B | 4 | 81 | 57181 | 989.49 | 259 | 251 | 57.5 |
| B | 10 | 254 | 53238 | 920.96 | 259 | 251 | 57.5 |
| C | 15 | 224 | 2677596 | 53684.03 | 178 | 176 | 49.9 |
| C | 4 | 5 | 297862 | 5968.8 | 178 | 176 | 49.9 |
| C | 2 | 12 | 262454 | 5258.85 | 178 | 176 | 49.9 |
| D | 15 | 93 | 696290 | 9895.46 | 242 | 230 | 70.3 |
| D | 6 | 42 | 137193 | 1947.12 | 242 | 230 | 70.3 |
| D | 2 | 153 | 40194 | 568.14 | 242 | 230 | 70.3 |
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 |  |