Observation information
- date-obs: 2025-06-07
- time-obs: 23:00:18.376600000
- date-end: 2025-06-08
- time-end: 01:18:22.352600000
- obs_id: A13_037T01_9000006476
- exposure: 3004.90945524
- 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_52437cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52437cztM0_level2_quad_clean.evt
|
| Size (bytes) | 734,071,680 | 90,089,280 |
| Size | 700.1 MB
| 85.9 MB
|
| Events in quadrant A | 3,066,109 | 705,324 |
| Events in quadrant B | 3,553,793 | 716,215 |
| Events in quadrant C | 6,417,907 | 576,726 |
| Events in quadrant D | 13,627,426 | 272,980 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14174 | 2 |
| B | 0 | 15499 | 2 |
| C | 0 | 23607 | 2 |
| D | 0 | 44955 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6549 | 52 | 0.794014% |
| B | 6549 | 164 | 2.504199% |
| C | 6549 | 905 | 13.818904% |
| D | 6549 | 3942 | 60.192396% |
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 | 7644 | 6550 | 21 | 21 | 0.27% | 0.32% |  |
| B | 7644 | 6550 | 58 | 58 | 0.76% | 0.89% |  |
| C | 7644 | 6550 | 788 | 788 | 10.31% | 12.03% |  |
| D | 7643 | 6548 | 3820 | 3820 | 49.98% | 58.34% |  |
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 | 248 | 74553 | 404.15 | 713 | 696 | 182.7 |
| A | 5 | 240 | 36495 | 195.89 | 713 | 696 | 182.7 |
| A | 11 | 3 | 34194 | 183.3 | 713 | 696 | 182.7 |
| B | 4 | 171 | 179674 | 1163.51 | 702 | 678 | 153.8 |
| B | 4 | 173 | 174010 | 1126.69 | 702 | 678 | 153.8 |
| B | 0 | 213 | 70355 | 452.91 | 702 | 678 | 153.8 |
| C | 0 | 225 | 1936925 | 10466.29 | 655 | 651 | 185.0 |
| C | 1 | 45 | 487781 | 2633.12 | 655 | 651 | 185.0 |
| C | 4 | 5 | 450653 | 2432.43 | 655 | 651 | 185.0 |
| D | 15 | 93 | 5384654 | 36420.97 | 503 | 479 | 147.8 |
| D | 12 | 17 | 4923413 | 33300.93 | 503 | 479 | 147.8 |
| D | 12 | 128 | 272295 | 1838.69 | 503 | 479 | 147.8 |
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 |  |