Observation information
- date-obs: 2025-06-12
- time-obs: 07:18:56.297800000
- date-end: 2025-06-12
- time-end: 09:25:13.277600000
- obs_id: A13_037T01_9000006476
- exposure: 6486.55646151
- 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_52501cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52501cztM0_level2_quad_clean.evt
|
| Size (bytes) | 747,279,360 | 103,939,200 |
| Size | 712.7 MB
| 99.1 MB
|
| Events in quadrant A | 3,727,301 | 714,044 |
| Events in quadrant B | 8,822,890 | 676,134 |
| Events in quadrant C | 7,234,994 | 628,055 |
| Events in quadrant D | 7,291,088 | 601,860 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16529 | 0 |
| B | 0 | 31459 | 0 |
| C | 0 | 26731 | 0 |
| D | 0 | 26935 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7577 | 97 | 1.280190% |
| B | 7577 | 1320 | 17.421143% |
| C | 7578 | 808 | 10.662444% |
| D | 7578 | 516 | 6.809184% |
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 | 7577 | 7577 | 42 | 42 | 0.55% | 0.55% |  |
| B | 7577 | 7577 | 1089 | 1089 | 14.37% | 14.37% |  |
| C | 7578 | 7578 | 734 | 734 | 9.69% | 9.69% |  |
| D | 7578 | 7578 | 543 | 543 | 7.17% | 7.17% |  |
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 | 11 | 3 | 153316 | 770.66 | 807 | 788 | 197.9 |
| A | 3 | 46 | 118636 | 595.43 | 807 | 788 | 197.9 |
| A | 15 | 174 | 88738 | 444.37 | 807 | 788 | 197.9 |
| B | 10 | 254 | 3136341 | 19049.1 | 761 | 734 | 164.6 |
| B | 10 | 44 | 2236279 | 13581.14 | 761 | 734 | 164.6 |
| B | 7 | 0 | 183810 | 1112.2 | 761 | 734 | 164.6 |
| C | 15 | 224 | 1955705 | 9536.06 | 749 | 744 | 205.0 |
| C | 13 | 3 | 551675 | 2687.37 | 749 | 744 | 205.0 |
| C | 2 | 12 | 331390 | 1612.85 | 749 | 744 | 205.0 |
| D | 15 | 93 | 3084662 | 14497.56 | 760 | 728 | 212.7 |
| D | 7 | 96 | 283604 | 1329.8 | 760 | 728 | 212.7 |
| D | 8 | 176 | 226491 | 1061.31 | 760 | 728 | 212.7 |
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 |  |