Observation information
- date-obs: 2025-06-12
- time-obs: 17:45:22.194700000
- date-end: 2025-06-12
- time-end: 19:50:00.173000000
- obs_id: A13_037T01_9000006476
- exposure: 2467.4087106
- 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_52507cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52507cztM0_level2_quad_clean.evt
|
| Size (bytes) | 978,632,640 | 77,224,320 |
| Size | 933.3 MB
| 73.6 MB
|
| Events in quadrant A | 3,328,660 | 706,898 |
| Events in quadrant B | 11,399,512 | 436,211 |
| Events in quadrant C | 12,972,662 | 229,563 |
| Events in quadrant D | 8,016,598 | 506,902 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14486 | 1 |
| B | 0 | 38330 | 1 |
| C | 0 | 43070 | 6 |
| D | 0 | 28362 | 1 |
| 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 | 6578 | 64 | 0.972940% |
| B | 6578 | 3142 | 47.765278% |
| C | 6577 | 4406 | 66.991029% |
| D | 6578 | 1470 | 22.347218% |
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 | 7478 | 6578 | 6 | 6 | 0.08% | 0.09% |  |
| B | 7478 | 6578 | 2958 | 2958 | 39.56% | 44.97% |  |
| C | 7476 | 6576 | 3843 | 3843 | 51.40% | 58.44% |  |
| D | 7478 | 6578 | 1464 | 1464 | 19.58% | 22.26% |  |
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 | 210797 | 1122.82 | 739 | 721 | 187.1 |
| A | 11 | 3 | 87885 | 465.88 | 739 | 721 | 187.1 |
| A | 12 | 18 | 60845 | 321.35 | 739 | 721 | 187.1 |
| B | 10 | 44 | 7583624 | 64201.94 | 537 | 518 | 118.1 |
| B | 7 | 0 | 637447 | 5392.52 | 537 | 518 | 118.1 |
| B | 10 | 254 | 509032 | 4305.3 | 537 | 518 | 118.1 |
| C | 15 | 224 | 9531350 | 81719.22 | 415 | 410 | 116.6 |
| C | 4 | 5 | 1141964 | 9787.8 | 415 | 410 | 116.6 |
| C | 13 | 3 | 233617 | 1999.54 | 415 | 410 | 116.6 |
| D | 15 | 93 | 3936159 | 21110.71 | 651 | 625 | 186.4 |
| D | 2 | 120 | 576284 | 3087.91 | 651 | 625 | 186.4 |
| D | 8 | 176 | 269436 | 1441.93 | 651 | 625 | 186.4 |
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 |  |