Observation information
- date-obs: 2025-06-11
- time-obs: 20:58:58.406700000
- date-end: 2025-06-11
- time-end: 22:59:36.386300000
- obs_id: A13_037T01_9000006476
- exposure: 3160.33301258
- 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_52495cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52495cztM0_level2_quad_clean.evt
|
| Size (bytes) | 829,958,400 | 72,725,760 |
| Size | 791.5 MB
| 69.4 MB
|
| Events in quadrant A | 2,714,652 | 594,839 |
| Events in quadrant B | 7,445,882 | 488,357 |
| Events in quadrant C | 7,733,674 | 418,931 |
| Events in quadrant D | 12,356,270 | 273,823 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12623 | 1 |
| B | 0 | 26164 | 1 |
| C | 0 | 27146 | 1 |
| D | 0 | 40877 | 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 | 6098 | 20 | 0.327976% |
| B | 6099 | 1688 | 27.676668% |
| C | 6098 | 1815 | 29.763857% |
| D | 6098 | 3263 | 53.509347% |
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 | 7238 | 6099 | 10 | 10 | 0.14% | 0.16% |  |
| B | 7239 | 6100 | 1544 | 1544 | 21.33% | 25.31% |  |
| C | 7238 | 6099 | 1615 | 1615 | 22.31% | 26.48% |  |
| D | 7238 | 6099 | 3303 | 3303 | 45.63% | 54.16% |  |
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 | 65236 | 397.65 | 649 | 632 | 162.5 |
| A | 5 | 240 | 30135 | 181.6 | 649 | 632 | 162.5 |
| A | 3 | 14 | 24671 | 147.96 | 649 | 632 | 162.5 |
| B | 10 | 44 | 4718592 | 39640.28 | 553 | 534 | 119.0 |
| B | 10 | 254 | 138529 | 1159.41 | 553 | 534 | 119.0 |
| B | 5 | 172 | 109513 | 915.62 | 553 | 534 | 119.0 |
| C | 15 | 224 | 4739494 | 32085.18 | 536 | 531 | 147.7 |
| C | 2 | 12 | 231536 | 1564.02 | 536 | 531 | 147.7 |
| C | 13 | 3 | 213920 | 1444.75 | 536 | 531 | 147.7 |
| D | 15 | 93 | 6872951 | 47377.74 | 502 | 480 | 145.1 |
| D | 6 | 42 | 2097571 | 14457.02 | 502 | 480 | 145.1 |
| D | 8 | 176 | 493891 | 3401.5 | 502 | 480 | 145.1 |
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 |  |