Observation information
- date-obs: 2025-06-08
- time-obs: 01:26:29.350800000
- date-end: 2025-06-08
- time-end: 03:06:03.332500000
- obs_id: A13_037T01_9000006476
- exposure: 733.162947237
- 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_52438cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52438cztM0_level2_quad_clean.evt
|
| Size (bytes) | 170,372,160 | 18,034,560 |
| Size | 162.5 MB
| 17.2 MB
|
| Events in quadrant A | 723,090 | 145,715 |
| Events in quadrant B | 914,242 | 154,382 |
| Events in quadrant C | 2,125,216 | 71,757 |
| Events in quadrant D | 2,430,044 | 67,355 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 4 |
| B | 0 | 10 | 1 |
| C | 0 | 11 | 2 |
| D | 0 | 12 | 4 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5780 | 2636 |
| B | 0 | 6857 | 3198 |
| C | 0 | 12428 | 5175 |
| D | 0 | 16224 | 8053 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 62 | 29 |
| B | 0 | 61 | 31 |
| C | 0 | 59 | 25 |
| D | 0 | 56 | 21 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 1491 | 9 | 0.603622% |
| B | 1490 | 24 | 1.610738% |
| C | 1381 | 660 | 47.791455% |
| D | 1379 | 686 | 49.746193% |
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 | 4302 | 1566 | 3 | 3 | 0.07% | 0.19% |  |
| B | 5482 | 1557 | 1 | 1 | 0.02% | 0.06% |  |
| C | 4328 | 1389 | 556 | 556 | 12.85% | 40.03% |  |
| D | 4167 | 1414 | 605 | 605 | 14.52% | 42.79% |  |
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 | 7414 | 165.0 | 173 | 169 | 43.9 |
| A | 4 | 3 | 6234 | 138.13 | 173 | 169 | 43.9 |
| A | 3 | 95 | 5782 | 127.83 | 173 | 169 | 43.9 |
| B | 7 | 0 | 126208 | 3259.67 | 170 | 164 | 38.7 |
| B | 5 | 172 | 38868 | 1000.94 | 170 | 164 | 38.7 |
| B | 4 | 81 | 22867 | 587.13 | 170 | 164 | 38.7 |
| C | 15 | 164 | 1390794 | 45894.42 | 106 | 104 | 30.3 |
| C | 4 | 5 | 173454 | 5720.76 | 106 | 104 | 30.3 |
| C | 15 | 165 | 44072 | 1451.0 | 106 | 104 | 30.3 |
| D | 15 | 93 | 1105560 | 32246.83 | 117 | 111 | 34.3 |
| D | 12 | 17 | 664226 | 19372.76 | 117 | 111 | 34.3 |
| D | 11 | 245 | 39386 | 1145.68 | 117 | 111 | 34.3 |
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 |  |