Observation information
- date-obs: 2025-06-09
- time-obs: 13:18:48.979100000
- date-end: 2025-06-09
- time-end: 18:52:28.922200000
- obs_id: A13_037T01_9000006476
- exposure: 25.1122294068
- 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_52462cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52462cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,411,799,040 | 137,825,280 |
| Size | 1.3 GB
| 131.4 MB
|
| Events in quadrant A | 7,760,017 | 1,114,828 |
| Events in quadrant B | 6,679,902 | 1,217,772 |
| Events in quadrant C | 11,256,315 | 979,807 |
| Events in quadrant D | 25,600,108 | 2,079 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 10 | 3 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 33739 | 2326 |
| B | 0 | 30832 | 2438 |
| C | 0 | 46083 | 4122 |
| D | 0 | 94015 | 9577 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 273 | 22 |
| B | 0 | 273 | 23 |
| C | 0 | 276 | 26 |
| D | 0 | 273 | 23 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 12534 | 604 | 4.818893% |
| B | 12502 | 217 | 1.735722% |
| C | 12398 | 1403 | 11.316341% |
| D | 12202 | 12185 | 99.860679% |
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 | 20013 | 12739 | 529 | 529 | 2.64% | 4.15% |  |
| B | 20017 | 12686 | 110 | 110 | 0.55% | 0.87% |  |
| C | 20010 | 12605 | 1252 | 1252 | 6.26% | 9.93% |  |
| D | 20000 | 12385 | 6984 | 6984 | 34.92% | 56.39% |  |
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 | 4 | 61 | 1162404 | 3536.54 | 1324 | 1292 | 328.3 |
| A | 13 | 248 | 493432 | 1498.97 | 1324 | 1292 | 328.3 |
| A | 8 | 249 | 218176 | 660.59 | 1324 | 1292 | 328.3 |
| B | 4 | 171 | 371540 | 1311.92 | 1324 | 1275 | 282.2 |
| B | 4 | 81 | 221539 | 780.44 | 1324 | 1275 | 282.2 |
| B | 0 | 213 | 216821 | 763.72 | 1324 | 1275 | 282.2 |
| C | 12 | 254 | 1620764 | 4783.93 | 1230 | 1220 | 338.5 |
| C | 2 | 12 | 1382159 | 4079.12 | 1230 | 1220 | 338.5 |
| C | 4 | 5 | 1316339 | 3884.7 | 1230 | 1220 | 338.5 |
| D | 15 | 93 | 23607568 | 567374.25 | 136 | 129 | 41.6 |
| D | 6 | 42 | 978662 | 23517.77 | 136 | 129 | 41.6 |
| D | 15 | 78 | 154243 | 3703.93 | 136 | 129 | 41.6 |
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 |  |