Observation information
- date-obs: 2025-06-10
- time-obs: 13:47:22.726900000
- date-end: 2025-06-10
- time-end: 19:16:15.671300000
- obs_id: A13_037T01_9000006476
- exposure: 11.4559260011
- 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_52477cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52477cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,999,240,640 | 165,709,440 |
| Size | 2.8 GB
| 158.0 MB
|
| Events in quadrant A | 12,766,773 | 1,548,226 |
| Events in quadrant B | 17,181,282 | 1,703,280 |
| Events in quadrant C | 34,576,955 | 507,340 |
| Events in quadrant D | 45,094,437 | 1,085 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50681 | 3 |
| B | 0 | 63565 | 3 |
| C | 0 | 115168 | 3 |
| D | 0 | 146403 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 370 | 0 |
| B | 0 | 370 | 0 |
| C | 0 | 370 | 0 |
| D | 0 | 370 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18223 | 1474 | 8.088679% |
| B | 18224 | 1753 | 9.619183% |
| C | 18224 | 13112 | 71.949078% |
| D | 18223 | 18215 | 99.956099% |
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 | 19733 | 18226 | 960 | 960 | 4.86% | 5.27% |  |
| B | 19734 | 18227 | 1101 | 1101 | 5.58% | 6.04% |  |
| C | 19734 | 18226 | 8968 | 8968 | 45.44% | 49.20% |  |
| D | 19732 | 18219 | 17091 | 17091 | 86.62% | 93.81% |  |
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 | 10 | 17 | 1993245 | 4250.16 | 1909 | 1861 | 468.5 |
| A | 4 | 61 | 897337 | 1911.19 | 1909 | 1861 | 468.5 |
| A | 10 | 16 | 503937 | 1071.57 | 1909 | 1861 | 468.5 |
| B | 10 | 254 | 5850292 | 14235.14 | 1908 | 1832 | 410.8 |
| B | 10 | 44 | 1091391 | 2651.98 | 1908 | 1832 | 410.8 |
| B | 4 | 171 | 832788 | 2022.54 | 1908 | 1832 | 410.8 |
| C | 15 | 224 | 19404745 | 63696.14 | 1108 | 1099 | 304.6 |
| C | 15 | 158 | 7508617 | 24644.85 | 1108 | 1099 | 304.6 |
| C | 5 | 80 | 613490 | 2010.29 | 1108 | 1099 | 304.6 |
| D | 15 | 93 | 39154520 | 333642.28 | 403 | 383 | 117.4 |
| D | 6 | 42 | 3108610 | 26485.99 | 403 | 383 | 117.4 |
| D | 8 | 176 | 316821 | 2696.45 | 403 | 383 | 117.4 |
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 |  |