Observation information
- date-obs: 2025-08-12
- time-obs: 02:46:01.320300000
- date-end: 2025-08-12
- time-end: 07:32:28.278900000
- obs_id: C09_011T09_9000006494
- exposure: 6767.49626958
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T09_9000006494_53406cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53406cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,186,510,400 | 191,309,760 |
| Size | 2.0 GB
| 182.4 MB
|
| Events in quadrant A | 15,132,046 | 1,330,818 |
| Events in quadrant B | 12,570,531 | 1,614,876 |
| Events in quadrant C | 32,891,450 | 604,616 |
| Events in quadrant D | 19,059,993 | 1,092,124 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 338 | 0 |
| B | 0 | 338 | 0 |
| C | 0 | 338 | 0 |
| D | 0 | 338 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56561 | 2 |
| B | 0 | 48692 | 2 |
| C | 0 | 108960 | 15 |
| D | 0 | 68349 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 16662 | 2735 | 16.414596% |
| B | 16663 | 884 | 5.305167% |
| C | 16661 | 10295 | 61.791009% |
| D | 16662 | 3790 | 22.746369% |
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 | 17187 | 16664 | 1841 | 1841 | 10.71% | 11.05% |  |
| B | 17188 | 16665 | 460 | 460 | 2.68% | 2.76% |  |
| C | 17186 | 16662 | 9902 | 9902 | 57.62% | 59.43% |  |
| D | 17187 | 16665 | 3436 | 3436 | 19.99% | 20.62% |  |
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 | 7 | 191 | 4454463 | 11305.35 | 1599 | 1561 | 393.9 |
| A | 7 | 190 | 1705095 | 4325.05 | 1599 | 1561 | 393.9 |
| A | 15 | 174 | 1120653 | 2841.23 | 1599 | 1561 | 393.9 |
| B | 4 | 171 | 1604251 | 4455.37 | 1710 | 1649 | 359.7 |
| B | 4 | 206 | 1253868 | 3481.27 | 1710 | 1649 | 359.7 |
| B | 2 | 249 | 1010388 | 2804.38 | 1710 | 1649 | 359.7 |
| C | 1 | 241 | 21973531 | 75136.16 | 1061 | 1054 | 292.4 |
| C | 15 | 224 | 4978671 | 17021.25 | 1061 | 1054 | 292.4 |
| C | 15 | 178 | 578023 | 1972.98 | 1061 | 1054 | 292.4 |
| D | 12 | 16 | 8751597 | 20545.12 | 1492 | 1421 | 425.9 |
| D | 0 | 18 | 1966222 | 4613.29 | 1492 | 1421 | 425.9 |
| D | 2 | 153 | 538130 | 1260.17 | 1492 | 1421 | 425.9 |
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 |  |