Observation information
- date-obs: 2025-06-15
- time-obs: 21:45:16.530600000
- date-end: 2025-06-16
- time-end: 00:10:13.510900000
- obs_id: C09_011T06_9000006478
- exposure: 4235.67628592
- 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_011T06_9000006478_52555cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52555cztM0_level2_quad_clean.evt
|
| Size (bytes) | 839,629,440 | 82,123,200 |
| Size | 800.7 MB
| 78.3 MB
|
| Events in quadrant A | 6,756,063 | 563,892 |
| Events in quadrant B | 6,923,893 | 574,468 |
| Events in quadrant C | 6,782,464 | 526,625 |
| Events in quadrant D | 10,121,654 | 372,838 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24579 | 2 |
| B | 0 | 25060 | 2 |
| C | 0 | 24637 | 2 |
| D | 0 | 34538 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6428 | 971 | 15.105787% |
| B | 6428 | 1204 | 18.730554% |
| C | 6428 | 1050 | 16.334785% |
| D | 6427 | 2462 | 38.307142% |
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 | 7623 | 6429 | 1088 | 1088 | 14.27% | 16.92% |  |
| B | 7623 | 6429 | 963 | 963 | 12.63% | 14.98% |  |
| C | 7623 | 6429 | 864 | 864 | 11.33% | 13.44% |  |
| D | 7622 | 6428 | 2179 | 2179 | 28.59% | 33.90% |  |
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 | 12 | 80 | 3689584 | 22152.71 | 657 | 639 | 166.5 |
| A | 4 | 95 | 167384 | 1001.33 | 657 | 639 | 166.5 |
| A | 4 | 239 | 63247 | 375.97 | 657 | 639 | 166.5 |
| B | 10 | 254 | 1814081 | 13678.27 | 630 | 609 | 132.6 |
| B | 10 | 44 | 1306850 | 9852.44 | 630 | 609 | 132.6 |
| B | 4 | 170 | 658626 | 4963.15 | 630 | 609 | 132.6 |
| C | 15 | 248 | 1479208 | 8646.85 | 617 | 613 | 171.0 |
| C | 15 | 224 | 960933 | 5615.97 | 617 | 613 | 171.0 |
| C | 13 | 3 | 854857 | 4995.63 | 617 | 613 | 171.0 |
| D | 6 | 42 | 3404593 | 22125.26 | 528 | 503 | 153.9 |
| D | 8 | 176 | 2334568 | 15170.51 | 528 | 503 | 153.9 |
| D | 12 | 17 | 682547 | 4433.02 | 528 | 503 | 153.9 |
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 |  |