Observation information
- date-obs: 2025-07-25
- time-obs: 18:11:41.713100000
- date-end: 2025-07-25
- time-end: 20:15:18.695400000
- obs_id: C09_011T07_9000006488
- exposure: 4616.49246997
- 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_011T07_9000006488_53146cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53146cztM0_level2_quad_clean.evt
|
| Size (bytes) | 693,694,080 | 88,551,360 |
| Size | 661.6 MB
| 84.4 MB
|
| Events in quadrant A | 3,286,450 | 650,881 |
| Events in quadrant B | 3,365,306 | 669,197 |
| Events in quadrant C | 8,716,622 | 470,515 |
| Events in quadrant D | 9,805,897 | 436,854 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14685 | 1 |
| B | 0 | 14857 | 1 |
| C | 0 | 30443 | 1 |
| D | 0 | 33653 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6502 | 137 | 2.107044% |
| B | 6503 | 147 | 2.260495% |
| C | 6503 | 1760 | 27.064432% |
| D | 6502 | 2024 | 31.128883% |
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 | 7417 | 6503 | 96 | 96 | 1.29% | 1.48% |  |
| B | 7418 | 6503 | 89 | 89 | 1.20% | 1.37% |  |
| C | 7418 | 6504 | 1588 | 1588 | 21.41% | 24.42% |  |
| D | 7417 | 6503 | 1767 | 1767 | 23.82% | 27.17% |  |
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 | 115 | 280283 | 1596.72 | 689 | 670 | 175.1 |
| A | 15 | 174 | 98416 | 558.17 | 689 | 670 | 175.1 |
| A | 7 | 206 | 47602 | 268.0 | 689 | 670 | 175.1 |
| B | 2 | 249 | 228873 | 1586.06 | 677 | 654 | 143.9 |
| B | 4 | 81 | 193555 | 1340.61 | 677 | 654 | 143.9 |
| B | 4 | 171 | 80948 | 558.02 | 677 | 654 | 143.9 |
| C | 0 | 240 | 3057739 | 18214.08 | 602 | 595 | 167.8 |
| C | 15 | 224 | 1777607 | 10587.22 | 602 | 595 | 167.8 |
| C | 1 | 241 | 665042 | 3958.69 | 602 | 595 | 167.8 |
| D | 15 | 125 | 6351819 | 37870.55 | 577 | 552 | 167.7 |
| D | 2 | 62 | 357910 | 2130.81 | 577 | 552 | 167.7 |
| D | 2 | 153 | 134293 | 797.45 | 577 | 552 | 167.7 |
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 |  |