Observation information
- date-obs: 2025-07-06
- time-obs: 21:09:49.459800000
- date-end: 2025-07-06
- time-end: 23:23:59.442400000
- obs_id: C09_011T08_9000006482
- exposure: 6845.73898721
- 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_011T08_9000006482_52866cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006482_52866cztM0_level2_quad_clean.evt
|
| Size (bytes) | 747,984,960 | 109,604,160 |
| Size | 713.3 MB
| 104.5 MB
|
| Events in quadrant A | 6,332,935 | 749,552 |
| Events in quadrant B | 6,703,023 | 739,848 |
| Events in quadrant C | 6,006,245 | 673,999 |
| Events in quadrant D | 8,022,603 | 594,944 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24432 | 0 |
| B | 0 | 25632 | 0 |
| C | 0 | 23699 | 0 |
| D | 0 | 29531 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8050 | 427 | 5.304348% |
| B | 8050 | 859 | 10.670807% |
| C | 8051 | 710 | 8.818780% |
| D | 8051 | 1375 | 17.078624% |
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 | 8050 | 8050 | 305 | 305 | 3.79% | 3.79% |  |
| B | 8050 | 8050 | 493 | 493 | 6.12% | 6.12% |  |
| C | 8051 | 8051 | 508 | 508 | 6.31% | 6.31% |  |
| D | 8051 | 8051 | 1098 | 1098 | 13.64% | 13.64% |  |
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 | 9 | 191 | 1335320 | 6264.68 | 844 | 824 | 213.0 |
| A | 4 | 238 | 371160 | 1738.51 | 844 | 824 | 213.0 |
| A | 0 | 8 | 289978 | 1357.41 | 844 | 824 | 213.0 |
| B | 8 | 3 | 2474146 | 14100.15 | 822 | 791 | 175.4 |
| B | 0 | 213 | 359447 | 2044.63 | 822 | 791 | 175.4 |
| B | 4 | 81 | 148751 | 843.49 | 822 | 791 | 175.4 |
| C | 15 | 224 | 898295 | 4018.95 | 805 | 793 | 223.3 |
| C | 2 | 12 | 842553 | 3769.34 | 805 | 793 | 223.3 |
| C | 13 | 3 | 370164 | 1654.02 | 805 | 793 | 223.3 |
| D | 8 | 176 | 2048514 | 9262.47 | 768 | 735 | 221.1 |
| D | 15 | 125 | 1766251 | 7985.74 | 768 | 735 | 221.1 |
| D | 12 | 17 | 233731 | 1053.88 | 768 | 735 | 221.1 |
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 |  |