Observation information
- date-obs: 2025-07-06
- time-obs: 19:31:59.472600000
- date-end: 2025-07-06
- time-end: 21:39:13.455900000
- obs_id: C09_011T08_9000006482
- exposure: 5418.63371873
- 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_52865cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006482_52865cztM0_level2_quad_clean.evt
|
| Size (bytes) | 861,148,800 | 95,973,120 |
| Size | 821.3 MB
| 91.5 MB
|
| Events in quadrant A | 5,681,369 | 713,612 |
| Events in quadrant B | 10,656,727 | 538,232 |
| Events in quadrant C | 4,941,361 | 653,044 |
| Events in quadrant D | 10,007,048 | 469,755 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22380 | 0 |
| B | 0 | 36994 | 0 |
| C | 0 | 20448 | 0 |
| D | 0 | 34998 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7634 | 304 | 3.982185% |
| B | 7634 | 2525 | 33.075714% |
| C | 7634 | 460 | 6.025675% |
| D | 7634 | 2402 | 31.464501% |
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 | 7634 | 7634 | 259 | 259 | 3.39% | 3.39% |  |
| B | 7634 | 7634 | 1897 | 1897 | 24.85% | 24.85% |  |
| C | 7634 | 7634 | 352 | 352 | 4.61% | 4.61% |  |
| D | 7634 | 7634 | 1997 | 1997 | 26.16% | 26.16% |  |
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 | 1041063 | 5141.74 | 794 | 772 | 202.3 |
| A | 4 | 238 | 405154 | 1998.7 | 794 | 772 | 202.3 |
| A | 5 | 243 | 240750 | 1186.12 | 794 | 772 | 202.3 |
| B | 8 | 3 | 6892746 | 46547.72 | 691 | 666 | 148.1 |
| B | 0 | 213 | 309547 | 2086.12 | 691 | 666 | 148.1 |
| B | 10 | 254 | 179188 | 1205.7 | 691 | 666 | 148.1 |
| C | 15 | 224 | 1095650 | 5223.61 | 759 | 753 | 209.6 |
| C | 2 | 12 | 277662 | 1321.1 | 759 | 753 | 209.6 |
| C | 7 | 80 | 213113 | 1013.14 | 759 | 753 | 209.6 |
| D | 15 | 125 | 3553353 | 19094.78 | 643 | 614 | 186.1 |
| D | 8 | 176 | 1597055 | 8580.33 | 643 | 614 | 186.1 |
| D | 2 | 37 | 735813 | 3951.45 | 643 | 614 | 186.1 |
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 |  |