Observation information
- date-obs: 2025-06-16
- time-obs: 05:07:18.470900000
- date-end: 2025-06-16
- time-end: 07:06:41.456500000
- obs_id: C09_011T06_9000006478
- exposure: 4286.8744452
- 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_52559cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52559cztM0_level2_quad_clean.evt
|
| Size (bytes) | 940,135,680 | 85,273,920 |
| Size | 896.6 MB
| 81.3 MB
|
| Events in quadrant A | 3,593,521 | 664,746 |
| Events in quadrant B | 8,167,869 | 603,033 |
| Events in quadrant C | 10,592,557 | 458,009 |
| Events in quadrant D | 11,893,646 | 357,220 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16235 | 0 |
| B | 0 | 29221 | 2 |
| C | 0 | 36449 | 0 |
| D | 0 | 40286 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7164 | 106 | 1.479620% |
| B | 7163 | 1344 | 18.763088% |
| C | 7163 | 2364 | 33.002932% |
| D | 7163 | 3123 | 43.599051% |
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 | 7164 | 7164 | 70 | 70 | 0.98% | 0.98% |  |
| B | 7163 | 7163 | 960 | 960 | 13.40% | 13.40% |  |
| C | 7163 | 7163 | 2084 | 2084 | 29.09% | 29.09% |  |
| D | 7162 | 7162 | 2647 | 2647 | 36.96% | 36.96% |  |
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 | 177622 | 947.26 | 747 | 727 | 186.7 |
| A | 4 | 205 | 101572 | 540.02 | 747 | 727 | 186.7 |
| A | 15 | 174 | 94334 | 501.26 | 747 | 727 | 186.7 |
| B | 10 | 44 | 2960207 | 20340.04 | 685 | 661 | 145.5 |
| B | 10 | 254 | 1204129 | 8271.06 | 685 | 661 | 145.5 |
| B | 4 | 170 | 722552 | 4961.33 | 685 | 661 | 145.5 |
| C | 15 | 248 | 5438658 | 31425.4 | 629 | 623 | 173.0 |
| C | 2 | 12 | 1268806 | 7328.6 | 629 | 623 | 173.0 |
| C | 13 | 3 | 703657 | 4062.7 | 629 | 623 | 173.0 |
| D | 6 | 42 | 4443305 | 28602.54 | 542 | 517 | 155.3 |
| D | 2 | 62 | 1750450 | 11266.02 | 542 | 517 | 155.3 |
| D | 8 | 176 | 1305740 | 8402.99 | 542 | 517 | 155.3 |
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 |  |