Observation information
- date-obs: 2025-06-23
- time-obs: 22:39:14.997600000
- date-end: 2025-06-24
- time-end: 00:46:15.981100000
- obs_id: C09_011T07_9000006480
- exposure: 2465.23574758
- 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_9000006480_52674cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52674cztM0_level2_quad_clean.evt
|
| Size (bytes) | 953,432,640 | 81,734,400 |
| Size | 909.3 MB
| 77.9 MB
|
| Events in quadrant A | 4,765,618 | 636,520 |
| Events in quadrant B | 6,293,282 | 642,257 |
| Events in quadrant C | 8,937,076 | 508,208 |
| Events in quadrant D | 14,766,648 | 208,926 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18901 | 1 |
| B | 0 | 23475 | 1 |
| C | 0 | 31357 | 1 |
| D | 0 | 48521 | 7 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6871 | 167 | 2.430505% |
| B | 6872 | 656 | 9.545984% |
| C | 6872 | 1444 | 21.012806% |
| D | 6871 | 4652 | 67.704846% |
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 | 7621 | 6872 | 125 | 125 | 1.64% | 1.82% |  |
| B | 7622 | 6873 | 426 | 426 | 5.59% | 6.20% |  |
| C | 7622 | 6873 | 1583 | 1583 | 20.77% | 23.03% |  |
| D | 7621 | 6872 | 4766 | 4766 | 62.54% | 69.35% |  |
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 | 3 | 14 | 1186588 | 6772.87 | 689 | 673 | 175.1 |
| A | 3 | 62 | 125366 | 712.13 | 689 | 673 | 175.1 |
| A | 4 | 238 | 117602 | 667.79 | 689 | 673 | 175.1 |
| B | 10 | 128 | 2160202 | 15095.9 | 675 | 652 | 143.1 |
| B | 4 | 171 | 295708 | 2062.53 | 675 | 652 | 143.1 |
| B | 4 | 170 | 204574 | 1425.48 | 675 | 652 | 143.1 |
| C | 15 | 248 | 2588801 | 14762.94 | 630 | 625 | 175.3 |
| C | 2 | 239 | 1369967 | 7810.72 | 630 | 625 | 175.3 |
| C | 15 | 224 | 899512 | 5127.24 | 630 | 625 | 175.3 |
| D | 8 | 176 | 9970248 | 83104.3 | 410 | 390 | 120.0 |
| D | 6 | 42 | 2113164 | 17611.14 | 410 | 390 | 120.0 |
| D | 1 | 7 | 298116 | 2481.71 | 410 | 390 | 120.0 |
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 |  |