Observation information
- date-obs: 2025-05-20
- time-obs: 00:25:39.140300000
- date-end: 2025-05-20
- time-end: 02:28:11.123600000
- obs_id: C09_011T07_9000006470
- exposure: 1989.28755671
- 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_9000006470_52157cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52157cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,069,951,680 | 81,305,280 |
| Size | 1020.4 MB
| 77.5 MB
|
| Events in quadrant A | 5,881,195 | 663,678 |
| Events in quadrant B | 9,193,612 | 560,040 |
| Events in quadrant C | 7,734,070 | 561,377 |
| Events in quadrant D | 16,234,238 | 168,479 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22733 | 1 |
| B | 0 | 32299 | 1 |
| C | 0 | 28156 | 1 |
| D | 0 | 53238 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7292 | 285 | 3.908393% |
| B | 7293 | 2192 | 30.056218% |
| C | 7293 | 1379 | 18.908542% |
| D | 7293 | 5571 | 76.388318% |
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 | 7352 | 7292 | 180 | 180 | 2.45% | 2.47% |  |
| B | 7353 | 7294 | 1597 | 1597 | 21.72% | 21.89% |  |
| C | 7353 | 7294 | 1167 | 1167 | 15.87% | 16.00% |  |
| D | 7352 | 7292 | 5381 | 5381 | 73.19% | 73.79% |  |
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 | 4 | 3 | 1359772 | 7091.87 | 772 | 753 | 191.6 |
| A | 3 | 231 | 481905 | 2510.83 | 772 | 753 | 191.6 |
| A | 3 | 114 | 154054 | 799.98 | 772 | 753 | 191.6 |
| B | 12 | 32 | 3216088 | 22388.59 | 685 | 661 | 143.6 |
| B | 10 | 254 | 1122046 | 7808.05 | 685 | 661 | 143.6 |
| B | 5 | 172 | 1016317 | 7071.88 | 685 | 661 | 143.6 |
| C | 15 | 224 | 2728356 | 13719.28 | 710 | 704 | 198.8 |
| C | 15 | 158 | 450753 | 2263.61 | 710 | 704 | 198.8 |
| C | 12 | 252 | 347922 | 1746.4 | 710 | 704 | 198.8 |
| D | 6 | 42 | 7781567 | 64290.87 | 416 | 396 | 121.0 |
| D | 12 | 17 | 3026411 | 25002.04 | 416 | 396 | 121.0 |
| D | 12 | 3 | 2014674 | 16642.7 | 416 | 396 | 121.0 |
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 |  |