Observation information
- date-obs: 2025-07-31
- time-obs: 02:41:01.686800000
- date-end: 2025-07-31
- time-end: 04:40:52.670200000
- obs_id: C09_011T06_9000006490
- exposure: 5502.17853194
- 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_9000006490_53226cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53226cztM0_level2_quad_clean.evt
|
| Size (bytes) | 531,253,440 | 89,640,000 |
| Size | 506.6 MB
| 85.5 MB
|
| Events in quadrant A | 3,287,509 | 606,064 |
| Events in quadrant B | 3,779,578 | 629,426 |
| Events in quadrant C | 7,236,863 | 494,455 |
| Events in quadrant D | 4,859,046 | 532,609 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14858 | 1 |
| B | 0 | 16020 | 1 |
| C | 0 | 26082 | 1 |
| D | 0 | 19146 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6471 | 71 | 1.097203% |
| B | 6472 | 278 | 4.295426% |
| C | 6472 | 1109 | 17.135352% |
| D | 6472 | 346 | 5.346106% |
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 | 7191 | 6472 | 25 | 25 | 0.35% | 0.39% |  |
| B | 7192 | 6473 | 163 | 163 | 2.27% | 2.52% |  |
| C | 7192 | 6473 | 949 | 949 | 13.20% | 14.66% |  |
| D | 7192 | 6473 | 299 | 299 | 4.16% | 4.62% |  |
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 | 62 | 187732 | 1150.17 | 654 | 637 | 162.7 |
| A | 3 | 27 | 98272 | 600.21 | 654 | 637 | 162.7 |
| A | 12 | 80 | 87337 | 532.99 | 654 | 637 | 162.7 |
| B | 2 | 249 | 878899 | 6407.71 | 643 | 624 | 137.1 |
| B | 4 | 81 | 128666 | 934.17 | 643 | 624 | 137.1 |
| B | 8 | 128 | 54737 | 394.8 | 643 | 624 | 137.1 |
| C | 15 | 224 | 1460104 | 9023.17 | 585 | 579 | 161.8 |
| C | 15 | 165 | 1387342 | 8573.34 | 585 | 579 | 161.8 |
| C | 7 | 80 | 742258 | 4585.26 | 585 | 579 | 161.8 |
| D | 6 | 239 | 557596 | 3187.68 | 617 | 592 | 174.7 |
| D | 11 | 176 | 450628 | 2575.51 | 617 | 592 | 174.7 |
| D | 15 | 125 | 404496 | 2311.5 | 617 | 592 | 174.7 |
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 |  |