Observation information
- date-obs: 2025-08-01
- time-obs: 18:25:07.377100000
- date-end: 2025-08-01
- time-end: 20:30:51.360400000
- obs_id: C09_011T08_9000006492
- exposure: 4763.62661898
- 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_9000006492_53251cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53251cztM0_level2_quad_clean.evt
|
| Size (bytes) | 584,015,040 | 90,809,280 |
| Size | 557.0 MB
| 86.6 MB
|
| Events in quadrant A | 4,804,666 | 602,754 |
| Events in quadrant B | 4,088,906 | 671,895 |
| Events in quadrant C | 8,353,624 | 464,763 |
| Events in quadrant D | 3,883,865 | 571,429 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18549 | 2 |
| B | 0 | 16343 | 2 |
| C | 0 | 29111 | 2 |
| D | 0 | 15718 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6283 | 421 | 6.700621% |
| B | 6283 | 152 | 2.419226% |
| C | 6283 | 1781 | 28.346331% |
| D | 6283 | 100 | 1.591596% |
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 | 7473 | 6284 | 390 | 390 | 5.22% | 6.21% |  |
| B | 7473 | 6284 | 88 | 88 | 1.18% | 1.40% |  |
| C | 7472 | 6282 | 1527 | 1527 | 20.44% | 24.31% |  |
| D | 7473 | 6284 | 93 | 93 | 1.24% | 1.48% |  |
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 | 7 | 206 | 571501 | 3450.19 | 659 | 644 | 165.5 |
| A | 12 | 115 | 332720 | 2007.03 | 659 | 644 | 165.5 |
| A | 3 | 62 | 251636 | 1516.97 | 659 | 644 | 165.5 |
| B | 12 | 33 | 517787 | 3663.66 | 666 | 643 | 141.2 |
| B | 2 | 249 | 244269 | 1725.94 | 666 | 643 | 141.2 |
| B | 4 | 81 | 194934 | 1376.43 | 666 | 643 | 141.2 |
| C | 15 | 224 | 3515273 | 22044.53 | 583 | 578 | 159.4 |
| C | 15 | 165 | 753474 | 4722.24 | 583 | 578 | 159.4 |
| C | 4 | 5 | 751757 | 4711.47 | 583 | 578 | 159.4 |
| D | 6 | 239 | 176161 | 935.7 | 657 | 625 | 187.6 |
| D | 9 | 19 | 128140 | 679.72 | 657 | 625 | 187.6 |
| D | 12 | 128 | 106374 | 563.7 | 657 | 625 | 187.6 |
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 |  |