Observation information
- date-obs: 2025-06-22
- time-obs: 20:38:27.211000000
- date-end: 2025-06-22
- time-end: 22:44:34.192900000
- obs_id: C09_011T07_9000006480
- exposure: 3341.84966189
- 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_52658cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52658cztM0_level2_quad_clean.evt
|
| Size (bytes) | 931,688,640 | 74,007,360 |
| Size | 888.5 MB
| 70.6 MB
|
| Events in quadrant A | 3,745,492 | 613,548 |
| Events in quadrant B | 10,496,551 | 438,371 |
| Events in quadrant C | 8,575,770 | 443,466 |
| Events in quadrant D | 11,172,316 | 294,824 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 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 | 15777 | 2 |
| B | 0 | 35660 | 2 |
| C | 0 | 29994 | 2 |
| D | 0 | 37646 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6447 | 133 | 2.062975% |
| B | 6447 | 2514 | 38.994881% |
| C | 6447 | 1820 | 28.230185% |
| D | 6448 | 3378 | 52.388337% |
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 | 7567 | 6448 | 78 | 78 | 1.03% | 1.21% |  |
| B | 7567 | 6447 | 2066 | 2066 | 27.30% | 32.05% |  |
| C | 7567 | 6448 | 1656 | 1656 | 21.88% | 25.68% |  |
| D | 7568 | 6448 | 2759 | 2759 | 36.46% | 42.79% |  |
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 | 3 | 14 | 526666 | 3182.74 | 657 | 640 | 165.3 |
| A | 6 | 233 | 250562 | 1512.16 | 657 | 640 | 165.3 |
| A | 5 | 240 | 117495 | 707.04 | 657 | 640 | 165.3 |
| B | 10 | 128 | 5543956 | 44813.98 | 582 | 561 | 123.7 |
| B | 10 | 254 | 1107669 | 8950.09 | 582 | 561 | 123.7 |
| B | 12 | 32 | 677618 | 5473.47 | 582 | 561 | 123.7 |
| C | 15 | 233 | 4230009 | 26488.71 | 570 | 565 | 159.7 |
| C | 15 | 158 | 1044435 | 6537.68 | 570 | 565 | 159.7 |
| C | 2 | 12 | 398976 | 2495.22 | 570 | 565 | 159.7 |
| D | 6 | 42 | 3098443 | 22904.85 | 467 | 445 | 135.3 |
| D | 8 | 176 | 2954221 | 21838.56 | 467 | 445 | 135.3 |
| D | 1 | 7 | 2321399 | 17159.83 | 467 | 445 | 135.3 |
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 |  |