Observation information
- date-obs: 2025-08-13
- time-obs: 11:44:44.347900000
- date-end: 2025-08-13
- time-end: 13:42:20.017400000
- obs_id: C09_011T09_9000006494
- exposure: 2623.01527351
- 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_011T09_9000006494_53425cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53425cztM0_level2_quad_clean.evt
|
| Size (bytes) | 729,028,800 | 76,155,840 |
| Size | 695.3 MB
| 72.6 MB
|
| Events in quadrant A | 3,768,569 | 581,181 |
| Events in quadrant B | 6,620,294 | 531,085 |
| Events in quadrant C | 12,561,285 | 248,830 |
| Events in quadrant D | 3,573,503 | 527,319 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15297 | 1 |
| B | 0 | 23864 | 13 |
| C | 0 | 41384 | 7 |
| D | 0 | 14748 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5971 | 260 | 4.354380% |
| B | 5969 | 1228 | 20.572960% |
| C | 5971 | 3683 | 61.681460% |
| D | 5971 | 158 | 2.646123% |
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 | 7056 | 5971 | 194 | 194 | 2.75% | 3.25% |  |
| B | 7055 | 5968 | 807 | 807 | 11.44% | 13.52% |  |
| C | 7055 | 5970 | 3686 | 3686 | 52.25% | 61.74% |  |
| D | 7056 | 5971 | 132 | 132 | 1.87% | 2.21% |  |
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 | 15 | 174 | 622794 | 3929.42 | 632 | 614 | 158.3 |
| A | 3 | 63 | 190569 | 1199.67 | 632 | 614 | 158.3 |
| A | 3 | 62 | 151781 | 954.7 | 632 | 614 | 158.3 |
| B | 4 | 171 | 1467095 | 11693.14 | 588 | 568 | 125.4 |
| B | 4 | 206 | 1351128 | 10768.5 | 588 | 568 | 125.4 |
| B | 0 | 171 | 577596 | 4600.85 | 588 | 568 | 125.4 |
| C | 9 | 38 | 5244610 | 44194.91 | 429 | 425 | 118.7 |
| C | 1 | 241 | 2051308 | 17283.64 | 429 | 425 | 118.7 |
| C | 15 | 224 | 2040802 | 17195.1 | 429 | 425 | 118.7 |
| D | 3 | 12 | 255817 | 1438.28 | 618 | 590 | 177.5 |
| D | 2 | 153 | 174620 | 980.71 | 618 | 590 | 177.5 |
| D | 12 | 1 | 120546 | 675.99 | 618 | 590 | 177.5 |
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 |  |