Observation information
- date-obs: 2026-02-17
- time-obs: 04:20:36.144400000
- date-end: 2026-02-17
- time-end: 06:28:13.125600000
- obs_id: A14_083T04_9000006550
- exposure: 3013.62503952
- sourceid: NGC1522
- observer: Rakshit
- ra_pnt: 61.533
- dec_pnt: -52.66842
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T04_9000006550_56214cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56214cztM0_level2_quad_clean.evt
|
| Size (bytes) | 698,667,840 | 86,250,240 |
| Size | 666.3 MB
| 82.3 MB
|
| Events in quadrant A | 12,459,030 | 292,650 |
| Events in quadrant B | 3,499,416 | 701,567 |
| Events in quadrant C | 4,553,094 | 604,192 |
| Events in quadrant D | 4,837,588 | 551,665 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 41441 | 18 |
| B | 0 | 15015 | 3 |
| C | 0 | 18170 | 2 |
| D | 0 | 19088 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6610 | 3687 | 55.779123% |
| B | 6611 | 137 | 2.072304% |
| C | 6612 | 374 | 5.656382% |
| D | 6612 | 521 | 7.879613% |
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 | 7657 | 6610 | 3552 | 3552 | 46.39% | 53.74% |  |
| B | 7656 | 6611 | 17 | 17 | 0.22% | 0.26% |  |
| C | 7657 | 6612 | 288 | 288 | 3.76% | 4.36% |  |
| D | 7657 | 6612 | 493 | 493 | 6.44% | 7.46% |  |
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 | 12 | 115 | 9000922 | 75886.92 | 473 | 461 | 118.6 |
| A | 8 | 176 | 906125 | 7636.06 | 473 | 461 | 118.6 |
| A | 15 | 32 | 206755 | 1739.36 | 473 | 461 | 118.6 |
| B | 1 | 255 | 275928 | 1822.23 | 715 | 690 | 151.0 |
| B | 0 | 171 | 127268 | 838.02 | 715 | 690 | 151.0 |
| B | 0 | 63 | 60031 | 392.87 | 715 | 690 | 151.0 |
| C | 12 | 254 | 1329347 | 6887.89 | 697 | 688 | 192.9 |
| C | 12 | 252 | 335220 | 1734.24 | 697 | 688 | 192.9 |
| C | 6 | 223 | 71567 | 367.44 | 697 | 688 | 192.9 |
| D | 6 | 239 | 1371551 | 7020.04 | 688 | 655 | 195.3 |
| D | 4 | 230 | 195641 | 998.48 | 688 | 655 | 195.3 |
| D | 13 | 153 | 146418 | 746.42 | 688 | 655 | 195.3 |
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 |  |