Observation information
- date-obs: 2026-02-18
- time-obs: 04:14:17.939600000
- date-end: 2026-02-18
- time-end: 06:43:59.918800000
- obs_id: A14_083T04_9000006550
- exposure: 2308.19021297
- 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_56229cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56229cztM0_level2_quad_clean.evt
|
| Size (bytes) | 760,291,200 | 87,912,000 |
| Size | 725.1 MB
| 83.8 MB
|
| Events in quadrant A | 15,054,159 | 234,027 |
| Events in quadrant B | 4,291,599 | 723,225 |
| Events in quadrant C | 3,457,945 | 647,145 |
| Events in quadrant D | 4,806,574 | 578,547 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 21 | 0 |
| D | 0 | 21 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 49450 | 4 |
| B | 0 | 17461 | 2 |
| C | 0 | 15253 | 2 |
| D | 0 | 19048 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6871 | 4804 | 69.917043% |
| B | 6872 | 253 | 3.681607% |
| C | 6872 | 146 | 2.124563% |
| D | 6872 | 482 | 7.013970% |
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 | 8981 | 6873 | 4657 | 4657 | 51.85% | 67.76% |  |
| B | 8982 | 6874 | 53 | 53 | 0.59% | 0.77% |  |
| C | 8982 | 6874 | 42 | 42 | 0.47% | 0.61% |  |
| D | 8982 | 6874 | 412 | 412 | 4.59% | 5.99% |  |
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 | 5446275 | 44218.0 | 489 | 476 | 123.2 |
| A | 15 | 32 | 4602656 | 37368.11 | 489 | 476 | 123.2 |
| A | 8 | 176 | 2209904 | 17939.79 | 489 | 476 | 123.2 |
| B | 4 | 171 | 762196 | 4794.67 | 750 | 724 | 158.8 |
| B | 4 | 206 | 171367 | 1074.47 | 750 | 724 | 158.8 |
| B | 10 | 59 | 132217 | 827.96 | 750 | 724 | 158.8 |
| C | 12 | 252 | 226906 | 1117.97 | 744 | 736 | 202.3 |
| C | 6 | 223 | 156904 | 771.95 | 744 | 736 | 202.3 |
| C | 12 | 254 | 89550 | 439.01 | 744 | 736 | 202.3 |
| D | 8 | 129 | 1095428 | 5388.34 | 721 | 688 | 203.2 |
| D | 2 | 249 | 294306 | 1445.19 | 721 | 688 | 203.2 |
| D | 3 | 12 | 147999 | 725.07 | 721 | 688 | 203.2 |
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 |  |