Observation information
- date-obs: 2026-02-24
- time-obs: 13:20:56.706000000
- date-end: 2026-02-24
- time-end: 15:23:27.687600000
- obs_id: A14_049T01_9000006552
- exposure: 283.533397198
- sourceid: NGC 1487
- observer: amrutha
- ra_pnt: 58.94208
- dec_pnt: -42.36806
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_049T01_9000006552_56323cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56323cztM0_level2_quad_clean.evt
|
| Size (bytes) | 983,995,200 | 76,158,720 |
| Size | 938.4 MB
| 72.6 MB
|
| Events in quadrant A | 9,032,150 | 536,145 |
| Events in quadrant B | 4,965,124 | 697,412 |
| Events in quadrant C | 7,592,252 | 536,638 |
| Events in quadrant D | 14,264,011 | 23,537 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 31897 | 2 |
| B | 0 | 19932 | 0 |
| C | 0 | 27911 | 0 |
| D | 0 | 47493 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7350 | 1855 | 25.238095% |
| B | 7350 | 542 | 7.374150% |
| C | 7351 | 1521 | 20.691062% |
| D | 7351 | 7135 | 97.061624% |
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 | 7350 | 7350 | 1635 | 1635 | 22.24% | 22.24% |  |
| B | 7350 | 7350 | 334 | 334 | 4.54% | 4.54% |  |
| C | 7351 | 7351 | 1205 | 1205 | 16.39% | 16.39% |  |
| D | 7350 | 7350 | 4175 | 4175 | 56.80% | 56.80% |  |
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 | 11 | 31 | 3039329 | 17219.99 | 703 | 686 | 176.5 |
| A | 7 | 64 | 723697 | 4097.3 | 703 | 686 | 176.5 |
| A | 0 | 8 | 707481 | 4005.41 | 703 | 686 | 176.5 |
| B | 5 | 172 | 736873 | 4565.18 | 750 | 722 | 161.3 |
| B | 0 | 231 | 533514 | 3304.07 | 750 | 722 | 161.3 |
| B | 5 | 185 | 352673 | 2182.6 | 750 | 722 | 161.3 |
| C | 15 | 198 | 3105025 | 16366.63 | 688 | 683 | 189.7 |
| C | 15 | 148 | 636917 | 3354.34 | 688 | 683 | 189.7 |
| C | 12 | 252 | 441089 | 2321.9 | 688 | 683 | 189.7 |
| D | 8 | 129 | 13465404 | 389770.41 | 116 | 110 | 34.5 |
| D | 2 | 249 | 101650 | 2939.21 | 116 | 110 | 34.5 |
| D | 6 | 239 | 67133 | 1940.07 | 116 | 110 | 34.5 |
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 |  |