Observation information
- date-obs: 2026-02-25
- time-obs: 11:49:10.526000000
- date-end: 2026-02-25
- time-end: 13:56:19.509800000
- obs_id: A14_049T01_9000006552
- exposure: 1179.70873022
- 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_56337cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56337cztM0_level2_quad_clean.evt
|
| Size (bytes) | 846,930,240 | 91,005,120 |
| Size | 807.7 MB
| 86.8 MB
|
| Events in quadrant A | 5,183,112 | 707,797 |
| Events in quadrant B | 4,835,268 | 765,487 |
| Events in quadrant C | 5,108,164 | 681,199 |
| Events in quadrant D | 15,629,654 | 65,843 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20721 | 0 |
| B | 0 | 19737 | 0 |
| C | 0 | 20531 | 0 |
| D | 0 | 51774 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7629 | 291 | 3.814392% |
| B | 7630 | 306 | 4.010485% |
| C | 7630 | 308 | 4.036697% |
| D | 7630 | 7630 | 100.000000% |
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 | 7629 | 7629 | 260 | 260 | 3.41% | 3.41% |  |
| B | 7630 | 7630 | 186 | 186 | 2.44% | 2.44% |  |
| C | 7630 | 7630 | 266 | 266 | 3.49% | 3.49% |  |
| D | 7629 | 7629 | 4790 | 4790 | 62.79% | 62.79% |  |
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 | 0 | 143 | 548566 | 2729.95 | 810 | 789 | 200.7 |
| A | 0 | 8 | 399425 | 1986.68 | 810 | 789 | 200.7 |
| A | 3 | 14 | 363281 | 1806.54 | 810 | 789 | 200.7 |
| B | 5 | 185 | 1002361 | 5810.92 | 802 | 772 | 172.4 |
| B | 0 | 231 | 261294 | 1511.47 | 802 | 772 | 172.4 |
| B | 0 | 183 | 122480 | 706.11 | 802 | 772 | 172.4 |
| C | 12 | 254 | 881867 | 4123.4 | 779 | 774 | 213.7 |
| C | 5 | 250 | 309066 | 1442.77 | 779 | 774 | 213.7 |
| C | 15 | 198 | 302846 | 1413.66 | 779 | 774 | 213.7 |
| D | 8 | 129 | 14775302 | 521731.89 | 92 | 87 | 28.3 |
| D | 6 | 239 | 138322 | 4881.26 | 92 | 87 | 28.3 |
| D | 2 | 62 | 109535 | 3864.75 | 92 | 87 | 28.3 |
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 |  |