Observation information
- date-obs: 2026-02-22
- time-obs: 11:00:29.110500000
- date-end: 2026-02-22
- time-end: 13:03:26.094900000
- obs_id: A14_049T01_9000006552
- exposure: 755.249412656
- 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_56292cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56292cztM0_level2_quad_clean.evt
|
| Size (bytes) | 799,914,240 | 82,183,680 |
| Size | 762.9 MB
| 78.4 MB
|
| Events in quadrant A | 16,679,419 | 72,544 |
| Events in quadrant B | 4,440,494 | 692,889 |
| Events in quadrant C | 3,580,952 | 640,606 |
| Events in quadrant D | 4,367,759 | 596,619 |
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 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 54342 | 1 |
| B | 0 | 18171 | 1 |
| C | 0 | 15853 | 1 |
| D | 0 | 17872 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6967 | 6333 | 90.899957% |
| B | 6967 | 405 | 5.813119% |
| C | 6968 | 84 | 1.205511% |
| D | 6968 | 192 | 2.755454% |
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 | 7376 | 6966 | 6079 | 6079 | 82.42% | 87.27% |  |
| B | 7377 | 6967 | 215 | 215 | 2.91% | 3.09% |  |
| C | 7378 | 6968 | 54 | 54 | 0.73% | 0.77% |  |
| D | 7378 | 6968 | 160 | 160 | 2.17% | 2.30% |  |
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 | 32 | 10516107 | 117208.51 | 351 | 342 | 89.7 |
| A | 4 | 95 | 2319219 | 25846.16 | 351 | 342 | 89.7 |
| A | 8 | 25 | 677735 | 7550.21 | 351 | 342 | 89.7 |
| B | 5 | 185 | 725440 | 4591.43 | 735 | 707 | 157.8 |
| B | 5 | 172 | 201638 | 1272.97 | 735 | 707 | 157.8 |
| B | 10 | 247 | 160902 | 1014.89 | 735 | 707 | 157.8 |
| C | 12 | 252 | 359624 | 1772.23 | 728 | 720 | 202.5 |
| C | 5 | 250 | 151428 | 744.18 | 728 | 720 | 202.5 |
| C | 12 | 249 | 71172 | 347.89 | 728 | 720 | 202.5 |
| D | 5 | 32 | 501922 | 2428.54 | 729 | 697 | 206.4 |
| D | 2 | 249 | 380827 | 1841.81 | 729 | 697 | 206.4 |
| D | 8 | 129 | 229111 | 1106.71 | 729 | 697 | 206.4 |
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 |  |