Observation information
- date-obs: 2026-02-20
- time-obs: 06:56:12.526600000
- date-end: 2026-02-20
- time-end: 09:00:27.509700000
- obs_id: A14_049T01_9000006552
- exposure: 1859.05925298
- 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_56260cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56260cztM0_level2_quad_clean.evt
|
| Size (bytes) | 711,662,400 | 81,996,480 |
| Size | 678.7 MB
| 78.2 MB
|
| Events in quadrant A | 13,739,904 | 194,497 |
| Events in quadrant B | 3,591,487 | 685,142 |
| Events in quadrant C | 4,467,887 | 598,310 |
| Events in quadrant D | 4,054,545 | 564,966 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45189 | 1 |
| B | 0 | 14943 | 1 |
| C | 0 | 17504 | 1 |
| D | 0 | 16287 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6305 | 4620 | 73.275178% |
| B | 6305 | 164 | 2.601110% |
| C | 6306 | 334 | 5.296543% |
| D | 6306 | 237 | 3.758325% |
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 | 7455 | 6305 | 4104 | 4104 | 55.05% | 65.09% |  |
| B | 7455 | 6306 | 29 | 29 | 0.39% | 0.46% |  |
| C | 7456 | 6307 | 181 | 181 | 2.43% | 2.87% |  |
| D | 7456 | 6307 | 193 | 193 | 2.59% | 3.06% |  |
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 | 4102806 | 35609.07 | 461 | 450 | 115.2 |
| A | 15 | 32 | 3603602 | 31275.9 | 461 | 450 | 115.2 |
| A | 8 | 176 | 3271438 | 28392.67 | 461 | 450 | 115.2 |
| B | 5 | 185 | 283977 | 1918.47 | 703 | 678 | 147.7 |
| B | 0 | 63 | 154898 | 1044.36 | 703 | 678 | 147.7 |
| B | 1 | 255 | 96621 | 649.72 | 703 | 678 | 147.7 |
| C | 12 | 254 | 690043 | 3653.55 | 684 | 677 | 188.7 |
| C | 15 | 230 | 505913 | 2677.69 | 684 | 677 | 188.7 |
| C | 12 | 252 | 264804 | 1399.84 | 684 | 677 | 188.7 |
| D | 2 | 249 | 665221 | 3400.9 | 689 | 657 | 195.4 |
| D | 8 | 129 | 348981 | 1782.55 | 689 | 657 | 195.4 |
| D | 8 | 160 | 129792 | 660.85 | 689 | 657 | 195.4 |
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 |  |