Observation information
- date-obs: 2026-02-25
- time-obs: 04:55:19.579600000
- date-end: 2026-02-25
- time-end: 06:56:02.563000000
- obs_id: A14_049T01_9000006552
- exposure: 230.873135448
- 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_56333cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56333cztM0_level2_quad_clean.evt
|
| Size (bytes) | 844,894,080 | 69,828,480 |
| Size | 805.8 MB
| 66.6 MB
|
| Events in quadrant A | 8,439,280 | 453,217 |
| Events in quadrant B | 3,671,090 | 643,138 |
| Events in quadrant C | 3,773,054 | 568,202 |
| Events in quadrant D | 14,917,155 | 22,498 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 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 | 29316 | 1 |
| B | 0 | 15005 | 1 |
| C | 0 | 15579 | 1 |
| D | 0 | 48479 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6118 | 1762 | 28.800262% |
| B | 6119 | 210 | 3.431933% |
| C | 6119 | 240 | 3.922210% |
| D | 6119 | 5937 | 97.025658% |
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 | 7243 | 6119 | 1492 | 1492 | 20.60% | 24.38% |  |
| B | 7244 | 6120 | 66 | 66 | 0.91% | 1.08% |  |
| C | 7244 | 6120 | 144 | 144 | 1.99% | 2.35% |  |
| D | 7244 | 6119 | 5264 | 5264 | 72.67% | 86.03% |  |
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 | 4 | 95 | 3942145 | 25455.01 | 622 | 606 | 154.8 |
| A | 7 | 64 | 789597 | 5095.41 | 622 | 606 | 154.8 |
| A | 4 | 249 | 356296 | 2297.1 | 622 | 606 | 154.8 |
| B | 3 | 145 | 341496 | 2394.7 | 668 | 644 | 142.3 |
| B | 5 | 185 | 247440 | 1733.9 | 668 | 644 | 142.3 |
| B | 0 | 231 | 105406 | 736.02 | 668 | 644 | 142.3 |
| C | 5 | 250 | 461853 | 2599.82 | 655 | 648 | 177.4 |
| C | 12 | 252 | 224948 | 1264.38 | 655 | 648 | 177.4 |
| C | 5 | 233 | 148812 | 835.2 | 655 | 648 | 177.4 |
| D | 8 | 129 | 13205518 | 201554.5 | 222 | 211 | 65.5 |
| D | 12 | 3 | 343387 | 5237.94 | 222 | 211 | 65.5 |
| D | 2 | 249 | 309694 | 4723.68 | 222 | 211 | 65.5 |
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 |  |