Observation information
- date-obs: 2026-03-01
- time-obs: 21:33:39.663800000
- date-end: 2026-03-01
- time-end: 23:40:05.645100000
- obs_id: A14_083T05_9000006554
- exposure: 362.723727167
- sourceid: NGC1556
- observer: Rakshit
- ra_pnt: 64.43679
- dec_pnt: -50.16444
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T05_9000006554_56403cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56403cztM0_level2_quad_clean.evt
|
| Size (bytes) | 868,417,920 | 66,044,160 |
| Size | 828.2 MB
| 63.0 MB
|
| Events in quadrant A | 14,974,708 | 324,584 |
| Events in quadrant B | 6,333,939 | 624,594 |
| Events in quadrant C | 3,311,079 | 591,970 |
| Events in quadrant D | 7,021,542 | 827 |
Level1 data integrity
| 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 SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 48681 | 0 |
| B | 0 | 23299 | 0 |
| C | 0 | 14596 | 0 |
| D | 0 | 25519 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6475 | 4904 | 75.737452% |
| B | 6475 | 1187 | 18.332046% |
| C | 6476 | 58 | 0.895615% |
| D | 6476 | 6476 | 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 | 7585 | 6476 | 4616 | 4616 | 60.86% | 71.28% |  |
| B | 7585 | 6475 | 724 | 724 | 9.55% | 11.18% |  |
| C | 7586 | 6477 | 53 | 53 | 0.70% | 0.82% |  |
| D | 7585 | 6475 | 859 | 859 | 11.32% | 13.27% |  |
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 | 3 | 9893995 | 108604.98 | 361 | 352 | 91.1 |
| A | 4 | 95 | 1447432 | 15884.96 | 361 | 352 | 91.1 |
| A | 12 | 194 | 1182337 | 12974.94 | 361 | 352 | 91.1 |
| B | 4 | 206 | 1920429 | 14366.05 | 633 | 610 | 133.6 |
| B | 5 | 172 | 815423 | 6097.26 | 633 | 610 | 133.6 |
| B | 5 | 185 | 460420 | 3440.76 | 633 | 610 | 133.6 |
| C | 12 | 254 | 297226 | 1616.07 | 668 | 662 | 183.5 |
| C | 12 | 249 | 205667 | 1117.14 | 668 | 662 | 183.5 |
| C | 15 | 230 | 54317 | 292.38 | 668 | 662 | 183.5 |
| D | 8 | 129 | 6943530 | 1252699.3 | 14 | 13 | 5.5 |
| D | 2 | 249 | 5683 | 1022.94 | 14 | 13 | 5.5 |
| D | 8 | 113 | 2546 | 456.99 | 14 | 13 | 5.5 |
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 |  |