Observation information
- date-obs: 2026-02-26
- time-obs: 10:25:36.343400000
- date-end: 2026-02-26
- time-end: 12:26:30.327500000
- obs_id: A14_083T05_9000006554
- exposure: 2028.22527307
- 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_56351cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56351cztM0_level2_quad_clean.evt
|
| Size (bytes) | 930,640,320 | 85,959,360 |
| Size | 887.5 MB
| 82.0 MB
|
| Events in quadrant A | 6,168,319 | 639,185 |
| Events in quadrant B | 4,704,292 | 718,137 |
| Events in quadrant C | 7,825,441 | 559,883 |
| Events in quadrant D | 15,189,587 | 180,007 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23419 | 2 |
| B | 0 | 18970 | 0 |
| C | 0 | 28298 | 0 |
| D | 0 | 50162 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7253 | 711 | 9.802840% |
| B | 7254 | 399 | 5.500414% |
| C | 7254 | 1479 | 20.388751% |
| D | 7254 | 5464 | 75.323959% |
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 | 7253 | 7253 | 607 | 607 | 8.37% | 8.37% |  |
| B | 7254 | 7254 | 240 | 240 | 3.31% | 3.31% |  |
| C | 7254 | 7254 | 1221 | 1221 | 16.83% | 16.83% |  |
| D | 7254 | 7254 | 4710 | 4710 | 64.93% | 64.93% |  |
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 | 249 | 1297924 | 7008.88 | 747 | 727 | 185.1 |
| A | 4 | 95 | 709386 | 3828.95 | 747 | 727 | 185.1 |
| A | 8 | 25 | 266662 | 1436.87 | 747 | 727 | 185.1 |
| B | 5 | 185 | 741886 | 4510.12 | 774 | 745 | 164.3 |
| B | 4 | 206 | 180331 | 1092.85 | 774 | 745 | 164.3 |
| B | 4 | 171 | 141618 | 857.27 | 774 | 745 | 164.3 |
| C | 12 | 254 | 2773007 | 14275.77 | 705 | 699 | 194.2 |
| C | 15 | 230 | 968572 | 4983.98 | 705 | 699 | 194.2 |
| C | 13 | 3 | 548703 | 2821.9 | 705 | 699 | 194.2 |
| D | 8 | 129 | 7346854 | 53621.98 | 466 | 441 | 137.0 |
| D | 2 | 62 | 4840618 | 35328.79 | 466 | 441 | 137.0 |
| D | 6 | 239 | 388153 | 2829.93 | 466 | 441 | 137.0 |
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 |  |