Observation information
- date-obs: 2026-03-26
- time-obs: 16:23:22.543600000
- date-end: 2026-03-26
- time-end: 18:27:40.523300000
- obs_id: A14_083T05_9000006560
- exposure: 5072.48466372
- 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_9000006560_56771cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56771cztM0_level2_quad_clean.evt
|
| Size (bytes) | 571,155,840 | 91,872,000 |
| Size | 544.7 MB
| 87.6 MB
|
| Events in quadrant A | 4,594,430 | 631,133 |
| Events in quadrant B | 8,567,258 | 515,692 |
| Events in quadrant C | 4,112,329 | 594,241 |
| Events in quadrant D | 3,345,198 | 570,686 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18371 | 1 |
| B | 0 | 30230 | 1 |
| C | 0 | 17268 | 1 |
| D | 0 | 14950 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6738 | 156 | 2.315227% |
| B | 6739 | 1835 | 27.229559% |
| C | 6738 | 212 | 3.146334% |
| D | 6738 | 92 | 1.365390% |
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 | 7458 | 6739 | 104 | 104 | 1.39% | 1.54% |  |
| B | 7459 | 6740 | 1375 | 1375 | 18.43% | 20.40% |  |
| C | 7458 | 6739 | 197 | 197 | 2.64% | 2.92% |  |
| D | 7458 | 6739 | 63 | 63 | 0.84% | 0.93% |  |
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 | 3 | 14 | 1276015 | 7302.29 | 701 | 680 | 174.6 |
| A | 3 | 62 | 369450 | 2111.5 | 701 | 680 | 174.6 |
| A | 10 | 251 | 181296 | 1034.17 | 701 | 680 | 174.6 |
| B | 5 | 172 | 4805583 | 36479.92 | 612 | 592 | 131.7 |
| B | 4 | 206 | 947443 | 7188.58 | 612 | 592 | 131.7 |
| B | 10 | 247 | 108854 | 821.93 | 612 | 592 | 131.7 |
| C | 12 | 249 | 709923 | 3810.6 | 675 | 668 | 186.1 |
| C | 9 | 38 | 370476 | 1986.86 | 675 | 668 | 186.1 |
| C | 14 | 96 | 142171 | 760.25 | 675 | 668 | 186.1 |
| D | 2 | 249 | 390696 | 2031.47 | 676 | 645 | 192.0 |
| D | 2 | 31 | 69328 | 357.72 | 676 | 645 | 192.0 |
| D | 5 | 173 | 55303 | 284.67 | 676 | 645 | 192.0 |
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 |  |