Observation information
- date-obs: 2026-02-28
- time-obs: 00:36:13.322100000
- date-end: 2026-02-28
- time-end: 02:35:43.001100000
- obs_id: A14_083T05_9000006554
- exposure: 1464.91760296
- 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_56375cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56375cztM0_level2_quad_clean.evt
|
| Size (bytes) | 696,752,640 | 74,439,360 |
| Size | 664.5 MB
| 71.0 MB
|
| Events in quadrant A | 14,072,962 | 146,433 |
| Events in quadrant B | 3,059,615 | 638,042 |
| Events in quadrant C | 4,160,953 | 534,263 |
| Events in quadrant D | 4,029,722 | 514,571 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45817 | 1 |
| B | 0 | 13188 | 1 |
| C | 0 | 16635 | 1 |
| D | 0 | 16276 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6030 | 4764 | 79.004975% |
| B | 6030 | 78 | 1.293532% |
| C | 6031 | 394 | 6.532913% |
| D | 6031 | 182 | 3.017742% |
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 | 7169 | 6029 | 4698 | 4698 | 65.53% | 77.92% |  |
| B | 7169 | 6029 | 20 | 20 | 0.28% | 0.33% |  |
| C | 7170 | 6030 | 348 | 348 | 4.85% | 5.77% |  |
| D | 7170 | 6030 | 160 | 160 | 2.23% | 2.65% |  |
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 | 7 | 64 | 5644082 | 61091.55 | 364 | 354 | 92.4 |
| A | 12 | 3 | 4544836 | 49192.56 | 364 | 354 | 92.4 |
| A | 4 | 95 | 1557807 | 16858.93 | 364 | 354 | 92.4 |
| B | 5 | 172 | 163280 | 1181.46 | 647 | 625 | 137.7 |
| B | 3 | 145 | 54210 | 389.22 | 647 | 625 | 137.7 |
| B | 4 | 21 | 53281 | 382.47 | 647 | 625 | 137.7 |
| C | 15 | 230 | 940604 | 5547.44 | 618 | 614 | 169.4 |
| C | 12 | 254 | 276627 | 1628.92 | 618 | 614 | 169.4 |
| C | 13 | 3 | 232934 | 1371.06 | 618 | 614 | 169.4 |
| D | 8 | 129 | 698223 | 3887.48 | 626 | 596 | 179.5 |
| D | 2 | 249 | 565481 | 3147.78 | 626 | 596 | 179.5 |
| D | 2 | 31 | 116279 | 644.64 | 626 | 596 | 179.5 |
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 |  |