Observation information
- date-obs: 2026-03-25
- time-obs: 19:32:04.733000000
- date-end: 2026-03-25
- time-end: 21:38:04.701700000
- obs_id: A14_083T05_9000006560
- exposure: 6804.46470237
- 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_56758cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56758cztM0_level2_quad_clean.evt
|
| Size (bytes) | 567,097,920 | 105,105,600 |
| Size | 540.8 MB
| 100.2 MB
|
| Events in quadrant A | 4,426,949 | 698,663 |
| Events in quadrant B | 6,347,207 | 708,344 |
| Events in quadrant C | 5,978,623 | 612,488 |
| Events in quadrant D | 3,652,453 | 636,594 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18490 | 0 |
| B | 0 | 24070 | 0 |
| C | 0 | 23268 | 0 |
| D | 0 | 16667 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7560 | 195 | 2.579365% |
| B | 7560 | 735 | 9.722222% |
| C | 7560 | 795 | 10.515873% |
| D | 7560 | 44 | 0.582011% |
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 | 7560 | 7560 | 129 | 129 | 1.71% | 1.71% |  |
| B | 7560 | 7560 | 364 | 364 | 4.81% | 4.81% |  |
| C | 7560 | 7560 | 642 | 642 | 8.49% | 8.49% |  |
| D | 7560 | 7560 | 64 | 64 | 0.85% | 0.85% |  |
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 | 551855 | 2797.58 | 794 | 774 | 197.0 |
| A | 3 | 62 | 399724 | 2025.28 | 794 | 774 | 197.0 |
| A | 10 | 251 | 209524 | 1059.73 | 794 | 774 | 197.0 |
| B | 4 | 206 | 1190399 | 7050.2 | 774 | 743 | 168.7 |
| B | 5 | 185 | 1186064 | 7024.51 | 774 | 743 | 168.7 |
| B | 8 | 128 | 530750 | 3140.96 | 774 | 743 | 168.7 |
| C | 14 | 96 | 942156 | 4750.97 | 730 | 724 | 198.2 |
| C | 15 | 230 | 938937 | 4734.73 | 730 | 724 | 198.2 |
| C | 13 | 3 | 903370 | 4555.24 | 730 | 724 | 198.2 |
| D | 2 | 252 | 301257 | 1369.54 | 773 | 736 | 219.4 |
| D | 5 | 173 | 78853 | 356.0 | 773 | 736 | 219.4 |
| D | 2 | 236 | 64811 | 292.0 | 773 | 736 | 219.4 |
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 |  |