Observation information
- date-obs: 2026-03-04
- time-obs: 03:16:03.220400000
- date-end: 2026-03-04
- time-end: 05:25:51.201300000
- obs_id: A14_083T05_9000006554
- exposure: 6002.99260145
- 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_56436cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56436cztM0_level2_quad_clean.evt
|
| Size (bytes) | 505,825,920 | 95,238,720 |
| Size | 482.4 MB
| 90.8 MB
|
| Events in quadrant A | 4,986,046 | 582,383 |
| Events in quadrant B | 4,486,101 | 662,525 |
| Events in quadrant C | 4,397,444 | 602,460 |
| Events in quadrant D | 4,324,548 | 561,564 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| 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 | 19627 | 2 |
| B | 0 | 18017 | 2 |
| C | 0 | 17722 | 2 |
| D | 0 | 17654 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6813 | 785 | 11.522090% |
| B | 6813 | 612 | 8.982827% |
| C | 6813 | 381 | 5.592250% |
| D | 6813 | 349 | 5.122560% |
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 | 7748 | 6814 | 676 | 676 | 8.72% | 9.92% |  |
| B | 7748 | 6814 | 287 | 287 | 3.70% | 4.21% |  |
| C | 7748 | 6814 | 237 | 237 | 3.06% | 3.48% |  |
| D | 7748 | 6813 | 267 | 267 | 3.45% | 3.92% |  |
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 | 1703656 | 9708.86 | 713 | 695 | 175.4 |
| A | 12 | 194 | 227093 | 1290.73 | 713 | 695 | 175.4 |
| A | 0 | 8 | 170367 | 967.33 | 713 | 695 | 175.4 |
| B | 4 | 206 | 1166954 | 7564.31 | 721 | 695 | 154.2 |
| B | 0 | 231 | 175093 | 1131.14 | 721 | 695 | 154.2 |
| B | 10 | 247 | 77773 | 499.92 | 721 | 695 | 154.2 |
| C | 12 | 252 | 408410 | 2064.46 | 728 | 720 | 197.5 |
| C | 12 | 254 | 396937 | 2006.36 | 728 | 720 | 197.5 |
| C | 1 | 16 | 325382 | 1644.02 | 728 | 720 | 197.5 |
| D | 2 | 31 | 333420 | 1662.54 | 716 | 683 | 200.1 |
| D | 2 | 249 | 217984 | 1085.76 | 716 | 683 | 200.1 |
| D | 8 | 129 | 193591 | 963.88 | 716 | 683 | 200.1 |
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 |  |