Observation information
- date-obs: 2026-03-05
- time-obs: 01:59:40.329200000
- date-end: 2026-03-05
- time-end: 03:58:52.015500000
- obs_id: A14_083T05_9000006554
- exposure: 4040.06904638
- 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_56450cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56450cztM0_level2_quad_clean.evt
|
| Size (bytes) | 805,069,440 | 72,204,480 |
| Size | 767.8 MB
| 68.9 MB
|
| Events in quadrant A | 7,621,061 | 437,174 |
| Events in quadrant B | 8,379,893 | 429,473 |
| Events in quadrant C | 3,288,243 | 545,853 |
| Events in quadrant D | 10,044,409 | 351,473 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26805 | 2 |
| B | 0 | 29030 | 1 |
| C | 0 | 14215 | 1 |
| D | 0 | 34059 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6041 | 1727 | 28.587982% |
| B | 6042 | 2239 | 37.057266% |
| C | 6042 | 198 | 3.277061% |
| D | 6042 | 2212 | 36.610394% |
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 | 7150 | 6040 | 1732 | 1732 | 24.22% | 28.68% |  |
| B | 7152 | 6042 | 1922 | 1922 | 26.87% | 31.81% |  |
| C | 7152 | 6043 | 142 | 142 | 1.99% | 2.35% |  |
| D | 7152 | 6042 | 2400 | 2400 | 33.56% | 39.72% |  |
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 | 4166387 | 29659.93 | 570 | 555 | 140.5 |
| A | 12 | 194 | 540985 | 3847.76 | 570 | 555 | 140.5 |
| A | 7 | 64 | 283106 | 2011.71 | 570 | 555 | 140.5 |
| B | 5 | 172 | 4795636 | 40259.49 | 557 | 537 | 119.1 |
| B | 4 | 206 | 1241913 | 10422.55 | 557 | 537 | 119.1 |
| B | 0 | 63 | 31268 | 258.02 | 557 | 537 | 119.1 |
| C | 6 | 223 | 360197 | 2087.88 | 632 | 625 | 172.2 |
| C | 12 | 254 | 247572 | 1433.92 | 632 | 625 | 172.2 |
| C | 12 | 252 | 97774 | 564.1 | 632 | 625 | 172.2 |
| D | 8 | 129 | 3326072 | 21316.48 | 547 | 521 | 156.0 |
| D | 5 | 113 | 3193577 | 20467.2 | 547 | 521 | 156.0 |
| D | 12 | 4 | 450729 | 2885.79 | 547 | 521 | 156.0 |
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 |  |