Observation information
- date-obs: 2026-02-23
- time-obs: 21:38:26.835200000
- date-end: 2026-02-23
- time-end: 23:48:08.816200000
- obs_id: A14_049T01_9000006552
- exposure: 5339.6048618
- sourceid: NGC 1487
- observer: amrutha
- ra_pnt: 58.94208
- dec_pnt: -42.36806
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_049T01_9000006552_56313cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56313cztM0_level2_quad_clean.evt
|
| Size (bytes) | 640,198,080 | 93,384,000 |
| Size | 610.5 MB
| 89.1 MB
|
| Events in quadrant A | 10,422,339 | 499,403 |
| Events in quadrant B | 4,706,826 | 662,564 |
| Events in quadrant C | 3,543,857 | 611,226 |
| Events in quadrant D | 4,489,686 | 572,570 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 35784 | 2 |
| B | 0 | 18800 | 1 |
| C | 0 | 15752 | 1 |
| D | 0 | 18234 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6911 | 1824 | 26.392707% |
| B | 6911 | 396 | 5.729996% |
| C | 6912 | 104 | 1.504630% |
| D | 6912 | 166 | 2.401620% |
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 | 7781 | 6912 | 1760 | 1760 | 22.62% | 25.46% |  |
| B | 7781 | 6912 | 316 | 316 | 4.06% | 4.57% |  |
| C | 7782 | 6913 | 71 | 71 | 0.91% | 1.03% |  |
| D | 7782 | 6913 | 167 | 167 | 2.15% | 2.42% |  |
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 | 15 | 32 | 3202715 | 19935.64 | 637 | 621 | 160.6 |
| A | 4 | 95 | 2705649 | 16841.0 | 637 | 621 | 160.6 |
| A | 12 | 115 | 625573 | 3890.83 | 637 | 621 | 160.6 |
| B | 5 | 185 | 821318 | 5521.58 | 700 | 676 | 148.6 |
| B | 5 | 172 | 572295 | 3846.06 | 700 | 676 | 148.6 |
| B | 0 | 231 | 204248 | 1369.71 | 700 | 676 | 148.6 |
| C | 12 | 252 | 398220 | 2072.8 | 691 | 685 | 191.8 |
| C | 12 | 249 | 133893 | 694.56 | 691 | 685 | 191.8 |
| C | 6 | 223 | 80692 | 417.17 | 691 | 685 | 191.8 |
| D | 8 | 160 | 587491 | 3015.39 | 682 | 650 | 194.6 |
| D | 2 | 249 | 556558 | 2856.44 | 682 | 650 | 194.6 |
| D | 8 | 240 | 145241 | 742.96 | 682 | 650 | 194.6 |
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 |  |