Observation information
- date-obs: 2026-02-24
- time-obs: 06:09:24.761600000
- date-end: 2026-02-24
- time-end: 08:23:35.744000000
- obs_id: A14_049T01_9000006552
- exposure: 3874.99449158
- 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_56319cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56319cztM0_level2_quad_clean.evt
|
| Size (bytes) | 648,161,280 | 89,187,840 |
| Size | 618.1 MB
| 85.1 MB
|
| Events in quadrant A | 11,275,826 | 389,372 |
| Events in quadrant B | 4,203,242 | 679,940 |
| Events in quadrant C | 3,402,297 | 623,676 |
| Events in quadrant D | 4,597,852 | 546,484 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 37975 | 3 |
| B | 0 | 17150 | 2 |
| C | 0 | 14744 | 2 |
| D | 0 | 18155 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6614 | 3074 | 46.477170% |
| B | 6614 | 368 | 5.563955% |
| C | 6614 | 151 | 2.283036% |
| D | 6614 | 519 | 7.846991% |
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 | 7649 | 6615 | 2809 | 2809 | 36.72% | 42.46% |  |
| B | 7648 | 6614 | 131 | 131 | 1.71% | 1.98% |  |
| C | 7649 | 6615 | 28 | 28 | 0.37% | 0.42% |  |
| D | 7649 | 6615 | 239 | 239 | 3.12% | 3.61% |  |
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 | 11 | 31 | 7575715 | 46540.27 | 655 | 637 | 162.8 |
| A | 4 | 95 | 527869 | 3239.24 | 655 | 637 | 162.8 |
| A | 0 | 8 | 137892 | 843.28 | 655 | 637 | 162.8 |
| B | 1 | 255 | 373597 | 2422.98 | 722 | 698 | 153.9 |
| B | 5 | 185 | 335686 | 2176.65 | 722 | 698 | 153.9 |
| B | 0 | 231 | 253255 | 1641.04 | 722 | 698 | 153.9 |
| C | 12 | 252 | 315267 | 1589.64 | 724 | 713 | 197.9 |
| C | 12 | 254 | 56801 | 283.45 | 724 | 713 | 197.9 |
| C | 13 | 3 | 53896 | 268.77 | 724 | 713 | 197.9 |
| D | 2 | 62 | 565296 | 2876.47 | 688 | 654 | 196.3 |
| D | 6 | 239 | 413582 | 2103.59 | 688 | 654 | 196.3 |
| D | 2 | 249 | 260574 | 1324.12 | 688 | 654 | 196.3 |
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 |  |