Observation information
- date-obs: 2026-06-29
- time-obs: 17:59:30.737900000
- date-end: 2026-06-29
- time-end: 20:22:09.716800000
- obs_id: A14_042T02_9000006586
- exposure: 7964.31595206
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58184cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58184cztM0_level2_quad_clean.evt
|
| Size (bytes) | 686,448,000 | 123,716,160 |
| Size | 654.6 MB
| 118.0 MB
|
| Events in quadrant A | 3,860,676 | 829,743 |
| Events in quadrant B | 6,915,790 | 839,645 |
| Events in quadrant C | 4,015,021 | 784,987 |
| Events in quadrant D | 9,956,210 | 697,230 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 170 | 0 |
| B | 0 | 170 | 0 |
| C | 0 | 170 | 0 |
| D | 0 | 170 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17818 | 0 |
| B | 0 | 26439 | 0 |
| C | 0 | 18479 | 0 |
| D | 0 | 35579 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8559 | 42 | 0.490712% |
| B | 8560 | 638 | 7.453271% |
| C | 8560 | 48 | 0.560748% |
| D | 8560 | 704 | 8.224299% |
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 | 8559 | 8559 | 16 | 16 | 0.19% | 0.19% |  |
| B | 8560 | 8560 | 323 | 323 | 3.77% | 3.77% |  |
| C | 8560 | 8560 | 39 | 39 | 0.46% | 0.46% |  |
| D | 8560 | 8560 | 671 | 671 | 7.84% | 7.84% |  |
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 | 245 | 61999 | 257.26 | 965 | 938 | 237.3 |
| A | 4 | 3 | 34193 | 140.11 | 965 | 938 | 237.3 |
| A | 11 | 3 | 20613 | 82.89 | 965 | 938 | 237.3 |
| B | 10 | 128 | 1880479 | 9429.3 | 924 | 890 | 199.3 |
| B | 2 | 249 | 869051 | 4355.29 | 924 | 890 | 199.3 |
| B | 4 | 201 | 154069 | 768.45 | 924 | 890 | 199.3 |
| C | 12 | 252 | 233437 | 910.75 | 931 | 920 | 255.3 |
| C | 6 | 223 | 41480 | 158.87 | 931 | 920 | 255.3 |
| C | 1 | 12 | 33082 | 125.98 | 931 | 920 | 255.3 |
| D | 12 | 110 | 3889050 | 15189.12 | 903 | 861 | 256.0 |
| D | 8 | 160 | 1219144 | 4759.19 | 903 | 861 | 256.0 |
| D | 8 | 240 | 411009 | 1602.23 | 903 | 861 | 256.0 |
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 |  |