Observation information
- date-obs: 2026-06-27
- time-obs: 17:33:35.230800000
- date-end: 2026-06-27
- time-end: 19:47:31.210300000
- obs_id: A14_042T02_9000006586
- exposure: 3206.85102087
- 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_58154cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58154cztM0_level2_quad_clean.evt
|
| Size (bytes) | 772,441,920 | 102,456,000 |
| Size | 736.7 MB
| 97.7 MB
|
| Events in quadrant A | 3,632,527 | 784,494 |
| Events in quadrant B | 15,584,607 | 328,730 |
| Events in quadrant C | 4,473,525 | 732,429 |
| Events in quadrant D | 4,278,385 | 697,589 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16743 | 1 |
| B | 0 | 51882 | 1 |
| C | 0 | 19109 | 2 |
| D | 0 | 18312 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8036 | 30 | 0.373320% |
| B | 8037 | 5072 | 63.108125% |
| C | 8036 | 167 | 2.078148% |
| D | 8036 | 65 | 0.808860% |
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 | 8036 | 8036 | 9 | 9 | 0.11% | 0.11% |  |
| B | 8037 | 8037 | 4665 | 4665 | 58.04% | 58.04% |  |
| C | 8036 | 8036 | 140 | 140 | 1.74% | 1.74% |  |
| D | 8036 | 8036 | 61 | 61 | 0.76% | 0.76% |  |
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 | 13 | 248 | 40609 | 180.45 | 900 | 877 | 220.2 |
| A | 3 | 245 | 28236 | 124.26 | 900 | 877 | 220.2 |
| A | 8 | 249 | 22853 | 99.81 | 900 | 877 | 220.2 |
| B | 10 | 128 | 12456846 | 113801.93 | 507 | 489 | 109.5 |
| B | 2 | 249 | 709487 | 6477.44 | 507 | 489 | 109.5 |
| B | 10 | 247 | 155240 | 1413.81 | 507 | 489 | 109.5 |
| C | 6 | 223 | 408958 | 1726.9 | 860 | 853 | 236.3 |
| C | 12 | 252 | 345717 | 1459.29 | 860 | 853 | 236.3 |
| C | 12 | 254 | 260764 | 1099.81 | 860 | 853 | 236.3 |
| D | 8 | 240 | 187707 | 766.75 | 866 | 828 | 243.7 |
| D | 2 | 249 | 158663 | 647.59 | 866 | 828 | 243.7 |
| D | 12 | 110 | 132797 | 541.46 | 866 | 828 | 243.7 |
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 |  |