Observation information
- date-obs: 2026-07-17
- time-obs: 07:33:18.288600000
- date-end: 2026-07-17
- time-end: 09:42:12.271900000
- obs_id: A14_045T01_9000006590
- exposure: 7298.50894368
- sourceid: NGC 4383
- observer: ujjwalkrishnan
- ra_pnt: 186.3563
- dec_pnt: 16.47013
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_045T01_9000006590_58445cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58445cztM0_level2_quad_clean.evt
|
| Size (bytes) | 453,038,400 | 111,222,720 |
| Size | 432.1 MB
| 106.1 MB
|
| Events in quadrant A | 3,573,520 | 727,440 |
| Events in quadrant B | 4,963,249 | 753,854 |
| Events in quadrant C | 3,475,907 | 699,699 |
| Events in quadrant D | 4,155,755 | 649,035 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16178 | 1 |
| B | 0 | 20076 | 0 |
| C | 0 | 16056 | 0 |
| D | 0 | 17766 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7734 | 54 | 0.698216% |
| B | 7734 | 408 | 5.275407% |
| C | 7734 | 16 | 0.206879% |
| D | 7734 | 139 | 1.797259% |
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 | 7734 | 7734 | 35 | 35 | 0.45% | 0.45% |  |
| B | 7734 | 7734 | 294 | 294 | 3.80% | 3.80% |  |
| C | 7734 | 7734 | 7 | 7 | 0.09% | 0.09% |  |
| D | 7734 | 7734 | 121 | 121 | 1.56% | 1.56% |  |
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 | 82106 | 380.57 | 853 | 831 | 213.6 |
| A | 12 | 80 | 40533 | 185.9 | 853 | 831 | 213.6 |
| A | 4 | 249 | 38896 | 178.24 | 853 | 831 | 213.6 |
| B | 5 | 172 | 931229 | 5203.75 | 826 | 797 | 178.8 |
| B | 8 | 128 | 151707 | 844.02 | 826 | 797 | 178.8 |
| B | 4 | 201 | 134938 | 750.23 | 826 | 797 | 178.8 |
| C | 4 | 5 | 53545 | 233.95 | 826 | 821 | 225.4 |
| C | 14 | 254 | 45527 | 198.37 | 826 | 821 | 225.4 |
| C | 14 | 245 | 42226 | 183.73 | 826 | 821 | 225.4 |
| D | 8 | 240 | 450416 | 1927.6 | 818 | 779 | 233.3 |
| D | 2 | 249 | 199137 | 850.36 | 818 | 779 | 233.3 |
| D | 2 | 120 | 104064 | 442.78 | 818 | 779 | 233.3 |
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 |  |