Observation information
- date-obs: 2026-07-14
- time-obs: 10:23:54.837800000
- date-end: 2026-07-14
- time-end: 12:20:06.820200000
- obs_id: A14_045T01_9000006590
- exposure: 5925.99772352
- 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_58402cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58402cztM0_level2_quad_clean.evt
|
| Size (bytes) | 715,144,320 | 96,923,520 |
| Size | 682.0 MB
| 92.4 MB
|
| Events in quadrant A | 4,966,389 | 646,294 |
| Events in quadrant B | 7,731,685 | 671,202 |
| Events in quadrant C | 7,923,979 | 550,539 |
| Events in quadrant D | 5,311,324 | 580,815 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19688 | 0 |
| B | 0 | 28036 | 0 |
| C | 0 | 28364 | 0 |
| D | 0 | 20358 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6972 | 330 | 4.733219% |
| B | 6973 | 721 | 10.339882% |
| C | 6973 | 1215 | 17.424351% |
| D | 6973 | 333 | 4.775563% |
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 | 6972 | 6972 | 188 | 188 | 2.70% | 2.70% |  |
| B | 6973 | 6973 | 451 | 451 | 6.47% | 6.47% |  |
| C | 6973 | 6973 | 1116 | 1116 | 16.00% | 16.00% |  |
| D | 6973 | 6973 | 308 | 308 | 4.42% | 4.42% |  |
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 | 12 | 114 | 955654 | 5006.17 | 770 | 752 | 190.7 |
| A | 12 | 80 | 314401 | 1644.33 | 770 | 752 | 190.7 |
| A | 7 | 64 | 141614 | 738.48 | 770 | 752 | 190.7 |
| B | 5 | 172 | 2966626 | 18391.66 | 752 | 723 | 161.3 |
| B | 4 | 158 | 1006498 | 6236.84 | 752 | 723 | 161.3 |
| B | 6 | 255 | 328531 | 2032.75 | 752 | 723 | 161.3 |
| C | 9 | 38 | 2246529 | 11421.68 | 710 | 704 | 196.6 |
| C | 15 | 147 | 1555411 | 7906.83 | 710 | 704 | 196.6 |
| C | 13 | 3 | 657807 | 3341.85 | 710 | 704 | 196.6 |
| D | 8 | 240 | 723947 | 3388.56 | 746 | 713 | 213.4 |
| D | 2 | 249 | 433786 | 2029.07 | 746 | 713 | 213.4 |
| D | 5 | 113 | 400412 | 1872.71 | 746 | 713 | 213.4 |
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 |  |