Observation information
- date-obs: 2026-07-17
- time-obs: 17:47:12.207000000
- date-end: 2026-07-17
- time-end: 20:00:37.179900000
- obs_id: A14_045T01_9000006590
- exposure: 5811.92025995
- 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_58452cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58452cztM0_level2_quad_clean.evt
|
| Size (bytes) | 421,816,320 | 93,061,440 |
| Size | 402.3 MB
| 88.8 MB
|
| Events in quadrant A | 2,913,780 | 623,173 |
| Events in quadrant B | 3,326,705 | 661,229 |
| Events in quadrant C | 4,648,370 | 550,168 |
| Events in quadrant D | 4,230,971 | 539,600 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13378 | 2 |
| B | 0 | 14324 | 2 |
| C | 0 | 18211 | 2 |
| D | 0 | 17065 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6355 | 31 | 0.487805% |
| B | 6355 | 114 | 1.793863% |
| C | 6355 | 584 | 9.189614% |
| D | 6354 | 322 | 5.067674% |
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 | 7455 | 6356 | 11 | 11 | 0.15% | 0.17% |  |
| B | 7455 | 6355 | 71 | 71 | 0.95% | 1.12% |  |
| C | 7455 | 6356 | 458 | 458 | 6.14% | 7.21% |  |
| D | 7454 | 6355 | 264 | 264 | 3.54% | 4.15% |  |
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 | 80 | 91763 | 526.14 | 697 | 681 | 173.1 |
| A | 3 | 14 | 49895 | 284.29 | 697 | 681 | 173.1 |
| A | 10 | 248 | 28333 | 159.73 | 697 | 681 | 173.1 |
| B | 5 | 172 | 127906 | 857.52 | 691 | 667 | 148.4 |
| B | 4 | 201 | 112684 | 754.93 | 691 | 667 | 148.4 |
| B | 5 | 185 | 74942 | 500.57 | 691 | 667 | 148.4 |
| C | 1 | 12 | 1462935 | 8205.97 | 647 | 643 | 178.2 |
| C | 12 | 250 | 199206 | 1114.28 | 647 | 643 | 178.2 |
| C | 13 | 3 | 155105 | 866.8 | 647 | 643 | 178.2 |
| D | 8 | 240 | 1157343 | 6147.16 | 657 | 628 | 188.2 |
| D | 12 | 248 | 95003 | 501.54 | 657 | 628 | 188.2 |
| D | 6 | 239 | 83449 | 440.14 | 657 | 628 | 188.2 |
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 |  |