Observation information
- date-obs: 2026-07-14
- time-obs: 17:13:05.786000000
- date-end: 2026-07-14
- time-end: 19:14:27.769300000
- obs_id: A14_045T01_9000006590
- exposure: 2963.64640409
- 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_58406cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58406cztM0_level2_quad_clean.evt
|
| Size (bytes) | 746,282,880 | 79,562,880 |
| Size | 711.7 MB
| 75.9 MB
|
| Events in quadrant A | 8,450,382 | 534,218 |
| Events in quadrant B | 11,328,059 | 314,207 |
| Events in quadrant C | 3,191,358 | 578,343 |
| Events in quadrant D | 4,164,046 | 539,385 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 29399 | 1 |
| B | 0 | 38018 | 1 |
| C | 0 | 14031 | 1 |
| D | 0 | 16749 | 7 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6342 | 1029 | 16.225166% |
| B | 6343 | 3660 | 57.701403% |
| C | 6343 | 75 | 1.182406% |
| D | 6342 | 132 | 2.081362% |
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 | 7282 | 6343 | 846 | 846 | 11.62% | 13.34% |  |
| B | 7283 | 6341 | 2514 | 2514 | 34.52% | 39.65% |  |
| C | 7283 | 6344 | 41 | 41 | 0.56% | 0.65% |  |
| D | 7282 | 6343 | 122 | 122 | 1.68% | 1.92% |  |
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 | 14 | 2257139 | 13972.77 | 648 | 630 | 161.5 |
| A | 4 | 249 | 1832523 | 11343.46 | 648 | 630 | 161.5 |
| A | 12 | 114 | 924105 | 5718.35 | 648 | 630 | 161.5 |
| B | 6 | 255 | 8184037 | 81464.06 | 467 | 450 | 100.5 |
| B | 5 | 172 | 779156 | 7751.68 | 467 | 450 | 100.5 |
| B | 4 | 158 | 160096 | 1589.21 | 467 | 450 | 100.5 |
| C | 9 | 38 | 158066 | 859.61 | 664 | 656 | 183.1 |
| C | 4 | 5 | 109869 | 596.41 | 664 | 656 | 183.1 |
| C | 13 | 3 | 93532 | 507.19 | 664 | 656 | 183.1 |
| D | 8 | 240 | 561253 | 3006.29 | 654 | 624 | 186.5 |
| D | 2 | 249 | 314901 | 1685.26 | 654 | 624 | 186.5 |
| D | 12 | 110 | 242088 | 1294.82 | 654 | 624 | 186.5 |
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 |  |