Observation information
- date-obs: 2026-07-16
- time-obs: 10:46:15.458500000
- date-end: 2026-07-16
- time-end: 18:02:42.398700000
- obs_id: A14_045T01_9000006590
- exposure: 22652.0099413
- 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_58435cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58435cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,578,597,120 | 342,135,360 |
| Size | 1.5 GB
| 326.3 MB
|
| Events in quadrant A | 12,195,993 | 2,241,754 |
| Events in quadrant B | 15,186,531 | 2,346,984 |
| Events in quadrant C | 14,865,460 | 2,099,838 |
| Events in quadrant D | 14,336,272 | 2,024,239 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 486 | 0 |
| B | 0 | 486 | 0 |
| C | 0 | 486 | 0 |
| D | 0 | 486 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 53834 | 4 |
| B | 0 | 62216 | 4 |
| C | 0 | 61404 | 4 |
| D | 0 | 59162 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 23917 | 537 | 2.245265% |
| B | 23918 | 1148 | 4.799732% |
| C | 23918 | 1075 | 4.494523% |
| D | 23918 | 525 | 2.195000% |
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 | 26187 | 23921 | 181 | 181 | 0.69% | 0.76% |  |
| B | 26188 | 23922 | 693 | 693 | 2.65% | 2.90% |  |
| C | 26188 | 23922 | 783 | 783 | 2.99% | 3.27% |  |
| D | 26188 | 23922 | 370 | 370 | 1.41% | 1.55% |  |
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 | 1305989 | 1991.37 | 2627 | 2554 | 654.5 |
| A | 12 | 80 | 241641 | 365.27 | 2627 | 2554 | 654.5 |
| A | 3 | 14 | 154946 | 232.82 | 2627 | 2554 | 654.5 |
| B | 5 | 172 | 3273990 | 5979.32 | 2568 | 2470 | 547.1 |
| B | 4 | 201 | 679715 | 1237.79 | 2568 | 2470 | 547.1 |
| B | 4 | 171 | 205411 | 370.91 | 2568 | 2470 | 547.1 |
| C | 15 | 147 | 2778533 | 3998.11 | 2515 | 2486 | 694.3 |
| C | 14 | 245 | 893279 | 1282.93 | 2515 | 2486 | 694.3 |
| C | 14 | 254 | 262937 | 375.11 | 2515 | 2486 | 694.3 |
| D | 11 | 129 | 1118185 | 1551.15 | 2530 | 2417 | 719.3 |
| D | 8 | 240 | 763762 | 1058.43 | 2530 | 2417 | 719.3 |
| D | 2 | 120 | 533852 | 738.8 | 2530 | 2417 | 719.3 |
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 |  |