Observation information
- date-obs: 2026-07-17
- time-obs: 03:35:39.318300000
- date-end: 2026-07-17
- time-end: 06:10:25.299100000
- obs_id: A14_045T01_9000006590
- exposure: 7367.93690372
- 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_58443cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58443cztM0_level2_quad_clean.evt
|
| Size (bytes) | 526,420,800 | 114,589,440 |
| Size | 502.0 MB
| 109.3 MB
|
| Events in quadrant A | 4,123,641 | 746,974 |
| Events in quadrant B | 4,610,555 | 782,948 |
| Events in quadrant C | 5,479,008 | 702,958 |
| Events in quadrant D | 4,643,740 | 674,817 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 166 | 0 |
| B | 0 | 166 | 0 |
| C | 0 | 166 | 0 |
| D | 0 | 166 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17917 | 3 |
| B | 0 | 19373 | 3 |
| C | 0 | 21917 | 3 |
| D | 0 | 19567 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8091 | 414 | 5.116796% |
| B | 8091 | 681 | 8.416759% |
| C | 8091 | 687 | 8.490916% |
| D | 8091 | 412 | 5.092078% |
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 | 9286 | 8091 | 29 | 29 | 0.31% | 0.36% |  |
| B | 9286 | 8092 | 185 | 185 | 1.99% | 2.29% |  |
| C | 9286 | 8091 | 330 | 330 | 3.55% | 4.08% |  |
| D | 9286 | 8092 | 123 | 123 | 1.32% | 1.52% |  |
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 | 4 | 249 | 143048 | 599.65 | 957 | 929 | 237.0 |
| A | 12 | 80 | 103538 | 432.94 | 957 | 929 | 237.0 |
| A | 13 | 248 | 95910 | 400.76 | 957 | 929 | 237.0 |
| B | 4 | 201 | 379149 | 1887.27 | 925 | 889 | 200.4 |
| B | 5 | 172 | 253777 | 1261.74 | 925 | 889 | 200.4 |
| B | 8 | 128 | 74726 | 368.4 | 925 | 889 | 200.4 |
| C | 5 | 10 | 1140789 | 4682.26 | 902 | 896 | 243.4 |
| C | 14 | 245 | 221047 | 904.3 | 902 | 896 | 243.4 |
| C | 6 | 223 | 216220 | 884.47 | 902 | 896 | 243.4 |
| D | 8 | 240 | 391181 | 1513.59 | 922 | 880 | 257.9 |
| D | 2 | 249 | 269419 | 1041.4 | 922 | 880 | 257.9 |
| D | 7 | 222 | 70466 | 269.86 | 922 | 880 | 257.9 |
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 |  |