Observation information
- date-obs: 2025-12-12
- time-obs: 09:29:04.213800000
- date-end: 2025-12-12
- time-end: 15:27:24.165200000
- obs_id: A14_009T01_9000006534
- exposure: 17918.8802673
- sourceid: M31N 2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_009T01_9000006534_55223cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55223cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,476,132,480 | 270,146,880 |
| Size | 1.4 GB
| 257.6 MB
|
| Events in quadrant A | 9,880,460 | 1,808,103 |
| Events in quadrant B | 10,172,037 | 1,915,501 |
| Events in quadrant C | 17,189,626 | 1,591,337 |
| Events in quadrant D | 15,862,583 | 1,495,357 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 404 | 0 |
| B | 0 | 404 | 0 |
| C | 0 | 404 | 0 |
| D | 0 | 404 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 44194 | 3 |
| B | 0 | 44870 | 4 |
| C | 0 | 65204 | 4 |
| D | 0 | 60923 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19870 | 452 | 2.274786% |
| B | 19869 | 666 | 3.351955% |
| C | 19868 | 2264 | 11.395208% |
| D | 19870 | 1784 | 8.978359% |
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 | 21500 | 19871 | 157 | 157 | 0.73% | 0.79% |  |
| B | 21500 | 19871 | 248 | 248 | 1.15% | 1.25% |  |
| C | 21499 | 19871 | 1967 | 1967 | 9.15% | 9.90% |  |
| D | 21500 | 19871 | 1541 | 1541 | 7.17% | 7.76% |  |
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 | 205 | 627825 | 1218.84 | 2102 | 2051 | 513.4 |
| A | 0 | 8 | 272845 | 527.44 | 2102 | 2051 | 513.4 |
| A | 3 | 62 | 217353 | 419.35 | 2102 | 2051 | 513.4 |
| B | 2 | 249 | 521113 | 1177.79 | 2064 | 1984 | 440.8 |
| B | 5 | 185 | 454267 | 1026.13 | 2064 | 1984 | 440.8 |
| B | 10 | 247 | 412744 | 931.93 | 2064 | 1984 | 440.8 |
| C | 12 | 254 | 4481512 | 8295.59 | 1964 | 1948 | 540.0 |
| C | 10 | 22 | 1957325 | 3621.11 | 1964 | 1948 | 540.0 |
| C | 13 | 3 | 1302460 | 2408.38 | 1964 | 1948 | 540.0 |
| D | 2 | 249 | 5274429 | 9483.75 | 1986 | 1904 | 556.0 |
| D | 11 | 129 | 1379463 | 2477.83 | 1986 | 1904 | 556.0 |
| D | 3 | 12 | 226767 | 404.46 | 1986 | 1904 | 556.0 |
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 |  |