Observation information
- date-obs: 2025-12-16
- time-obs: 05:38:22.509300000
- date-end: 2025-12-16
- time-end: 11:23:00.466400000
- obs_id: A14_009T01_9000006534
- exposure: 18657.2386526
- 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_55280cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55280cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,206,777,600 | 274,720,320 |
| Size | 1.1 GB
| 262.0 MB
|
| Events in quadrant A | 8,902,359 | 1,767,864 |
| Events in quadrant B | 9,975,085 | 1,899,488 |
| Events in quadrant C | 10,305,454 | 1,718,873 |
| Events in quadrant D | 13,959,599 | 1,572,539 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 398 | 0 |
| B | 0 | 398 | 0 |
| C | 0 | 398 | 0 |
| D | 0 | 398 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 41826 | 2 |
| B | 0 | 44711 | 2 |
| C | 0 | 45532 | 2 |
| D | 0 | 54958 | 2 |
| 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 | 19728 | 439 | 2.225264% |
| B | 19728 | 571 | 2.894363% |
| C | 19729 | 479 | 2.427898% |
| D | 19729 | 1072 | 5.433626% |
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 | 20678 | 19729 | 100 | 100 | 0.48% | 0.51% |  |
| B | 20678 | 19730 | 33 | 33 | 0.16% | 0.17% |  |
| C | 20679 | 19731 | 278 | 278 | 1.34% | 1.41% |  |
| D | 20679 | 19731 | 842 | 842 | 4.07% | 4.27% |  |
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 | 0 | 8 | 471604 | 923.59 | 2083 | 2026 | 508.4 |
| A | 7 | 243 | 144639 | 280.5 | 2083 | 2026 | 508.4 |
| A | 4 | 3 | 63824 | 121.55 | 2083 | 2026 | 508.4 |
| B | 2 | 249 | 1305574 | 2960.62 | 2061 | 1980 | 440.3 |
| B | 1 | 159 | 161943 | 363.3 | 2061 | 1980 | 440.3 |
| B | 5 | 185 | 120927 | 270.14 | 2061 | 1980 | 440.3 |
| C | 13 | 3 | 990500 | 1792.23 | 2029 | 2017 | 551.5 |
| C | 12 | 252 | 272365 | 490.17 | 2029 | 2017 | 551.5 |
| C | 10 | 22 | 270080 | 486.03 | 2029 | 2017 | 551.5 |
| D | 7 | 70 | 1790391 | 3239.45 | 1991 | 1906 | 552.1 |
| D | 11 | 129 | 1458064 | 2637.52 | 1991 | 1906 | 552.1 |
| D | 2 | 31 | 682383 | 1232.54 | 1991 | 1906 | 552.1 |
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 |  |