Observation information
- date-obs: 2025-11-28
- time-obs: 20:08:36.168800000
- date-end: 2025-11-29
- time-end: 08:13:37.902500000
- obs_id: A14_025T01_9000006530
- exposure: 3345.11257303
- sourceid: NGC 3227
- observer: arijit
- ra_pnt: 155.8774
- dec_pnt: 19.86505
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_025T01_9000006530_55026cztM0_level2.fits
| modeM0/AS1A14_025T01_9000006530_55026cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,791,477,440 | 254,577,600 |
| Size | 2.6 GB
| 242.8 MB
|
| Events in quadrant A | 27,066,745 | 1,585,220 |
| Events in quadrant B | 13,128,526 | 2,226,583 |
| Events in quadrant C | 12,149,949 | 2,047,964 |
| Events in quadrant D | 49,234,064 | 287,049 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 103605 | 7248 |
| B | 0 | 59490 | 3445 |
| C | 0 | 56357 | 3335 |
| D | 0 | 178641 | 17159 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 491 | 29 |
| B | 0 | 490 | 26 |
| C | 0 | 491 | 29 |
| D | 0 | 493 | 29 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 48 | 0 |
| B | 0 | 48 | 0 |
| C | 0 | 48 | 0 |
| D | 0 | 48 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 22671 | 5831 | 25.720083% |
| B | 22905 | 1312 | 5.728007% |
| C | 22937 | 452 | 1.970615% |
| D | 22159 | 19078 | 86.095943% |
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 | 43500 | 23197 | 5291 | 5291 | 12.16% | 22.81% |  |
| B | 43500 | 23363 | 1056 | 1056 | 2.43% | 4.52% |  |
| C | 43500 | 23408 | 304 | 304 | 0.70% | 1.30% |  |
| D | 43500 | 22526 | 15836 | 15836 | 36.40% | 70.30% |  |
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 | 15 | 32 | 13329293 | 25793.43 | 2087 | 2037 | 516.7 |
| A | 12 | 115 | 2819501 | 5452.89 | 2087 | 2037 | 516.7 |
| A | 0 | 250 | 1741895 | 3367.3 | 2087 | 2037 | 516.7 |
| B | 0 | 183 | 2490718 | 4965.71 | 2343 | 2258 | 501.1 |
| B | 10 | 245 | 398226 | 790.15 | 2343 | 2258 | 501.1 |
| B | 5 | 185 | 285331 | 564.87 | 2343 | 2258 | 501.1 |
| C | 4 | 5 | 1219631 | 1862.62 | 2385 | 2361 | 653.5 |
| C | 1 | 16 | 552865 | 842.36 | 2385 | 2361 | 653.5 |
| C | 6 | 223 | 380497 | 578.61 | 2385 | 2361 | 653.5 |
| D | 15 | 94 | 38203136 | 157740.18 | 842 | 801 | 242.2 |
| D | 11 | 129 | 5995191 | 24751.27 | 842 | 801 | 242.2 |
| D | 10 | 181 | 654742 | 2700.17 | 842 | 801 | 242.2 |
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 |  |