Observation information
- date-obs: 2025-12-14
- time-obs: 06:46:50.872500000
- date-end: 2025-12-14
- time-end: 12:33:22.830500000
- obs_id: A14_009T01_9000006534
- exposure: 18640.9521031
- 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_55251cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55251cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,298,419,200 | 274,265,280 |
| Size | 1.2 GB
| 261.6 MB
|
| Events in quadrant A | 9,237,710 | 1,782,980 |
| Events in quadrant B | 10,038,852 | 1,861,415 |
| Events in quadrant C | 13,131,260 | 1,683,180 |
| Events in quadrant D | 14,115,745 | 1,606,984 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 400 | 0 |
| B | 0 | 400 | 0 |
| C | 0 | 400 | 0 |
| D | 0 | 400 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 42904 | 2 |
| B | 0 | 45429 | 2 |
| C | 0 | 52843 | 2 |
| D | 0 | 54656 | 3 |
| 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 | 19882 | 479 | 2.409214% |
| B | 19883 | 1087 | 5.466982% |
| C | 19883 | 942 | 4.737716% |
| D | 19882 | 725 | 3.646514% |
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 | 20792 | 19884 | 120 | 120 | 0.58% | 0.60% |  |
| B | 20793 | 19885 | 498 | 498 | 2.40% | 2.50% |  |
| C | 20793 | 19885 | 714 | 714 | 3.43% | 3.59% |  |
| D | 20792 | 19884 | 472 | 472 | 2.27% | 2.37% |  |
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 | 384360 | 753.0 | 2095 | 2041 | 507.7 |
| A | 3 | 62 | 282170 | 551.73 | 2095 | 2041 | 507.7 |
| A | 12 | 115 | 118899 | 230.16 | 2095 | 2041 | 507.7 |
| B | 5 | 185 | 1486708 | 3422.66 | 2034 | 1956 | 433.8 |
| B | 2 | 249 | 260277 | 595.48 | 2034 | 1956 | 433.8 |
| B | 10 | 247 | 118746 | 269.23 | 2034 | 1956 | 433.8 |
| C | 1 | 16 | 1630540 | 2943.24 | 2025 | 2004 | 553.3 |
| C | 13 | 3 | 1199977 | 2165.09 | 2025 | 2004 | 553.3 |
| C | 15 | 147 | 706449 | 1273.14 | 2025 | 2004 | 553.3 |
| D | 5 | 38 | 2281456 | 4017.71 | 2031 | 1947 | 567.4 |
| D | 2 | 249 | 1083816 | 1906.83 | 2031 | 1947 | 567.4 |
| D | 8 | 160 | 812477 | 1428.58 | 2031 | 1947 | 567.4 |
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 |  |