Observation information
- date-obs: 2025-07-13
- time-obs: 14:33:06.115100000
- date-end: 2025-07-13
- time-end: 16:44:34.095200000
- obs_id: A13_003T01_9000006486
- exposure: 1496.86325389
- sourceid: M31N2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_003T01_9000006486_52966cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_52966cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,148,719,680 | 91,100,160 |
| Size | 1.1 GB
| 86.9 MB
|
| Events in quadrant A | 19,042,382 | 102,816 |
| Events in quadrant B | 6,286,638 | 805,376 |
| Events in quadrant C | 7,213,927 | 663,177 |
| Events in quadrant D | 9,371,344 | 635,295 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 61848 | 0 |
| B | 0 | 24136 | 0 |
| C | 0 | 26923 | 0 |
| D | 0 | 33437 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7858 | 7858 | 100.000000% |
| B | 7859 | 694 | 8.830640% |
| C | 7859 | 1215 | 15.459982% |
| D | 7859 | 1169 | 14.874666% |
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 | 7887 | 7857 | 7638 | 7638 | 96.84% | 97.21% |  |
| B | 7889 | 7859 | 283 | 283 | 3.59% | 3.60% |  |
| C | 7889 | 7859 | 942 | 942 | 11.94% | 11.99% |  |
| D | 7889 | 7860 | 870 | 870 | 11.03% | 11.07% |  |
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 | 9 | 191 | 18291956 | 498408.75 | 137 | 133 | 36.7 |
| A | 0 | 8 | 63621 | 1729.88 | 137 | 133 | 36.7 |
| A | 15 | 174 | 41786 | 1134.93 | 137 | 133 | 36.7 |
| B | 10 | 128 | 1198095 | 6584.23 | 854 | 823 | 181.8 |
| B | 10 | 254 | 775472 | 4260.07 | 854 | 823 | 181.8 |
| B | 12 | 17 | 364714 | 2001.17 | 854 | 823 | 181.8 |
| C | 12 | 254 | 829634 | 3833.17 | 798 | 792 | 216.2 |
| C | 2 | 12 | 556208 | 2568.65 | 798 | 792 | 216.2 |
| C | 15 | 224 | 528372 | 2439.91 | 798 | 792 | 216.2 |
| D | 2 | 62 | 1828560 | 8071.27 | 803 | 770 | 226.5 |
| D | 15 | 78 | 1823838 | 8050.41 | 803 | 770 | 226.5 |
| D | 8 | 176 | 443620 | 1955.56 | 803 | 770 | 226.5 |
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 |  |