Observation information
- date-obs: 2026-02-25
- time-obs: 15:15:01.499900000
- date-end: 2026-02-25
- time-end: 20:52:08.454600000
- obs_id: A14_049T01_9000006552
- exposure: 10703.0654966
- sourceid: NGC 1487
- observer: amrutha
- ra_pnt: 58.94208
- dec_pnt: -42.36806
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_049T01_9000006552_56341cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56341cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,888,499,520 | 238,576,320 |
| Size | 1.8 GB
| 227.5 MB
|
| Events in quadrant A | 14,515,282 | 1,683,323 |
| Events in quadrant B | 11,180,038 | 1,789,917 |
| Events in quadrant C | 12,465,218 | 1,574,475 |
| Events in quadrant D | 30,277,090 | 864,387 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 388 | 0 |
| B | 0 | 388 | 0 |
| C | 0 | 388 | 0 |
| D | 0 | 388 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56190 | 4 |
| B | 0 | 47017 | 4 |
| C | 0 | 50980 | 8 |
| D | 0 | 103151 | 4 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19012 | 875 | 4.602356% |
| B | 19012 | 804 | 4.228908% |
| C | 19011 | 1082 | 5.691442% |
| D | 19012 | 8856 | 46.581107% |
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 | 20227 | 19016 | 858 | 858 | 4.24% | 4.51% |  |
| B | 20227 | 19016 | 380 | 380 | 1.88% | 2.00% |  |
| C | 20226 | 19015 | 905 | 905 | 4.47% | 4.76% |  |
| D | 20226 | 19014 | 7261 | 7261 | 35.90% | 38.19% |  |
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 | 95 | 3034829 | 6088.59 | 1991 | 1942 | 498.1 |
| A | 3 | 14 | 754537 | 1510.85 | 1991 | 1942 | 498.1 |
| A | 7 | 64 | 351231 | 701.2 | 1991 | 1942 | 498.1 |
| B | 5 | 185 | 1004968 | 2401.89 | 1975 | 1901 | 417.6 |
| B | 0 | 231 | 770036 | 1839.34 | 1975 | 1901 | 417.6 |
| B | 0 | 183 | 659473 | 1574.59 | 1975 | 1901 | 417.6 |
| C | 12 | 254 | 1307875 | 2493.49 | 1909 | 1898 | 523.8 |
| C | 15 | 230 | 1065881 | 2031.46 | 1909 | 1898 | 523.8 |
| C | 6 | 223 | 887624 | 1691.11 | 1909 | 1898 | 523.8 |
| D | 8 | 129 | 20958034 | 52133.25 | 1390 | 1325 | 402.0 |
| D | 6 | 239 | 1240436 | 3082.49 | 1390 | 1325 | 402.0 |
| D | 2 | 249 | 538232 | 1335.64 | 1390 | 1325 | 402.0 |
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 |  |