Observation information
- date-obs: 2026-02-14
- time-obs: 08:46:35.714200000
- date-end: 2026-02-14
- time-end: 10:54:15.697600000
- obs_id: A14_083T04_9000006550
- exposure: 5633.30652827
- sourceid: NGC1522
- observer: Rakshit
- ra_pnt: 61.533
- dec_pnt: -52.66842
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T04_9000006550_56172cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56172cztM0_level2_quad_clean.evt
|
| Size (bytes) | 470,672,640 | 97,421,760 |
| Size | 448.9 MB
| 92.9 MB
|
| Events in quadrant A | 6,342,635 | 583,300 |
| Events in quadrant B | 3,679,828 | 697,908 |
| Events in quadrant C | 3,586,623 | 625,039 |
| Events in quadrant D | 3,308,332 | 590,384 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 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 | 23257 | 1 |
| B | 0 | 15294 | 1 |
| C | 0 | 15283 | 1 |
| D | 0 | 14371 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6500 | 978 | 15.046154% |
| B | 6501 | 261 | 4.014767% |
| C | 6501 | 191 | 2.938010% |
| D | 6501 | 92 | 1.415167% |
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 | 7660 | 6501 | 685 | 685 | 8.94% | 10.54% |  |
| B | 7661 | 6502 | 119 | 119 | 1.55% | 1.83% |  |
| C | 7661 | 6502 | 114 | 114 | 1.49% | 1.75% |  |
| D | 7661 | 6502 | 24 | 24 | 0.31% | 0.37% |  |
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 | 12 | 115 | 1296187 | 7561.8 | 692 | 674 | 171.3 |
| A | 15 | 32 | 1163313 | 6786.22 | 692 | 674 | 171.3 |
| A | 9 | 250 | 713076 | 4158.23 | 692 | 674 | 171.3 |
| B | 5 | 185 | 430116 | 2855.04 | 711 | 684 | 150.4 |
| B | 4 | 156 | 88011 | 580.59 | 711 | 684 | 150.4 |
| B | 10 | 247 | 72865 | 479.89 | 711 | 684 | 150.4 |
| C | 12 | 254 | 537280 | 2786.41 | 700 | 694 | 192.6 |
| C | 6 | 223 | 96414 | 497.06 | 700 | 694 | 192.6 |
| C | 15 | 230 | 70221 | 361.04 | 700 | 694 | 192.6 |
| D | 11 | 129 | 96020 | 486.07 | 703 | 672 | 196.2 |
| D | 2 | 249 | 77938 | 393.89 | 703 | 672 | 196.2 |
| D | 8 | 240 | 75337 | 380.63 | 703 | 672 | 196.2 |
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 |  |