Observation information
- date-obs: 2026-02-22
- time-obs: 07:24:25.139400000
- date-end: 2026-02-22
- time-end: 09:33:58.122100000
- obs_id: A14_049T01_9000006552
- exposure: 3045.03968912
- 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_56290cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56290cztM0_level2_quad_clean.evt
|
| Size (bytes) | 836,493,120 | 79,856,640 |
| Size | 797.7 MB
| 76.2 MB
|
| Events in quadrant A | 12,583,357 | 308,160 |
| Events in quadrant B | 4,114,878 | 664,219 |
| Events in quadrant C | 8,710,576 | 415,839 |
| Events in quadrant D | 5,042,132 | 568,232 |
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 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 41976 | 2 |
| B | 0 | 16685 | 2 |
| C | 0 | 30475 | 2 |
| D | 0 | 19528 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6624 | 3875 | 58.499396% |
| B | 6624 | 486 | 7.336957% |
| C | 6624 | 2506 | 37.832126% |
| D | 6623 | 392 | 5.918768% |
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 | 7654 | 6624 | 3430 | 3430 | 44.81% | 51.78% |  |
| B | 7654 | 6624 | 223 | 223 | 2.91% | 3.37% |  |
| C | 7654 | 6624 | 2020 | 2020 | 26.39% | 30.50% |  |
| D | 7653 | 6623 | 259 | 259 | 3.38% | 3.91% |  |
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 | 5253474 | 40071.03 | 529 | 516 | 131.1 |
| A | 7 | 64 | 2237632 | 17065.34 | 529 | 516 | 131.1 |
| A | 14 | 235 | 767664 | 5852.02 | 529 | 516 | 131.1 |
| B | 5 | 172 | 594112 | 3950.62 | 706 | 680 | 150.2 |
| B | 5 | 185 | 257077 | 1706.9 | 706 | 680 | 150.2 |
| B | 0 | 63 | 115385 | 763.62 | 706 | 680 | 150.2 |
| C | 12 | 254 | 4912515 | 31250.51 | 578 | 572 | 157.2 |
| C | 13 | 3 | 689860 | 4385.35 | 578 | 572 | 157.2 |
| C | 5 | 250 | 355837 | 2260.25 | 578 | 572 | 157.2 |
| D | 12 | 31 | 811433 | 4025.46 | 711 | 678 | 201.4 |
| D | 2 | 249 | 542094 | 2688.17 | 711 | 678 | 201.4 |
| D | 8 | 129 | 238273 | 1179.68 | 711 | 678 | 201.4 |
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 |  |