Observation information
- date-obs: 2026-02-23
- time-obs: 07:43:48.942200000
- date-end: 2026-02-23
- time-end: 09:51:36.924800000
- obs_id: A14_049T01_9000006552
- exposure: 1516.91966677
- 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_56305cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56305cztM0_level2_quad_clean.evt
|
| Size (bytes) | 790,784,640 | 78,606,720 |
| Size | 754.2 MB
| 75.0 MB
|
| Events in quadrant A | 15,373,062 | 144,939 |
| Events in quadrant B | 4,732,052 | 617,479 |
| Events in quadrant C | 4,470,711 | 587,448 |
| Events in quadrant D | 4,177,550 | 564,255 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50285 | 2 |
| B | 0 | 18623 | 2 |
| C | 0 | 18059 | 10 |
| D | 0 | 16965 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6683 | 5380 | 80.502768% |
| B | 6683 | 866 | 12.958252% |
| C | 6680 | 525 | 7.859281% |
| D | 6684 | 292 | 4.368642% |
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 | 7668 | 6684 | 5228 | 5228 | 68.18% | 78.22% |  |
| B | 7668 | 6684 | 254 | 254 | 3.31% | 3.80% |  |
| C | 7668 | 6682 | 450 | 450 | 5.87% | 6.73% |  |
| D | 7669 | 6685 | 211 | 211 | 2.75% | 3.16% |  |
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 | 7424818 | 70994.56 | 416 | 406 | 104.6 |
| A | 4 | 95 | 2845278 | 27203.56 | 416 | 406 | 104.6 |
| A | 7 | 64 | 1376727 | 13160.81 | 416 | 406 | 104.6 |
| B | 5 | 172 | 1168896 | 8312.18 | 660 | 637 | 140.5 |
| B | 5 | 185 | 434717 | 3088.49 | 660 | 637 | 140.5 |
| B | 1 | 159 | 133434 | 944.85 | 660 | 637 | 140.5 |
| C | 15 | 198 | 829092 | 4319.87 | 694 | 686 | 191.8 |
| C | 12 | 94 | 323071 | 1681.14 | 694 | 686 | 191.8 |
| C | 5 | 250 | 148533 | 770.98 | 694 | 686 | 191.8 |
| D | 2 | 249 | 309618 | 1540.05 | 704 | 673 | 200.6 |
| D | 13 | 153 | 255503 | 1270.29 | 704 | 673 | 200.6 |
| D | 6 | 239 | 238129 | 1183.68 | 704 | 673 | 200.6 |
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 |  |