Observation information
- date-obs: 2026-02-24
- time-obs: 09:44:15.734000000
- date-end: 2026-02-24
- time-end: 11:51:45.717100000
- obs_id: A14_049T01_9000006552
- exposure: 3653.83611774
- 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_56321cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56321cztM0_level2_quad_clean.evt
|
| Size (bytes) | 807,500,160 | 89,504,640 |
| Size | 770.1 MB
| 85.4 MB
|
| Events in quadrant A | 13,771,432 | 359,131 |
| Events in quadrant B | 4,712,468 | 709,879 |
| Events in quadrant C | 4,259,221 | 645,458 |
| Events in quadrant D | 6,590,257 | 494,193 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45899 | 8 |
| B | 0 | 19090 | 1 |
| C | 0 | 17779 | 1 |
| D | 0 | 24575 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7190 | 3917 | 54.478442% |
| B | 7190 | 410 | 5.702364% |
| C | 7190 | 283 | 3.936022% |
| D | 7190 | 1592 | 22.141864% |
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 | 7650 | 7192 | 3380 | 3380 | 44.18% | 47.00% |  |
| B | 7650 | 7192 | 147 | 147 | 1.92% | 2.04% |  |
| C | 7650 | 7192 | 124 | 124 | 1.62% | 1.72% |  |
| D | 7649 | 7190 | 750 | 750 | 9.81% | 10.43% |  |
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 | 11 | 31 | 6814919 | 44297.24 | 611 | 596 | 153.8 |
| A | 4 | 95 | 2189765 | 14230.93 | 611 | 596 | 153.8 |
| A | 7 | 64 | 532097 | 3455.08 | 611 | 596 | 153.8 |
| B | 5 | 185 | 795582 | 4871.85 | 764 | 736 | 163.2 |
| B | 1 | 255 | 224005 | 1368.48 | 764 | 736 | 163.2 |
| B | 0 | 231 | 220916 | 1349.55 | 764 | 736 | 163.2 |
| C | 12 | 252 | 481231 | 2312.88 | 754 | 744 | 207.7 |
| C | 15 | 198 | 467814 | 2248.29 | 754 | 744 | 207.7 |
| C | 13 | 3 | 93950 | 448.66 | 754 | 744 | 207.7 |
| D | 8 | 129 | 2943938 | 16024.6 | 644 | 616 | 183.7 |
| D | 2 | 249 | 536352 | 2916.76 | 644 | 616 | 183.7 |
| D | 6 | 239 | 149913 | 812.83 | 644 | 616 | 183.7 |
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 |  |