Observation information
- date-obs: 2026-02-25
- time-obs: 06:29:24.567000000
- date-end: 2026-02-25
- time-end: 08:40:31.549700000
- obs_id: A14_049T01_9000006552
- exposure: 214.244432509
- 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_56334cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56334cztM0_level2_quad_clean.evt
|
| Size (bytes) | 937,382,400 | 74,721,600 |
| Size | 894.0 MB
| 71.3 MB
|
| Events in quadrant A | 8,717,728 | 479,960 |
| Events in quadrant B | 4,576,774 | 682,689 |
| Events in quadrant C | 4,874,107 | 608,561 |
| Events in quadrant D | 16,007,705 | 20,916 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 30508 | 2 |
| B | 0 | 18222 | 2 |
| C | 0 | 19217 | 2 |
| D | 0 | 52199 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6740 | 2006 | 29.762611% |
| B | 6740 | 415 | 6.157270% |
| C | 6740 | 432 | 6.409496% |
| D | 6740 | 6570 | 97.477745% |
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 | 7695 | 6741 | 1587 | 1587 | 20.62% | 23.54% |  |
| B | 7695 | 6741 | 108 | 108 | 1.40% | 1.60% |  |
| C | 7695 | 6741 | 262 | 262 | 3.40% | 3.89% |  |
| D | 7694 | 6739 | 5531 | 5531 | 71.89% | 82.07% |  |
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 | 4399099 | 25629.46 | 688 | 671 | 171.6 |
| A | 3 | 14 | 366595 | 2132.22 | 688 | 671 | 171.6 |
| A | 0 | 8 | 278046 | 1616.25 | 688 | 671 | 171.6 |
| B | 5 | 185 | 638530 | 4052.63 | 736 | 710 | 157.4 |
| B | 3 | 145 | 378551 | 2400.76 | 736 | 710 | 157.4 |
| B | 0 | 231 | 296860 | 1881.7 | 736 | 710 | 157.4 |
| C | 12 | 252 | 899284 | 4526.12 | 723 | 716 | 198.5 |
| C | 5 | 250 | 659942 | 3320.55 | 723 | 716 | 198.5 |
| C | 12 | 254 | 191531 | 961.14 | 723 | 716 | 198.5 |
| D | 8 | 129 | 14063942 | 235381.41 | 203 | 192 | 59.7 |
| D | 2 | 249 | 517000 | 8649.68 | 203 | 192 | 59.7 |
| D | 12 | 3 | 454444 | 7602.7 | 203 | 192 | 59.7 |
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 |  |