Observation information
- date-obs: 2024-08-17
- time-obs: 14:10:43.469700000
- date-end: 2024-08-17
- time-end: 16:27:46.457400000
- obs_id: A13_024T01_9000006394
- exposure: 6079.21396255
- sourceid: NGC 991
- observer: amrutha
- ra_pnt: 38.88617
- dec_pnt: -7.154436
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_024T01_9000006394_48067cztM0_level2.fits
| modeM0/AS1A13_024T01_9000006394_48067cztM0_level2_quad_clean.evt
|
| Size (bytes) | 486,017,280 | 107,161,920 |
| Size | 463.5 MB
| 102.2 MB
|
| Events in quadrant A | 7,442,380 | 681,396 |
| Events in quadrant B | 3,335,043 | 745,465 |
| Events in quadrant C | 2,996,718 | 708,585 |
| Events in quadrant D | 3,702,220 | 647,342 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26485 | 2 |
| B | 0 | 14426 | 2 |
| C | 0 | 13654 | 2 |
| D | 0 | 15453 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6626 | 602 | 9.085421% |
| B | 6626 | 111 | 1.675219% |
| C | 6626 | 54 | 0.814971% |
| D | 6626 | 140 | 2.112889% |
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 | 7671 | 6627 | 177 | 177 | 2.31% | 2.67% |  |
| B | 7671 | 6626 | 10 | 10 | 0.13% | 0.15% |  |
| C | 7671 | 6627 | 6 | 6 | 0.08% | 0.09% |  |
| D | 7671 | 6627 | 77 | 77 | 1.00% | 1.16% |  |
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 | 10 | 83 | 4130943 | 26467.93 | 746 | 729 | 156.0 |
| A | 13 | 248 | 376489 | 2408.01 | 746 | 729 | 156.0 |
| A | 7 | 3 | 23251 | 144.33 | 746 | 729 | 156.0 |
| B | 7 | 221 | 239465 | 1575.39 | 763 | 738 | 151.5 |
| B | 0 | 198 | 45768 | 297.16 | 763 | 738 | 151.5 |
| B | 0 | 197 | 19804 | 125.82 | 763 | 738 | 151.5 |
| C | 14 | 254 | 36103 | 199.75 | 751 | 754 | 177.0 |
| C | 12 | 2 | 16414 | 88.49 | 751 | 754 | 177.0 |
| C | 12 | 250 | 14318 | 76.65 | 751 | 754 | 177.0 |
| D | 2 | 249 | 365941 | 1945.92 | 751 | 729 | 187.7 |
| D | 2 | 120 | 134715 | 713.9 | 751 | 729 | 187.7 |
| D | 2 | 165 | 114657 | 607.03 | 751 | 729 | 187.7 |
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 |  |