Observation information
- date-obs: 2020-04-30
- time-obs: 22:07:41.925900000
- date-end: 2020-05-01
- time-end: 01:50:06.921400000
- obs_id: A07_045T01_9000003628
- exposure: 6350.16254798
- sourceid: NGC 4438
- observer: Rahnapt
- ra_pnt: 186.94
- dec_pnt: 13.00883
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A07_045T01_9000003628_24821cztM0_level2.evt
| modeM0/AS1A07_045T01_9000003628_24821cztM0_level2_quad_clean.evt
|
| Size (bytes) | 765,861,120 | 140,944,320 |
| Size | 730.4 MB
| 134.4 MB
|
| Events in quadrant A | 5,336,591 | 897,490 |
| Events in quadrant B | 5,802,917 | 905,308 |
| Events in quadrant C | 5,743,032 | 844,441 |
| Events in quadrant D | 5,550,803 | 844,000 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23027 | 2 |
| B | 0 | 24457 | 2 |
| C | 0 | 24181 | 2 |
| D | 0 | 23908 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 228 | 0 |
| B | 0 | 228 | 0 |
| C | 0 | 228 | 0 |
| D | 0 | 228 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 11235 | 36 | 0.320427% |
| B | 11236 | 137 | 1.219295% |
| C | 11236 | 231 | 2.055892% |
| D | 11235 | 24 | 0.213618% |
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 | 13345 | 11237 | 0 | 0 | 0.00% | 0.00% |  |
| B | 13346 | 11238 | 61 | 61 | 0.46% | 0.54% |  |
| C | 13346 | 11238 | 128 | 128 | 0.96% | 1.14% |  |
| D | 13346 | 11238 | 3 | 3 | 0.02% | 0.03% |  |
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 | 13 | 254 | 16575 | 54.86 | 1381 | 1351 | 277.5 |
| A | 3 | 137 | 12824 | 41.35 | 1381 | 1351 | 277.5 |
| A | 0 | 226 | 11721 | 37.37 | 1381 | 1351 | 277.5 |
| B | 3 | 64 | 275228 | 1046.0 | 1366 | 1332 | 261.8 |
| B | 0 | 189 | 116628 | 440.31 | 1366 | 1332 | 261.8 |
| B | 12 | 111 | 32931 | 120.68 | 1366 | 1332 | 261.8 |
| C | 2 | 16 | 360537 | 1172.84 | 1308 | 1316 | 306.3 |
| C | 14 | 238 | 209029 | 678.17 | 1308 | 1316 | 306.3 |
| C | 5 | 112 | 45124 | 143.03 | 1308 | 1316 | 306.3 |
| D | 8 | 195 | 466458 | 1434.31 | 1332 | 1294 | 324.3 |
| D | 1 | 52 | 47926 | 143.79 | 1332 | 1294 | 324.3 |
| D | 2 | 234 | 43833 | 131.17 | 1332 | 1294 | 324.3 |
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 |  |