Observation information
- date-obs: 2022-01-18
- time-obs: 02:27:05.895400000
- date-end: 2022-01-18
- time-end: 04:46:44.887600000
- obs_id: A05_208T01_9000004870
- exposure: 3118.98777321
- sourceid: NGC 4939
- observer: KshamaSK
- ra_pnt: 196.0599
- dec_pnt: -10.3396
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_208T01_9000004870_34104cztM0_level2.evt
| modeM0/AS1A05_208T01_9000004870_34104cztM0_level2_quad_clean.evt
|
| Size (bytes) | 499,849,920 | 72,305,280 |
| Size | 476.7 MB
| 69.0 MB
|
| Events in quadrant A | 2,634,981 | 473,882 |
| Events in quadrant B | 3,953,673 | 469,401 |
| Events in quadrant C | 4,130,591 | 447,625 |
| Events in quadrant D | 4,067,971 | 435,628 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 106 | 0 |
| B | 0 | 106 | 0 |
| C | 0 | 106 | 0 |
| D | 0 | 106 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 31 | 0 |
| B | 0 | 31 | 0 |
| C | 0 | 31 | 0 |
| D | 0 | 32 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10771 | 3 |
| B | 0 | 15031 | 2 |
| C | 0 | 15641 | 2 |
| D | 0 | 15506 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5175 | 28 | 0.541063% |
| B | 5175 | 349 | 6.743961% |
| C | 5175 | 330 | 6.376812% |
| D | 5175 | 138 | 2.666667% |
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 | 7298 | 5176 | 21 | 21 | 0.29% | 0.41% |  |
| B | 7298 | 5176 | 273 | 273 | 3.74% | 5.27% |  |
| C | 7298 | 5176 | 290 | 290 | 3.97% | 5.60% |  |
| D | 7298 | 5176 | 137 | 137 | 1.88% | 2.65% |  |
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 | 17 | 68405 | 514.91 | 656 | 643 | 131.6 |
| A | 10 | 83 | 20263 | 149.09 | 656 | 643 | 131.6 |
| A | 13 | 6 | 15300 | 111.38 | 656 | 643 | 131.6 |
| B | 5 | 172 | 1214299 | 10116.6 | 637 | 623 | 120.0 |
| B | 0 | 230 | 115497 | 957.53 | 637 | 623 | 120.0 |
| B | 4 | 232 | 22976 | 186.32 | 637 | 623 | 120.0 |
| C | 14 | 254 | 658125 | 4565.29 | 623 | 630 | 144.0 |
| C | 0 | 10 | 646002 | 4481.11 | 623 | 630 | 144.0 |
| C | 15 | 214 | 219473 | 1519.53 | 623 | 630 | 144.0 |
| D | 8 | 195 | 793740 | 5174.74 | 633 | 618 | 153.3 |
| D | 2 | 250 | 213439 | 1388.55 | 633 | 618 | 153.3 |
| D | 7 | 223 | 160983 | 1046.3 | 633 | 618 | 153.3 |
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 |  |