Observation information
- date-obs: 2018-02-27
- time-obs: 11:08:45.577700000
- date-end: 2018-02-27
- time-end: 13:27:35.581400000
- obs_id: A04_176T02_9000001924
- exposure: 3841.10677703
- sourceid: NGC 4395
- observer: KshamaSK
- ra_pnt: 186.4533
- dec_pnt: 33.54694
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_176T02_9000001924_13075cztM0_level2.evt
| modeM0/AS1A04_176T02_9000001924_13075cztM0_level2_quad_clean.evt
|
| Size (bytes) | 820,938,240 | 79,030,080 |
| Size | 782.9 MB
| 75.4 MB
|
| Events in quadrant A | 4,494,535 | 464,082 |
| Events in quadrant B | 8,009,255 | 461,618 |
| Events in quadrant C | 3,646,223 | 480,673 |
| Events in quadrant D | 8,185,191 | 444,301 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18415 | 3 |
| B | 0 | 29051 | 2 |
| C | 0 | 16280 | 2 |
| D | 0 | 29530 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7800 | 487 | 6.243590% |
| B | 7800 | 2262 | 29.000000% |
| C | 7800 | 247 | 3.166667% |
| D | 7800 | 1163 | 14.910256% |
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 | 8331 | 7804 | 126 | 126 | 1.51% | 1.61% |  |
| B | 8330 | 7803 | 1304 | 1304 | 15.65% | 16.71% |  |
| C | 8331 | 7804 | 3 | 3 | 0.04% | 0.04% |  |
| D | 8331 | 7804 | 638 | 638 | 7.66% | 8.18% |  |
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 | 223 | 456867 | 2367.94 | 942 | 917 | 192.6 |
| A | 15 | 239 | 218553 | 1130.28 | 942 | 917 | 192.6 |
| A | 8 | 15 | 99245 | 510.66 | 942 | 917 | 192.6 |
| B | 4 | 239 | 3896900 | 25506.54 | 782 | 761 | 152.8 |
| B | 0 | 85 | 928518 | 6073.67 | 782 | 761 | 152.8 |
| B | 4 | 48 | 41734 | 268.23 | 782 | 761 | 152.8 |
| C | 14 | 234 | 18595 | 81.81 | 927 | 931 | 215.9 |
| C | 13 | 61 | 7021 | 28.2 | 927 | 931 | 215.9 |
| C | 0 | 207 | 4195 | 15.12 | 927 | 931 | 215.9 |
| D | 1 | 52 | 4436073 | 20639.51 | 888 | 859 | 214.9 |
| D | 10 | 157 | 262373 | 1216.97 | 888 | 859 | 214.9 |
| D | 13 | 172 | 39361 | 179.17 | 888 | 859 | 214.9 |
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 |  |