Observation information
- date-obs: 2018-07-31
- time-obs: 21:39:52.342000000
- date-end: 2018-08-01
- time-end: 01:47:07.344700000
- obs_id: A04_126T01_9000002262
- exposure: 9001.21934325
- sourceid: 4U 1735-44
- observer: anjali
- ra_pnt: 264.7429
- dec_pnt: -44.45
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_126T01_9000002262_15362cztM0_level2.evt
| modeM0/AS1A04_126T01_9000002262_15362cztM0_level2_quad_clean.evt
|
| Size (bytes) | 986,883,840 | 177,482,880 |
| Size | 941.2 MB
| 169.3 MB
|
| Events in quadrant A | 6,005,330 | 1,138,038 |
| Events in quadrant B | 7,527,753 | 1,134,628 |
| Events in quadrant C | 8,175,346 | 1,107,406 |
| Events in quadrant D | 7,278,187 | 1,074,332 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 16 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27187 | 4 |
| B | 0 | 31239 | 3 |
| C | 0 | 33315 | 3 |
| D | 0 | 31336 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 270 | 0 |
| B | 0 | 270 | 0 |
| C | 0 | 270 | 0 |
| D | 0 | 270 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 13327 | 57 | 0.427703% |
| B | 13327 | 308 | 2.311098% |
| C | 13327 | 489 | 3.669243% |
| D | 13327 | 389 | 2.918886% |
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 | 14168 | 13330 | 1 | 1 | 0.01% | 0.01% |  |
| B | 14168 | 13330 | 163 | 163 | 1.15% | 1.22% |  |
| C | 14168 | 13330 | 238 | 238 | 1.68% | 1.79% |  |
| D | 14168 | 13330 | 300 | 300 | 2.12% | 2.25% |  |
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 | 9 | 143 | 49203 | 152.7 | 1544 | 1511 | 312.3 |
| A | 15 | 239 | 19041 | 56.13 | 1544 | 1511 | 312.3 |
| A | 0 | 226 | 13699 | 39.02 | 1544 | 1511 | 312.3 |
| B | 10 | 16 | 988249 | 3341.92 | 1542 | 1502 | 295.3 |
| B | 0 | 189 | 82341 | 273.79 | 1542 | 1502 | 295.3 |
| B | 0 | 245 | 81524 | 271.02 | 1542 | 1502 | 295.3 |
| C | 3 | 233 | 2379978 | 7076.12 | 1469 | 1474 | 336.1 |
| C | 5 | 96 | 19014 | 52.18 | 1469 | 1474 | 336.1 |
| C | 15 | 127 | 15242 | 40.96 | 1469 | 1474 | 336.1 |
| D | 2 | 33 | 845086 | 2356.8 | 1479 | 1433 | 358.0 |
| D | 7 | 38 | 287916 | 800.31 | 1479 | 1433 | 358.0 |
| D | 13 | 122 | 163166 | 451.81 | 1479 | 1433 | 358.0 |
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 |  |