Observation information
- date-obs: 2021-08-19
- time-obs: 00:15:47.913300000
- date-end: 2021-08-19
- time-end: 04:15:17.915900000
- obs_id: A10_109T01_9000004646
- exposure: 7679.26253404
- sourceid: Cygnus X-1
- observer: tanmoy
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A10_109T01_9000004646_31853cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31853cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,017,567,360 | 175,331,520 |
| Size | 970.4 MB
| 167.2 MB
|
| Events in quadrant A | 6,201,759 | 1,141,459 |
| Events in quadrant B | 9,771,529 | 1,129,477 |
| Events in quadrant C | 7,229,613 | 1,071,121 |
| Events in quadrant D | 6,738,687 | 1,072,262 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 262 | 0 |
| B | 0 | 262 | 0 |
| C | 0 | 262 | 0 |
| D | 0 | 262 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26614 | 3 |
| B | 0 | 39057 | 4 |
| C | 0 | 29761 | 3 |
| D | 0 | 28593 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 12969 | 41 | 0.316138% |
| B | 12968 | 152 | 1.172116% |
| C | 12968 | 411 | 3.169340% |
| D | 12968 | 101 | 0.778840% |
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 | 14189 | 12971 | 0 | 0 | 0.00% | 0.00% |  |
| B | 14188 | 12970 | 2 | 2 | 0.01% | 0.02% |  |
| C | 14188 | 12970 | 166 | 166 | 1.17% | 1.28% |  |
| D | 14188 | 12970 | 71 | 71 | 0.50% | 0.55% |  |
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 | 22110 | 63.82 | 1602 | 1566 | 321.9 |
| A | 13 | 6 | 19811 | 56.68 | 1602 | 1566 | 321.9 |
| A | 3 | 137 | 16624 | 46.78 | 1602 | 1566 | 321.9 |
| B | 6 | 159 | 3461134 | 11396.68 | 1581 | 1536 | 303.6 |
| B | 10 | 247 | 55057 | 176.31 | 1581 | 1536 | 303.6 |
| B | 0 | 190 | 38496 | 121.75 | 1581 | 1536 | 303.6 |
| C | 0 | 10 | 475598 | 1329.96 | 1525 | 1536 | 356.4 |
| C | 3 | 233 | 469316 | 1312.33 | 1525 | 1536 | 356.4 |
| C | 14 | 238 | 257979 | 719.44 | 1525 | 1536 | 356.4 |
| D | 8 | 195 | 323128 | 875.57 | 1548 | 1515 | 367.3 |
| D | 13 | 249 | 179897 | 485.63 | 1548 | 1515 | 367.3 |
| D | 2 | 250 | 130823 | 352.03 | 1548 | 1515 | 367.3 |
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 |  |