Observation information
- date-obs: 2025-06-08
- time-obs: 11:21:36.249300000
- date-end: 2025-06-08
- time-end: 13:28:39.227600000
- obs_id: A13_037T01_9000006476
- exposure: 5015.20947981
- sourceid: Cygnus X-2
- observer: ranjeev
- ra_pnt: 326.1714
- dec_pnt: 38.32141
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_037T01_9000006476_52444cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52444cztM0_level2_quad_clean.evt
|
| Size (bytes) | 889,076,160 | 95,376,960 |
| Size | 847.9 MB
| 91.0 MB
|
| Events in quadrant A | 3,620,893 | 699,828 |
| Events in quadrant B | 6,044,355 | 704,601 |
| Events in quadrant C | 9,647,242 | 545,252 |
| Events in quadrant D | 13,009,423 | 407,068 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16341 | 0 |
| B | 0 | 23170 | 0 |
| C | 0 | 33985 | 0 |
| D | 0 | 43975 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7623 | 40 | 0.524728% |
| B | 7624 | 631 | 8.276495% |
| C | 7624 | 1572 | 20.619098% |
| D | 7624 | 2945 | 38.628017% |
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 | 7623 | 7623 | 37 | 37 | 0.49% | 0.49% |  |
| B | 7624 | 7624 | 481 | 481 | 6.31% | 6.31% |  |
| C | 7624 | 7624 | 1576 | 1576 | 20.67% | 20.67% |  |
| D | 7624 | 7624 | 3025 | 3025 | 39.68% | 39.68% |  |
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 | 4 | 61 | 173215 | 873.61 | 791 | 772 | 197.4 |
| A | 8 | 249 | 90841 | 456.3 | 791 | 772 | 197.4 |
| A | 4 | 3 | 42126 | 209.5 | 791 | 772 | 197.4 |
| B | 12 | 32 | 1985560 | 12180.63 | 759 | 733 | 162.9 |
| B | 4 | 170 | 289149 | 1769.97 | 759 | 733 | 162.9 |
| B | 7 | 0 | 186612 | 1140.72 | 759 | 733 | 162.9 |
| C | 15 | 224 | 4757379 | 24890.22 | 697 | 691 | 191.1 |
| C | 2 | 12 | 1096153 | 5732.2 | 697 | 691 | 191.1 |
| C | 12 | 254 | 239671 | 1250.51 | 697 | 691 | 191.1 |
| D | 12 | 17 | 3898381 | 21554.29 | 637 | 607 | 180.8 |
| D | 6 | 42 | 2596764 | 14356.48 | 637 | 607 | 180.8 |
| D | 15 | 93 | 1339088 | 7401.66 | 637 | 607 | 180.8 |
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 |  |