Observation information
- date-obs: 2025-07-22
- time-obs: 18:56:49.265800000
- date-end: 2025-07-22
- time-end: 21:06:36.247400000
- obs_id: C09_011T07_9000006488
- exposure: 1265.48903072
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T07_9000006488_53102cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53102cztM0_level2_quad_clean.evt
|
| Size (bytes) | 968,034,240 | 76,904,640 |
| Size | 923.2 MB
| 73.3 MB
|
| Events in quadrant A | 15,857,531 | 118,674 |
| Events in quadrant B | 3,588,291 | 704,409 |
| Events in quadrant C | 10,630,535 | 438,197 |
| Events in quadrant D | 5,229,617 | 591,849 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 51717 | 2 |
| B | 0 | 15585 | 2 |
| C | 0 | 36325 | 5 |
| D | 0 | 20550 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6817 | 5822 | 85.404137% |
| B | 6817 | 101 | 1.481590% |
| C | 6816 | 2510 | 36.825117% |
| D | 6816 | 565 | 8.289319% |
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 | 7651 | 6816 | 5511 | 5511 | 72.03% | 80.85% |  |
| B | 7652 | 6818 | 43 | 43 | 0.56% | 0.63% |  |
| C | 7651 | 6816 | 2209 | 2209 | 28.87% | 32.41% |  |
| D | 7651 | 6817 | 464 | 464 | 6.06% | 6.81% |  |
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 | 191 | 13138225 | 130943.66 | 383 | 372 | 100.3 |
| A | 12 | 80 | 557473 | 5552.57 | 383 | 372 | 100.3 |
| A | 0 | 8 | 245451 | 2442.68 | 383 | 372 | 100.3 |
| B | 14 | 167 | 118103 | 774.06 | 713 | 690 | 151.7 |
| B | 4 | 81 | 117783 | 771.95 | 713 | 690 | 151.7 |
| B | 0 | 213 | 91195 | 596.66 | 713 | 690 | 151.7 |
| C | 9 | 38 | 4914517 | 29209.83 | 604 | 598 | 168.2 |
| C | 15 | 224 | 1749822 | 10397.92 | 604 | 598 | 168.2 |
| C | 15 | 157 | 458729 | 2723.27 | 604 | 598 | 168.2 |
| D | 10 | 172 | 1325560 | 6571.82 | 695 | 665 | 201.6 |
| D | 0 | 5 | 237499 | 1174.76 | 695 | 665 | 201.6 |
| D | 2 | 249 | 216455 | 1070.37 | 695 | 665 | 201.6 |
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 |  |