Observation information
- date-obs: 2025-07-22
- time-obs: 22:10:21.237900000
- date-end: 2025-07-23
- time-end: 00:39:25.217500000
- obs_id: C09_011T07_9000006488
- exposure: 1768.47238314
- 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_53105cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53105cztM0_level2_quad_clean.evt
|
| Size (bytes) | 851,091,840 | 81,233,280 |
| Size | 811.7 MB
| 77.5 MB
|
| Events in quadrant A | 15,000,340 | 166,695 |
| Events in quadrant B | 3,745,433 | 704,218 |
| Events in quadrant C | 8,219,295 | 514,981 |
| Events in quadrant D | 4,014,895 | 601,960 |
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 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 49063 | 2 |
| B | 0 | 16199 | 2 |
| C | 0 | 29137 | 2 |
| D | 0 | 16983 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6769 | 5357 | 79.140198% |
| B | 6770 | 107 | 1.580502% |
| C | 6770 | 1539 | 22.732644% |
| D | 6770 | 159 | 2.348597% |
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 | 8944 | 6769 | 5090 | 5090 | 56.91% | 75.20% |  |
| B | 8945 | 6772 | 53 | 53 | 0.59% | 0.78% |  |
| C | 8945 | 6772 | 1502 | 1502 | 16.79% | 22.18% |  |
| D | 8945 | 6772 | 161 | 161 | 1.80% | 2.38% |  |
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 | 11457745 | 101502.35 | 446 | 435 | 112.9 |
| A | 0 | 8 | 1385925 | 12274.3 | 446 | 435 | 112.9 |
| A | 6 | 248 | 128975 | 1138.76 | 446 | 435 | 112.9 |
| B | 4 | 171 | 350296 | 2324.38 | 698 | 675 | 150.4 |
| B | 4 | 81 | 95276 | 628.93 | 698 | 675 | 150.4 |
| B | 14 | 167 | 91198 | 601.82 | 698 | 675 | 150.4 |
| C | 15 | 224 | 1678164 | 9677.65 | 623 | 617 | 173.3 |
| C | 4 | 5 | 1190399 | 6863.77 | 623 | 617 | 173.3 |
| C | 1 | 241 | 1188046 | 6850.19 | 623 | 617 | 173.3 |
| D | 2 | 249 | 444466 | 2281.72 | 682 | 650 | 194.5 |
| D | 10 | 172 | 201240 | 1031.26 | 682 | 650 | 194.5 |
| D | 0 | 5 | 112034 | 572.64 | 682 | 650 | 194.5 |
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 |  |