Observation information
- date-obs: 2025-05-18
- time-obs: 15:46:11.402000000
- date-end: 2025-05-18
- time-end: 17:40:45.386400000
- obs_id: C09_011T07_9000006470
- exposure: 1608.19366872
- 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_9000006470_52135cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52135cztM0_level2_quad_clean.evt
|
| Size (bytes) | 774,296,640 | 69,304,320 |
| Size | 738.4 MB
| 66.1 MB
|
| Events in quadrant A | 4,266,742 | 543,659 |
| Events in quadrant B | 4,206,324 | 558,325 |
| Events in quadrant C | 6,434,646 | 452,536 |
| Events in quadrant D | 13,308,343 | 141,533 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 116 | 0 |
| B | 0 | 116 | 0 |
| C | 0 | 116 | 0 |
| D | 0 | 116 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16527 | 1 |
| B | 0 | 16493 | 1 |
| C | 0 | 23111 | 6 |
| D | 0 | 43458 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5755 | 331 | 5.751520% |
| B | 5755 | 572 | 9.939183% |
| C | 5754 | 1243 | 21.602364% |
| D | 5754 | 4437 | 77.111575% |
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 | 6875 | 5756 | 197 | 197 | 2.87% | 3.42% |  |
| B | 6875 | 5755 | 283 | 283 | 4.12% | 4.92% |  |
| C | 6874 | 5755 | 973 | 973 | 14.15% | 16.91% |  |
| D | 6873 | 5753 | 4229 | 4229 | 61.53% | 73.51% |  |
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 | 6 | 162 | 599132 | 3950.88 | 600 | 587 | 151.5 |
| A | 7 | 160 | 228913 | 1507.14 | 600 | 587 | 151.5 |
| A | 14 | 254 | 162389 | 1068.02 | 600 | 587 | 151.5 |
| B | 12 | 32 | 974815 | 7894.43 | 583 | 564 | 123.4 |
| B | 4 | 81 | 320764 | 2594.6 | 583 | 564 | 123.4 |
| B | 5 | 172 | 128448 | 1036.25 | 583 | 564 | 123.4 |
| C | 15 | 224 | 3359202 | 22328.24 | 548 | 544 | 150.4 |
| C | 15 | 193 | 313260 | 2078.93 | 548 | 544 | 150.4 |
| C | 15 | 231 | 84402 | 557.49 | 548 | 544 | 150.4 |
| D | 15 | 94 | 4390260 | 40820.28 | 369 | 352 | 107.5 |
| D | 6 | 42 | 4320873 | 40175.07 | 369 | 352 | 107.5 |
| D | 12 | 3 | 1038027 | 9648.99 | 369 | 352 | 107.5 |
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 |  |