Observation information
- date-obs: 2025-06-24
- time-obs: 00:48:12.972500000
- date-end: 2025-06-24
- time-end: 02:46:55.963800000
- obs_id: C09_011T07_9000006480
- exposure: 5055.53234142
- 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_9000006480_52855cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52855cztM0_level2_quad_clean.evt
|
| Size (bytes) | 705,055,680 | 85,864,320 |
| Size | 672.4 MB
| 81.9 MB
|
| Events in quadrant A | 5,630,554 | 599,410 |
| Events in quadrant B | 8,480,768 | 511,364 |
| Events in quadrant C | 3,692,368 | 566,768 |
| Events in quadrant D | 7,804,283 | 478,717 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21203 | 1 |
| B | 0 | 29629 | 1 |
| C | 0 | 15472 | 1 |
| D | 0 | 27644 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6353 | 268 | 4.218479% |
| B | 6354 | 1661 | 26.141014% |
| C | 6353 | 187 | 2.943491% |
| D | 6353 | 1158 | 18.227609% |
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 | 7123 | 6354 | 220 | 220 | 3.09% | 3.46% |  |
| B | 7124 | 6355 | 1350 | 1350 | 18.95% | 21.24% |  |
| C | 7123 | 6354 | 182 | 182 | 2.56% | 2.86% |  |
| D | 7123 | 6354 | 1235 | 1235 | 17.34% | 19.44% |  |
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 | 1553434 | 9409.25 | 656 | 639 | 165.0 |
| A | 3 | 14 | 692603 | 4192.99 | 656 | 639 | 165.0 |
| A | 3 | 62 | 463213 | 2802.99 | 656 | 639 | 165.0 |
| B | 8 | 3 | 5566879 | 42747.23 | 608 | 588 | 130.2 |
| B | 1 | 255 | 135408 | 1035.37 | 608 | 588 | 130.2 |
| B | 0 | 171 | 78655 | 599.53 | 608 | 588 | 130.2 |
| C | 13 | 3 | 479637 | 2708.06 | 633 | 628 | 176.9 |
| C | 15 | 224 | 190652 | 1074.29 | 633 | 628 | 176.9 |
| C | 10 | 171 | 71038 | 398.06 | 633 | 628 | 176.9 |
| D | 8 | 176 | 2467046 | 14370.59 | 598 | 571 | 171.6 |
| D | 12 | 2 | 1929731 | 11239.99 | 598 | 571 | 171.6 |
| D | 3 | 224 | 523154 | 3044.76 | 598 | 571 | 171.6 |
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 |  |