Observation information
- date-obs: 2025-07-27
- time-obs: 01:30:58.488100000
- date-end: 2025-07-27
- time-end: 03:31:01.442800000
- obs_id: C09_011T06_9000006490
- exposure: 4754.64140952
- 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_011T06_9000006490_53166cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53166cztM0_level2_quad_clean.evt
|
| Size (bytes) | 631,486,080 | 81,311,040 |
| Size | 602.2 MB
| 77.5 MB
|
| Events in quadrant A | 4,539,100 | 549,179 |
| Events in quadrant B | 7,735,547 | 497,367 |
| Events in quadrant C | 6,271,057 | 484,825 |
| Events in quadrant D | 4,361,321 | 508,491 |
Level1 data integrity
| 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 SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17998 | 1 |
| B | 0 | 27206 | 1 |
| C | 0 | 22895 | 1 |
| D | 0 | 17364 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6043 | 522 | 8.638094% |
| B | 6044 | 1638 | 27.101257% |
| C | 6044 | 903 | 14.940437% |
| D | 6044 | 322 | 5.327598% |
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 | 7203 | 6044 | 440 | 440 | 6.11% | 7.28% |  |
| B | 7204 | 6044 | 1192 | 1192 | 16.55% | 19.72% |  |
| C | 7204 | 6045 | 934 | 934 | 12.97% | 15.45% |  |
| D | 7204 | 6045 | 299 | 299 | 4.15% | 4.95% |  |
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 | 3 | 62 | 1053218 | 7052.29 | 592 | 577 | 149.3 |
| A | 4 | 249 | 477280 | 3193.73 | 592 | 577 | 149.3 |
| A | 8 | 249 | 340340 | 2276.28 | 592 | 577 | 149.3 |
| B | 10 | 191 | 2978145 | 25524.73 | 551 | 532 | 116.7 |
| B | 1 | 239 | 1637968 | 14036.45 | 551 | 532 | 116.7 |
| B | 4 | 81 | 377032 | 3227.44 | 551 | 532 | 116.7 |
| C | 1 | 241 | 1367267 | 8687.13 | 562 | 556 | 157.3 |
| C | 0 | 240 | 1173769 | 7457.21 | 562 | 556 | 157.3 |
| C | 15 | 224 | 665028 | 4223.54 | 562 | 556 | 157.3 |
| D | 15 | 125 | 759416 | 4527.41 | 576 | 548 | 167.6 |
| D | 10 | 172 | 445728 | 2655.94 | 576 | 548 | 167.6 |
| D | 2 | 120 | 264751 | 1576.24 | 576 | 548 | 167.6 |
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 |  |