Observation information
- date-obs: 2025-05-24
- time-obs: 08:46:45.279100000
- date-end: 2025-05-24
- time-end: 10:46:38.263200000
- obs_id: C09_011T08_9000006472
- exposure: 2085.34374678
- 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_011T08_9000006472_52220cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006472_52220cztM0_level2_quad_clean.evt
|
| Size (bytes) | 870,672,960 | 71,228,160 |
| Size | 830.3 MB
| 67.9 MB
|
| Events in quadrant A | 3,945,910 | 587,604 |
| Events in quadrant B | 6,535,323 | 552,992 |
| Events in quadrant C | 8,116,080 | 412,414 |
| Events in quadrant D | 13,159,028 | 176,227 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15849 | 1 |
| B | 0 | 23682 | 1 |
| C | 0 | 28274 | 1 |
| D | 0 | 43385 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6118 | 217 | 3.546911% |
| B | 6119 | 1050 | 17.159667% |
| C | 6119 | 2031 | 33.191698% |
| D | 6119 | 4240 | 69.292368% |
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 | 7193 | 6118 | 124 | 124 | 1.72% | 2.03% |  |
| B | 7194 | 6119 | 691 | 691 | 9.61% | 11.29% |  |
| C | 7194 | 6119 | 1673 | 1673 | 23.26% | 27.34% |  |
| D | 7193 | 6118 | 4182 | 4182 | 58.14% | 68.36% |  |
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 | 12 | 3 | 636103 | 3937.9 | 651 | 636 | 161.4 |
| A | 4 | 95 | 190966 | 1179.45 | 651 | 636 | 161.4 |
| A | 4 | 249 | 132602 | 817.78 | 651 | 636 | 161.4 |
| B | 10 | 254 | 1899299 | 14400.48 | 618 | 595 | 131.9 |
| B | 5 | 32 | 1409681 | 10687.03 | 618 | 595 | 131.9 |
| B | 10 | 44 | 143751 | 1085.75 | 618 | 595 | 131.9 |
| C | 15 | 224 | 3810313 | 26137.75 | 525 | 520 | 145.8 |
| C | 15 | 231 | 1505455 | 10324.87 | 525 | 520 | 145.8 |
| C | 12 | 252 | 242093 | 1657.35 | 525 | 520 | 145.8 |
| D | 6 | 42 | 9158669 | 82292.3 | 384 | 365 | 111.3 |
| D | 15 | 93 | 682117 | 6125.91 | 384 | 365 | 111.3 |
| D | 8 | 176 | 631717 | 5673.04 | 384 | 365 | 111.3 |
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 |  |