Observation information
- date-obs: 2025-07-22
- time-obs: 20:48:17.249800000
- date-end: 2025-07-22
- time-end: 22:50:36.232900000
- obs_id: C09_011T07_9000006488
- exposure: 1533.60157961
- 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_53104cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53104cztM0_level2_quad_clean.evt
|
| Size (bytes) | 806,172,480 | 73,094,400 |
| Size | 768.8 MB
| 69.7 MB
|
| Events in quadrant A | 14,033,367 | 137,437 |
| Events in quadrant B | 3,410,182 | 638,100 |
| Events in quadrant C | 8,362,108 | 439,971 |
| Events in quadrant D | 3,546,681 | 556,251 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45936 | 1 |
| B | 0 | 14803 | 1 |
| C | 0 | 29315 | 1 |
| D | 0 | 15074 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6315 | 5084 | 80.506730% |
| B | 6315 | 109 | 1.726049% |
| C | 6315 | 1721 | 27.252573% |
| D | 6315 | 69 | 1.092637% |
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 | 7340 | 6315 | 4756 | 4756 | 64.80% | 75.31% |  |
| B | 7340 | 6316 | 62 | 62 | 0.84% | 0.98% |  |
| C | 7339 | 6315 | 1630 | 1630 | 22.21% | 25.81% |  |
| D | 7340 | 6316 | 56 | 56 | 0.76% | 0.89% |  |
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 | 11148987 | 108446.47 | 399 | 389 | 102.8 |
| A | 12 | 80 | 586708 | 5703.34 | 399 | 389 | 102.8 |
| A | 3 | 62 | 270277 | 2625.3 | 399 | 389 | 102.8 |
| B | 2 | 249 | 227136 | 1645.24 | 643 | 621 | 137.7 |
| B | 10 | 28 | 129087 | 933.08 | 643 | 621 | 137.7 |
| B | 4 | 81 | 100827 | 727.82 | 643 | 621 | 137.7 |
| C | 15 | 224 | 1826368 | 11500.51 | 568 | 565 | 158.8 |
| C | 9 | 38 | 1577867 | 9935.23 | 568 | 565 | 158.8 |
| C | 4 | 5 | 882200 | 5553.31 | 568 | 565 | 158.8 |
| D | 2 | 120 | 147010 | 804.7 | 635 | 608 | 181.9 |
| D | 2 | 249 | 123037 | 672.93 | 635 | 608 | 181.9 |
| D | 2 | 62 | 102020 | 557.41 | 635 | 608 | 181.9 |
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 |  |