ASTROSAT CZTI

Data Quality Report

Orbit 25820

Creation date: 2024-06-27T19:21:47.149408
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_068T01_9000003756_25820cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25820cztM0_level2_quad_clean.evt
Size (bytes)613,290,240103,282,560
Size584.9 MB 98.5 MB
Events in quadrant A3,297,999715,681
Events in quadrant B3,203,168712,521
Events in quadrant C3,390,493665,628
Events in quadrant D8,255,668594,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137240
B0134760
C0141190
D0289300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6292610.969485%
B6291610.969639%
C62921121.780038%
D6292182629.020979%

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 7387 6292 0 0 0.00% 0.00%
B 7386 6291 0 0 0.00% 0.00%
C 7387 6292 0 0 0.00% 0.00%
D 7387 6292 1771 1771 23.97% 28.15%

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 0 13 128565 772.9 822 807 165.3
A 13 254 7948 43.2 822 807 165.3
A 0 226 7410 39.95 822 807 165.3
B 0 219 27037 170.34 801 783 154.1
B 15 33 18484 114.85 801 783 154.1
B 12 111 18351 113.98 801 783 154.1
C 3 233 277373 1546.92 765 770 178.8
C 14 238 123163 684.49 765 770 178.8
C 4 175 9501 48.83 765 770 178.8
D 7 223 4656738 30712.67 636 622 151.6
D 7 80 709921 4678.68 636 622 151.6
D 1 52 210069 1381.55 636 622 151.6

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