ASTROSAT CZTI

Data Quality Report

Orbit 22994

Creation date: 2024-06-27T18:48:28.309585
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/AS1A08_004T03_9000003400_22994cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_22994cztM0_level2_quad_clean.evt
Size (bytes)1,134,204,480202,170,240
Size1.1 GB 192.8 MB
Events in quadrant A7,700,6171,269,152
Events in quadrant B8,207,4221,274,942
Events in quadrant C7,863,4291,224,536
Events in quadrant D9,446,6631,200,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341422
B0351732
C0343672
D0387532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167271330.795122%
B167281650.986370%
C167281951.165710%
D167281921.147776%

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 17867 16729 0 0 0.00% 0.00%
B 17868 16730 2 2 0.01% 0.01%
C 17868 16730 1 1 0.01% 0.01%
D 17868 16730 71 71 0.40% 0.42%

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 13 254 26283 60.54 1993 1948 401.9
A 3 137 17614 38.98 1993 1948 401.9
A 0 226 17091 37.67 1993 1948 401.9
B 0 189 185217 483.83 1982 1933 378.8
B 0 190 111789 290.0 1982 1933 378.8
B 10 247 109573 284.15 1982 1933 378.8
C 14 238 300657 665.31 1917 1929 449.0
C 7 247 45080 96.1 1917 1929 449.0
C 0 10 31805 66.54 1917 1929 449.0
D 1 52 1263477 2679.5 1943 1890 470.8
D 13 153 250258 527.51 1943 1890 470.8
D 12 227 89290 185.63 1943 1890 470.8

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