ASTROSAT CZTI

Data Quality Report

Orbit 20820

Creation date: 2024-06-27T18:19:56.943716
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/AS1A05_013T01_9000003070_20820cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20820cztM0_level2_quad_clean.evt
Size (bytes)503,271,36087,252,480
Size480.0 MB 83.2 MB
Events in quadrant A2,933,474579,643
Events in quadrant B3,318,329571,126
Events in quadrant C2,971,014557,559
Events in quadrant D5,589,076491,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014012
B014012
C014010
D014012

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013931983
B0149791041
C013998988
D0230282050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B031
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6351320.503858%
B63421011.592558%
C6354470.739692%
D626366010.538081%

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 7055 6439 0 0 0.00% 0.00%
B 7162 6450 31 31 0.43% 0.48%
C 7073 6453 0 0 0.00% 0.00%
D 7059 6342 596 596 8.44% 9.40%

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 5 203 7032 40.48 761 745 155.3
A 0 226 6707 38.38 761 745 155.3
A 3 137 6034 34.05 761 745 155.3
B 7 220 80913 562.29 750 731 142.6
B 4 171 64087 444.29 750 731 142.6
B 0 219 48986 338.39 750 731 142.6
C 14 238 113918 665.69 720 727 170.0
C 9 54 23213 132.24 720 727 170.0
C 10 91 21657 123.09 720 727 170.0
D 1 52 1489529 8932.54 687 667 166.7
D 1 20 578080 3464.23 687 667 166.7
D 7 38 329544 1973.12 687 667 166.7

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