ASTROSAT CZTI

Data Quality Report

Orbit 21269

Creation date: 2024-06-27T18:25:40.649616
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_037T01_9000003140_21269cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21269cztM0_level2_quad_clean.evt
Size (bytes)705,859,20098,161,920
Size673.2 MB 93.6 MB
Events in quadrant A3,794,015618,119
Events in quadrant B3,996,498628,717
Events in quadrant C3,825,549612,438
Events in quadrant D9,215,860553,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166412
B0170752
C0166352
D0329582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8056831.030288%
B80571241.539034%
C80571251.551446%
D8057135416.805263%

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 8681 8058 0 0 0.00% 0.00%
B 8682 8059 11 11 0.13% 0.14%
C 8682 8060 1 1 0.01% 0.01%
D 8682 8060 1453 1453 16.74% 18.03%

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 11952 54.76 980 955 200.8
A 13 252 11106 50.55 980 955 200.8
A 0 226 8466 37.4 980 955 200.8
B 0 197 36422 185.15 982 956 191.6
B 3 64 33892 171.94 982 956 191.6
B 12 111 22854 114.32 982 956 191.6
C 14 238 144530 645.25 941 945 222.5
C 0 207 7073 27.54 941 945 222.5
C 13 61 6541 25.15 941 945 222.5
D 13 174 3220743 14583.11 901 874 220.8
D 1 52 2004083 9072.74 901 874 220.8
D 1 20 317581 1434.4 901 874 220.8

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