ASTROSAT CZTI

Data Quality Report

Orbit 20190717_A05_072T04_9000003040_level2

Creation date: 2025-12-02T12:23:59.485090
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_072T04_9000003040cztM0_level2.fits modeM0/AS1A05_072T04_9000003040cztM0_level2_quad_clean.evt
Size (bytes)575,331,840505,362,240
Size548.7 MB 482.0 MB
Events in quadrant A3,525,7202,949,324
Events in quadrant B3,390,1182,937,388
Events in quadrant C3,468,2382,843,134
Events in quadrant D2,979,4882,514,125

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01224720
B01240870
C01240690
D01568220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012000
B012000
C012000
D012000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A592116081.026836%
B592118191.383189%
C592119221.557143%
D5921125184.252588%

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 68246 59211 0 0 0.00% 0.00%
B 68246 59211 0 0 0.00% 0.00%
C 68246 59211 0 0 0.00% 0.00%
D 68246 59207 0 0 0.00% 0.00%

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 29 3203 10.31 918 861 227.1
A 7 110 2894 8.95 918 861 227.1
A 9 19 2680 8.01 918 861 227.1
B 2 9 2741 10.79 895 855 174.7
B 2 8 2286 8.19 895 855 174.7
B 3 17 2239 7.92 895 855 174.7
C 2 191 2417 6.64 916 859 234.5
C 3 126 2370 6.44 916 859 234.5
C 12 241 2335 6.29 916 859 234.5
D 10 189 2142 6.03 851 775 226.6
D 6 231 2137 6.01 851 775 226.6
D 3 14 2097 5.83 851 775 226.6

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