ASTROSAT CZTI

Data Quality Report

Orbit 21889

Creation date: 2024-06-27T18:33:31.601803
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_041T01_9000003234_21889cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21889cztM0_level2_quad_clean.evt
Size (bytes)507,441,60095,506,560
Size483.9 MB 91.1 MB
Events in quadrant A3,436,079601,530
Events in quadrant B3,639,301614,199
Events in quadrant C3,409,416592,993
Events in quadrant D4,377,937565,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153012
B0157432
C0151792
D0180442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7440330.443548%
B7440550.739247%
C7440630.846774%
D74402002.688172%

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 7940 7441 2 2 0.03% 0.03%
B 7940 7441 7 7 0.09% 0.09%
C 7940 7441 0 0 0.00% 0.00%
D 7940 7441 188 188 2.37% 2.53%

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 4 2 31839 176.01 874 856 176.0
A 5 16 22991 125.74 874 856 176.0
A 13 254 14233 75.99 874 856 176.0
B 0 230 45662 267.06 878 857 167.8
B 3 64 40272 234.93 878 857 167.8
B 4 171 31404 182.07 878 857 167.8
C 14 238 131915 669.0 838 842 195.9
C 13 61 5774 25.17 838 842 195.9
C 8 128 4667 19.52 838 842 195.9
D 1 52 881581 4340.37 835 810 202.9
D 7 238 153991 754.86 835 810 202.9
D 13 174 81930 399.75 835 810 202.9

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