ASTROSAT CZTI

Data Quality Report

Orbit 26466

Creation date: 2024-06-27T19:29:23.750990
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/AS1A09_104T02_9000003826_26466cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26466cztM0_level2_quad_clean.evt
Size (bytes)655,004,16089,012,160
Size624.7 MB 84.9 MB
Events in quadrant A4,003,611555,171
Events in quadrant B4,012,408562,986
Events in quadrant C4,285,945537,695
Events in quadrant D6,988,489478,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172460
B0169930
C0177230
D0261670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80571732.147201%
B80562222.755710%
C80562933.637041%
D8057107813.379670%

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 8667 8059 2 2 0.02% 0.02%
B 8666 8056 5 5 0.06% 0.06%
C 8666 8057 26 26 0.30% 0.32%
D 8667 8060 826 826 9.53% 10.25%

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 6 16 118405 573.18 1006 983 204.9
A 13 254 13194 59.61 1006 983 204.9
A 3 137 9553 41.83 1006 983 204.9
B 0 244 26030 127.8 1004 979 196.0
B 12 111 24464 119.81 1004 979 196.0
B 0 230 21918 106.83 1004 979 196.0
C 2 16 260060 1130.85 965 973 229.1
C 14 238 150378 652.12 965 973 229.1
C 3 233 82859 357.41 965 973 229.1
D 7 80 2740630 12207.38 928 906 224.4
D 1 52 282539 1254.87 928 906 224.4
D 12 233 231551 1027.68 928 906 224.4

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