ASTROSAT CZTI

Data Quality Report

Orbit 13408

Creation date: 2024-06-27T16:40:23.059551
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/AS1A04_103T01_9000001988_13408cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13408cztM0_level2_quad_clean.evt
Size (bytes)543,274,560106,560,000
Size518.1 MB 101.6 MB
Events in quadrant A3,567,318683,613
Events in quadrant B3,739,931701,815
Events in quadrant C3,624,162680,422
Events in quadrant D4,997,028623,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159643
B0163142
C0159352
D0201462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7723560.725107%
B77231101.424317%
C7723500.647417%
D77234435.736113%

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 7944 7724 2 2 0.03% 0.03%
B 7944 7724 11 11 0.14% 0.14%
C 7944 7725 3 3 0.04% 0.04%
D 7944 7725 454 454 5.72% 5.88%

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 15 69 38850 203.42 909 888 186.6
A 1 162 20324 104.15 909 888 186.6
A 0 226 8061 38.44 909 888 186.6
B 4 142 80770 457.34 915 891 174.7
B 3 64 43740 245.33 915 891 174.7
B 12 111 20945 114.82 915 891 174.7
C 3 233 98084 469.81 891 895 206.9
C 14 220 52347 248.72 891 895 206.9
C 13 61 6332 26.28 891 895 206.9
D 5 222 1156608 5595.41 859 834 206.6
D 8 195 340969 1646.68 859 834 206.6
D 1 52 138538 666.66 859 834 206.6

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