ASTROSAT CZTI

Data Quality Report

Orbit 21643

Creation date: 2024-06-27T18:30:35.547977
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/AS1A06_002T02_9000003206_21643cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21643cztM0_level2_quad_clean.evt
Size (bytes)488,655,36083,206,080
Size466.0 MB 79.4 MB
Events in quadrant A3,442,450511,091
Events in quadrant B3,762,156520,851
Events in quadrant C3,485,849496,127
Events in quadrant D3,611,758482,830

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149762
B0155442
C0150202
D0156242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73141371.873120%
B73141812.474706%
C73141542.105551%
D73141221.668034%

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 7749 7316 0 0 0.00% 0.00%
B 7749 7316 3 3 0.04% 0.04%
C 7749 7316 0 0 0.00% 0.00%
D 7749 7316 26 26 0.34% 0.36%

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 11214 57.25 893 873 180.6
A 0 226 7864 38.71 893 873 180.6
A 3 137 7702 37.81 893 873 180.6
B 0 229 71796 415.81 895 873 170.6
B 3 64 48385 278.55 895 873 170.6
B 0 189 44206 254.05 895 873 170.6
C 14 238 136724 675.68 857 858 201.1
C 10 22 8196 36.49 857 858 201.1
C 13 61 5901 25.08 857 858 201.1
D 2 136 115839 546.88 867 841 210.3
D 1 52 108052 509.85 867 841 210.3
D 13 172 33928 157.35 867 841 210.3

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