ASTROSAT CZTI

Data Quality Report

Orbit 19546

Creation date: 2024-06-27T18:04:13.351018
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_142T01_9000002904_19546cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19546cztM0_level2_quad_clean.evt
Size (bytes)562,167,36084,712,320
Size536.1 MB 80.8 MB
Events in quadrant A3,830,680512,576
Events in quadrant B4,077,144511,587
Events in quadrant C4,082,075497,437
Events in quadrant D4,494,637489,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165062
B0171062
C0170122
D0185972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79641081.356102%
B79641742.184832%
C79652182.736974%
D79651251.569366%

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 8669 7966 1 1 0.01% 0.01%
B 8669 7966 21 21 0.24% 0.26%
C 8670 7967 0 0 0.00% 0.00%
D 8670 7967 59 59 0.68% 0.74%

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 5 16 14171 66.03 987 963 200.0
A 13 254 11556 52.96 987 963 200.0
A 0 226 8526 37.81 987 963 200.0
B 0 197 68158 356.7 978 952 188.4
B 3 64 60758 317.43 978 952 188.4
B 0 230 34722 179.24 978 952 188.4
C 3 233 188008 852.49 937 942 219.4
C 14 238 145905 660.62 937 942 219.4
C 7 247 81120 365.38 937 942 219.4
D 1 52 708467 3001.57 959 933 235.7
D 12 233 87890 368.9 959 933 235.7
D 12 225 43386 180.1 959 933 235.7

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