ASTROSAT CZTI

Data Quality Report

Orbit 54626

Creation date: 2025-11-03T11:11:36.579442
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/AS1A14_066T07_9000006522_54626cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54626cztM0_level2_quad_clean.evt
Size (bytes)558,331,200120,519,360
Size532.5 MB 114.9 MB
Events in quadrant A6,540,014736,791
Events in quadrant B4,001,293856,668
Events in quadrant C4,397,549755,446
Events in quadrant D5,057,423700,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255970
B0185930
C0196030
D0211852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86447758.965757%
B8645470.543667%
C8645911.052632%
D86442572.973161%

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 8643 8643 701 701 8.11% 8.11%
B 8644 8644 10 10 0.12% 0.12%
C 8644 8644 65 65 0.75% 0.75%
D 8643 8643 263 263 3.04% 3.04%

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 7 190 1424740 6444.98 896 874 220.9
A 7 14 950195 4297.0 896 874 220.9
A 11 3 265030 1195.67 896 874 220.9
B 5 172 286398 1476.03 903 868 193.4
B 10 247 70566 360.3 903 868 193.4
B 12 111 24054 119.86 903 868 193.4
C 4 5 271480 1112.27 887 882 243.3
C 15 157 201831 825.98 887 882 243.3
C 15 147 118197 482.21 887 882 243.3
D 8 240 718950 2887.89 882 844 248.7
D 2 62 231775 928.7 882 844 248.7
D 2 172 166195 664.97 882 844 248.7

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