ASTROSAT CZTI

Data Quality Report

Orbit 58473

Creation date: 2026-07-19T13:23:17.489257
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_044T04_9000006592_58473cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58473cztM0_level2_quad_clean.evt
Size (bytes)528,275,520122,160,960
Size503.8 MB 116.5 MB
Events in quadrant A4,300,962794,305
Events in quadrant B4,775,558851,638
Events in quadrant C5,051,008757,752
Events in quadrant D4,771,403708,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187851
B0197941
C0209911
D0202511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84432142.534644%
B84433764.453393%
C84433283.884875%
D84432853.375577%

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 8933 8444 21 21 0.24% 0.25%
B 8933 8444 26 26 0.29% 0.31%
C 8933 8444 176 176 1.97% 2.08%
D 8933 8444 171 171 1.91% 2.03%

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 10 17 233498 949.9 984 957 244.8
A 12 114 82228 331.98 984 957 244.8
A 12 80 62915 253.09 984 957 244.8
B 5 172 480542 2297.29 968 930 208.8
B 2 249 161226 767.8 968 930 208.8
B 10 247 99519 472.23 968 930 208.8
C 5 10 537949 2073.11 945 938 259.0
C 6 223 233034 896.0 945 938 259.0
C 4 5 224726 863.93 945 938 259.0
D 10 86 428978 1615.5 942 901 265.0
D 8 240 389573 1466.79 942 901 265.0
D 5 173 64142 238.66 942 901 265.0

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