ASTROSAT CZTI

Data Quality Report

Orbit 56671

Creation date: 2026-03-20T08:11:12.555970
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_083T06_9000006558_56671cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56671cztM0_level2_quad_clean.evt
Size (bytes)529,678,080119,522,880
Size505.1 MB 114.0 MB
Events in quadrant A5,476,555749,687
Events in quadrant B3,832,071855,448
Events in quadrant C4,158,726743,790
Events in quadrant D5,487,230686,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223821
B0176921
C0185891
D0224201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83985256.251488%
B8399550.654840%
C8399730.869151%
D83992252.678890%

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 8892 8397 503 503 5.66% 5.99%
B 8893 8398 9 9 0.10% 0.11%
C 8893 8399 64 64 0.72% 0.76%
D 8893 8398 178 178 2.00% 2.12%

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 8 26 1361232 6225.96 890 867 218.5
A 12 3 370469 1691.55 890 867 218.5
A 0 8 77411 350.32 890 867 218.5
B 4 21 57740 294.25 906 872 193.3
B 0 245 35080 177.0 906 872 193.3
B 0 63 29717 149.25 906 872 193.3
C 12 252 232246 964.25 881 871 240.0
C 14 96 193303 801.95 881 871 240.0
C 6 223 54789 224.7 881 871 240.0
D 10 199 512394 2109.41 868 830 242.5
D 2 249 481825 1983.36 868 830 242.5
D 2 31 406189 1671.48 868 830 242.5

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