ASTROSAT CZTI

Data Quality Report

Orbit 29390

Creation date: 2024-06-27T20:03:28.443298
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/AS1A10_101T19_9000004228_29390cztM0_level2.evt modeM0/AS1A10_101T19_9000004228_29390cztM0_level2_quad_clean.evt
Size (bytes)968,584,32085,527,360
Size923.7 MB 81.6 MB
Events in quadrant A4,989,560534,125
Events in quadrant B3,990,381548,064
Events in quadrant C4,556,319530,717
Events in quadrant D15,268,998431,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200052
B0167452
C0183252
D0507875

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78193244.143752%
B78201792.289003%
C78204846.189258%
D7819478761.222663%

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 8409 7821 149 149 1.77% 1.91%
B 8410 7822 7 7 0.08% 0.09%
C 8410 7822 1 1 0.01% 0.01%
D 8409 7821 4195 4195 49.89% 53.64%

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 1 113 1189506 5970.04 979 956 199.1
A 13 170 19255 91.92 979 956 199.1
A 13 254 16029 75.71 979 956 199.1
B 5 255 52548 274.84 977 952 187.7
B 10 245 39288 204.21 977 952 187.7
B 12 111 23301 119.05 977 952 187.7
C 3 233 545222 2477.3 933 937 219.7
C 14 238 214695 972.91 933 937 219.7
C 14 254 95328 429.62 933 937 219.7
D 8 195 6281860 37277.07 702 682 168.5
D 1 52 3944459 23405.24 702 682 168.5
D 12 33 1727128 10245.98 702 682 168.5

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