ASTROSAT CZTI

Data Quality Report

Orbit 20220302_C07_004T01_9000004990_level2

Creation date: 2022-03-08T22:39:04.365427
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/AS1C07_004T01_9000004990cztM0_level2_bc.evt modeM0/AS1C07_004T01_9000004990cztM0_level2_quad_clean.evt
Size (bytes)11,979,924,4802,851,122,240
Size11.2 GB 2.7 GB
Events in quadrant A55,908,43117,921,868
Events in quadrant B72,463,40918,164,381
Events in quadrant C64,316,43418,297,983
Events in quadrant D154,292,50215,991,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08990

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04923520
B05658710
C05045400
D08385650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047600
B047600
C047600
D047600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23329113350.572247%
B23328972853.122736%
C23329512520.536660%
D2332822684011.505388%

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 343166 233335 480 480 0.14% 0.21%
B 343166 233297 590 590 0.17% 0.25%
C 343166 233304 269 269 0.08% 0.12%
D 343166 233277 10438 10438 3.04% 4.47%

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 15 169 3437885 1279.7 12268 12093 2677.0
A 10 83 1432127 530.45 12268 12093 2677.0
A 7 32 1026366 378.88 12268 12093 2677.0
B 5 172 12134872 5054.21 12406 12158 2398.5
B 5 255 5636171 2344.77 12406 12158 2398.5
B 0 190 2210754 916.64 12406 12158 2398.5
C 15 214 9456286 3427.91 12258 12211 2755.1
C 0 10 2663395 962.3 12258 12211 2755.1
C 14 67 2619010 946.19 12258 12211 2755.1
D 8 195 38244844 14082.23 11559 11219 2715.0
D 1 52 28233738 10394.93 11559 11219 2715.0
D 2 250 12904007 4748.68 11559 11219 2715.0

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