ASTROSAT CZTI

Data Quality Report

Orbit 28012

Creation date: 2024-06-27T19:47:01.131223
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_021T08_9000004042_28012cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_28012cztM0_level2_quad_clean.evt
Size (bytes)576,138,24082,964,160
Size549.4 MB 79.1 MB
Events in quadrant A3,614,062513,928
Events in quadrant B3,658,173524,514
Events in quadrant C4,245,752499,245
Events in quadrant D5,452,897483,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148570
B0149690
C0169460
D0208580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70411722.442835%
B70412032.883113%
C70412854.047720%
D70414516.405340%

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 7626 7041 0 0 0.00% 0.00%
B 7626 7041 4 4 0.05% 0.06%
C 7626 7041 10 10 0.13% 0.14%
D 7626 7041 260 260 3.41% 3.69%

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 0 13 44942 237.04 920 900 185.8
A 13 254 12410 61.95 920 900 185.8
A 3 137 8936 43.25 920 900 185.8
B 10 245 35897 200.5 910 888 174.6
B 4 200 26690 147.77 910 888 174.6
B 12 111 21514 118.13 910 888 174.6
C 3 233 658677 3165.04 884 890 207.8
C 14 238 141015 674.23 884 890 207.8
C 13 61 5963 24.41 884 890 207.8
D 1 52 1209490 5694.57 886 863 212.2
D 8 195 471282 2216.43 886 863 212.2
D 2 250 269162 1264.12 886 863 212.2

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