ASTROSAT CZTI

Data Quality Report

Orbit 21243

Creation date: 2024-06-27T18:25:21.638307
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/AS1A05_037T01_9000003140_21243cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21243cztM0_level2_quad_clean.evt
Size (bytes)682,476,48086,889,600
Size650.9 MB 82.9 MB
Events in quadrant A3,853,218556,516
Events in quadrant B4,145,890568,849
Events in quadrant C3,678,952554,478
Events in quadrant D8,479,799426,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159362
B0169072
C0155542
D0302752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75341331.765331%
B75351702.256138%
C75351752.322495%
D7535219529.130723%

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 9099 7534 6 6 0.07% 0.08%
B 9100 7535 13 13 0.14% 0.17%
C 9100 7535 1 1 0.01% 0.01%
D 9099 7534 1949 1949 21.42% 25.87%

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 15 236 112678 584.09 939 916 191.3
A 5 16 68135 351.3 939 916 191.3
A 12 96 28032 141.71 939 916 191.3
B 3 64 298696 1638.69 939 913 181.7
B 0 197 64228 348.42 939 913 181.7
B 4 216 24411 129.31 939 913 181.7
C 14 238 138505 646.81 902 907 212.7
C 0 207 12890 56.33 902 907 212.7
C 3 233 9131 38.66 902 907 212.7
D 1 239 5163420 28883.37 731 712 178.7
D 1 52 173322 965.69 731 712 178.7
D 10 199 107001 594.65 731 712 178.7

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