ASTROSAT CZTI

Data Quality Report

Orbit 20067

Creation date: 2024-06-27T18:10:51.063601
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/AS1T03_120T01_9000002990_20067cztM0_level2.evt modeM0/AS1T03_120T01_9000002990_20067cztM0_level2_quad_clean.evt
Size (bytes)712,523,520152,959,680
Size679.5 MB 145.9 MB
Events in quadrant A4,748,3961,049,653
Events in quadrant B4,292,1281,056,054
Events in quadrant C3,873,1911,011,333
Events in quadrant D8,126,760962,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192401
B0177541
C0165741
D0296951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79713334.177644%
B79721892.370798%
C79721441.806322%
D79727018.793276%

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 8371 7973 169 169 2.02% 2.12%
B 8372 7974 26 26 0.31% 0.33%
C 8372 7974 0 0 0.00% 0.00%
D 8372 7974 271 271 3.24% 3.40%

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 14 238 711013 3526.3 988 970 201.4
A 14 254 204649 1011.53 988 970 201.4
A 15 192 9876 44.23 988 970 201.4
B 7 220 69380 357.93 994 972 191.1
B 0 197 67348 347.3 994 972 191.1
B 4 80 61027 314.22 994 972 191.1
C 14 238 150326 681.28 945 955 219.3
C 3 233 28385 125.11 945 955 219.3
C 13 61 6732 26.35 945 955 219.3
D 1 52 3577653 15614.08 935 911 229.1
D 12 218 623499 2717.88 935 911 229.1
D 7 38 146304 634.71 935 911 229.1

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