ASTROSAT CZTI

Data Quality Report

Orbit 20979

Creation date: 2024-06-27T18:22:19.076098
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_133T01_9000003092_20979cztM0_level2.evt modeM0/AS1T03_133T01_9000003092_20979cztM0_level2_quad_clean.evt
Size (bytes)521,046,72091,944,000
Size496.9 MB 87.7 MB
Events in quadrant A3,600,205576,768
Events in quadrant B3,759,976577,252
Events in quadrant C3,648,735560,719
Events in quadrant D4,254,788541,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156382
B0159092
C0156162
D0176402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76061692.221930%
B76051802.366864%
C76051852.432610%
D76062753.615567%

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 8221 7609 0 0 0.00% 0.00%
B 8220 7608 3 3 0.04% 0.04%
C 8220 7608 0 0 0.00% 0.00%
D 8221 7609 111 111 1.35% 1.46%

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 3 137 7986 37.17 937 916 190.2
A 0 226 7913 36.79 937 916 190.2
A 12 194 6460 29.15 937 916 190.2
B 7 220 49675 270.19 930 904 180.5
B 3 64 23410 124.68 930 904 180.5
B 12 111 22358 118.86 930 904 180.5
C 14 238 140103 661.58 898 902 210.4
C 7 247 8461 35.93 898 902 210.4
C 13 61 6113 24.77 898 902 210.4
D 1 52 532812 2397.89 906 878 221.8
D 9 1 212441 953.7 906 878 221.8
D 7 223 42293 186.69 906 878 221.8

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