ASTROSAT CZTI

Data Quality Report

Orbit 22795

Creation date: 2024-06-27T18:45:51.440468
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_168T01_9000003368_22795cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22795cztM0_level2_quad_clean.evt
Size (bytes)517,559,040137,263,680
Size493.6 MB 130.9 MB
Events in quadrant A3,191,592949,235
Events in quadrant B3,292,754966,393
Events in quadrant C3,286,117926,127
Events in quadrant D5,472,991872,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134492
B0137972
C0138082
D0205347

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6357370.582036%
B6357400.629228%
C6357811.274186%
D63564396.906860%

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 7552 6358 2 2 0.03% 0.03%
B 7552 6358 1 1 0.01% 0.02%
C 7552 6358 3 3 0.04% 0.05%
D 7551 6357 381 381 5.05% 5.99%

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 13 254 12056 68.62 825 809 163.9
A 0 175 9436 52.63 825 809 163.9
A 0 226 7141 38.63 825 809 163.9
B 0 190 17541 109.97 826 808 152.2
B 12 111 17190 107.66 826 808 152.2
B 0 245 16251 101.49 826 808 152.2
C 14 238 130199 699.93 804 811 184.9
C 10 22 14379 73.4 804 811 184.9
C 0 10 5701 26.45 804 811 184.9
D 1 52 2399664 12585.46 793 771 190.6
D 5 222 29150 148.88 793 771 190.6
D 2 234 24994 127.08 793 771 190.6

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