ASTROSAT CZTI

Data Quality Report

Orbit 23926

Creation date: 2024-06-27T19:00:07.501300
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/AS1A07_142T01_9000003540_23926cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23926cztM0_level2_quad_clean.evt
Size (bytes)574,459,20078,851,520
Size547.8 MB 75.2 MB
Events in quadrant A3,647,185503,371
Events in quadrant B3,680,094509,709
Events in quadrant C4,510,182461,213
Events in quadrant D5,121,656461,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149341
B0150061
C0178881
D0200441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6486901.387604%
B64861131.742214%
C64862954.548258%
D64861712.636448%

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 7806 6487 0 0 0.00% 0.00%
B 7806 6487 7 7 0.09% 0.11%
C 7806 6487 93 93 1.19% 1.43%
D 7806 6487 60 60 0.77% 0.92%

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 11003 54.43 946 930 185.1
A 0 226 8432 40.54 946 930 185.1
A 3 137 7421 35.07 946 930 185.1
B 5 172 23063 130.89 925 906 169.3
B 12 111 19126 107.63 925 906 169.3
B 11 111 17013 95.15 925 906 169.3
C 10 9 923866 4703.87 863 873 196.2
C 14 238 140777 713.0 863 873 196.2
C 0 10 77011 388.02 863 873 196.2
D 8 195 882515 4086.51 900 875 215.7
D 1 52 615186 2847.41 900 875 215.7
D 12 218 141850 653.43 900 875 215.7

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