ASTROSAT CZTI

Data Quality Report

Orbit 21151

Creation date: 2024-06-27T18:24:11.811291
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_136T01_9000003124_21151cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21151cztM0_level2_quad_clean.evt
Size (bytes)1,003,478,40073,091,520
Size957.0 MB 69.7 MB
Events in quadrant A3,433,166510,986
Events in quadrant B3,789,403522,805
Events in quadrant C3,465,937504,850
Events in quadrant D19,203,692159,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01514211
B0159368
C01514913
D06193946

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B061
C072
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7368680.922910%
B73691021.384177%
C73681031.397937%
D7365715297.107943%

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 7781 7373 0 0 0.00% 0.00%
B 7781 7373 8 8 0.10% 0.11%
C 7781 7373 0 0 0.00% 0.00%
D 7780 7366 6873 6873 88.34% 93.31%

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 10507 53.66 887 869 179.6
A 3 137 7586 37.4 887 869 179.6
A 0 226 7562 37.26 887 869 179.6
B 0 230 70243 406.5 891 869 170.7
B 0 189 67676 391.46 891 869 170.7
B 3 64 41557 238.42 891 869 170.7
C 14 238 131664 647.46 853 859 202.0
C 0 10 6365 27.25 853 859 202.0
C 13 61 5922 25.06 853 859 202.0
D 1 239 16430440 196083.43 340 328 83.8
D 7 238 806432 9620.36 340 328 83.8
D 5 222 442300 5274.67 340 328 83.8

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