ASTROSAT CZTI

Data Quality Report

Orbit 00685

Creation date: 2024-06-27T14:01:32.063057
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/AS1P01_147T02_9000000098_00685cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00685cztM0_level2_quad_clean.evt
Size (bytes)1,650,234,24073,399,680
Size1.5 GB 70.0 MB
Events in quadrant A8,739,712468,392
Events in quadrant B8,944,378470,784
Events in quadrant C21,343,445357,159
Events in quadrant D10,490,935437,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309291
B0315271
C0693741
D0361551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6979650.931366%
B6979590.845393%
C6979614688.064193%
D69792884.126666%

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 6994 6980 544 544 7.78% 7.79%
B 6994 6980 504 504 7.21% 7.22%
C 6994 6980 6977 6977 99.76% 99.96%
D 6994 6980 1178 1178 16.84% 16.88%

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 15 171 99950 180.67 2228 2247 540.8
A 12 236 59510 105.89 2228 2247 540.8
A 12 133 27832 47.31 2228 2247 540.8
B 7 221 131894 235.17 2298 2310 551.0
B 0 220 40765 69.79 2298 2310 551.0
B 5 247 25440 41.98 2298 2310 551.0
C 3 191 11533572 23371.82 1757 1818 493.4
C 3 127 1026631 2077.03 1757 1818 493.4
C 3 95 505710 1021.26 1757 1818 493.4
D 1 84 1358609 2162.83 2018 2091 627.2
D 0 25 909451 1446.69 2018 2091 627.2
D 1 4 644624 1024.45 2018 2091 627.2

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