ASTROSAT CZTI

Data Quality Report

Orbit 35412

Creation date: 2022-09-12T19:19:37.329978
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/AS1T05_022T01_9000005070_35412cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35412cztM0_level2_quad_clean.evt
Size (bytes)659,836,80061,960,320
Size629.3 MB 59.1 MB
Events in quadrant A2,876,840373,258
Events in quadrant B8,105,081361,983
Events in quadrant C3,687,327369,032
Events in quadrant D4,906,523350,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123923
B0280772
C0145752
D0187082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601930.049842%
B6019211635.155341%
C60191252.076757%
D60192734.535637%

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 7332 6020 0 0 0.00% 0.00%
B 7332 6020 1812 1812 24.71% 30.10%
C 7332 6020 95 95 1.30% 1.58%
D 7332 6020 224 224 3.06% 3.72%

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 10 83 140098 991.88 696 681 140.6
A 13 6 21471 147.91 696 681 140.6
A 15 169 14159 95.89 696 681 140.6
B 5 31 1675326 14330.79 606 591 116.9
B 5 15 1671640 14299.25 606 591 116.9
B 5 14 1643149 14055.45 606 591 116.9
C 0 207 337620 2143.98 675 679 157.2
C 0 10 297003 1885.53 675 679 157.2
C 15 214 245556 1558.17 675 679 157.2
D 7 80 601584 3624.03 669 649 165.8
D 8 195 558784 3365.92 669 649 165.8
D 12 233 237667 1429.37 669 649 165.8

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