ASTROSAT CZTI

Data Quality Report

Orbit 24757

Creation date: 2024-06-27T19:09:32.740330
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_018T08_9000003622_24757cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24757cztM0_level2_quad_clean.evt
Size (bytes)565,790,40084,139,200
Size539.6 MB 80.2 MB
Events in quadrant A3,853,351510,050
Events in quadrant B4,179,824511,982
Events in quadrant C3,884,526493,200
Events in quadrant D4,687,666490,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163743
B0173303
C0164243
D0191066

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78022172.781338%
B78033414.370114%
C78033103.972831%
D78022883.691361%

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 8407 7805 0 0 0.00% 0.00%
B 8408 7806 9 9 0.11% 0.12%
C 8408 7806 3 3 0.04% 0.04%
D 8407 7805 53 53 0.63% 0.68%

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 12 96 15648 72.97 993 970 201.2
A 13 254 13767 63.62 993 970 201.2
A 3 137 9158 40.7 993 970 201.2
B 15 33 176493 930.89 978 953 188.6
B 0 189 66714 348.73 978 953 188.6
B 5 172 33994 175.22 978 953 188.6
C 14 238 147933 660.96 940 944 222.4
C 2 16 45569 200.66 940 944 222.4
C 7 247 17113 72.7 940 944 222.4
D 1 52 673703 2850.31 964 932 236.0
D 8 195 156401 658.67 964 932 236.0
D 12 233 83283 348.89 964 932 236.0

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