ASTROSAT CZTI

Data Quality Report

Orbit 20558

Creation date: 2024-06-27T18:16:51.734542
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/AS1A05_072T04_9000003040_20558cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20558cztM0_level2_quad_clean.evt
Size (bytes)553,415,040113,754,240
Size527.8 MB 108.5 MB
Events in quadrant A3,844,113727,746
Events in quadrant B3,877,513734,274
Events in quadrant C3,927,902717,861
Events in quadrant D4,562,887704,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168052
B0167722
C0169102
D0190002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8073861.065279%
B80731301.610306%
C80741431.771117%
D8074981.213773%

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 9023 8075 0 0 0.00% 0.00%
B 9023 8075 2 2 0.02% 0.02%
C 9024 8076 0 0 0.00% 0.00%
D 9024 8076 32 32 0.35% 0.40%

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 14 239 38567 189.61 983 961 198.3
A 11 29 14130 66.4 983 961 198.3
A 0 226 8548 38.25 983 961 198.3
B 12 111 23399 118.75 981 955 189.0
B 11 111 20814 105.08 981 955 189.0
B 14 111 17758 88.91 981 955 189.0
C 14 238 147501 654.25 957 963 224.0
C 3 233 41345 180.29 957 963 224.0
C 13 61 6782 25.98 957 963 224.0
D 5 222 441982 1899.43 961 934 232.2
D 13 153 124326 531.4 961 934 232.2
D 1 52 118402 505.89 961 934 232.2

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