ASTROSAT CZTI

Data Quality Report

Orbit 20858

Creation date: 2024-06-27T18:20:25.825979
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_160T01_9000003078_20858cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20858cztM0_level2_quad_clean.evt
Size (bytes)562,348,80079,214,400
Size536.3 MB 75.5 MB
Events in quadrant A3,434,545505,742
Events in quadrant B3,493,710519,886
Events in quadrant C3,407,030473,594
Events in quadrant D6,271,281461,617

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137361
B0139221
C0136371
D0230502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279761.210384%
B62791031.640389%
C62801111.767516%
D62791001.592610%

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 7629 6280 0 0 0.00% 0.00%
B 7629 6280 1 1 0.01% 0.02%
C 7630 6281 18 18 0.24% 0.29%
D 7629 6280 31 31 0.41% 0.49%

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 0 226 7671 38.23 893 879 177.6
A 3 137 6735 32.96 893 879 177.6
A 12 194 6405 31.11 893 879 177.6
B 0 230 20177 116.86 879 862 165.3
B 12 111 19303 111.57 879 862 165.3
B 11 111 17046 97.91 879 862 165.3
C 14 238 133292 695.29 826 832 190.5
C 0 10 43979 226.48 826 832 190.5
C 13 61 5840 26.29 826 832 190.5
D 1 239 2787688 13769.23 851 830 202.4
D 1 52 78677 384.62 851 830 202.4
D 9 1 63579 310.03 851 830 202.4

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