ASTROSAT CZTI

Data Quality Report

Orbit 35890

Creation date: 2022-06-08T22:31:44.173741
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/AS1A11_080T01_9000005146_35890cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35890cztM0_level2_quad_clean.evt
Size (bytes)606,824,64099,757,440
Size578.7 MB 95.1 MB
Events in quadrant A2,979,016689,633
Events in quadrant B5,295,923644,920
Events in quadrant C3,100,987676,551
Events in quadrant D6,601,221595,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124453
B0196702
C0126062
D0236952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A591880.135181%
B591888414.937479%
C5918530.895573%
D5918105017.742481%

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 7200 5919 0 0 0.00% 0.00%
B 7200 5919 634 634 8.81% 10.71%
C 7200 5919 34 34 0.47% 0.57%
D 7200 5919 1027 1027 14.26% 17.35%

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 169582 1168.65 708 697 144.5
A 15 169 31601 213.85 708 697 144.5
A 7 3 23058 154.73 708 697 144.5
B 5 63 1822435 14050.85 667 652 129.7
B 5 172 440479 3392.25 667 652 129.7
B 5 255 229054 1761.59 667 652 129.7
C 15 214 250386 1553.77 686 692 160.7
C 0 10 132138 817.95 686 692 160.7
C 0 207 46302 283.82 686 692 160.7
D 12 227 2966759 18574.81 650 634 159.7
D 1 52 501855 3138.8 650 634 159.7
D 8 195 206958 1292.07 650 634 159.7

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