ASTROSAT CZTI

Data Quality Report

Orbit 18024

Creation date: 2024-06-27T17:44:01.038091
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_159T01_9000002678_18024cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18024cztM0_level2_quad_clean.evt
Size (bytes)532,563,840107,726,400
Size507.9 MB 102.7 MB
Events in quadrant A3,668,795711,088
Events in quadrant B3,810,814712,898
Events in quadrant C4,257,814677,922
Events in quadrant D3,909,470666,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154722
B0157992
C0173572
D0163802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71081231.730445%
B71081341.885200%
C71081472.068092%
D7108921.294316%

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 7603 7110 47 47 0.62% 0.66%
B 7603 7110 35 35 0.46% 0.49%
C 7603 7110 17 17 0.22% 0.24%
D 7603 7110 59 59 0.78% 0.83%

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 4 2 196866 1063.91 895 879 184.2
A 15 174 31105 164.08 895 879 184.2
A 0 226 7760 37.35 895 879 184.2
B 5 172 179812 1028.09 893 874 174.0
B 7 220 36671 205.67 893 874 174.0
B 0 229 31766 177.49 893 874 174.0
C 3 233 584529 2905.47 849 857 200.9
C 0 207 153480 759.74 849 857 200.9
C 14 238 131987 652.75 849 857 200.9
D 5 222 235457 1114.05 864 840 210.6
D 11 176 156737 740.26 864 840 210.6
D 7 38 111819 526.97 864 840 210.6

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