ASTROSAT CZTI

Data Quality Report

Orbit 10918

Creation date: 2024-06-27T16:05:39.162420
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/AS1A04_109T01_9000001578_10918cztM0_level2.evt modeM0/AS1A04_109T01_9000001578_10918cztM0_level2_quad_clean.evt
Size (bytes)563,495,040104,866,560
Size537.4 MB 100.0 MB
Events in quadrant A4,622,168661,369
Events in quadrant B4,712,391674,325
Events in quadrant C3,210,722683,083
Events in quadrant D4,023,269646,924

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01870715
B01897617
C01493510
D01715022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73232853.891848%
B73233354.574628%
C7325280.382253%
D7322871.188200%

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 7488 7331 100 100 1.34% 1.36%
B 7488 7331 149 149 1.99% 2.03%
C 7488 7331 0 0 0.00% 0.00%
D 7488 7331 65 65 0.87% 0.89%

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 13 251 849556 4943.07 835 816 171.7
A 15 223 310671 1804.6 835 816 171.7
A 8 5 122250 707.23 835 816 171.7
B 4 239 1281742 7910.08 841 820 161.9
B 0 214 52965 322.01 841 820 161.9
B 15 204 24700 147.47 841 820 161.9
C 8 128 8914 42.47 817 818 190.6
C 8 222 8338 39.45 817 818 190.6
C 13 61 6233 28.41 817 818 190.6
D 1 52 723626 3643.36 812 787 198.4
D 5 222 37146 183.26 812 787 198.4
D 13 104 32538 160.04 812 787 198.4

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