ASTROSAT CZTI

Data Quality Report

Orbit 20220126_T05_003T01_9000004886_level2

Creation date: 2022-01-27T16:19:39.489842
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/AS1T05_003T01_9000004886cztM0_level2_bc.evt modeM0/AS1T05_003T01_9000004886cztM0_level2_quad_clean.evt
Size (bytes)3,062,701,440725,025,600
Size2.9 GB 691.4 MB
Events in quadrant A13,661,1264,602,975
Events in quadrant B26,277,6344,462,426
Events in quadrant C19,581,4484,687,540
Events in quadrant D29,307,8974,242,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011800
B011800
C011800
D011800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01221800
B01692280
C01399760
D01826810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A577571840.318576%
B5775751578.928788%
C5775712952.242152%
D5775744747.746247%

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 77737 57764 32 32 0.04% 0.06%
B 77737 57754 796 796 1.02% 1.38%
C 77737 57757 218 218 0.28% 0.38%
D 77737 57741 867 867 1.12% 1.50%

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 15 47 1354195 2081.54 2965 2919 649.2
A 9 143 358848 548.28 2965 2919 649.2
A 13 6 147153 222.18 2965 2919 649.2
B 5 31 7416462 12904.54 2934 2871 574.5
B 5 172 3402196 5917.07 2934 2871 574.5
B 5 15 2382893 4142.81 2934 2871 574.5
C 15 214 2347072 3447.05 2972 2954 680.0
C 14 254 1990688 2922.99 2972 2954 680.0
C 0 10 1125932 1651.35 2972 2954 680.0
D 8 195 8886359 12948.38 2872 2780 686.1
D 1 52 3961179 5769.62 2872 2780 686.1
D 7 80 1812987 2638.49 2872 2780 686.1

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