ASTROSAT CZTI

Data Quality Report

Orbit 21354

Creation date: 2024-06-27T18:26:42.633669
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_041T01_9000003150_21354cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21354cztM0_level2_quad_clean.evt
Size (bytes)652,152,960102,202,560
Size621.9 MB 97.5 MB
Events in quadrant A3,822,066662,665
Events in quadrant B3,878,092672,951
Events in quadrant C4,717,366636,369
Events in quadrant D6,815,152591,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161743
B0165412
C0190532
D0254492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7646750.980905%
B76461461.909495%
C76473594.694651%
D764796312.593174%

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 8721 7648 0 0 0.00% 0.00%
B 8721 7647 10 10 0.11% 0.13%
C 8722 7647 68 68 0.78% 0.89%
D 8722 7649 686 686 7.87% 8.97%

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 5 168 134805 692.11 954 931 193.4
A 11 47 10751 50.77 954 931 193.4
A 13 254 9639 45.02 954 931 193.4
B 0 230 59139 315.4 949 922 184.6
B 6 36 47484 252.25 949 922 184.6
B 0 197 36212 191.19 949 922 184.6
C 3 233 1006392 4661.17 914 920 215.7
C 14 238 140102 645.22 914 920 215.7
C 13 61 6297 24.93 914 920 215.7
D 13 174 2833644 12929.31 896 869 219.1
D 1 52 524580 2390.31 896 869 219.1
D 12 235 35314 157.21 896 869 219.1

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