ASTROSAT CZTI

Data Quality Report

Orbit 21817

Creation date: 2024-06-27T18:32:36.861576
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/AS1A07_004T01_9000003230_21817cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21817cztM0_level2_quad_clean.evt
Size (bytes)498,913,92078,750,720
Size475.8 MB 75.1 MB
Events in quadrant A3,560,647469,301
Events in quadrant B3,754,392480,043
Events in quadrant C3,562,936466,566
Events in quadrant D3,727,735452,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153651
B0158071
C0153571
D0162491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74141672.252495%
B74141942.616671%
C74141892.549231%
D74141602.158079%

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 7689 7414 0 0 0.00% 0.00%
B 7689 7414 2 2 0.03% 0.03%
C 7689 7414 0 0 0.00% 0.00%
D 7689 7414 18 18 0.23% 0.24%

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 13 252 47179 251.1 909 888 184.4
A 13 254 14185 72.13 909 888 184.4
A 3 137 7818 37.59 909 888 184.4
B 0 190 76328 424.37 914 891 177.8
B 0 197 32201 176.14 914 891 177.8
B 0 230 23386 126.55 914 891 177.8
C 14 238 134022 642.18 877 880 207.3
C 13 61 6086 25.11 877 880 207.3
C 10 23 4989 19.82 877 880 207.3
D 1 52 200001 918.35 886 859 216.8
D 13 153 50849 230.53 886 859 216.8
D 13 172 49357 223.65 886 859 216.8

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