ASTROSAT CZTI

Data Quality Report

Orbit 11641

Creation date: 2024-06-27T16:16:18.953161
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_026T04_9000001714_11641cztM0_level2.evt modeM0/AS1A04_026T04_9000001714_11641cztM0_level2_quad_clean.evt
Size (bytes)687,608,640129,384,000
Size655.8 MB 123.4 MB
Events in quadrant A4,573,350888,445
Events in quadrant B4,452,615892,561
Events in quadrant C3,191,840864,683
Events in quadrant D8,118,868770,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186002
B0179971
C0147121
D0289941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72092022.802053%
B72093655.063116%
C7209841.165210%
D7209129717.991400%

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 7375 7211 17 17 0.23% 0.24%
B 7375 7211 125 125 1.69% 1.73%
C 7375 7211 0 0 0.00% 0.00%
D 7375 7211 1278 1278 17.33% 17.72%

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 1 162 339643 1963.04 845 826 172.6
A 8 5 335280 1937.76 845 826 172.6
A 1 178 206702 1192.8 845 826 172.6
B 4 239 940744 5819.8 837 815 161.5
B 0 219 107833 662.63 837 815 161.5
B 15 204 87883 539.1 837 815 161.5
C 14 234 7220 33.82 815 818 189.3
C 13 61 6049 27.63 815 818 189.3
C 8 128 3373 13.5 815 818 189.3
D 1 52 3281033 17722.84 774 750 185.1
D 10 253 487747 2631.17 774 750 185.1
D 8 195 353976 1908.42 774 750 185.1

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