ASTROSAT CZTI

Data Quality Report

Orbit 20668

Creation date: 2024-06-27T18:18:08.993441
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_229T02_9000003060_20668cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20668cztM0_level2_quad_clean.evt
Size (bytes)489,386,880100,788,480
Size466.7 MB 96.1 MB
Events in quadrant A3,543,822663,221
Events in quadrant B3,712,629666,719
Events in quadrant C3,494,993643,741
Events in quadrant D3,638,594635,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146693
B0151882
C0145912
D0149112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355931.463415%
B63551342.108576%
C63551342.108576%
D6355991.557828%

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 7615 6355 10 10 0.13% 0.16%
B 7615 6356 31 31 0.41% 0.49%
C 7615 6355 1 1 0.01% 0.02%
D 7615 6355 24 24 0.32% 0.38%

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 9 143 64412 356.39 890 877 178.3
A 5 16 45513 250.38 890 877 178.3
A 8 205 15966 84.64 890 877 178.3
B 7 220 235268 1450.74 874 856 161.6
B 12 111 18516 109.3 874 856 161.6
B 0 189 18219 107.46 874 856 161.6
C 14 238 134335 689.12 842 852 193.7
C 8 208 47609 241.39 842 852 193.7
C 0 207 19176 94.6 842 852 193.7
D 1 20 129734 625.76 861 837 206.0
D 13 153 103048 496.21 861 837 206.0
D 1 52 48533 231.55 861 837 206.0

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