ASTROSAT CZTI

Data Quality Report

Orbit 14889

Creation date: 2024-06-27T17:00:57.803284
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/AS1T02_054T01_9000002200_14889cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14889cztM0_level2_quad_clean.evt
Size (bytes)490,138,560110,954,880
Size467.4 MB 105.8 MB
Events in quadrant A3,075,612731,083
Events in quadrant B3,813,057718,679
Events in quadrant C3,239,227734,266
Events in quadrant D4,260,793709,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135680
B0156140
C0136920
D0172970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6695290.433159%
B66962383.554361%
C6696430.642174%
D66961892.822581%

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 8545 6697 0 0 0.00% 0.00%
B 8546 6698 144 144 1.68% 2.15%
C 8546 6698 0 0 0.00% 0.00%
D 8546 6698 109 109 1.28% 1.63%

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 12 189 13430 78.27 793 773 161.7
A 3 1 13320 77.59 793 773 161.7
A 0 226 7069 38.93 793 773 161.7
B 3 64 583844 3934.81 781 759 148.2
B 0 189 91583 612.9 781 759 148.2
B 10 16 24145 157.81 781 759 148.2
C 3 233 171328 939.76 784 789 181.5
C 3 232 6729 32.73 784 789 181.5
C 13 61 5583 26.42 784 789 181.5
D 7 254 1141890 6233.77 771 753 183.1
D 13 104 152687 829.98 771 753 183.1
D 2 120 26167 138.83 771 753 183.1

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