ASTROSAT CZTI

Data Quality Report

Orbit 20987

Creation date: 2024-06-27T18:22:03.114032
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_072T04_9000003094_20987cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_20987cztM0_level2_quad_clean.evt
Size (bytes)444,764,16085,268,160
Size424.2 MB 81.3 MB
Events in quadrant A3,140,791549,967
Events in quadrant B3,591,832557,939
Events in quadrant C3,186,164527,141
Events in quadrant D3,127,334512,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131083
B0145762
C0132102
D0133312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6236430.689545%
B62361031.651700%
C6236691.106479%
D6236240.384862%

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 7542 6237 0 0 0.00% 0.00%
B 7542 6237 29 29 0.38% 0.46%
C 7542 6237 0 0 0.00% 0.00%
D 7542 6237 6 6 0.08% 0.10%

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 0 226 6927 37.61 817 801 162.9
A 3 137 6074 32.38 817 801 162.9
A 12 194 5727 30.25 817 801 162.9
B 0 182 200705 1312.3 819 799 152.3
B 7 220 136887 893.36 819 799 152.3
B 0 230 22225 140.65 819 799 152.3
C 14 238 124688 683.99 783 790 181.1
C 13 61 5596 26.53 783 790 181.1
C 3 233 3872 17.01 783 790 181.1
D 7 223 72273 375.29 784 762 190.5
D 1 52 52079 269.31 784 762 190.5
D 2 234 20912 105.75 784 762 190.5

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