ASTROSAT CZTI

Data Quality Report

Orbit 16606

Creation date: 2024-06-27T17:25:01.088478
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/AS1C04_009T01_9000002448_16606cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16606cztM0_level2_quad_clean.evt
Size (bytes)568,152,000154,693,440
Size541.8 MB 147.5 MB
Events in quadrant A3,778,5311,026,103
Events in quadrant B4,599,8551,049,342
Events in quadrant C4,204,8021,023,799
Events in quadrant D4,051,4741,001,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172813
B0195102
C0179032
D0181822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8429230.272867%
B84291722.040574%
C8429881.044015%
D8429400.474552%

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 9355 8432 1 1 0.01% 0.01%
B 9355 8432 8 8 0.09% 0.09%
C 9355 8432 0 0 0.00% 0.00%
D 9355 8432 18 18 0.19% 0.21%

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 20255 98.2 970 948 196.6
A 15 69 11287 52.59 970 948 196.6
A 15 174 8637 39.11 970 948 196.6
B 0 189 243513 1320.5 978 953 183.7
B 15 35 216789 1175.01 978 953 183.7
B 0 85 68966 370.26 978 953 183.7
C 3 233 205771 926.15 948 951 221.2
C 14 238 147200 661.3 948 951 221.2
C 7 247 138178 620.51 948 951 221.2
D 1 52 232126 1003.63 949 918 230.4
D 10 70 115230 496.21 949 918 230.4
D 7 38 76344 327.41 949 918 230.4

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