ASTROSAT CZTI

Data Quality Report

Orbit 31415

Creation date: 2024-06-27T20:28:13.668178
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/AS1T04_026T01_9000004560_31415cztM0_level2.evt modeM0/AS1T04_026T01_9000004560_31415cztM0_level2_quad_clean.evt
Size (bytes)665,732,16089,087,040
Size634.9 MB 85.0 MB
Events in quadrant A3,858,111555,151
Events in quadrant B6,008,394554,303
Events in quadrant C4,313,312537,822
Events in quadrant D5,453,748507,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163052
B0237052
C0177192
D0211822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77962713.476142%
B77973995.117353%
C77973494.476081%
D77975256.733359%

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 8641 7797 0 0 0.00% 0.00%
B 8642 7798 6 6 0.07% 0.08%
C 8642 7798 8 8 0.09% 0.10%
D 8642 7798 309 309 3.58% 3.96%

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 13 254 11422 51.43 999 978 203.1
A 3 137 10925 48.99 999 978 203.1
A 0 226 8498 37.03 999 978 203.1
B 6 159 2072858 10893.73 974 946 190.2
B 0 190 46395 238.96 974 946 190.2
B 4 80 27553 139.89 974 946 190.2
C 3 233 349087 1540.03 953 954 226.1
C 14 238 157139 690.91 953 954 226.1
C 10 22 70721 308.63 953 954 226.1
D 12 218 1061555 4589.48 957 930 231.1
D 8 195 631138 2727.0 957 930 231.1
D 2 250 84904 363.37 957 930 231.1

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