ASTROSAT CZTI

Data Quality Report

Orbit 13536

Creation date: 2024-06-27T16:42:16.586729
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_038T01_9000001994_13536cztM0_level2.evt modeM0/AS1T02_038T01_9000001994_13536cztM0_level2_quad_clean.evt
Size (bytes)548,159,040100,886,400
Size522.8 MB 96.2 MB
Events in quadrant A3,968,495653,508
Events in quadrant B4,134,083649,432
Events in quadrant C4,190,823647,697
Events in quadrant D3,828,029611,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158503
B0164012
C0167642
D0155612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70751351.908127%
B70751782.515901%
C70751071.512367%
D70751041.469965%

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 7806 7076 0 0 0.00% 0.00%
B 7806 7076 24 24 0.31% 0.34%
C 7806 7076 0 0 0.00% 0.00%
D 7806 7076 8 8 0.10% 0.11%

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 14 238 191659 936.04 967 952 203.7
A 1 162 25269 119.35 967 952 203.7
A 10 229 20760 97.22 967 952 203.7
B 3 64 262902 1387.33 957 939 188.8
B 0 189 72730 380.2 957 939 188.8
B 4 173 21754 110.23 957 939 188.8
C 3 233 543372 2443.03 936 948 222.0
C 13 61 6585 25.39 936 948 222.0
C 3 202 2170 5.5 936 948 222.0
D 13 104 113482 487.56 934 913 230.9
D 12 110 74570 319.02 934 913 230.9
D 8 195 56682 241.55 934 913 230.9

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