ASTROSAT CZTI

Data Quality Report

Orbit 04012

Creation date: 2024-06-27T14:36:20.076666
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/AS1G05_173T01_9000000514_04012cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04012cztM0_level2_quad_clean.evt
Size (bytes)464,595,84075,314,880
Size443.1 MB 71.8 MB
Events in quadrant A3,461,925447,817
Events in quadrant B3,501,199450,309
Events in quadrant C3,283,854444,898
Events in quadrant D3,329,627432,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153583
B0151502
C0150732
D0153852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72612092.878391%
B72611932.658036%
C72611862.561631%
D72611662.286186%

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 9021 7262 21 21 0.23% 0.29%
B 9021 7263 1 1 0.01% 0.01%
C 9021 7262 7 7 0.08% 0.10%
D 9021 7263 13 13 0.14% 0.18%

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 0 118 81410 459.97 852 832 175.2
A 13 251 45833 256.88 852 832 175.2
A 0 50 29884 165.84 852 832 175.2
B 15 204 101577 609.37 862 841 165.3
B 4 81 36317 214.6 862 841 165.3
B 12 111 14529 82.8 862 841 165.3
C 9 144 40796 207.08 829 830 193.0
C 13 61 6991 31.92 829 830 193.0
C 12 4 2141 6.79 829 830 193.0
D 12 233 40289 197.13 824 798 200.3
D 2 232 35469 173.07 824 798 200.3
D 13 239 28720 139.38 824 798 200.3

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