ASTROSAT CZTI

Data Quality Report

Orbit 21170

Creation date: 2024-06-27T18:24:36.880603
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/AS1A06_009T03_9000003128_21170cztM0_level2.evt modeM0/AS1A06_009T03_9000003128_21170cztM0_level2_quad_clean.evt
Size (bytes)752,832,00092,808,000
Size718.0 MB 88.5 MB
Events in quadrant A3,788,785593,082
Events in quadrant B3,982,996601,882
Events in quadrant C3,716,052581,217
Events in quadrant D10,793,494500,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160362
B0163012
C0157642
D0374422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76671221.591235%
B76671331.734707%
C76671531.995565%
D7667161020.999087%

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 9087 7667 10 10 0.11% 0.13%
B 9087 7668 6 6 0.07% 0.08%
C 9087 7667 0 0 0.00% 0.00%
D 9087 7667 1432 1432 15.76% 18.68%

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 5 16 89012 456.82 955 932 192.8
A 13 254 11655 55.61 955 932 192.8
A 0 226 8247 37.94 955 932 192.8
B 0 189 63902 343.86 952 927 183.1
B 0 230 62588 336.69 952 927 183.1
B 12 111 21938 114.73 952 927 183.1
C 14 238 142949 656.68 915 919 216.3
C 13 61 6384 25.27 915 919 216.3
C 7 220 4602 17.03 915 919 216.3
D 1 20 3414972 16085.03 867 844 212.3
D 7 238 2770494 13048.69 867 844 212.3
D 1 52 972958 4579.93 867 844 212.3

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