ASTROSAT CZTI

Data Quality Report

Orbit 30025

Creation date: 2024-06-27T20:10:01.862480
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/AS1A10_071T03_9000004314_30025cztM0_level2.evt modeM0/AS1A10_071T03_9000004314_30025cztM0_level2_quad_clean.evt
Size (bytes)603,253,44098,297,280
Size575.3 MB 93.7 MB
Events in quadrant A3,859,209628,827
Events in quadrant B5,941,470623,445
Events in quadrant C3,904,064598,714
Events in quadrant D4,046,368594,009

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161972
B0234443
C0162622
D0167612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76413344.371156%
B76414846.334249%
C76414025.261091%
D76412843.716791%

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 8551 7644 0 0 0.00% 0.00%
B 8551 7644 0 0 0.00% 0.00%
C 8551 7644 0 0 0.00% 0.00%
D 8551 7644 26 26 0.30% 0.34%

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 8 192 22286 106.03 994 971 201.0
A 13 254 14108 65.35 994 971 201.0
A 3 137 10219 46.0 994 971 201.0
B 6 159 2044838 10806.72 967 941 189.1
B 6 36 75879 396.22 967 941 189.1
B 12 111 24434 124.21 967 941 189.1
C 14 238 151017 669.31 947 953 224.2
C 3 233 36680 159.35 947 953 224.2
C 2 114 17867 75.44 947 953 224.2
D 8 195 192347 832.09 963 936 230.0
D 7 80 87231 375.14 963 936 230.0
D 13 249 65546 280.87 963 936 230.0

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