ASTROSAT CZTI

Data Quality Report

Orbit 13480

Creation date: 2024-06-27T16:41:26.804113
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/AS1A04_103T01_9000001988_13480cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13480cztM0_level2_quad_clean.evt
Size (bytes)519,880,320109,077,120
Size495.8 MB 104.0 MB
Events in quadrant A3,763,158690,559
Events in quadrant B3,983,423704,598
Events in quadrant C3,774,414686,979
Events in quadrant D3,671,998657,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168163
B0173192
C0168102
D0169662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8121530.652629%
B81211301.600788%
C8121300.369413%
D8121320.394040%

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 8822 8124 0 0 0.00% 0.00%
B 8822 8123 13 13 0.15% 0.16%
C 8822 8124 0 0 0.00% 0.00%
D 8822 8124 10 10 0.11% 0.12%

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 1 162 16582 78.59 972 949 198.9
A 0 226 8914 40.04 972 949 198.9
A 12 194 7247 31.66 972 949 198.9
B 3 64 61975 326.06 975 952 187.1
B 4 142 47374 248.05 975 952 187.1
B 0 214 25303 130.11 975 952 187.1
C 3 233 73748 331.6 943 947 219.5
C 14 220 10394 43.03 943 947 219.5
C 13 61 6891 27.07 943 947 219.5
D 12 110 36348 157.07 933 904 225.7
D 13 122 34697 149.75 933 904 225.7
D 2 234 29956 128.74 933 904 225.7

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