ASTROSAT CZTI

Data Quality Report

Orbit 26888

Creation date: 2024-06-27T19:34:16.681772
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/AS1T03_230T01_9000003874_26888cztM0_level2.evt modeM0/AS1T03_230T01_9000003874_26888cztM0_level2_quad_clean.evt
Size (bytes)711,115,200155,445,120
Size678.2 MB 148.2 MB
Events in quadrant A5,675,3081,030,643
Events in quadrant B4,425,7691,061,218
Events in quadrant C3,830,8141,041,868
Events in quadrant D7,038,092992,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225470
B0185750
C0170370
D0266410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83712082.484769%
B83721391.660296%
C8372891.063067%
D83725336.366460%

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 8806 8371 104 104 1.18% 1.24%
B 8807 8372 57 57 0.65% 0.68%
C 8807 8373 3 3 0.03% 0.04%
D 8807 8373 515 515 5.85% 6.15%

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 13 1611846 8272.94 967 946 194.7
A 6 16 319593 1636.44 967 946 194.7
A 13 254 13311 63.5 967 946 194.7
B 3 64 224872 1223.43 965 940 183.0
B 15 33 154068 836.6 965 940 183.0
B 10 246 127947 693.89 965 940 183.0
C 14 238 152521 694.76 934 938 218.2
C 15 208 22559 99.1 934 938 218.2
C 2 16 10272 42.78 934 938 218.2
D 7 80 1330818 6244.22 917 896 213.0
D 11 176 952722 4468.99 917 896 213.0
D 1 52 669079 3137.24 917 896 213.0

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