ASTROSAT CZTI

Data Quality Report

Orbit 19937

Creation date: 2024-06-27T18:08:59.771773
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/AS1A05_160T01_9000002970_19937cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19937cztM0_level2_quad_clean.evt
Size (bytes)691,200,000104,869,440
Size659.2 MB 100.0 MB
Events in quadrant A3,771,083702,129
Events in quadrant B4,055,823702,041
Events in quadrant C8,337,121557,381
Events in quadrant D4,232,219663,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165762
B0173922
C0302902
D0180592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7912770.973205%
B79131632.059901%
C7913217227.448502%
D79131581.996714%

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 8567 7913 0 0 0.00% 0.00%
B 8568 7913 10 10 0.12% 0.13%
C 8568 7913 1074 1074 12.54% 13.57%
D 8568 7915 117 117 1.37% 1.48%

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 3 1 13672 63.24 976 955 201.1
A 0 226 8316 36.61 976 955 201.1
A 3 137 7866 34.37 976 955 201.1
B 7 220 93096 490.17 973 949 188.0
B 0 197 43259 225.07 973 949 188.0
B 0 189 31112 160.45 973 949 188.0
C 4 254 3992199 20898.08 804 809 191.0
C 3 233 929786 4863.93 804 809 191.0
C 14 238 121610 632.49 804 809 191.0
D 1 52 591276 2534.15 947 920 233.0
D 2 234 38488 161.26 947 920 233.0
D 12 1 18294 74.58 947 920 233.0

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