ASTROSAT CZTI

Data Quality Report

Orbit 16678

Creation date: 2024-06-27T17:26:01.406760
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_101T09_9000002466_16678cztM0_level2.evt modeM0/AS1A05_101T09_9000002466_16678cztM0_level2_quad_clean.evt
Size (bytes)643,970,880134,850,240
Size614.1 MB 128.6 MB
Events in quadrant A6,298,480878,856
Events in quadrant B3,851,019934,957
Events in quadrant C3,444,676892,657
Events in quadrant D5,404,831859,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236763
B0163812
C0152622
D0211842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A743888911.952138%
B74381251.680559%
C7438821.102447%
D74382963.979564%

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 7819 7440 826 826 10.56% 11.10%
B 7819 7440 20 20 0.26% 0.27%
C 7819 7440 0 0 0.00% 0.00%
D 7819 7440 220 220 2.81% 2.96%

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 15 174 3082035 18403.77 827 809 167.4
A 3 1 25998 150.45 827 809 167.4
A 0 226 7292 38.72 827 809 167.4
B 15 35 218840 1339.64 860 838 162.7
B 7 220 71182 432.27 860 838 162.7
B 0 229 67877 411.96 860 838 162.7
C 14 238 127342 666.92 816 819 189.7
C 3 233 91120 475.99 816 819 189.7
C 7 247 38177 196.92 816 819 189.7
D 1 52 1398244 7085.37 817 791 197.2
D 2 16 608517 3081.29 817 791 197.2
D 10 70 140150 706.58 817 791 197.2

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