ASTROSAT CZTI

Data Quality Report

Orbit 16550

Creation date: 2024-06-27T17:24:17.077630
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_018T01_9000002442_16550cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16550cztM0_level2_quad_clean.evt
Size (bytes)629,789,76085,924,800
Size600.6 MB 81.9 MB
Events in quadrant A3,920,201515,864
Events in quadrant B4,302,387527,325
Events in quadrant C6,430,876504,082
Events in quadrant D3,881,790502,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167213
B0175622
C0246072
D0170212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79402543.198992%
B79403003.778338%
C79406568.261965%
D79402573.236776%

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 8571 7942 2 2 0.02% 0.03%
B 8571 7942 21 21 0.25% 0.26%
C 8571 7942 108 108 1.26% 1.36%
D 8570 7941 51 51 0.60% 0.64%

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 120242 602.98 974 949 197.8
A 15 223 29975 146.72 974 949 197.8
A 15 239 15466 73.38 974 949 197.8
B 15 35 156492 816.23 978 949 190.6
B 3 209 101363 526.93 978 949 190.6
B 7 220 73597 381.23 978 949 190.6
C 3 233 2639488 12104.28 926 931 218.0
C 14 238 141518 644.94 926 931 218.0
C 7 247 15097 64.99 926 931 218.0
D 10 70 102542 431.92 953 922 235.3
D 2 33 74371 312.18 953 922 235.3
D 2 234 34166 141.3 953 922 235.3

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