ASTROSAT CZTI

Data Quality Report

Orbit 07502

Creation date: 2024-06-27T15:20:34.746150
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/AS1T01_156T01_9000001034_07502cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07502cztM0_level2_quad_clean.evt
Size (bytes)539,550,72098,458,560
Size514.6 MB 93.9 MB
Events in quadrant A3,754,705613,745
Events in quadrant B3,994,030622,545
Events in quadrant C3,893,283612,740
Events in quadrant D4,161,625583,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163853
B0170382
C0168162
D0177572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7906891.125727%
B79061271.606375%
C7906790.999241%
D79061381.745510%

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 8596 7909 0 0 0.00% 0.00%
B 8596 7909 1 1 0.01% 0.01%
C 8596 7909 21 21 0.24% 0.27%
D 8596 7909 71 71 0.83% 0.90%

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 15 239 16224 76.55 968 947 199.6
A 0 226 9304 41.88 968 947 199.6
A 12 194 8699 38.85 968 947 199.6
B 0 214 137976 731.05 978 955 187.4
B 0 219 33146 171.75 978 955 187.4
B 4 173 18669 94.51 978 955 187.4
C 1 16 124326 559.47 941 948 220.5
C 8 229 86723 388.95 941 948 220.5
C 13 61 7376 29.15 941 948 220.5
D 2 14 209754 902.4 936 906 231.4
D 2 136 147926 635.25 936 906 231.4
D 14 34 120647 517.38 936 906 231.4

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