ASTROSAT CZTI

Data Quality Report

Orbit 31893

Creation date: 2024-06-27T20:33:55.763876
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/AS1T04_042T01_9000004650_31893cztM0_level2.evt modeM0/AS1T04_042T01_9000004650_31893cztM0_level2_quad_clean.evt
Size (bytes)659,983,680105,730,560
Size629.4 MB 100.8 MB
Events in quadrant A3,331,196712,132
Events in quadrant B6,215,510662,816
Events in quadrant C5,464,087669,278
Events in quadrant D4,495,969662,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145581
B0237311
C0211481
D0180961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7118240.337173%
B71184476.279854%
C71183284.608036%
D71191171.643489%

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 7458 7119 0 0 0.00% 0.00%
B 7458 7119 262 262 3.51% 3.68%
C 7458 7119 81 81 1.09% 1.14%
D 7459 7120 88 88 1.18% 1.24%

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 13 254 10613 56.55 860 842 172.8
A 3 137 8972 47.05 860 842 172.8
A 13 6 7641 39.35 860 842 172.8
B 6 159 2002049 12833.64 815 797 155.9
B 5 172 683499 4378.04 815 797 155.9
B 5 255 191522 1223.08 815 797 155.9
C 3 233 1193488 6282.97 805 809 189.8
C 0 10 921672 4851.06 805 809 189.8
C 14 238 132846 695.56 805 809 189.8
D 8 195 875959 4414.41 818 795 198.3
D 7 38 148832 746.71 818 795 198.3
D 12 218 125669 629.87 818 795 198.3

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