ASTROSAT CZTI

Data Quality Report

Orbit 04032

Creation date: 2024-06-27T14:36:33.461818
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/AS1G05_173T01_9000000514_04032cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04032cztM0_level2_quad_clean.evt
Size (bytes)643,072,320111,565,440
Size613.3 MB 106.4 MB
Events in quadrant A4,828,761681,677
Events in quadrant B4,459,973692,848
Events in quadrant C3,942,635693,109
Events in quadrant D5,611,700664,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209471
B0195891
C0188771
D0232601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93273543.795433%
B9327720.771952%
C9327250.268039%
D93271721.844109%

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 9767 9328 124 124 1.27% 1.33%
B 9767 9328 13 13 0.13% 0.14%
C 9767 9328 1 1 0.01% 0.01%
D 9767 9328 162 162 1.66% 1.74%

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 0 50 403420 1895.22 1026 1004 212.3
A 14 111 256590 1203.71 1026 1004 212.3
A 0 118 114482 534.44 1026 1004 212.3
B 15 204 163048 807.89 1041 1016 200.6
B 10 16 146194 723.85 1041 1016 200.6
B 4 81 75410 370.93 1041 1016 200.6
C 9 144 33621 139.88 1000 1003 233.2
C 13 61 8174 30.75 1000 1003 233.2
C 12 4 3944 12.61 1000 1003 233.2
D 11 132 808636 3352.63 1001 971 240.9
D 2 33 698856 2896.93 1001 971 240.9
D 2 232 113692 467.9 1001 971 240.9

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