ASTROSAT CZTI

Data Quality Report

Orbit 22743

Creation date: 2024-06-27T18:45:06.086249
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/AS1A08_007T01_9000003362_22743cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22743cztM0_level2_quad_clean.evt
Size (bytes)553,230,72088,672,320
Size527.6 MB 84.6 MB
Events in quadrant A3,510,071559,928
Events in quadrant B3,657,358562,034
Events in quadrant C3,566,714537,527
Events in quadrant D5,524,590516,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151142
B0154302
C0152412
D0213963

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73101061.450068%
B73101371.874145%
C73101451.983584%
D73093935.376933%

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 7830 7311 0 0 0.00% 0.00%
B 7830 7311 2 2 0.03% 0.03%
C 7830 7311 3 3 0.04% 0.04%
D 7829 7310 213 213 2.72% 2.91%

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 12691 64.74 909 888 182.3
A 0 226 7885 38.38 909 888 182.3
A 3 137 7505 36.3 909 888 182.3
B 0 197 33421 190.51 902 880 170.8
B 0 228 33365 190.18 902 880 170.8
B 0 190 25264 142.75 902 880 170.8
C 14 238 136869 672.85 869 874 202.1
C 10 22 36138 174.47 869 874 202.1
C 13 61 6170 26.2 869 874 202.1
D 1 52 1053036 5005.36 870 845 210.2
D 12 227 698779 3320.13 870 845 210.2
D 12 33 305571 1449.61 870 845 210.2

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