ASTROSAT CZTI

Data Quality Report

Orbit 46266

Creation date: 2024-06-27T23:21:02.048251
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/AS1A13_071T10_9000006192_46266cztM0_level2.fits modeM0/AS1A13_071T10_9000006192_46266cztM0_level2_quad_clean.evt
Size (bytes)602,645,760127,105,920
Size574.7 MB 121.2 MB
Events in quadrant A7,031,906831,278
Events in quadrant B6,072,917842,978
Events in quadrant C3,595,771856,530
Events in quadrant D4,980,233754,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258244
B0235582
C0167092
D0206022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80912042.521320%
B80924886.030648%
C8092560.692042%
D80923774.658922%

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 9506 8093 5 5 0.05% 0.06%
B 9507 8094 279 279 2.93% 3.45%
C 9507 8094 12 12 0.13% 0.15%
D 9507 8094 314 314 3.30% 3.88%

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 10 83 3598927 19527.36 885 865 184.3
A 13 254 12657 64.0 885 865 184.3
A 3 137 10424 51.88 885 865 184.3
B 3 112 2444251 14092.27 874 843 173.4
B 5 172 78789 449.55 874 843 173.4
B 5 32 34440 193.77 874 843 173.4
C 12 2 82157 389.01 884 888 208.9
C 10 20 51245 241.04 884 888 208.9
C 11 16 12016 53.27 884 888 208.9
D 1 52 523080 2393.17 865 839 218.2
D 8 129 423221 1935.56 865 839 218.2
D 13 249 322567 1474.32 865 839 218.2

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