ASTROSAT CZTI

Data Quality Report

Orbit 35015

Creation date: 2022-06-11T12:12:57.527128
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/AS1T05_010T01_9000005016_35015cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35015cztM0_level2_quad_clean.evt
Size (bytes)712,249,920122,129,280
Size679.3 MB 116.5 MB
Events in quadrant A4,585,802799,770
Events in quadrant B4,957,744803,829
Events in quadrant C4,675,738776,006
Events in quadrant D6,775,035727,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188193
B0198902
C0185432
D0256432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401
B0401
C0401
D0401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8527350.410461%
B8527871.020288%
C8527650.762285%
D85273524.128064%

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 12473 8529 19 19 0.15% 0.22%
B 12473 8529 50 50 0.40% 0.59%
C 12473 8529 50 50 0.40% 0.59%
D 12472 8528 302 302 2.42% 3.54%

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 15 223 247019 1135.12 1094 1080 216.7
A 10 83 93893 428.37 1094 1080 216.7
A 13 254 14770 63.19 1094 1080 216.7
B 5 31 249863 1231.72 1090 1068 202.0
B 5 172 187084 920.91 1090 1068 202.0
B 4 232 89315 436.89 1090 1068 202.0
C 15 214 349836 1466.09 1050 1061 237.9
C 0 10 205740 860.37 1050 1061 237.9
C 14 67 10097 37.98 1050 1061 237.9
D 8 195 1528426 6155.2 1029 1003 248.2
D 13 249 368741 1481.91 1029 1003 248.2
D 12 233 274489 1102.09 1029 1003 248.2

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