ASTROSAT CZTI

Data Quality Report

Orbit 16144

Creation date: 2024-06-27T17:18:38.000357
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/AS1T02_092T01_9000002384_16144cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16144cztM0_level2_quad_clean.evt
Size (bytes)554,506,56099,351,360
Size528.8 MB 94.7 MB
Events in quadrant A3,728,897644,042
Events in quadrant B4,342,657635,949
Events in quadrant C3,947,972608,370
Events in quadrant D4,264,855598,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162653
B0178452
C0165942
D0180392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7501991.319824%
B75011922.559659%
C7501981.306492%
D75011962.612985%

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 8202 7504 28 28 0.34% 0.37%
B 8202 7504 36 36 0.44% 0.48%
C 8202 7504 2 2 0.02% 0.03%
D 8202 7504 115 115 1.40% 1.53%

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 15 174 228316 1238.55 897 878 183.6
A 15 223 20046 104.38 897 878 183.6
A 13 248 18030 93.4 897 878 183.6
B 0 189 256456 1484.77 896 874 172.1
B 5 65 213562 1235.58 896 874 172.1
B 0 229 99393 572.33 896 874 172.1
C 3 233 381878 1879.78 859 866 202.7
C 14 238 130537 639.75 859 866 202.7
C 0 207 45252 218.99 859 866 202.7
D 1 52 615556 2904.34 867 844 211.7
D 5 222 140721 660.88 867 844 211.7
D 10 70 50102 232.73 867 844 211.7

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