ASTROSAT CZTI

Data Quality Report

Orbit 35843

Creation date: 2022-06-08T17:18:00.906580
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/AS1A11_080T01_9000005146_35843cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35843cztM0_level2_quad_clean.evt
Size (bytes)509,898,24071,046,720
Size486.3 MB 67.8 MB
Events in quadrant A3,545,708461,300
Events in quadrant B2,840,040465,106
Events in quadrant C3,196,566453,722
Events in quadrant D5,517,031415,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138803
B0114092
C0121962
D0197772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5069611.203393%
B5069310.611560%
C50692334.596567%
D506977015.190373%

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 9314 5071 38 38 0.41% 0.75%
B 9314 5071 4 4 0.04% 0.08%
C 9314 5071 200 200 2.15% 3.94%
D 9314 5071 793 793 8.51% 15.64%

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 15 169 903454 6945.84 641 632 130.0
A 10 83 156869 1202.01 641 632 130.0
A 13 6 10123 73.02 641 632 130.0
B 4 232 145677 1197.46 633 618 121.1
B 5 172 79817 653.79 633 618 121.1
B 0 213 62339 509.51 633 618 121.1
C 0 10 444036 3180.27 605 614 139.4
C 15 214 207675 1485.06 605 614 139.4
C 15 208 175108 1251.49 605 614 139.4
D 7 223 2075344 14298.79 595 582 145.1
D 2 250 778740 5362.89 595 582 145.1
D 13 249 130241 893.58 595 582 145.1

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