ASTROSAT CZTI

Data Quality Report

Orbit 35580

Creation date: 2022-04-28T04:10:21.381073
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/AS1A10_071T01_9000005096_35580cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35580cztM0_level2_quad_clean.evt
Size (bytes)433,883,52070,646,400
Size413.8 MB 67.4 MB
Events in quadrant A3,998,340437,996
Events in quadrant B3,021,730463,455
Events in quadrant C2,953,980449,071
Events in quadrant D2,821,999433,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151353
B0120322
C0116332
D0114952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50713907.690791%
B50711362.681917%
C50711322.603037%
D5071440.867679%

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 7134 5072 368 368 5.16% 7.26%
B 7134 5072 90 90 1.26% 1.77%
C 7134 5072 90 90 1.26% 1.77%
D 7134 5072 40 40 0.56% 0.79%

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 1472943 11816.49 618 608 124.6
A 10 83 126833 1013.04 618 608 124.6
A 13 6 13201 101.07 618 608 124.6
B 5 172 529255 4443.72 623 609 119.0
B 0 189 27781 228.4 623 609 119.0
B 12 111 14478 116.58 623 609 119.0
C 0 10 351055 2486.65 609 615 140.9
C 15 214 212553 1503.87 609 615 140.9
C 14 67 8137 53.37 609 615 140.9
D 7 80 118287 794.76 610 595 148.1
D 2 153 92479 620.48 610 595 148.1
D 8 195 79330 531.69 610 595 148.1

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