ASTROSAT CZTI

Data Quality Report

Orbit 20210309_A10_094T01_9000004236_level2

Creation date: 2021-03-15T21:41:42.772740
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_094T01_9000004236cztM0_level2_bc.evt modeM0/AS1A10_094T01_9000004236cztM0_level2_quad_clean.evt
Size (bytes)388,848,96072,388,800
Size370.8 MB 69.0 MB
Events in quadrant A953,703528,009
Events in quadrant B1,051,314538,127
Events in quadrant C1,015,169499,505
Events in quadrant D8,427,427293,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095760
B099250
C0102410
D0348990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4718160.339127%
B4718300.635863%
C47182515.320051%
D4718354075.031793%

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 5643 4718 0 0 0.00% 0.00%
B 5643 4718 2 2 0.04% 0.04%
C 5643 4718 0 0 0.00% 0.00%
D 5643 4718 1542 1542 27.33% 32.68%

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 13 254 8451 147.8 245 240 55.6
A 0 226 1530 23.22 245 240 55.6
A 12 194 1469 22.12 245 240 55.6
B 0 229 40125 801.17 248 243 49.8
B 0 230 16979 336.2 248 243 49.8
B 0 190 11231 220.73 248 243 49.8
C 3 233 69484 1205.93 230 228 57.4
C 14 254 47537 823.78 230 228 57.4
C 2 114 9011 152.94 230 228 57.4
D 8 195 4679835 115151.04 162 155 40.6
D 12 33 1582388 38933.38 162 155 40.6
D 1 52 616388 15163.39 162 155 40.6

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