ASTROSAT CZTI

Data Quality Report

Orbit 20170724_A03_117T06_9000001404_level2

Creation date: 2021-08-27T18:38:43.496088
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/AS1A03_117T06_9000001404cztM0_level2_bc.evt modeM0/AS1A03_117T06_9000001404cztM0_level2_quad_clean.evt
Size (bytes)105,808,32036,023,040
Size100.9 MB 34.4 MB
Events in quadrant A721,182203,302
Events in quadrant B722,266210,985
Events in quadrant C732,477205,586
Events in quadrant D757,700198,849

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02640
C02620
D02630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083220
B083180
C083610
D083480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0780
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38252446.379085%
B38482476.418919%
C38301513.942559%
D38241694.419456%

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 3927 3919 0 0 0.00% 0.00%
B 3927 3915 0 0 0.00% 0.00%
C 3927 3917 0 0 0.00% 0.00%
D 3927 3912 0 0 0.00% 0.00%

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 13 251 12502 290.84 182 177 42.4
A 15 239 4831 109.82 182 177 42.4
A 12 194 1263 25.63 182 177 42.4
B 0 229 3698 91.09 188 182 38.6
B 8 61 1315 29.35 188 182 38.6
B 0 219 1057 22.67 188 182 38.6
C 4 254 16944 396.55 181 176 42.3
C 14 67 1753 37.29 181 176 42.3
C 9 221 1114 22.18 181 176 42.3
D 8 195 33797 687.71 179 171 48.9
D 2 16 17160 347.46 179 171 48.9
D 2 234 14582 294.73 179 171 48.9

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