ASTROSAT CZTI

Data Quality Report

Orbit 16071

Creation date: 2024-06-27T17:17:32.248432
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/AS1A04_230T01_9000002374_16071cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16071cztM0_level2_quad_clean.evt
Size (bytes)580,628,16096,477,120
Size553.7 MB 92.0 MB
Events in quadrant A3,830,378622,137
Events in quadrant B3,992,528617,693
Events in quadrant C3,648,557596,593
Events in quadrant D5,598,895557,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162423
B0169072
C0157792
D0217552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7583881.160491%
B75831872.466042%
C75831101.450613%
D75835707.516814%

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 8364 7586 11 11 0.13% 0.15%
B 8364 7586 37 37 0.44% 0.49%
C 8364 7586 1 1 0.01% 0.01%
D 8364 7586 477 477 5.70% 6.29%

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 3 80 251845 1362.99 909 889 184.1
A 15 174 49078 261.72 909 889 184.1
A 15 239 24259 126.93 909 889 184.1
B 7 220 180575 1023.45 911 889 175.6
B 0 189 57589 322.95 911 889 175.6
B 0 190 32885 182.24 911 889 175.6
C 14 238 132984 631.2 879 885 209.3
C 0 207 44656 209.15 879 885 209.3
C 3 233 32908 153.01 879 885 209.3
D 1 52 1771298 8349.1 862 837 212.1
D 13 232 256897 1207.52 862 837 212.1
D 12 218 230259 1081.9 862 837 212.1

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