ASTROSAT CZTI

Data Quality Report

Orbit 21669

Creation date: 2024-06-27T18:30:54.056195
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/AS1T03_143T01_9000003208_21669cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21669cztM0_level2_quad_clean.evt
Size (bytes)549,774,72064,854,720
Size524.3 MB 61.9 MB
Events in quadrant A4,284,084386,969
Events in quadrant B3,718,967397,431
Events in quadrant C3,433,605379,937
Events in quadrant D4,783,286355,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167462
B0147512
C0137562
D0183112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354620.975763%
B63541021.605288%
C6354971.526597%
D63543114.894555%

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 7704 6355 2 2 0.03% 0.03%
B 7704 6355 21 21 0.27% 0.33%
C 7704 6355 0 0 0.00% 0.00%
D 7704 6355 257 257 3.34% 4.04%

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 15 236 934688 5406.43 869 855 172.7
A 13 254 9856 52.11 869 855 172.7
A 0 226 7458 38.23 869 855 172.7
B 3 64 190097 1164.97 876 856 162.4
B 0 229 24276 144.17 876 856 162.4
B 0 230 23974 142.31 876 856 162.4
C 14 238 134482 683.57 840 848 195.5
C 9 54 14263 68.62 840 848 195.5
C 13 61 5917 25.93 840 848 195.5
D 7 238 889184 4443.55 829 805 199.9
D 1 52 536747 2680.71 829 805 199.9
D 2 136 55126 271.71 829 805 199.9

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