ASTROSAT CZTI

Data Quality Report

Orbit 04597

Creation date: 2024-06-27T14:44:23.633123
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/AS1G05_191T01_9000000572_04597cztM0_level2.evt modeM0/AS1G05_191T01_9000000572_04597cztM0_level2_quad_clean.evt
Size (bytes)1,683,884,160218,802,240
Size1.6 GB 208.7 MB
Events in quadrant A8,296,1061,514,136
Events in quadrant B8,650,4711,508,028
Events in quadrant C7,998,7091,488,694
Events in quadrant D24,913,114950,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035772102
B036832104
C03559267
D086018711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03462
B03460
C03460
D03460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168702311.369295%
B168731921.137913%
C168861600.947530%
D16820733743.620690%

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 19018 16919 77 77 0.40% 0.46%
B 19018 16919 40 40 0.21% 0.24%
C 19018 16920 9 9 0.05% 0.05%
D 19018 16858 6516 6516 34.26% 38.65%

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 15 174 349940 853.84 2001 1965 407.5
A 13 14 137684 333.02 2001 1965 407.5
A 13 11 41983 98.19 2001 1965 407.5
B 10 16 372646 968.1 2016 1975 382.9
B 2 249 126473 325.16 2016 1975 382.9
B 14 167 113572 291.46 2016 1975 382.9
C 14 48 254199 555.68 1955 1973 453.9
C 9 247 36190 75.38 1955 1973 453.9
C 14 67 22119 44.38 1955 1973 453.9
D 13 235 18593765 53435.61 1441 1402 347.9
D 10 15 226049 645.65 1441 1402 347.9
D 7 223 204965 585.05 1441 1402 347.9

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