ASTROSAT CZTI

Data Quality Report

Orbit 05175

Creation date: 2024-06-27T14:52:17.743176
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_214T01_9000000652_05175cztM0_level2.evt modeM0/AS1G05_214T01_9000000652_05175cztM0_level2_quad_clean.evt
Size (bytes)1,189,031,040191,563,200
Size1.1 GB 182.7 MB
Events in quadrant A8,796,8781,140,824
Events in quadrant B8,826,4491,147,650
Events in quadrant C8,023,4881,167,878
Events in quadrant D9,145,7551,105,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385977
B0380973
C0367333
D0401863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179962011.116915%
B179971981.100183%
C17997900.500083%
D179972731.516919%

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 19662 18000 24 24 0.12% 0.13%
B 19662 18000 8 8 0.04% 0.04%
C 19662 18000 0 0 0.00% 0.00%
D 19662 18000 157 157 0.80% 0.87%

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 0 247 596486 1384.94 2082 2035 429.2
A 0 50 133874 307.16 2082 2035 429.2
A 0 226 76137 172.64 2082 2035 429.2
B 15 204 405616 998.1 2108 2056 404.3
B 5 85 88843 214.64 2108 2056 404.3
B 15 54 48205 114.14 2108 2056 404.3
C 1 16 49368 99.86 2041 2053 473.8
C 13 61 16471 30.43 2041 2053 473.8
C 12 4 15628 28.65 2041 2053 473.8
D 2 33 525280 1053.81 2026 1963 496.6
D 12 233 428652 859.23 2026 1963 496.6
D 7 237 138986 275.93 2026 1963 496.6

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