ASTROSAT CZTI

Data Quality Report

Orbit 25281

Creation date: 2024-06-27T19:15:51.197004
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/AS1A09_006T01_9000003700_25281cztM0_level2.evt modeM0/AS1A09_006T01_9000003700_25281cztM0_level2_quad_clean.evt
Size (bytes)972,201,600147,173,760
Size927.2 MB 140.4 MB
Events in quadrant A5,920,635925,796
Events in quadrant B6,580,047929,241
Events in quadrant C6,784,172874,092
Events in quadrant D9,301,471851,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257210
B0275740
C0281480
D0361420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12678460.362833%
B126792852.247811%
C126793142.476536%
D126794383.454531%

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 14123 12680 2 2 0.01% 0.02%
B 14124 12681 112 112 0.79% 0.88%
C 14124 12681 187 187 1.32% 1.47%
D 14124 12681 384 384 2.72% 3.03%

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 13 254 19728 59.15 1533 1501 308.1
A 3 137 14272 41.44 1533 1501 308.1
A 0 226 12981 37.25 1533 1501 308.1
B 3 64 615968 2120.11 1507 1471 289.8
B 12 111 35912 118.82 1507 1471 289.8
B 11 111 31694 104.27 1507 1471 289.8
C 0 239 735437 2173.57 1440 1449 337.7
C 14 238 228037 671.0 1440 1449 337.7
C 0 207 144829 424.59 1440 1449 337.7
D 1 52 2044324 5771.71 1462 1420 354.0
D 8 195 1522375 4297.08 1462 1420 354.0
D 5 222 105911 295.21 1462 1420 354.0

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