ASTROSAT CZTI

Data Quality Report

Orbit 06928

Creation date: 2024-06-27T15:13:11.075951
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/AS1A02_005T01_9000000948_06928cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06928cztM0_level2_quad_clean.evt
Size (bytes)481,838,40077,474,880
Size459.5 MB 73.9 MB
Events in quadrant A2,722,806494,962
Events in quadrant B3,359,969500,882
Events in quadrant C4,589,689453,042
Events in quadrant D3,505,727470,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123502
B0140851
C0179731
D0145581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6098500.819941%
B6098811.328304%
C609869011.315185%
D60981762.886192%

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 7063 6099 0 0 0.00% 0.00%
B 7063 6099 14 14 0.20% 0.23%
C 7063 6099 612 612 8.66% 10.03%
D 7063 6099 118 118 1.67% 1.93%

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 0 226 6829 42.39 704 689 144.8
A 12 194 6593 40.76 704 689 144.8
A 0 128 5897 35.95 704 689 144.8
B 0 228 431735 3173.35 704 686 135.8
B 4 48 81473 594.75 704 686 135.8
B 4 81 34412 248.29 704 686 135.8
C 9 247 2058298 13673.0 646 649 150.5
C 12 4 5765 34.0 646 649 150.5
C 13 61 5169 30.04 646 649 150.5
D 5 239 313721 1886.62 677 656 165.9
D 2 136 268411 1613.57 677 656 165.9
D 8 195 134684 807.69 677 656 165.9

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