ASTROSAT CZTI

Data Quality Report

Orbit 27766

Creation date: 2024-06-27T19:44:03.391261
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_038T35_9000004006_27766cztM0_level2.evt modeM0/AS1A09_038T35_9000004006_27766cztM0_level2_quad_clean.evt
Size (bytes)488,272,320122,587,200
Size465.7 MB 116.9 MB
Events in quadrant A3,511,187832,672
Events in quadrant B3,670,793844,680
Events in quadrant C3,764,931800,171
Events in quadrant D3,405,398788,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148480
B0150720
C0152840
D0146720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63971612.516805%
B63971912.985775%
C63971582.469908%
D63971512.360481%

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 7057 6398 49 49 0.69% 0.77%
B 7057 6398 87 87 1.23% 1.36%
C 7057 6398 16 16 0.23% 0.25%
D 7057 6398 123 123 1.74% 1.92%

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 13 170 490211 3202.06 758 742 152.9
A 6 16 81791 530.21 758 742 152.9
A 8 192 12945 79.83 758 742 152.9
B 3 64 450095 3143.0 759 740 143.0
B 10 245 120263 836.0 759 740 143.0
B 0 190 52710 363.5 759 740 143.0
C 3 233 804353 4716.69 729 733 170.4
C 14 238 117740 686.75 729 733 170.4
C 13 61 5133 25.82 729 733 170.4
D 1 52 222693 1276.88 729 707 173.9
D 2 250 175916 1007.81 729 707 173.9
D 7 69 88990 507.81 729 707 173.9

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