ASTROSAT CZTI

Data Quality Report

Orbit 31199

Creation date: 2024-06-27T20:24:54.383030
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/AS1A10_103T02_9000004514_31199cztM0_level2.evt modeM0/AS1A10_103T02_9000004514_31199cztM0_level2_quad_clean.evt
Size (bytes)721,022,400119,787,840
Size687.6 MB 114.2 MB
Events in quadrant A3,634,675801,317
Events in quadrant B6,632,145777,786
Events in quadrant C3,866,815773,732
Events in quadrant D7,172,157728,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160792
B0254112
C0166112
D0268632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7841270.344344%
B78423384.310125%
C78421191.517470%
D78425476.975261%

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 8541 7843 0 0 0.00% 0.00%
B 8542 7844 117 117 1.37% 1.49%
C 8542 7844 11 11 0.13% 0.14%
D 8542 7844 320 320 3.75% 4.08%

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 13294 65.36 941 922 189.3
A 3 137 9735 46.56 941 922 189.3
A 0 226 8056 37.69 941 922 189.3
B 6 159 2226136 12514.46 923 897 177.8
B 4 80 601484 3377.62 923 897 177.8
B 0 190 63541 352.3 923 897 177.8
C 14 238 145994 686.15 899 901 211.5
C 10 22 132434 622.02 899 901 211.5
C 0 10 34089 156.95 899 901 211.5
D 8 195 2869453 12666.05 876 856 226.5
D 12 79 811297 3578.44 876 856 226.5
D 2 250 65561 285.7 876 856 226.5

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