ASTROSAT CZTI

Data Quality Report

Orbit 46682

Creation date: 2024-06-27T23:26:27.053728
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/AS1A13_092T19_9000006252_46682cztM0_level2.fits modeM0/AS1A13_092T19_9000006252_46682cztM0_level2_quad_clean.evt
Size (bytes)692,614,080129,418,560
Size660.5 MB 123.4 MB
Events in quadrant A7,877,926835,144
Events in quadrant B4,221,269878,906
Events in quadrant C3,814,595877,128
Events in quadrant D9,071,165740,818

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288593
B0183631
C0176541
D0328893

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84454615.458851%
B84453524.168147%
C8446891.053753%
D84457629.023091%

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 8460 8446 36 36 0.43% 0.43%
B 8460 8446 13 13 0.15% 0.15%
C 8461 8447 3 3 0.04% 0.04%
D 8461 8447 373 373 4.41% 4.42%

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 10 83 3832354 18980.44 960 935 201.9
A 13 248 253452 1250.94 960 935 201.9
A 15 235 45920 222.85 960 935 201.9
B 4 171 160530 823.66 964 931 193.8
B 0 198 59947 304.57 964 931 193.8
B 0 190 56931 289.0 964 931 193.8
C 15 208 36804 158.6 954 956 226.0
C 14 254 35525 152.94 954 956 226.0
C 9 237 8637 33.98 954 956 226.0
D 1 52 4405660 18865.87 924 892 233.5
D 13 249 573848 2454.0 924 892 233.5
D 12 128 130277 554.16 924 892 233.5

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