ASTROSAT CZTI

Data Quality Report

Orbit 45610

Creation date: 2024-06-27T23:14:13.284884
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_071T08_9000006114_45610cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45610cztM0_level2_quad_clean.evt
Size (bytes)711,109,440131,633,280
Size678.2 MB 125.5 MB
Events in quadrant A7,327,026907,916
Events in quadrant B5,520,829885,983
Events in quadrant C3,766,334886,804
Events in quadrant D9,055,927718,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276860
B0222850
C0174810
D0328450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84371401.659358%
B84385005.925575%
C8438200.237023%
D8438117013.865845%

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 8437 8437 16 16 0.19% 0.19%
B 8438 8438 317 317 3.76% 3.76%
C 8438 8438 13 13 0.15% 0.15%
D 8438 8438 977 977 11.58% 11.58%

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 3414348 17327.11 944 921 197.0
A 10 255 166016 838.05 944 921 197.0
A 0 243 46035 229.01 944 921 197.0
B 15 201 1049098 5701.11 928 897 183.9
B 5 172 501072 2720.42 928 897 183.9
B 3 112 144062 778.66 928 897 183.9
C 14 254 99615 451.29 926 931 218.7
C 2 14 31300 138.88 926 931 218.7
C 12 2 19207 83.58 926 931 218.7
D 11 241 2898541 12849.06 881 851 225.5
D 8 48 1332897 5906.62 881 851 225.5
D 13 249 760822 3369.9 881 851 225.5

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