ASTROSAT CZTI

Data Quality Report

Orbit 27911

Creation date: 2024-06-27T19:45:53.620696
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_048T06_9000004030_27911cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27911cztM0_level2_quad_clean.evt
Size (bytes)658,198,080102,147,840
Size627.7 MB 97.4 MB
Events in quadrant A4,085,185669,973
Events in quadrant B3,932,499683,087
Events in quadrant C3,485,287645,909
Events in quadrant D7,942,410591,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168210
B0163620
C0150020
D0288250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72121972.731559%
B72121201.663894%
C72111051.456109%
D721189712.439329%

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 7647 7213 175 175 2.29% 2.43%
B 7647 7213 6 6 0.08% 0.08%
C 7646 7211 0 0 0.00% 0.00%
D 7646 7212 861 861 11.26% 11.94%

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 6 16 645573 3626.52 883 863 177.8
A 15 174 19599 105.39 883 863 177.8
A 13 254 13409 70.57 883 863 177.8
B 10 245 310301 1811.95 884 861 170.8
B 0 230 123545 718.39 884 861 170.8
B 12 111 20712 116.24 884 861 170.8
C 14 238 133667 673.13 839 844 197.3
C 3 233 69258 346.71 839 844 197.3
C 15 208 7640 34.44 839 844 197.3
D 1 52 2954258 15230.99 811 789 193.9
D 8 195 1136524 5856.97 811 789 193.9
D 7 69 316677 1629.03 811 789 193.9

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