ASTROSAT CZTI

Data Quality Report

Orbit 19617

Creation date: 2024-06-27T18:04:50.086420
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/AS1T03_116T01_9000002916_19617cztM0_level2.evt modeM0/AS1T03_116T01_9000002916_19617cztM0_level2_quad_clean.evt
Size (bytes)523,693,44078,958,080
Size499.4 MB 75.3 MB
Events in quadrant A3,494,093482,093
Events in quadrant B3,644,882484,170
Events in quadrant C3,506,993463,583
Events in quadrant D4,718,565453,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150831
B0153751
C0150471
D0188551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72961201.644737%
B72971462.000822%
C72971401.918597%
D72972172.973825%

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 7511 7297 1 1 0.01% 0.01%
B 7512 7298 12 12 0.16% 0.16%
C 7512 7298 0 0 0.00% 0.00%
D 7512 7298 125 125 1.66% 1.71%

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 5 16 11153 55.96 904 885 183.5
A 0 226 7891 38.18 904 885 183.5
A 3 137 7511 36.11 904 885 183.5
B 7 220 63354 358.16 895 873 174.5
B 0 198 30263 168.47 895 873 174.5
B 4 216 24607 136.05 895 873 174.5
C 14 238 132976 646.16 859 865 204.5
C 3 233 17188 79.84 859 865 204.5
C 13 61 6018 25.2 859 865 204.5
D 7 238 1196372 5584.24 872 849 214.1
D 12 218 103742 480.61 872 849 214.1
D 1 52 90259 417.63 872 849 214.1

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