ASTROSAT CZTI

Data Quality Report

Orbit 49837

Creation date: 2024-12-15T05:22:17.145553
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_037T01_9000006440_49837cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49837cztM0_level2_quad_clean.evt
Size (bytes)1,158,768,00041,679,360
Size1.1 GB 39.7 MB
Events in quadrant A12,742,705184,933
Events in quadrant B3,704,537603,311
Events in quadrant C11,807,3159,517
Events in quadrant D14,179,74147,875

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419591
B0150701
C0391651
D0462054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951422170.929256%
B59511322.218115%
C5952587798.739919%
D5951544191.430012%

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 7021 5951 3911 3911 55.70% 65.72%
B 7021 5952 75 75 1.07% 1.26%
C 7022 5952 2795 2795 39.80% 46.96%
D 7020 5950 4908 4908 69.91% 82.49%

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 4 4 7018872 58677.61 457 444 119.6
A 0 98 866732 7242.61 457 444 119.6
A 3 84 840285 7021.5 457 444 119.6
B 10 28 373104 2809.08 625 604 132.6
B 0 229 317685 2391.16 625 604 132.6
B 10 44 110537 829.02 625 604 132.6
C 15 230 4833706 102747.84 147 145 47.0
C 15 197 2048970 43552.23 147 145 47.0
C 15 174 872866 18551.58 147 145 47.0
D 8 176 3105819 50653.7 195 187 61.3
D 7 61 2320821 37850.17 195 187 61.3
D 7 126 1398573 22808.05 195 187 61.3

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