ASTROSAT CZTI

Data Quality Report

Orbit 24504

Creation date: 2024-06-27T19:06:39.910874
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_183T01_9000003606_24504cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24504cztM0_level2_quad_clean.evt
Size (bytes)483,647,040142,335,360
Size461.2 MB 135.7 MB
Events in quadrant A3,376,596999,140
Events in quadrant B3,938,416999,216
Events in quadrant C3,282,787941,483
Events in quadrant D3,618,496928,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141941
B0159091
C0139481
D0151072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6352801.259446%
B63532423.809224%
C63531101.731465%
D63521031.621537%

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 7607 6353 0 0 0.00% 0.00%
B 7608 6354 84 84 1.10% 1.32%
C 7608 6354 0 0 0.00% 0.00%
D 7607 6353 38 38 0.50% 0.60%

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 14 111 43703 251.44 862 847 170.4
A 4 2 11449 62.2 862 847 170.4
A 13 254 10438 56.27 862 847 170.4
B 3 64 604555 3925.1 843 828 153.8
B 12 111 17371 107.55 843 828 153.8
B 11 111 15659 96.42 843 828 153.8
C 14 238 132832 723.77 802 809 182.4
C 2 16 15450 80.26 802 809 182.4
C 13 61 5668 26.64 802 809 182.4
D 9 1 301243 1547.51 817 796 194.1
D 1 52 114261 584.42 817 796 194.1
D 12 238 45132 228.36 817 796 194.1

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