ASTROSAT CZTI

Data Quality Report

Orbit 45682

Creation date: 2024-06-27T23:15:00.007261
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_071T05_9000006120_45682cztM0_level2.fits modeM0/AS1A13_071T05_9000006120_45682cztM0_level2_quad_clean.evt
Size (bytes)919,733,760111,847,680
Size877.1 MB 106.7 MB
Events in quadrant A6,905,586833,790
Events in quadrant B4,245,406848,138
Events in quadrant C14,934,592493,750
Events in quadrant D7,359,076668,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258270
B0178570
C0497243
D0272330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7787620.796199%
B7788991.271186%
C7787367247.155516%
D7787108413.920637%

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 7787 7787 3 3 0.04% 0.04%
B 7788 7788 71 71 0.91% 0.91%
C 7787 7787 4114 4114 52.83% 52.83%
D 7787 7787 911 911 11.70% 11.70%

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 3338254 18412.36 862 843 181.3
A 13 248 81741 446.31 862 843 181.3
A 10 248 45621 247.04 862 843 181.3
B 5 255 290552 1718.23 862 836 168.6
B 3 112 212088 1252.88 862 836 168.6
B 5 172 85149 500.04 862 836 168.6
C 9 54 11762585 70517.82 706 710 166.8
C 14 254 277369 1658.7 706 710 166.8
C 12 2 59553 352.79 706 710 166.8
D 1 52 3310801 16352.75 790 764 202.4
D 2 249 279164 1375.39 790 764 202.4
D 13 249 235439 1159.38 790 764 202.4

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