ASTROSAT CZTI

Data Quality Report

Orbit 20200218_C05_007T01_9000003518_level2

Creation date: 2025-12-09T10:48:59.429794
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/AS1C05_007T01_9000003518cztM0_level2.fits modeM0/AS1C05_007T01_9000003518cztM0_level2_quad_clean.evt
Size (bytes)451,362,240419,610,240
Size430.5 MB 400.2 MB
Events in quadrant A2,877,9222,570,386
Events in quadrant B2,300,9362,163,288
Events in quadrant C2,822,1052,481,938
Events in quadrant D2,428,1162,253,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0560
C0560
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09920
B09940
C010060
D010000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010420
B0924270
C01039720
D01399340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490916681.360738%
B4118212262.977029%
C4903511242.292240%
D4888719824.054248%

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 56897 49983 0 0 0.00% 0.00%
B 46322 41610 0 0 0.00% 0.00%
C 56897 49945 0 0 0.00% 0.00%
D 56897 49742 0 0 0.00% 0.00%

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 0 29 2582 10.1 747 699 186.4
A 7 110 2307 8.63 747 699 186.4
A 9 19 2172 7.9 747 699 186.4
B 2 9 1904 10.96 607 577 121.1
B 5 232 1590 8.37 607 577 121.1
B 2 8 1573 8.23 607 577 121.1
C 12 241 1943 6.54 746 695 190.9
C 9 233 1921 6.42 746 695 190.9
C 3 126 1914 6.38 746 695 190.9
D 3 14 1744 5.98 692 630 186.1
D 7 3 1703 5.76 692 630 186.1
D 3 159 1678 5.63 692 630 186.1

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