ASTROSAT CZTI

Data Quality Report

Orbit 16746

Creation date: 2024-06-27T17:27:08.139847
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/AS1A05_202T01_9000002484_16746cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16746cztM0_level2_quad_clean.evt
Size (bytes)542,246,40097,738,560
Size517.1 MB 93.2 MB
Events in quadrant A2,919,991665,963
Events in quadrant B3,132,432672,654
Events in quadrant C2,919,348637,544
Events in quadrant D7,069,618590,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122042
B0128421
C0122061
D0249581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56121031.835353%
B56121372.441197%
C56121432.548111%
D561286215.359943%

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 6908 5613 0 0 0.00% 0.00%
B 6908 5613 19 19 0.28% 0.34%
C 6908 5613 0 0 0.00% 0.00%
D 6908 5613 721 721 10.44% 12.85%

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 14 23584 154.01 745 732 148.4
A 14 31 18998 123.1 745 732 148.4
A 15 174 14336 91.68 745 732 148.4
B 15 35 78342 574.88 739 724 135.0
B 0 189 60552 443.11 739 724 135.0
B 7 220 49280 359.63 739 724 135.0
C 14 238 112894 704.2 701 707 159.3
C 3 233 51737 320.32 701 707 159.3
C 7 247 21697 131.75 701 707 159.3
D 1 52 3446123 20986.09 687 669 164.2
D 2 16 511737 3112.89 687 669 164.2
D 10 70 283699 1723.92 687 669 164.2

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