ASTROSAT CZTI

Data Quality Report

Orbit 02827

Creation date: 2024-06-27T14:22:09.536513
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/AS1P01_999T99_9000000410_02827cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02827cztM0_level2_quad_clean.evt
Size (bytes)1,995,655,68062,844,480
Size1.9 GB 59.9 MB
Events in quadrant A10,308,367405,531
Events in quadrant B14,696,936378,080
Events in quadrant C18,449,824246,526
Events in quadrant D16,512,544366,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357152
B0488461
C0605491
D0544301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7248891.227925%
B724892412.748344%
C7248396954.759934%
D7248206428.476821%

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 7313 7250 714 714 9.76% 9.85%
B 7313 7250 3298 3298 45.10% 45.49%
C 7313 7250 4842 4842 66.21% 66.79%
D 7313 7250 4370 4370 59.76% 60.28%

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 31 151957 249.39 2562 2539 599.1
A 0 50 125841 205.8 2562 2539 599.1
A 0 226 68310 109.78 2562 2539 599.1
B 0 191 1711648 2804.76 2568 2544 609.4
B 0 219 784611 1283.43 2568 2544 609.4
B 3 10 674939 1103.45 2568 2544 609.4
C 0 64 7819210 15334.22 1740 1796 509.8
C 0 219 1397212 2737.17 1740 1796 509.8
C 1 16 770484 1507.82 1740 1796 509.8
D 0 226 4047516 6162.66 2185 2216 656.4
D 1 66 2474980 3767.04 2185 2216 656.4
D 1 83 758351 1151.9 2185 2216 656.4

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
Veto Counter