ASTROSAT CZTI

Data Quality Report

Orbit 43751

Creation date: 2024-06-27T22:55:20.718748
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_026T01_9000005904_43751cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43751cztM0_level2_quad_clean.evt
Size (bytes)542,520,000103,400,640
Size517.4 MB 98.6 MB
Events in quadrant A5,629,103690,898
Events in quadrant B3,332,148735,999
Events in quadrant C3,474,158705,938
Events in quadrant D7,163,248562,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212201
B0139761
C0145061
D0256391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62394016.427312%
B62391522.436288%
C62391322.115724%
D6239101116.204520%

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 7229 6240 148 148 2.05% 2.37%
B 7229 6240 27 27 0.37% 0.43%
C 7229 6240 42 42 0.58% 0.67%
D 7229 6240 804 804 11.12% 12.88%

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 63 957493 6322.35 724 709 151.3
A 10 83 911296 6017.09 724 709 151.3
A 15 223 432470 2853.04 724 709 151.3
B 0 199 100677 700.73 733 713 142.7
B 4 171 80712 560.78 733 713 142.7
B 0 200 41687 287.22 733 713 142.7
C 15 158 325587 1939.07 711 717 167.5
C 15 173 126284 749.48 711 717 167.5
C 15 157 121752 722.43 711 717 167.5
D 15 0 1069279 6086.63 679 658 175.6
D 1 52 914338 5204.12 679 658 175.6
D 5 235 668711 3805.09 679 658 175.6

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