ASTROSAT CZTI

Data Quality Report

Orbit 37626

Creation date: 2024-06-27T21:42:22.300611
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/AS1A11_075T01_9000005342_37626cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37626cztM0_level2_quad_clean.evt
Size (bytes)626,198,40068,993,280
Size597.2 MB 65.8 MB
Events in quadrant A7,864,064402,195
Events in quadrant B3,148,805444,562
Events in quadrant C2,853,503450,067
Events in quadrant D4,709,226389,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273423
B0132302
C0120592
D0182912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5750142824.834783%
B5750831.443478%
C5750260.452174%
D575082614.365217%

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 9066 5752 1314 1314 14.49% 22.84%
B 9066 5750 46 46 0.51% 0.80%
C 9066 5750 27 27 0.30% 0.47%
D 9066 5751 755 755 8.33% 13.13%

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 15 222 5125336 41929.83 603 590 122.2
A 10 83 315574 2577.15 603 590 122.2
A 9 143 48131 388.97 603 590 122.2
B 5 172 231452 1847.83 641 624 124.9
B 4 80 191195 1525.57 641 624 124.9
B 0 230 37655 296.44 641 624 124.9
C 15 214 264615 1799.63 628 630 146.7
C 0 10 122207 828.81 628 630 146.7
C 14 254 13562 88.16 628 630 146.7
D 12 233 1616013 11655.7 573 555 138.6
D 2 249 319590 2301.87 573 555 138.6
D 2 250 139799 1004.66 573 555 138.6

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