ASTROSAT CZTI

Data Quality Report

Orbit 34536

Creation date: 2022-02-16T14:50:34.597462
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/AS1A06_005T01_9000004932_34536cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34536cztM0_level2_quad_clean.evt
Size (bytes)315,132,48037,356,480
Size300.5 MB 35.6 MB
Events in quadrant A1,781,277224,436
Events in quadrant B2,701,020214,727
Events in quadrant C2,119,415223,676
Events in quadrant D2,695,712211,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074551
B0103291
C084791
D0103731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A361630.082965%
B36162567.079646%
C3616160.442478%
D3616762.101770%

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 3616 3616 0 0 0.00% 0.00%
B 3616 3616 164 164 4.54% 4.54%
C 3616 3616 12 12 0.33% 0.33%
D 3616 3616 56 56 1.55% 1.55%

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 10 83 21288 232.26 448 440 89.8
A 9 143 18551 201.76 448 440 89.8
A 13 6 7876 82.84 448 440 89.8
B 5 172 976386 11802.17 432 422 82.7
B 4 170 10042 116.33 432 422 82.7
B 12 111 9558 110.48 432 422 82.7
C 14 67 187654 1835.88 439 442 102.0
C 15 214 160032 1565.01 439 442 102.0
C 0 10 50160 487.56 439 442 102.0
D 8 195 691298 6442.21 438 426 107.2
D 13 249 157060 1460.57 438 426 107.2
D 12 6 62831 581.91 438 426 107.2

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