ASTROSAT CZTI

Data Quality Report

Orbit 35030

Creation date: 2022-06-11T13:29:51.330638
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/AS1T05_010T01_9000005016_35030cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35030cztM0_level2_quad_clean.evt
Size (bytes)421,306,56068,912,640
Size401.8 MB 65.7 MB
Events in quadrant A2,623,135447,803
Events in quadrant B2,880,517453,499
Events in quadrant C2,824,546433,275
Events in quadrant D4,099,232409,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107083
B0114852
C0111892
D0155962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A488880.163666%
B4888631.288871%
C4888501.022913%
D48882785.687398%

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 6982 4889 0 0 0.00% 0.00%
B 6982 4889 24 24 0.34% 0.49%
C 6982 4889 45 45 0.64% 0.92%
D 6982 4889 226 226 3.24% 4.62%

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 77974 596.7 655 645 129.6
A 13 6 14381 105.99 655 645 129.6
A 13 254 8310 59.14 655 645 129.6
B 5 172 194955 1623.72 649 635 119.7
B 4 232 53244 439.59 649 635 119.7
B 0 190 51823 427.72 649 635 119.7
C 15 214 204865 1446.78 621 629 141.2
C 0 10 142347 1003.91 621 629 141.2
C 14 67 43119 300.99 621 629 141.2
D 8 195 798624 5467.05 606 592 146.0
D 10 118 388940 2660.44 606 592 146.0
D 12 233 190417 1300.43 606 592 146.0

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