ASTROSAT CZTI

Data Quality Report

Orbit 20230525_T05_108T01_9000005664_level2

Creation date: 2023-05-26T10:58:33.412652
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_108T01_9000005664cztM0_level2.fits modeM0/AS1T05_108T01_9000005664cztM0_level2_quad_clean.evt
Size (bytes)176,754,240144,017,280
Size168.6 MB 137.3 MB
Events in quadrant A1,044,550768,748
Events in quadrant B1,011,498766,382
Events in quadrant C1,004,972731,496
Events in quadrant D886,468688,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441140
B0429520
C0474760
D0504880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20397500.245134%
B203971110.544198%
C203975812.848458%
D203975502.696475%

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 28008 20398 0 0 0.00% 0.00%
B 28008 20397 0 0 0.00% 0.00%
C 28008 20328 0 0 0.00% 0.00%
D 28008 20386 0 0 0.00% 0.00%

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 29 858 8.47 272 256 71.1
A 9 19 850 8.36 272 256 71.1
A 7 110 837 8.17 272 256 71.1
B 2 9 843 10.89 267 254 54.1
B 3 80 755 9.26 267 254 54.1
B 3 17 736 8.91 267 254 54.1
C 1 81 886 9.08 266 249 70.2
C 1 80 857 8.67 266 249 70.2
C 1 65 752 7.17 266 249 70.2
D 4 160 673 6.41 252 229 69.3
D 6 231 670 6.37 252 229 69.3
D 7 3 655 6.15 252 229 69.3

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