ASTROSAT CZTI

Data Quality Report

Orbit 52593

Creation date: 2025-06-18T23:46:13.915179
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/AS1C09_011T06_9000006478_52593cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52593cztM0_level2_quad_clean.evt
Size (bytes)2,638,676,160204,603,840
Size2.5 GB 195.1 MB
Events in quadrant A9,871,0851,686,112
Events in quadrant B23,637,1091,415,641
Events in quadrant C27,021,1441,047,374
Events in quadrant D35,701,620749,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426124
B0832664
C0933714
D01190264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187825472.912363%
B18782451024.012352%
C18783721238.396422%
D187831036155.161582%

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 19987 18783 253 253 1.27% 1.35%
B 19987 18782 3413 3413 17.08% 18.17%
C 19987 18784 6577 6577 32.91% 35.01%
D 19988 18784 10303 10303 51.55% 54.85%

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 4 249 428987 875.17 1971 1925 488.0
A 5 243 314512 640.58 1971 1925 488.0
A 15 174 244355 496.81 1971 1925 488.0
B 10 254 7899855 21186.69 1775 1710 372.8
B 10 44 4788555 12840.66 1775 1710 372.8
B 10 128 803930 2151.95 1775 1710 372.8
C 15 248 19524698 48044.62 1472 1459 406.4
C 13 3 799869 1964.8 1472 1459 406.4
C 12 249 166173 405.34 1472 1459 406.4
D 15 125 15508826 37364.42 1407 1340 415.0
D 2 62 3745972 9022.48 1407 1340 415.0
D 8 176 3186326 7674.04 1407 1340 415.0

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