ASTROSAT CZTI

Data Quality Report

Orbit 58168

Creation date: 2026-06-30T11:00:58.704912
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/AS1A14_042T02_9000006586_58168cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58168cztM0_level2_quad_clean.evt
Size (bytes)1,142,596,80084,326,400
Size1.1 GB 80.4 MB
Events in quadrant A3,624,692774,076
Events in quadrant B18,285,158142,257
Events in quadrant C3,782,693733,886
Events in quadrant D15,991,963352,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140687739910184140685948747822
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165621
B0597998
C0171681
D0529691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7907530.670292%
B7906665284.138629%
C7906710.898052%
D7906427154.022262%

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 7906 7906 1 1 0.01% 0.01%
B 7905 7905 6330 6330 80.08% 80.08%
C 7905 7905 53 53 0.67% 0.67%
D 7905 7905 4748 4748 60.06% 60.06%

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 2 143 57212 255.32 901 879 220.6
A 4 3 37930 167.93 901 879 220.6
A 13 254 13302 56.31 901 879 220.6
B 10 128 15774209 187263.23 385 371 84.2
B 2 249 727071 8627.21 385 371 84.2
B 10 247 108411 1282.63 385 371 84.2
C 6 223 208349 879.11 866 860 236.0
C 12 252 70117 293.44 866 860 236.0
C 15 208 34197 141.25 866 860 236.0
D 12 110 11357605 55719.35 724 694 203.8
D 8 160 1195956 5864.2 724 694 203.8
D 3 12 116356 567.46 724 694 203.8

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