ASTROSAT CZTI

Data Quality Report

Orbit 59405

Creation date: 2026-09-20T06:14:24.464645
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_033T01_9000006608_59405cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59405cztM0_level2_quad_clean.evt
Size (bytes)680,886,720111,237,120
Size649.3 MB 106.1 MB
Events in quadrant A5,816,432691,778
Events in quadrant B4,068,163813,870
Events in quadrant C4,132,624736,790
Events in quadrant D10,566,527569,742

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230831
B0179611
C0181711
D0370081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80037569.446458%
B80041682.098951%
C8004891.111944%
D8004157819.715142%

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 8085 8071 669 669 8.27% 8.29%
B 8086 8072 52 52 0.64% 0.64%
C 8086 8072 60 60 0.74% 0.74%
D 8086 8072 1263 1263 15.62% 15.65%

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 14 238 2416857 11992.47 818 798 201.5
A 10 251 183002 904.4 818 798 201.5
A 3 245 19985 95.24 818 798 201.5
B 6 255 294964 1565.49 871 837 187.9
B 4 236 132582 701.21 871 837 187.9
B 0 186 45597 238.23 871 837 187.9
C 4 5 273531 1150.04 866 860 237.1
C 6 223 235492 989.6 866 860 237.1
C 6 13 66114 275.22 866 860 237.1
D 12 110 5322180 23496.26 801 763 226.5
D 13 138 1978510 8732.57 801 763 226.5
D 5 173 45885 199.23 801 763 226.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct