ASTROSAT CZTI

Data Quality Report

Orbit 56510

Creation date: 2026-03-09T11:54:17.755649
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_060T01_9000006556_56510cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56510cztM0_level2_quad_clean.evt
Size (bytes)514,065,600111,254,400
Size490.3 MB 106.1 MB
Events in quadrant A4,475,864719,073
Events in quadrant B5,539,773743,973
Events in quadrant C3,777,056709,390
Events in quadrant D4,625,302649,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187854
B0218034
C0170304
D0191254

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78573474.416444%
B78577659.736541%
C78581912.430644%
D78583023.843217%

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 9062 7859 121 121 1.34% 1.54%
B 9062 7859 272 272 3.00% 3.46%
C 9063 7860 9 9 0.10% 0.11%
D 9063 7860 110 110 1.21% 1.40%

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 7 64 284987 1291.62 888 865 220.0
A 8 206 280573 1271.55 888 865 220.0
A 4 95 125787 567.9 888 865 220.0
B 4 206 990236 5249.67 867 831 188.5
B 0 213 410896 2175.76 867 831 188.5
B 4 171 164759 869.78 867 831 188.5
C 12 252 151761 629.26 882 873 239.8
C 13 3 58813 241.63 882 873 239.8
C 11 244 22350 89.57 882 873 239.8
D 3 12 399209 1643.83 867 827 242.4
D 2 249 214543 881.85 867 827 242.4
D 8 160 115662 473.84 867 827 242.4

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