ASTROSAT CZTI

Data Quality Report

Orbit 53237

Creation date: 2025-08-01T04:57:25.337835
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_9000006490_53237cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53237cztM0_level2_quad_clean.evt
Size (bytes)801,008,64083,966,400
Size763.9 MB 80.1 MB
Events in quadrant A6,716,232549,985
Events in quadrant B8,682,118529,909
Events in quadrant C9,254,757447,726
Events in quadrant D4,508,323572,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242818
B0302062
C0319112
D0178862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334109217.240290%
B6334171627.091885%
C6334197931.244080%
D63342123.347016%

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 7588 6334 1007 1007 13.27% 15.90%
B 7589 6335 1357 1357 17.88% 21.42%
C 7589 6335 1759 1759 23.18% 27.77%
D 7588 6334 170 170 2.24% 2.68%

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 3 62 2993734 18952.85 626 609 157.9
A 7 206 567141 3587.35 626 609 157.9
A 14 254 231333 1460.97 626 609 157.9
B 12 33 4695946 35446.4 626 604 132.5
B 4 170 556653 4197.76 626 604 132.5
B 2 249 266366 2006.31 626 604 132.5
C 1 241 4066302 25930.68 570 566 156.8
C 15 224 1208257 7702.48 570 566 156.8
C 9 38 943601 6014.54 570 566 156.8
D 11 245 530684 2853.08 650 621 185.8
D 15 125 323473 1737.76 650 621 185.8
D 6 239 231635 1243.44 650 621 185.8

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