ASTROSAT CZTI

Data Quality Report

Orbit 58763

Creation date: 2026-08-09T11:14:57.471497
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_106T01_9000006596_58763cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58763cztM0_level2_quad_clean.evt
Size (bytes)306,218,88078,802,560
Size292.0 MB 75.2 MB
Events in quadrant A3,214,874648,401
Events in quadrant B3,552,772688,318
Events in quadrant C3,585,770620,545
Events in quadrant D572,41954,489

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014783389
B015665296
C015841242
D01966217511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01404
B01404
C01402
D01404

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6767811.196985%
B67781592.345825%
C67891341.973781%
D657385.783866%

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 7278 6874 20 20 0.27% 0.29%
B 7278 6884 37 37 0.51% 0.54%
C 7279 6880 82 82 1.13% 1.19%
D 816 728 32 32 3.92% 4.40%

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 15 233 123062 661.95 745 723 184.8
A 3 14 62732 335.52 745 723 184.8
A 11 3 33447 177.06 745 723 184.8
B 4 201 145238 919.17 739 712 157.2
B 8 234 98630 622.75 739 712 157.2
B 0 171 87034 549.0 739 712 157.2
C 12 249 264652 1310.2 726 718 201.4
C 6 223 84753 417.16 726 718 201.4
C 12 250 77474 381.02 726 718 201.4
D 11 129 219194 10443.09 68 64 21.0
D 1 27 54082 2574.34 68 64 21.0
D 2 120 8997 425.72 68 64 21.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct