ASTROSAT CZTI

Data Quality Report

Orbit 52993

Creation date: 2025-07-15T20:08:08.541868
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/AS1A13_003T01_9000006486_52993cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52993cztM0_level2_quad_clean.evt
Size (bytes)941,371,20069,534,720
Size897.8 MB 66.3 MB
Events in quadrant A13,364,382226,718
Events in quadrant B4,209,709651,441
Events in quadrant C4,325,744554,881
Events in quadrant D12,451,172224,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441021
B0169991
C0173321
D0413763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404440968.847595%
B64042193.419738%
C64043375.262336%
D6404413764.600250%

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 7284 6404 3651 3651 50.12% 57.01%
B 7283 6404 50 50 0.69% 0.78%
C 7283 6404 198 198 2.72% 3.09%
D 7284 6404 3160 3160 43.38% 49.34%

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 9 191 7265440 59889.8 478 465 121.3
A 7 206 2772325 22850.2 478 465 121.3
A 15 190 1196855 9862.6 478 465 121.3
B 10 254 976323 6610.79 683 660 147.6
B 5 185 107501 723.92 683 660 147.6
B 10 63 88913 597.98 683 660 147.6
C 12 254 634178 3528.09 659 653 179.6
C 9 38 249002 1383.05 659 653 179.6
C 1 241 173263 961.26 659 653 179.6
D 2 62 5830172 44023.2 460 437 132.4
D 0 5 1544269 11658.24 460 437 132.4
D 12 17 1441012 10878.49 460 437 132.4

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