ASTROSAT CZTI

Data Quality Report

Orbit 20250331_A13_090T01_9000006458_level2

Creation date: 2025-04-17T03:09:06.845230
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_090T01_9000006458cztM0_level2.fits modeM0/AS1A13_090T01_9000006458cztM0_level2_quad_clean.evt
Size (bytes)4,805,458,5606,605,712,000
Size4.5 GB 6.2 GB
Events in quadrant A28,368,37642,141,031
Events in quadrant B27,802,00047,554,860
Events in quadrant C24,941,96935,194,278
Events in quadrant D22,268,57433,220,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022652060
B017878070
C023880840
D025751170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06790
B06800
C06800
D06800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123010
B0124520
C0124360
D0124340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6124098613214.064457%
B612967586349.565605%
C61236114690123.989281%
D61266214489923.650724%

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 777732 612274 0 0 0.00% 0.00%
B 777733 613549 0 0 0.00% 0.00%
C 777725 600092 0 0 0.00% 0.00%
D 777732 605693 0 0 0.00% 0.00%

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 14 188 29722 9.33 7495 6917 2443.5
A 9 255 28957 9.02 7495 6917 2443.5
A 14 95 23808 6.91 7495 6917 2443.5
B 3 25 22862 9.32 7386 6969 1706.1
B 9 173 22372 9.03 7386 6969 1706.1
B 2 245 22272 8.97 7386 6969 1706.1
C 15 175 19800 6.08 6704 6106 2252.3
C 2 31 19752 6.06 6704 6106 2252.3
C 15 127 19749 6.06 6704 6106 2252.3
D 6 218 28411 10.63 6394 5667 2139.9
D 3 30 22008 7.64 6394 5667 2139.9
D 15 11 20212 6.8 6394 5667 2139.9

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