ASTROSAT CZTI

Data Quality Report

Orbit 53493

Creation date: 2025-08-18T13:18:42.590944
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_002T07_9000006498_53493cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53493cztM0_level2_quad_clean.evt
Size (bytes)1,794,677,760165,490,560
Size1.7 GB 157.8 MB
Events in quadrant A19,332,261990,865
Events in quadrant B15,284,6941,134,232
Events in quadrant C23,023,335762,764
Events in quadrant D7,726,1431,164,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0671612
B0550962
C0781422
D0331202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13859387027.924093%
B13858317822.932602%
C13858574541.456199%
D138582131.537018%

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 14308 13859 3502 3502 24.48% 25.27%
B 14307 13858 2625 2625 18.35% 18.94%
C 14307 13858 5807 5807 40.59% 41.90%
D 14307 13858 233 233 1.63% 1.68%

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 63 6899923 21276.39 1321 1292 324.2
A 3 62 4724389 14566.73 1321 1292 324.2
A 15 174 1870587 5765.18 1321 1292 324.2
B 2 249 7955081 27748.34 1342 1294 286.6
B 4 171 609869 2123.13 1342 1294 286.6
B 10 254 400299 1392.01 1342 1294 286.6
C 7 64 12656169 40012.41 1148 1137 316.3
C 15 224 2360237 7458.95 1148 1137 316.3
C 15 178 1088981 3439.52 1148 1137 316.3
D 2 16 698146 1727.79 1434 1371 403.3
D 3 12 361568 893.18 1434 1371 403.3
D 1 0 263256 649.39 1434 1371 403.3

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