ASTROSAT CZTI

Data Quality Report

Orbit 58341

Creation date: 2026-07-10T16:12:17.698457
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_044T03_9000006588_58341cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58341cztM0_level2_quad_clean.evt
Size (bytes)444,553,92097,744,320
Size424.0 MB 93.2 MB
Events in quadrant A3,236,721652,141
Events in quadrant B5,123,134607,976
Events in quadrant C3,106,334635,187
Events in quadrant D4,446,079578,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147171
B0197495
C0145461
D0180651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69841772.534364%
B6983104714.993556%
C6983961.374767%
D69832543.637405%

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 7424 6985 10 10 0.13% 0.14%
B 7422 6983 469 469 6.32% 6.72%
C 7423 6984 11 11 0.15% 0.16%
D 7423 6984 98 98 1.32% 1.40%

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 13 248 69117 356.58 769 747 191.7
A 7 64 53714 276.25 769 747 191.7
A 2 143 47614 244.43 769 747 191.7
B 6 255 1502222 9902.66 711 685 151.6
B 8 234 88989 582.37 711 685 151.6
B 5 185 86603 566.63 711 685 151.6
C 6 13 53173 255.54 744 735 205.2
C 12 250 29309 139.25 744 735 205.2
C 12 249 24152 114.12 744 735 205.2
D 12 110 683935 3236.98 739 705 211.1
D 8 160 339145 1603.45 739 705 211.1
D 11 129 190221 897.88 739 705 211.1

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