ASTROSAT CZTI

Data Quality Report

Orbit 56117

Creation date: 2026-02-11T01:26:41.329975
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_083T03_9000006548_56117cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56117cztM0_level2_quad_clean.evt
Size (bytes)709,332,48089,720,640
Size676.5 MB 85.6 MB
Events in quadrant A12,660,633362,906
Events in quadrant B3,464,599701,139
Events in quadrant C4,103,706615,547
Events in quadrant D5,491,384554,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424152
B0152632
C0172772
D0213155

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6925348150.267148%
B6926891.285013%
C69261952.815478%
D69254666.729242%

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 7635 6926 3053 3053 39.99% 44.08%
B 7636 6928 23 23 0.30% 0.33%
C 7636 6928 174 174 2.28% 2.51%
D 7635 6926 456 456 5.97% 6.58%

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 12 115 6127946 41211.66 600 584 148.7
A 15 32 3196167 21492.98 600 584 148.7
A 3 14 399853 2685.42 600 584 148.7
B 10 247 242461 1547.51 730 702 156.2
B 4 171 112793 717.5 730 702 156.2
B 7 252 38753 243.57 730 702 156.2
C 12 254 848363 4411.37 700 691 192.2
C 9 38 348104 1807.97 700 691 192.2
C 13 3 71336 367.64 700 691 192.2
D 8 240 2252794 11541.2 684 653 195.1
D 2 249 142011 724.4 684 653 195.1
D 6 239 116686 594.62 684 653 195.1

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