ASTROSAT CZTI

Data Quality Report

Orbit 56091

Creation date: 2026-02-09T10:07:25.717173
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_56091cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56091cztM0_level2_quad_clean.evt
Size (bytes)697,599,360111,827,520
Size665.3 MB 106.6 MB
Events in quadrant A6,073,483712,382
Events in quadrant B4,424,371829,168
Events in quadrant C5,947,496682,139
Events in quadrant D8,727,377579,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243030
B0188460
C0235660
D0319290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83857378.789505%
B8385470.560525%
C83856437.668456%
D8385147517.590936%

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 8385 8385 616 616 7.35% 7.35%
B 8385 8385 13 13 0.16% 0.16%
C 8385 8384 438 438 5.22% 5.22%
D 8385 8385 1390 1390 16.58% 16.58%

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 8 9 1045469 4927.86 850 829 212.0
A 15 32 793590 3739.68 850 829 212.0
A 0 8 467005 2199.08 850 829 212.0
B 9 254 482635 2577.8 880 852 186.9
B 4 21 119975 637.37 880 852 186.9
B 7 252 72244 381.99 880 852 186.9
C 12 254 823692 3633.75 825 818 226.5
C 15 147 799491 3526.88 825 818 226.5
C 8 7 306480 1349.78 825 818 226.5
D 8 129 1942975 8811.54 781 746 220.4
D 2 120 1345444 6100.65 781 746 220.4
D 2 62 1072180 4860.9 781 746 220.4

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