ASTROSAT CZTI

Data Quality Report

Orbit 58368

Creation date: 2026-07-12T11:19:25.120063
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_58368cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58368cztM0_level2_quad_clean.evt
Size (bytes)437,941,44097,329,600
Size417.7 MB 92.8 MB
Events in quadrant A3,453,497645,794
Events in quadrant B5,906,397624,767
Events in quadrant C3,084,948632,987
Events in quadrant D3,257,450588,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148652
B0219512
C0139732
D0143472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65391832.798593%
B6539101615.537544%
C6539721.101086%
D6539881.345772%

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 7679 6539 63 63 0.82% 0.96%
B 7679 6539 565 565 7.36% 8.64%
C 7679 6540 15 15 0.20% 0.23%
D 7679 6540 23 23 0.30% 0.35%

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 80 317741 1747.35 742 724 181.4
A 9 255 48384 262.69 742 724 181.4
A 8 246 43787 237.36 742 724 181.4
B 5 172 2420884 16114.56 695 669 150.2
B 10 128 380356 2528.08 695 669 150.2
B 6 255 113248 749.59 695 669 150.2
C 1 16 75932 377.6 723 716 199.2
C 4 5 51778 256.34 723 716 199.2
C 14 245 38896 191.67 723 716 199.2
D 11 129 148493 731.16 716 685 202.2
D 8 160 123541 607.73 716 685 202.2
D 5 173 43758 213.07 716 685 202.2

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