ASTROSAT CZTI

Data Quality Report

Orbit 58673

Creation date: 2026-08-02T13:11:46.254880
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_004T06_9000006594_58673cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58673cztM0_level2_quad_clean.evt
Size (bytes)457,560,00092,393,280
Size436.4 MB 88.1 MB
Events in quadrant A3,354,151612,368
Events in quadrant B3,130,064661,878
Events in quadrant C2,945,263604,543
Events in quadrant D7,036,200494,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143836
B0134601
C0130173
D0251687

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60691973.246004%
B6070731.202636%
C6069631.038062%
D606889014.667106%

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 7240 6071 128 128 1.77% 2.11%
B 7240 6071 15 15 0.21% 0.25%
C 7240 6071 24 24 0.33% 0.40%
D 7240 6071 775 775 10.70% 12.77%

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 4 249 341031 2027.59 678 663 167.9
A 10 17 218900 1300.05 678 663 167.9
A 10 251 67449 397.85 678 663 167.9
B 8 234 128816 893.01 671 645 143.5
B 0 186 79154 547.0 671 645 143.5
B 0 171 68689 474.09 671 645 143.5
C 12 254 89342 477.53 672 664 185.7
C 1 12 68453 365.05 672 664 185.7
C 14 254 39932 211.46 672 664 185.7
D 2 62 1925419 10785.29 622 593 178.5
D 2 249 1852574 10377.13 622 593 178.5
D 8 240 543255 3040.67 622 593 178.5

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