ASTROSAT CZTI

Data Quality Report

Orbit 56786

Creation date: 2026-03-28T01:45:46.129057
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_9000006562_56786cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56786cztM0_level2_quad_clean.evt
Size (bytes)495,544,320100,929,600
Size472.6 MB 96.3 MB
Events in quadrant A5,455,022645,686
Events in quadrant B4,071,195696,651
Events in quadrant C4,817,853621,301
Events in quadrant D3,450,384600,276

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210352
B0172142
C0193632
D0156332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70723014.256222%
B70722914.114819%
C70721922.714932%
D7072540.763575%

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 7607 7073 177 177 2.33% 2.50%
B 7607 7073 201 201 2.64% 2.84%
C 7607 7073 158 158 2.08% 2.23%
D 7607 7073 50 50 0.66% 0.71%

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 3 14 1682247 9179.59 739 719 183.2
A 10 251 610151 3326.94 739 719 183.2
A 3 62 222864 1212.71 739 719 183.2
B 8 128 563416 3577.16 731 704 157.3
B 15 69 159636 1010.33 731 704 157.3
B 2 249 112693 711.91 731 704 157.3
C 9 38 821477 4194.68 713 702 195.7
C 15 230 585939 2990.94 713 702 195.7
C 1 28 178134 906.79 713 702 195.7
D 2 249 355640 1751.68 720 687 202.6
D 5 173 53430 260.28 720 687 202.6
D 8 160 45357 220.44 720 687 202.6

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