ASTROSAT CZTI

Data Quality Report

Orbit 50854

Creation date: 2025-02-21T17:28:16.657506
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/AS1C07_001T01_9000006450_50854cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50854cztM0_level2_quad_clean.evt
Size (bytes)510,042,24085,095,360
Size486.4 MB 81.2 MB
Events in quadrant A4,796,723546,648
Events in quadrant B3,570,083616,617
Events in quadrant C5,090,446513,929
Events in quadrant D4,958,202480,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01242
D01242

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01828274
B01465729
C01933460
D01887513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59834808.022731%
B59871762.939703%
C59855409.022556%
D59895609.350476%

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 7017 5986 410 410 5.84% 6.85%
B 7020 5990 50 50 0.71% 0.83%
C 7016 5987 453 453 6.46% 7.57%
D 7023 5991 440 440 6.27% 7.34%

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 1622003 10227.96 636 621 158.5
A 7 221 118062 740.84 636 621 158.5
A 4 3 103943 651.77 636 621 158.5
B 5 172 408069 3013.49 633 610 135.2
B 8 128 174065 1282.84 633 610 135.2
B 0 216 103097 757.97 633 610 135.2
C 1 60 766641 4706.97 595 590 162.7
C 5 10 403453 2475.38 595 590 162.7
C 1 29 380066 2331.67 595 590 162.7
D 2 216 1345538 8031.96 599 577 167.5
D 6 191 282304 1682.44 599 577 167.5
D 1 47 136963 814.48 599 577 167.5

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