ASTROSAT CZTI

Data Quality Report

Orbit 12716

Creation date: 2024-06-27T16:31:29.037979
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/AS1A04_174T01_9000001876_12716cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12716cztM0_level2_quad_clean.evt
Size (bytes)1,018,512,000155,842,560
Size971.3 MB 148.6 MB
Events in quadrant A6,483,747985,838
Events in quadrant B9,989,314895,849
Events in quadrant C6,361,487989,579
Events in quadrant D7,127,151944,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275754
B0380983
C0277153
D0300633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130811791.368397%
B13081160212.246770%
C130811210.925006%
D130813172.423362%

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 14813 13086 28 28 0.19% 0.21%
B 14813 13086 1137 1137 7.68% 8.69%
C 14813 13086 19 19 0.13% 0.15%
D 14813 13086 227 227 1.53% 1.73%

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 15 222 138877 425.3 1588 1557 322.9
A 15 239 92724 282.36 1588 1557 322.9
A 12 189 80377 244.12 1588 1557 322.9
B 4 239 3869926 13360.39 1507 1471 289.5
B 3 64 67747 228.9 1507 1471 289.5
B 11 51 60981 205.53 1507 1471 289.5
C 15 208 320494 888.32 1547 1557 359.0
C 13 61 11088 26.55 1547 1557 359.0
C 14 234 10059 23.68 1547 1557 359.0
D 1 52 766644 2086.1 1520 1484 366.8
D 10 199 523636 1423.57 1520 1484 366.8
D 2 234 44252 116.6 1520 1484 366.8

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