ASTROSAT CZTI

Data Quality Report

Orbit 37669

Creation date: 2024-06-27T21:42:54.713738
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/AS1A11_075T01_9000005342_37669cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37669cztM0_level2_quad_clean.evt
Size (bytes)373,152,96070,643,520
Size355.9 MB 67.4 MB
Events in quadrant A2,848,444428,629
Events in quadrant B2,678,959445,398
Events in quadrant C2,786,724449,893
Events in quadrant D2,612,371430,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120663
B0116932
C0116232
D0118312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549980.145481%
B5499140.254592%
C5499350.636479%
D5499390.709220%

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 7111 5500 6 6 0.08% 0.11%
B 7110 5498 2 2 0.03% 0.04%
C 7110 5498 31 31 0.44% 0.56%
D 7110 5498 25 25 0.35% 0.45%

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 10 83 317521 2577.28 609 599 123.0
A 6 10 83888 677.32 609 599 123.0
A 7 3 27965 222.55 609 599 123.0
B 0 230 65770 551.31 612 596 118.2
B 5 250 44594 372.18 612 596 118.2
B 5 200 37244 310.01 612 596 118.2
C 15 214 253692 1819.58 601 604 139.1
C 0 10 118633 848.57 601 604 139.1
C 14 254 49006 347.99 601 604 139.1
D 2 249 66121 461.24 593 577 142.1
D 13 249 53046 369.23 593 577 142.1
D 2 153 47332 329.02 593 577 142.1

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