ASTROSAT CZTI

Data Quality Report

Orbit 48227

Creation date: 2024-08-30T11:12:55.610689
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/AS1C09_008T01_9000006420_48227cztM0_level2.fits modeM0/AS1C09_008T01_9000006420_48227cztM0_level2_quad_clean.evt
Size (bytes)478,958,400103,446,720
Size456.8 MB 98.7 MB
Events in quadrant A6,823,315677,656
Events in quadrant B3,581,191705,567
Events in quadrant C2,809,206690,636
Events in quadrant D4,025,451616,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253081
B0147691
C0129561
D0163161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63212694.255656%
B63221302.056311%
C6322390.616893%
D63222544.017716%

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 7406 6321 34 34 0.46% 0.54%
B 7407 6322 44 44 0.59% 0.70%
C 7407 6322 6 6 0.08% 0.09%
D 7407 6322 210 210 2.84% 3.32%

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 3986987 27193.99 704 688 146.6
A 13 248 79556 538.03 704 688 146.6
A 3 14 17739 116.32 704 688 146.6
B 4 21 286973 2073.16 704 683 138.1
B 0 200 253867 1833.42 704 683 138.1
B 5 255 122003 878.53 704 683 138.1
C 12 249 24126 142.55 701 704 164.3
C 12 2 20390 119.81 701 704 164.3
C 0 207 19409 113.84 701 704 164.3
D 12 221 510808 2900.87 698 676 175.9
D 2 165 348685 1978.96 698 676 175.9
D 4 222 187460 1062.15 698 676 175.9

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