ASTROSAT CZTI

Data Quality Report

Orbit 49766

Creation date: 2024-12-12T13:55:21.473632
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/AS1A13_037T01_9000006440_49766cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49766cztM0_level2_quad_clean.evt
Size (bytes)1,046,456,64047,180,160
Size998.0 MB 45.0 MB
Events in quadrant A13,721,040330,740
Events in quadrant B4,204,328591,873
Events in quadrant C9,105,99969,435
Events in quadrant D11,264,54132,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0446100
B0164110
C0310180
D0373870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5672523592.295487%
B567262711.054302%
C5673549696.879958%
D56735673100.000000%

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 6773 5674 5268 5268 77.78% 92.84%
B 6772 5672 418 418 6.17% 7.37%
C 6773 5673 1486 1486 21.94% 26.19%
D 6773 5674 3003 3003 44.34% 52.93%

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 5362493 51824.82 378 366 103.5
A 7 64 2541686 24561.79 378 366 103.5
A 6 250 1201173 11605.77 378 366 103.5
B 5 172 893045 6884.39 606 589 129.6
B 10 28 438760 3380.04 606 589 129.6
B 4 206 91673 702.62 606 589 129.6
C 15 180 1980025 58673.39 90 88 33.7
C 15 190 1965569 58245.0 90 88 33.7
C 15 163 1201101 35590.78 90 88 33.7
D 15 142 7145873 282468.39 54 51 25.3
D 7 61 1760899 69604.86 54 51 25.3
D 15 40 501189 19809.57 54 51 25.3

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