ASTROSAT CZTI

Data Quality Report

Orbit 46023

Creation date: 2024-06-27T23:18:51.341675
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_033T02_9000006154_46023cztM0_level2.fits modeM0/AS1A13_033T02_9000006154_46023cztM0_level2_quad_clean.evt
Size (bytes)656,415,360105,589,440
Size626.0 MB 100.7 MB
Events in quadrant A5,892,576727,831
Events in quadrant B10,489,240578,982
Events in quadrant C3,724,067753,807
Events in quadrant D3,690,152684,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219013
B0356692
C0153182
D0153412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64872924.501310%
B6487230535.532604%
C64881342.065351%
D64881392.142417%

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 8722 6489 37 37 0.42% 0.57%
B 8722 6487 1685 1685 19.32% 25.98%
C 8723 6489 110 110 1.26% 1.70%
D 8723 6488 98 98 1.12% 1.51%

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 2912916 18512.28 759 742 157.3
A 0 247 21398 131.31 759 742 157.3
A 13 254 11280 66.99 759 742 157.3
B 3 112 7627353 54944.66 704 682 138.8
B 4 171 58144 413.97 704 682 138.8
B 12 111 16981 117.42 704 682 138.8
C 12 250 612361 3412.83 766 772 179.2
C 14 254 82551 456.35 766 772 179.2
C 12 2 37443 204.63 766 772 179.2
D 2 249 326131 1728.57 759 739 188.2
D 1 52 243892 1291.7 759 739 188.2
D 7 204 105965 558.99 759 739 188.2

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