ASTROSAT CZTI

Data Quality Report

Orbit 43861

Creation date: 2024-06-27T22:56:39.681407
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_087T01_9000005908_43861cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43861cztM0_level2_quad_clean.evt
Size (bytes)626,423,040102,389,760
Size597.4 MB 97.6 MB
Events in quadrant A3,948,304723,616
Events in quadrant B3,341,591742,375
Events in quadrant C9,861,250587,782
Events in quadrant D5,521,984582,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155352
B0145482
C0339412
D0210242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649500.751993%
B66491091.639344%
C6649152722.965860%
D664979011.881486%

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 7665 6650 11 11 0.14% 0.17%
B 7665 6650 76 76 0.99% 1.14%
C 7664 6648 1512 1512 19.73% 22.74%
D 7665 6650 728 728 9.50% 10.95%

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 1014895 6657.35 736 721 152.3
A 7 3 44993 290.61 736 721 152.3
A 2 79 22071 140.14 736 721 152.3
B 0 183 180812 1241.42 734 711 145.1
B 4 170 123655 847.44 734 711 145.1
B 5 235 92682 633.95 734 711 145.1
C 3 233 5003303 31416.52 676 681 159.2
C 0 239 2102117 13197.04 676 681 159.2
C 14 254 56112 348.11 676 681 159.2
D 13 249 1579885 9204.24 686 667 171.6
D 12 233 446306 2597.34 686 667 171.6
D 2 249 342265 1990.95 686 667 171.6

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