ASTROSAT CZTI

Data Quality Report

Orbit 47764

Creation date: 2024-07-28T14:40:44.144442
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_004T04_9000006346_47764cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47764cztM0_level2_quad_clean.evt
Size (bytes)457,303,680108,167,040
Size436.1 MB 103.2 MB
Events in quadrant A6,780,319712,797
Events in quadrant B3,619,831741,858
Events in quadrant C3,052,805708,682
Events in quadrant D2,975,850663,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248852
B0152052
C0137902
D0135652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64302804.354588%
B64301482.301711%
C64301131.757387%
D6430450.699844%

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 7590 6431 79 79 1.04% 1.23%
B 7590 6431 42 42 0.55% 0.65%
C 7590 6431 55 55 0.72% 0.86%
D 7590 6431 13 13 0.17% 0.20%

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 3928268 26247.45 723 708 149.6
A 14 248 26061 169.43 723 708 149.6
A 13 248 15630 99.72 723 708 149.6
B 0 186 394834 2813.91 725 703 140.1
B 5 255 233841 1664.49 725 703 140.1
B 0 200 102193 724.59 725 703 140.1
C 12 2 259287 1560.09 707 711 165.7
C 14 254 30179 177.79 707 711 165.7
C 13 61 4891 25.22 707 711 165.7
D 7 67 70876 398.74 712 690 176.0
D 5 171 52112 292.13 712 690 176.0
D 8 176 32914 183.07 712 690 176.0

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