ASTROSAT CZTI

Data Quality Report

Orbit 18052

Creation date: 2024-06-27T17:44:25.488986
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/AS1A06_003T04_9000002682_18052cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18052cztM0_level2_quad_clean.evt
Size (bytes)506,494,08092,856,960
Size483.0 MB 88.6 MB
Events in quadrant A3,159,956604,229
Events in quadrant B3,470,146603,340
Events in quadrant C3,183,749575,915
Events in quadrant D5,072,735563,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137652
B0145732
C0137292
D0196643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6673370.554473%
B66731001.498576%
C6673650.974075%
D66723505.245803%

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 7563 6674 2 2 0.03% 0.03%
B 7563 6674 48 48 0.63% 0.72%
C 7563 6674 1 1 0.01% 0.01%
D 7562 6673 221 221 2.92% 3.31%

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 15 174 13778 79.04 814 797 164.2
A 5 98 8080 44.34 814 797 164.2
A 0 226 6971 37.59 814 797 164.2
B 3 64 130829 850.58 808 788 152.9
B 7 220 75631 489.54 808 788 152.9
B 0 197 41653 267.29 808 788 152.9
C 14 238 122220 665.76 780 786 182.4
C 0 207 7475 36.67 780 786 182.4
C 13 61 5467 25.66 780 786 182.4
D 11 176 889971 4657.92 782 759 190.9
D 1 52 767980 4018.9 782 759 190.9
D 7 238 284122 1484.33 782 759 190.9

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