ASTROSAT CZTI

Data Quality Report

Orbit 54885

Creation date: 2025-11-20T04:04:31.913752
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/AS1A14_039T06_9000006526_54885cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54885cztM0_level2_quad_clean.evt
Size (bytes)609,595,200127,327,680
Size581.4 MB 121.4 MB
Events in quadrant A4,439,195848,284
Events in quadrant B4,932,718888,590
Events in quadrant C5,740,892780,696
Events in quadrant D6,764,041721,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196434
B0212094
C0234655
D0265490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8875300.338028%
B88752572.895775%
C88743624.079333%
D88775906.646390%

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 8877 8876 9 9 0.10% 0.10%
B 8878 8877 161 161 1.81% 1.81%
C 8877 8876 318 318 3.58% 3.58%
D 8877 8877 438 438 4.93% 4.93%

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 3 14 521559 2152.79 980 954 241.8
A 0 8 43882 177.51 980 954 241.8
A 13 254 25560 101.75 980 954 241.8
B 10 247 448806 2178.69 956 921 205.6
B 5 185 310233 1504.62 956 921 205.6
B 2 249 172777 835.98 956 921 205.6
C 4 5 613507 2403.71 938 931 254.8
C 15 147 481632 1886.24 938 931 254.8
C 12 252 467586 1831.12 938 931 254.8
D 15 58 495088 1876.64 924 884 263.3
D 6 239 491495 1863.0 924 884 263.3
D 10 181 481420 1824.74 924 884 263.3

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