ASTROSAT CZTI

Data Quality Report

Orbit 40327

Creation date: 2024-06-27T22:14:57.411598
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/AS1A12_056T02_9000005538_40327cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40327cztM0_level2_quad_clean.evt
Size (bytes)1,928,321,280381,375,360
Size1.8 GB 363.7 MB
Events in quadrant A14,549,2952,679,065
Events in quadrant B12,184,4602,769,428
Events in quadrant C11,979,2342,673,092
Events in quadrant D30,835,5911,793,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0572926
B0514165
C0497765
D01078715

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A237095072.138428%
B237092130.898393%
C237091940.818255%
D23709612425.829854%

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 31295 23714 427 427 1.36% 1.80%
B 31295 23714 151 151 0.48% 0.64%
C 31295 23714 175 175 0.56% 0.74%
D 31295 23714 5924 5924 18.93% 24.98%

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 1815349 3353.99 2676 2628 540.5
A 13 248 1792363 3311.47 2676 2628 540.5
A 12 189 220112 402.4 2676 2628 540.5
B 5 255 541586 1063.15 2667 2596 507.0
B 7 202 264031 515.68 2667 2596 507.0
B 4 170 237856 464.05 2667 2596 507.0
C 15 214 1029262 1679.26 2625 2641 611.4
C 14 254 685679 1117.25 2625 2641 611.4
C 12 249 17979 25.09 2625 2641 611.4
D 12 227 18066011 31766.2 2312 2243 568.6
D 12 79 1293892 2271.44 2312 2243 568.6
D 1 47 1032740 1812.19 2312 2243 568.6

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