ASTROSAT CZTI

Data Quality Report

Orbit 54746

Creation date: 2025-11-11T22:03:34.495311
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_103T01_9000006524_54746cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54746cztM0_level2_quad_clean.evt
Size (bytes)1,168,067,520225,374,400
Size1.1 GB 214.9 MB
Events in quadrant A8,480,2331,483,647
Events in quadrant B13,508,9561,486,643
Events in quadrant C7,638,8721,439,238
Events in quadrant D12,344,4741,287,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367845
B0511703
C0354793
D0482183

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163503071.877676%
B1635015189.284404%
C163512261.382178%
D1635111236.868081%

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 18881 16351 145 145 0.77% 0.89%
B 18881 16351 1211 1211 6.41% 7.41%
C 18882 16353 126 126 0.67% 0.77%
D 18882 16351 1030 1030 5.45% 6.30%

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 12 115 931139 2207.75 1709 1670 421.0
A 3 14 579785 1373.19 1709 1670 421.0
A 4 206 119910 280.85 1709 1670 421.0
B 2 249 4959498 14295.39 1619 1562 346.8
B 7 0 602857 1733.73 1619 1562 346.8
B 0 173 390886 1122.55 1619 1562 346.8
C 13 3 447915 971.58 1668 1651 459.3
C 6 223 210850 455.46 1668 1651 459.3
C 4 5 119733 257.08 1668 1651 459.3
D 11 129 4798539 10294.67 1637 1564 466.0
D 3 12 259094 552.68 1637 1564 466.0
D 15 94 181631 386.44 1637 1564 466.0

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