ASTROSAT CZTI

Data Quality Report

Orbit 20190525_A05_104T08_9000002954_level2

Creation date: 2025-11-30T23:41:43.070460
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/AS1A05_104T08_9000002954cztM0_level2.fits modeM0/AS1A05_104T08_9000002954cztM0_level2_quad_clean.evt
Size (bytes)334,512,000170,023,680
Size319.0 MB 162.1 MB
Events in quadrant A2,116,654761,282
Events in quadrant B2,054,672765,988
Events in quadrant C1,892,516676,997
Events in quadrant D1,756,932634,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0704030
B0711830
C01151790
D0839290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06840
B06840
C06840
D06840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A335782770.824945%
B335783731.110846%
C33578568316.924772%
D3357812213.636309%

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 40858 33577 0 0 0.00% 0.00%
B 40858 33577 0 0 0.00% 0.00%
C 40858 33557 0 0 0.00% 0.00%
D 40858 33572 0 0 0.00% 0.00%

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 0 29 1983 10.85 550 519 134.9
A 7 110 1835 9.76 550 519 134.9
A 9 19 1587 7.92 550 519 134.9
B 2 9 1646 10.38 543 521 108.4
B 5 128 1421 8.3 543 521 108.4
B 2 8 1390 8.02 543 521 108.4
C 1 80 1416 7.28 498 466 130.4
C 3 202 1413 7.26 498 466 130.4
C 1 81 1369 6.92 498 466 130.4
D 3 14 1316 6.41 501 457 134.0
D 10 189 1312 6.38 501 457 134.0
D 15 46 1294 6.24 501 457 134.0

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