ASTROSAT CZTI

Data Quality Report

Orbit 57434

Creation date: 2026-05-10T15:06:13.368147
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_102T01_9000006572_57434cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57434cztM0_level2_quad_clean.evt
Size (bytes)414,478,08096,678,720
Size395.3 MB 92.2 MB
Events in quadrant A3,259,628632,683
Events in quadrant B3,319,498678,848
Events in quadrant C4,356,608595,540
Events in quadrant D3,890,792557,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145111
B0144951
C0176711
D0162831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66281311.976463%
B66291301.961080%
C66292824.254035%
D66293174.782018%

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 7558 6628 58 58 0.77% 0.88%
B 7559 6629 34 34 0.45% 0.51%
C 7559 6629 171 171 2.26% 2.58%
D 7559 6629 250 250 3.31% 3.77%

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 10 251 262091 1485.61 722 705 175.9
A 7 64 99345 560.63 722 705 175.9
A 3 14 53921 302.46 722 705 175.9
B 10 247 184345 1214.55 710 684 151.2
B 0 63 74368 487.27 710 684 151.2
B 8 128 64481 421.89 710 684 151.2
C 15 224 977135 5124.56 699 695 190.5
C 13 3 228720 1196.72 699 695 190.5
C 14 254 117808 614.63 699 695 190.5
D 8 240 534332 2713.45 697 663 196.7
D 15 142 349275 1772.53 697 663 196.7
D 7 96 74495 375.4 697 663 196.7

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