ASTROSAT CZTI

Data Quality Report

Orbit 58670

Creation date: 2026-08-02T12:14:19.219011
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_004T06_9000006594_58670cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58670cztM0_level2_quad_clean.evt
Size (bytes)601,228,80091,422,720
Size573.4 MB 87.2 MB
Events in quadrant A3,327,129650,759
Events in quadrant B3,828,481684,088
Events in quadrant C3,558,240621,059
Events in quadrant D11,033,820356,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145111
B0159491
C0151541
D0372551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65341221.867156%
B65352513.840857%
C65351492.280031%
D6535291844.651875%

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 7584 6534 45 45 0.59% 0.69%
B 7584 6534 97 97 1.28% 1.48%
C 7585 6535 84 84 1.11% 1.29%
D 7585 6535 2934 2934 38.68% 44.90%

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 123425 671.3 738 719 182.8
A 12 114 89452 485.44 738 719 182.8
A 4 249 88551 480.51 738 719 182.8
B 5 185 657295 4265.44 717 689 153.9
B 0 171 114530 739.53 717 689 153.9
B 8 234 107687 695.08 717 689 153.9
C 12 249 290667 1485.88 711 703 195.1
C 14 254 138090 704.02 711 703 195.1
C 15 147 130199 663.59 711 703 195.1
D 2 249 6673344 40579.88 577 552 164.4
D 8 240 994014 6041.63 577 552 164.4
D 8 160 965656 5869.18 577 552 164.4

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