ASTROSAT CZTI

Data Quality Report

Orbit 59325

Creation date: 2026-09-14T20:03:45.529881
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_021T06_9000006606_59325cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59325cztM0_level2_quad_clean.evt
Size (bytes)446,186,88099,014,400
Size425.5 MB 94.4 MB
Events in quadrant A3,552,579663,031
Events in quadrant B5,054,347651,897
Events in quadrant C3,268,949632,303
Events in quadrant D4,127,712591,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151591
B0195761
C0145251
D0168351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65882233.384942%
B658885512.978142%
C65881221.851852%
D65871582.398664%

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 7678 6589 147 147 1.91% 2.23%
B 7678 6589 601 601 7.83% 9.12%
C 7678 6589 65 65 0.85% 0.99%
D 7677 6588 127 127 1.65% 1.93%

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 0 464384 2568.57 733 715 180.5
A 7 64 144996 799.27 733 715 180.5
A 15 233 28134 151.89 733 715 180.5
B 4 236 2011642 13763.38 693 670 146.1
B 5 185 56832 384.38 693 670 146.1
B 10 247 53786 363.53 693 670 146.1
C 6 13 133098 684.31 711 703 193.5
C 13 16 100087 513.68 711 703 193.5
C 14 254 98999 508.06 711 703 193.5
D 12 110 748180 3722.15 710 675 200.8
D 5 38 247577 1229.43 710 675 200.8
D 12 2 178915 887.54 710 675 200.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct