ASTROSAT CZTI

Data Quality Report

Orbit 59120

Creation date: 2026-09-01T01:10:56.453864
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_004T02_9000006600_59120cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59120cztM0_level2_quad_clean.evt
Size (bytes)822,067,20068,578,560
Size784.0 MB 65.4 MB
Events in quadrant A6,145,991479,464
Events in quadrant B3,060,284628,631
Events in quadrant C6,527,218526,915
Events in quadrant D14,224,56616,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225511
B0134751
C0236591
D0464772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6085125920.690222%
B6085851.396878%
C60855408.874281%
D6084592797.419461%

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 7115 6086 1156 1156 16.25% 18.99%
B 7115 6086 34 34 0.48% 0.56%
C 7115 6086 425 425 5.97% 6.98%
D 7113 6083 4571 4571 64.26% 75.14%

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 3 14 2317397 15500.62 604 588 149.5
A 15 248 587987 3929.99 604 588 149.5
A 13 248 420406 2808.79 604 588 149.5
B 4 236 155806 1120.64 650 625 138.5
B 10 128 63847 456.56 650 625 138.5
B 4 171 47390 337.71 650 625 138.5
C 3 233 3034262 17729.6 622 616 171.1
C 5 250 481746 2811.88 622 616 171.1
C 12 252 146048 849.95 622 616 171.1
D 12 1 12233350 380136.04 107 102 32.2
D 12 110 1395744 43368.19 107 102 32.2
D 11 129 85011 2638.46 107 102 32.2

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