ASTROSAT CZTI

Data Quality Report

Orbit 57470

Creation date: 2026-05-13T02:03:22.489511
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_113T09_9000006574_57470cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57470cztM0_level2_quad_clean.evt
Size (bytes)557,614,08098,637,120
Size531.8 MB 94.1 MB
Events in quadrant A3,473,213661,058
Events in quadrant B5,335,937669,705
Events in quadrant C6,943,595536,020
Events in quadrant D4,287,861581,818

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161492
B0213234
C0259692
D0182202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7732811.047594%
B77327459.635282%
C77327489.674082%
D77321702.198655%

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 8021 8007 3 3 0.04% 0.04%
B 8021 8006 323 323 4.03% 4.03%
C 8021 7947 591 591 7.37% 7.44%
D 8021 8007 121 121 1.51% 1.51%

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 12 77156 363.13 859 837 210.2
A 13 153 28599 132.09 859 837 210.2
A 3 14 17192 77.82 859 837 210.2
B 4 206 1464002 8347.06 814 779 175.3
B 0 63 101885 576.76 814 779 175.3
B 5 172 99255 561.76 814 779 175.3
C 15 224 1737553 8074.01 794 785 215.1
C 12 254 1468149 6821.59 794 785 215.1
C 14 254 400937 1860.25 794 785 215.1
D 7 96 277755 1210.9 821 784 228.7
D 8 240 203538 886.43 821 784 228.7
D 15 142 125367 544.67 821 784 228.7

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