ASTROSAT CZTI

Data Quality Report

Orbit 54601

Creation date: 2025-11-01T00:32:44.304454
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_066T07_9000006522_54601cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54601cztM0_level2_quad_clean.evt
Size (bytes)443,557,44099,475,200
Size423.0 MB 94.9 MB
Events in quadrant A3,962,199654,380
Events in quadrant B3,427,149704,909
Events in quadrant C3,482,158616,473
Events in quadrant D5,035,739577,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159782
B0147872
C0149732
D0196582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65842133.235115%
B6584991.503645%
C65841772.688335%
D65843395.148846%

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 7654 6584 118 118 1.54% 1.79%
B 7654 6584 13 13 0.17% 0.20%
C 7654 6584 90 90 1.18% 1.37%
D 7654 6584 226 226 2.95% 3.43%

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 8 296449 1611.32 744 727 183.5
A 3 14 281461 1529.66 744 727 183.5
A 11 3 185960 1009.29 744 727 183.5
B 5 185 158561 990.1 737 711 159.4
B 0 213 121571 758.08 737 711 159.4
B 10 247 56111 347.49 737 711 159.4
C 15 254 310975 1572.09 723 717 197.4
C 13 3 97505 490.43 723 717 197.4
C 1 16 74436 373.54 723 717 197.4
D 12 33 913662 4404.38 719 686 207.3
D 2 62 524052 2524.82 719 686 207.3
D 3 12 196563 944.95 719 686 207.3

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