ASTROSAT CZTI

Data Quality Report

Orbit 55043

Creation date: 2025-12-01T19:17:49.798076
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_025T01_9000006530_55043cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55043cztM0_level2_quad_clean.evt
Size (bytes)647,775,360103,596,480
Size617.8 MB 98.8 MB
Events in quadrant A3,730,909723,487
Events in quadrant B3,516,898787,587
Events in quadrant C3,688,815692,419
Events in quadrant D12,446,022399,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01694764
B01619059
C01680932
D042596369

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7671901.173250%
B7673420.547374%
C7685760.988939%
D7640337844.214660%

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 7700 7700 58 58 0.75% 0.75%
B 7700 7700 5 5 0.06% 0.06%
C 7701 7701 50 50 0.65% 0.65%
D 7701 7687 2669 2669 34.66% 34.72%

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 394428 1898.85 844 823 207.3
A 13 254 20435 94.61 844 823 207.3
A 4 3 16434 75.31 844 823 207.3
B 5 185 49814 270.27 837 807 181.3
B 0 182 49374 267.84 837 807 181.3
B 10 247 32044 172.27 837 807 181.3
C 13 3 277864 1235.85 823 813 224.2
C 12 252 99195 438.85 823 813 224.2
C 6 223 45057 197.36 823 813 224.2
D 11 129 7929450 44097.32 632 605 179.8
D 15 94 1150985 6397.99 632 605 179.8
D 10 181 247685 1374.17 632 605 179.8

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