ASTROSAT CZTI

Data Quality Report

Orbit 54042

Creation date: 2025-09-24T17:31:37.480384
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_041T01_9000006510_54042cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54042cztM0_level2_quad_clean.evt
Size (bytes)800,507,520105,048,000
Size763.4 MB 100.2 MB
Events in quadrant A4,985,838750,532
Events in quadrant B4,368,793837,892
Events in quadrant C5,367,894714,174
Events in quadrant D14,262,649298,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210670
B0192590
C0223040
D0483230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83303804.561825%
B83312132.556716%
C83315176.205738%
D8331474957.003961%

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 8330 8330 314 314 3.77% 3.77%
B 8331 8331 88 88 1.06% 1.06%
C 8331 8331 387 387 4.65% 4.65%
D 8331 8331 4170 4170 50.05% 50.05%

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 15 174 825418 3901.77 855 831 211.3
A 0 8 470783 2223.71 855 831 211.3
A 13 248 164899 776.33 855 831 211.3
B 5 236 266072 1440.5 873 843 184.1
B 5 185 254626 1378.34 873 843 184.1
B 7 252 141633 764.65 873 843 184.1
C 15 158 836674 3564.54 848 837 234.5
C 13 3 475583 2024.62 848 837 234.5
C 15 147 184793 784.51 848 837 234.5
D 8 176 11514805 79859.44 505 483 144.2
D 3 12 238575 1651.33 505 483 144.2
D 10 172 224466 1553.47 505 483 144.2

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