ASTROSAT CZTI

Data Quality Report

Orbit 58459

Creation date: 2026-07-18T15:11:40.424614
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_044T04_9000006592_58459cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58459cztM0_level2_quad_clean.evt
Size (bytes)686,088,000105,197,760
Size654.3 MB 100.3 MB
Events in quadrant A3,568,863743,045
Events in quadrant B10,780,721571,306
Events in quadrant C4,043,719703,594
Events in quadrant D6,393,384620,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163500
B0374560
C0177220
D0244140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7862310.394302%
B7861252832.158758%
C78611622.060807%
D78627369.361486%

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 7862 7862 10 10 0.13% 0.13%
B 7861 7861 2098 2098 26.69% 26.69%
C 7861 7861 108 108 1.37% 1.37%
D 7862 7862 657 657 8.36% 8.36%

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 10 17 73026 333.2 868 847 216.6
A 12 80 49541 224.79 868 847 216.6
A 9 255 18687 82.36 868 847 216.6
B 2 249 6439212 41459.06 724 697 155.3
B 5 172 569203 3660.74 724 697 155.3
B 8 128 553467 3559.41 724 697 155.3
C 6 13 390934 1706.02 837 830 228.7
C 1 12 129223 561.49 837 830 228.7
C 14 245 61074 263.46 837 830 228.7
D 8 240 2788496 12256.09 803 769 227.5
D 2 31 107605 469.7 803 769 227.5
D 11 129 101395 442.4 803 769 227.5

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