ASTROSAT CZTI

Data Quality Report

Orbit 54162

Creation date: 2025-10-03T10:51:53.273247
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_012T01_9000006512_54162cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54162cztM0_level2_quad_clean.evt
Size (bytes)1,454,837,760266,616,000
Size1.4 GB 254.3 MB
Events in quadrant A12,010,4071,737,145
Events in quadrant B16,173,3041,731,622
Events in quadrant C9,413,9191,761,686
Events in quadrant D14,723,2911,476,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499553
B0621743
C0431203
D0579443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198039234.660910%
B19803241112.174923%
C198031660.838257%
D1980315337.741251%

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 21323 19806 673 673 3.16% 3.40%
B 21323 19806 1395 1395 6.54% 7.04%
C 21323 19806 119 119 0.56% 0.60%
D 21323 19806 1357 1357 6.36% 6.85%

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 7 29 1297427 2564.94 2048 1997 505.1
A 15 174 1055541 2086.01 2048 1997 505.1
A 0 8 520790 1027.21 2048 1997 505.1
B 6 255 5628927 13479.36 1971 1900 417.5
B 1 255 550058 1313.09 1971 1900 417.5
B 5 236 511682 1221.17 1971 1900 417.5
C 14 254 393874 701.14 2034 2013 558.9
C 0 209 185524 328.35 2034 2013 558.9
C 4 5 157095 277.48 2034 2013 558.9
D 8 176 3172439 5661.62 1957 1868 560.0
D 10 181 1464319 2611.47 1957 1868 560.0
D 3 12 537278 956.07 1957 1868 560.0

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