ASTROSAT CZTI

Data Quality Report

Orbit 58928

Creation date: 2026-08-19T05:07:22.792852
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_004T07_9000006598_58928cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58928cztM0_level2_quad_clean.evt
Size (bytes)1,707,733,440247,069,440
Size1.6 GB 235.6 MB
Events in quadrant A16,663,9431,553,905
Events in quadrant B11,341,2221,807,041
Events in quadrant C11,558,2431,666,644
Events in quadrant D22,211,8751,168,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0625643
B0468413
C0475513
D0789203

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18630246113.209877%
B186319725.217111%
C186316443.456605%
D18631484826.021148%

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 20000 18631 1935 1935 9.68% 10.39%
B 20001 18634 504 504 2.52% 2.70%
C 20001 18634 520 520 2.60% 2.79%
D 20001 18634 4426 4426 22.13% 23.75%

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 14 238 7909020 16434.5 1940 1892 481.1
A 0 24 423139 875.54 1940 1892 481.1
A 3 14 313420 647.49 1940 1892 481.1
B 4 171 1471125 3479.1 1972 1891 422.3
B 4 236 904494 2137.33 1972 1891 422.3
B 5 172 271527 638.49 1972 1891 422.3
C 12 252 1948640 3604.9 1966 1944 540.0
C 4 5 702447 1297.2 1966 1944 540.0
C 15 208 303131 557.74 1966 1944 540.0
D 12 110 12588732 25150.66 1777 1695 500.5
D 11 129 1531557 3056.88 1777 1695 500.5
D 7 222 329059 654.12 1777 1695 500.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct