ASTROSAT CZTI

Data Quality Report

Orbit 58826

Creation date: 2026-08-12T13:51:10.715385
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_106T01_9000006596_58826cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58826cztM0_level2_quad_clean.evt
Size (bytes)1,616,947,200259,174,080
Size1.5 GB 247.2 MB
Events in quadrant A10,230,0411,759,673
Events in quadrant B10,713,6161,885,984
Events in quadrant C14,022,4581,551,064
Events in quadrant D23,412,2351,333,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438683
B0450653
C0551633
D0827903

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191075412.831423%
B191075702.983200%
C1910717879.352593%
D19107335517.559010%

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 20227 19111 350 350 1.73% 1.83%
B 20227 19111 225 225 1.11% 1.18%
C 20227 19111 1484 1484 7.34% 7.77%
D 20227 19111 3100 3100 15.33% 16.22%

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 15 233 1119431 2163.06 2091 2035 516.6
A 10 251 347694 669.13 2091 2035 516.6
A 13 248 224456 430.56 2091 2035 516.6
B 4 171 488716 1096.35 2073 1994 443.9
B 5 185 456386 1023.53 2073 1994 443.9
B 4 236 300574 672.56 2073 1994 443.9
C 15 164 4088780 7580.47 1973 1957 539.1
C 13 3 1027815 1902.82 1973 1957 539.1
C 14 254 283135 521.54 1973 1957 539.1
D 12 110 14954121 27388.41 1923 1841 545.9
D 12 248 192961 350.08 1923 1841 545.9
D 5 32 180230 326.76 1923 1841 545.9

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