ASTROSAT CZTI

Data Quality Report

Orbit 56632

Creation date: 2026-03-17T17:53:02.755009
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_083T06_9000006558_56632cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56632cztM0_level2_quad_clean.evt
Size (bytes)1,150,462,080256,855,680
Size1.1 GB 245.0 MB
Events in quadrant A10,150,8221,647,620
Events in quadrant B9,301,3411,783,355
Events in quadrant C10,479,3081,595,644
Events in quadrant D11,213,3461,467,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436523
B0409053
C0444453
D0463813

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186027474.015697%
B186026273.370605%
C186026233.349102%
D186038664.655163%

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 19812 18607 291 291 1.47% 1.56%
B 19812 18607 141 141 0.71% 0.76%
C 19812 18605 273 273 1.38% 1.47%
D 19813 18608 475 475 2.40% 2.55%

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 6 179 547099 1132.41 1969 1923 481.4
A 10 251 520924 1078.04 1969 1923 481.4
A 3 78 294449 607.62 1969 1923 481.4
B 0 231 329323 778.31 1971 1896 420.7
B 10 247 328600 776.59 1971 1896 420.7
B 8 128 197899 465.91 1971 1896 420.7
C 15 230 1382441 2657.28 1923 1905 519.5
C 1 16 638841 1225.99 1923 1905 519.5
C 12 252 248234 474.14 1923 1905 519.5
D 6 239 1185056 2199.22 1921 1833 538.0
D 2 249 667114 1236.54 1921 1833 538.0
D 7 96 622560 1153.73 1921 1833 538.0

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