ASTROSAT CZTI

Data Quality Report

Orbit 59403

Creation date: 2026-09-20T03:13:37.016949
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_033T01_9000006608_59403cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59403cztM0_level2_quad_clean.evt
Size (bytes)604,990,080128,517,120
Size577.0 MB 122.6 MB
Events in quadrant A4,473,581829,335
Events in quadrant B4,838,984915,833
Events in quadrant C4,531,118821,008
Events in quadrant D7,871,215717,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197942
B0205492
C0197832
D0296622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87602502.853881%
B87612983.401438%
C87611501.712133%
D87617909.017235%

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 9555 8762 142 142 1.49% 1.62%
B 9556 8763 105 105 1.10% 1.20%
C 9556 8763 97 97 1.02% 1.11%
D 9556 8763 573 573 6.00% 6.54%

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 10 251 477102 2016.93 977 952 236.1
A 3 245 72093 301.35 977 952 236.1
A 13 248 65462 273.26 977 952 236.1
B 6 255 525795 2486.11 983 944 211.1
B 4 236 109219 512.88 983 944 211.1
B 0 186 108778 510.79 983 944 211.1
C 6 223 335366 1250.77 974 963 267.4
C 4 5 98937 366.45 974 963 267.4
C 14 246 97334 360.46 974 963 267.4
D 12 110 2896511 10970.23 945 905 264.0
D 13 138 1091727 4132.66 945 905 264.0
D 2 31 133244 501.38 945 905 264.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct