ASTROSAT CZTI

Data Quality Report

Orbit 58238

Creation date: 2026-07-03T17:36:53.201054
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_044T03_9000006588_58238cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58238cztM0_level2_quad_clean.evt
Size (bytes)642,767,04088,966,080
Size613.0 MB 84.8 MB
Events in quadrant A4,086,415634,687
Events in quadrant B8,342,651490,079
Events in quadrant C3,153,044614,996
Events in quadrant D7,699,726494,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166992
B0293801
C0142421
D0274181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65902553.869499%
B6591221533.606433%
C65911141.729631%
D6591119718.161129%

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 7575 6591 107 107 1.41% 1.62%
B 7576 6592 1328 1328 17.53% 20.15%
C 7576 6592 40 40 0.53% 0.61%
D 7576 6592 1064 1064 14.04% 16.14%

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 4 238 548222 2981.57 738 717 183.6
A 0 24 497444 2705.04 738 717 183.6
A 13 248 56018 301.15 738 717 183.6
B 6 255 3185635 24383.42 618 596 130.6
B 2 249 795394 6084.66 618 596 130.6
B 10 128 603389 4614.75 618 596 130.6
C 6 223 86918 436.36 718 710 197.6
C 12 249 69512 348.26 718 710 197.6
C 8 208 60974 305.04 718 710 197.6
D 12 110 3125356 16170.21 679 648 193.2
D 8 160 640282 3310.07 679 648 193.2
D 6 239 413459 2136.28 679 648 193.2

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