ASTROSAT CZTI

Data Quality Report

Orbit 58193

Creation date: 2026-06-30T20:40:14.308532
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_042T02_9000006586_58193cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58193cztM0_level2_quad_clean.evt
Size (bytes)432,832,32098,798,400
Size412.8 MB 94.2 MB
Events in quadrant A3,019,369666,807
Events in quadrant B4,554,617696,935
Events in quadrant C3,360,923620,571
Events in quadrant D4,590,875562,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132502
B0177942
C0144302
D0179422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6381911.426109%
B63813425.359661%
C63812013.149976%
D63814296.723084%

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 7566 6382 3 3 0.04% 0.05%
B 7566 6382 135 135 1.78% 2.12%
C 7566 6382 133 133 1.76% 2.08%
D 7566 6382 322 322 4.26% 5.05%

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 12 114 24959 130.01 758 739 186.3
A 6 226 21056 109.06 758 739 186.3
A 4 3 20610 106.66 758 739 186.3
B 10 128 635224 4048.73 730 703 156.7
B 2 249 618070 3939.28 730 703 156.7
B 0 79 140678 893.15 730 703 156.7
C 13 16 407102 2061.04 723 714 197.2
C 6 223 52190 261.06 723 714 197.2
C 12 252 35048 174.13 723 714 197.2
D 8 160 1044869 5188.37 710 675 201.3
D 7 222 170981 846.21 710 675 201.3
D 8 240 145655 720.37 710 675 201.3

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