ASTROSAT CZTI

Data Quality Report

Orbit 58210

Creation date: 2026-07-01T20:35:42.474038
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_58210cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58210cztM0_level2_quad_clean.evt
Size (bytes)446,889,60097,390,080
Size426.2 MB 92.9 MB
Events in quadrant A3,029,600649,303
Events in quadrant B5,785,291644,202
Events in quadrant C3,247,828616,032
Events in quadrant D3,956,814570,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140371
B0216471
C0146461
D0162996

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67241031.531826%
B67246169.161214%
C6724761.130280%
D67242083.093397%

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 7439 6724 13 13 0.17% 0.19%
B 7439 6724 415 415 5.58% 6.17%
C 7439 6724 42 42 0.56% 0.62%
D 7438 6723 143 143 1.92% 2.13%

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 13 248 98282 527.79 742 723 184.8
A 4 3 16538 85.56 742 723 184.8
A 13 254 12283 62.54 742 723 184.8
B 10 128 1257696 8388.28 697 671 149.9
B 2 249 697775 4651.86 697 671 149.9
B 4 201 529384 3528.17 697 671 149.9
C 12 252 142665 726.09 711 706 195.5
C 12 250 93469 474.47 711 706 195.5
C 14 254 59375 300.08 711 706 195.5
D 2 31 315283 1563.29 710 680 201.2
D 8 240 250759 1242.67 710 680 201.2
D 8 160 102761 507.25 710 680 201.2

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