ASTROSAT CZTI

Data Quality Report

Orbit 58176

Creation date: 2026-06-30T09:44:53.607289
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_58176cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58176cztM0_level2_quad_clean.evt
Size (bytes)679,593,60085,746,240
Size648.1 MB 81.8 MB
Events in quadrant A3,005,975661,793
Events in quadrant B13,132,680281,114
Events in quadrant C3,014,526629,036
Events in quadrant D5,489,388563,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135712
B0435732
C0137302
D0207003

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609671.013769%
B6609450268.119231%
C6609620.938115%
D66083955.977603%

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 7669 6610 3 3 0.04% 0.05%
B 7669 6610 3538 3538 46.13% 53.52%
C 7669 6610 2 2 0.03% 0.03%
D 7668 6609 420 420 5.48% 6.35%

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 3 23526 123.51 756 738 184.5
A 3 14 23472 123.22 756 738 184.5
A 6 226 15437 79.67 756 738 184.5
B 10 128 10741642 93426.18 539 520 115.0
B 10 247 150685 1306.13 539 520 115.0
B 0 79 33508 286.93 539 520 115.0
C 12 252 34379 167.75 734 726 200.6
C 6 223 29854 145.2 734 726 200.6
C 14 245 29796 144.91 734 726 200.6
D 12 110 1629282 8164.73 712 682 199.5
D 8 160 413204 2068.11 712 682 199.5
D 7 222 122597 611.2 712 682 199.5

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