ASTROSAT CZTI

Data Quality Report

Orbit 57580

Creation date: 2026-05-20T11:55:13.940874
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_070T08_9000006576_57580cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57580cztM0_level2_quad_clean.evt
Size (bytes)447,333,12082,486,080
Size426.6 MB 78.7 MB
Events in quadrant A2,537,357576,363
Events in quadrant B2,812,489611,680
Events in quadrant C5,943,479431,848
Events in quadrant D4,808,539468,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119661
B0126501
C0217451
D0183151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5864420.716235%
B58641322.251023%
C5865137423.427110%
D586564911.065644%

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 6929 5865 1 1 0.01% 0.02%
B 6930 5866 71 71 1.02% 1.21%
C 6930 5865 852 852 12.29% 14.53%
D 6930 5866 591 591 8.53% 10.08%

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 3 250 34715 215.38 636 619 158.3
A 3 128 11384 68.0 636 619 158.3
A 3 14 10814 64.4 636 619 158.3
B 2 249 169626 1278.61 623 600 132.2
B 0 171 54390 406.9 623 600 132.2
B 10 247 24299 179.27 623 600 132.2
C 12 254 3046305 20599.36 542 536 147.9
C 15 224 577038 3899.04 542 536 147.9
C 12 252 61034 409.16 542 536 147.9
D 15 142 1938141 11548.23 597 570 167.8
D 11 247 109283 647.95 597 570 167.8
D 2 249 66354 392.08 597 570 167.8

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