ASTROSAT CZTI

Data Quality Report

Orbit 57652

Creation date: 2026-05-25T10:59:30.739932
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_125T09_9000006578_57652cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57652cztM0_level2_quad_clean.evt
Size (bytes)418,579,20096,831,360
Size399.2 MB 92.3 MB
Events in quadrant A2,835,575645,148
Events in quadrant B3,032,670690,574
Events in quadrant C5,384,911572,543
Events in quadrant D3,728,371564,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134622
B0137532
C0207222
D0157692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6591310.470338%
B6591590.895160%
C65915468.284024%
D65911752.655136%

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 7631 6591 2 2 0.03% 0.03%
B 7631 6592 14 14 0.18% 0.21%
C 7631 6592 415 415 5.44% 6.30%
D 7631 6592 130 130 1.70% 1.97%

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 13 24675 135.13 718 699 177.4
A 3 245 10893 57.45 718 699 177.4
A 4 3 10521 55.36 718 699 177.4
B 10 247 57027 373.12 709 682 151.0
B 10 16 35707 231.94 709 682 151.0
B 5 172 33767 219.09 709 682 151.0
C 15 224 2493271 13589.65 674 665 183.4
C 14 254 124178 673.39 674 665 183.4
C 6 223 119493 647.85 674 665 183.4
D 3 12 339194 1753.92 680 648 193.0
D 8 240 276054 1426.81 680 648 193.0
D 8 160 70178 360.22 680 648 193.0

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