ASTROSAT CZTI

Data Quality Report

Orbit 55969

Creation date: 2026-02-06T02:53:07.034249
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_066T02_9000006546_55969cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55969cztM0_level2_quad_clean.evt
Size (bytes)453,335,04092,344,320
Size432.3 MB 88.1 MB
Events in quadrant A5,955,582554,135
Events in quadrant B4,068,976657,412
Events in quadrant C3,195,827584,012
Events in quadrant D3,068,111558,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220223
B0162832
C0143002
D0137832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633872011.360050%
B63381672.634901%
C6338931.467340%
D6338350.552225%

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 7508 6339 585 585 7.79% 9.23%
B 7508 6339 68 68 0.91% 1.07%
C 7508 6339 79 79 1.05% 1.25%
D 7508 6339 25 25 0.33% 0.39%

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 12 115 1873273 11626.76 645 628 161.1
A 7 64 727866 4515.23 645 628 161.1
A 15 32 396993 2460.93 645 628 161.1
B 2 249 527993 3685.91 671 648 143.1
B 0 229 360073 2512.22 671 648 143.1
B 0 199 140043 974.31 671 648 143.1
C 13 3 225725 1235.83 660 654 182.1
C 12 112 110702 604.26 660 654 182.1
C 12 249 70101 381.32 660 654 182.1
D 2 249 101509 542.37 660 631 186.0
D 11 129 86584 462.12 660 631 186.0
D 14 52 57179 304.03 660 631 186.0

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