ASTROSAT CZTI

Data Quality Report

Orbit 56754

Creation date: 2026-03-25T20:56:36.412099
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_083T05_9000006560_56754cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56754cztM0_level2_quad_clean.evt
Size (bytes)433,725,12095,662,080
Size413.6 MB 91.2 MB
Events in quadrant A3,884,340629,723
Events in quadrant B4,815,230668,245
Events in quadrant C3,316,467593,522
Events in quadrant D3,539,087556,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157201
B0187031
C0145851
D0151191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64301562.426128%
B64303405.287714%
C64311592.472399%
D64312103.265433%

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 7580 6431 88 88 1.16% 1.37%
B 7580 6431 192 192 2.53% 2.99%
C 7581 6431 101 101 1.33% 1.57%
D 7581 6432 165 165 2.18% 2.57%

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 14 673717 3928.83 697 679 171.3
A 10 251 310565 1808.94 697 679 171.3
A 3 62 190616 1108.75 697 679 171.3
B 5 185 855005 5837.84 680 657 146.3
B 4 206 827460 5649.62 680 657 146.3
B 8 128 142504 969.25 680 657 146.3
C 15 215 297504 1629.94 664 657 182.1
C 9 38 119873 654.59 664 657 182.1
C 6 223 103842 566.57 664 657 182.1
D 2 249 492049 2588.8 664 632 189.8
D 8 240 180389 946.96 664 632 189.8
D 5 173 53414 278.05 664 632 189.8

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