ASTROSAT CZTI

Data Quality Report

Orbit 57756

Creation date: 2026-06-01T07:12:05.803951
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_083T16_9000006580_57756cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57756cztM0_level2_quad_clean.evt
Size (bytes)433,117,44095,869,440
Size413.1 MB 91.4 MB
Events in quadrant A3,438,632629,508
Events in quadrant B4,138,201663,645
Events in quadrant C4,796,698595,649
Events in quadrant D3,165,783571,668

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144962
B0165982
C0186322
D0139222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63431602.522466%
B63433415.376005%
C63432433.830995%
D6343370.583320%

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 7593 6344 111 111 1.46% 1.75%
B 7593 6344 159 159 2.09% 2.51%
C 7593 6344 220 220 2.90% 3.47%
D 7593 6344 27 27 0.36% 0.43%

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 13 248 499057 2963.85 674 657 168.2
A 3 128 200339 1187.46 674 657 168.2
A 3 61 55219 324.47 674 657 168.2
B 10 16 523800 3735.23 668 645 140.1
B 5 185 346895 2472.16 668 645 140.1
B 4 158 200016 1423.47 668 645 140.1
C 15 224 1168265 6514.59 657 651 179.2
C 9 38 764390 4261.21 657 651 179.2
C 14 254 163483 908.51 657 651 179.2
D 3 12 153704 820.35 656 625 186.6
D 2 31 82295 437.67 656 625 186.6
D 8 240 72761 386.57 656 625 186.6

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