ASTROSAT CZTI

Data Quality Report

Orbit 56236

Creation date: 2026-02-19T11:42:05.256747
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_083T04_9000006550_56236cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56236cztM0_level2_quad_clean.evt
Size (bytes)909,221,76089,081,280
Size867.1 MB 85.0 MB
Events in quadrant A13,022,036402,189
Events in quadrant B5,280,695721,803
Events in quadrant C5,878,865546,748
Events in quadrant D8,891,553501,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439390
B0208540
C0228630
D0316482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7540346145.901857%
B75404265.649867%
C7540140118.580902%
D7540165621.962865%

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 7540 7540 3323 3323 44.07% 44.07%
B 7540 7540 265 265 3.51% 3.51%
C 7540 7540 495 495 6.56% 6.56%
D 7540 7540 1606 1606 21.30% 21.30%

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 8 176 5635029 34544.31 644 628 163.1
A 15 32 3845804 23574.63 644 628 163.1
A 7 64 682177 4178.55 644 628 163.1
B 4 171 908883 5539.11 765 739 164.0
B 5 185 396615 2414.6 765 739 164.0
B 10 247 213160 1295.64 765 739 164.0
C 13 3 2472953 13936.17 638 631 177.4
C 12 252 393842 2216.48 638 631 177.4
C 12 254 121624 682.02 638 631 177.4
D 8 129 4705104 24850.19 662 633 189.3
D 11 129 434210 2290.26 662 633 189.3
D 2 249 275145 1450.04 662 633 189.3

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