ASTROSAT CZTI

Data Quality Report

Orbit 53482

Creation date: 2025-08-17T16:41:01.896660
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_002T06_9000006496_53482cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53482cztM0_level2_quad_clean.evt
Size (bytes)923,281,92073,607,040
Size880.5 MB 70.2 MB
Events in quadrant A10,858,667410,909
Events in quadrant B4,541,485652,687
Events in quadrant C15,132,349143,805
Events in quadrant D3,140,350566,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367481
B0178461
C0494032
D0140701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6513269841.424843%
B65145007.675775%
C6513516779.333640%
D6513871.335790%

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 7528 6513 2534 2534 33.66% 38.91%
B 7529 6514 395 395 5.25% 6.06%
C 7527 6512 5152 5152 68.45% 79.12%
D 7528 6514 55 55 0.73% 0.84%

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 63 5276502 35338.6 603 590 149.3
A 15 174 1464456 9805.12 603 590 149.3
A 4 249 932365 6241.12 603 590 149.3
B 2 249 931317 6312.62 688 666 147.4
B 5 185 285513 1932.12 688 666 147.4
B 10 254 106296 716.49 688 666 147.4
C 7 64 7925209 76860.87 371 367 103.1
C 15 224 2509515 24335.54 371 367 103.1
C 1 241 2354831 22835.3 371 367 103.1
D 3 12 162275 829.9 690 660 194.7
D 2 120 100049 510.36 690 660 194.7
D 5 173 50974 258.36 690 660 194.7

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