ASTROSAT CZTI

Data Quality Report

Orbit 55447

Creation date: 2025-12-27T23:52:16.569606
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_099T01_9000006536_55447cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55447cztM0_level2_quad_clean.evt
Size (bytes)371,871,36092,802,240
Size354.6 MB 88.5 MB
Events in quadrant A3,017,265616,097
Events in quadrant B2,941,400653,353
Events in quadrant C2,786,720581,029
Events in quadrant D4,537,667527,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135591
B0134011
C0131251
D0178841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61931181.905377%
B61931292.082997%
C6194711.146271%
D61944146.683888%

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 7308 6194 35 35 0.48% 0.57%
B 7308 6194 45 45 0.62% 0.73%
C 7309 6195 29 29 0.40% 0.47%
D 7308 6194 331 331 4.53% 5.34%

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 78 174362 1049.55 668 652 165.5
A 0 8 130209 782.78 668 652 165.5
A 4 159 71583 428.56 668 652 165.5
B 12 32 135561 966.34 653 629 139.6
B 5 185 77861 553.11 653 629 139.6
B 10 247 31141 218.52 653 629 139.6
C 13 3 195031 1080.94 651 644 179.8
C 9 38 23716 128.3 651 644 179.8
C 12 252 10538 55.02 651 644 179.8
D 2 62 751258 4210.35 631 605 178.3
D 6 239 332409 1861.06 631 605 178.3
D 11 129 245285 1372.39 631 605 178.3

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