ASTROSAT CZTI

Data Quality Report

Orbit 55669

Creation date: 2026-01-12T12:49:45.199259
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_021T06_9000006538_55669cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55669cztM0_level2_quad_clean.evt
Size (bytes)512,369,280101,335,680
Size488.6 MB 96.6 MB
Events in quadrant A6,256,727635,351
Events in quadrant B3,010,749722,495
Events in quadrant C3,445,710627,933
Events in quadrant D5,680,148568,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238007
B0149000
C0160420
D0220010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73765557.524403%
B737680.108460%
C7377730.989562%
D73775106.913379%

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 7376 7376 518 518 7.02% 7.02%
B 7376 7376 2 2 0.03% 0.03%
C 7377 7377 61 61 0.83% 0.83%
D 7377 7377 497 497 6.74% 6.74%

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 7 64 1422989 7952.73 720 700 178.8
A 12 115 1244898 6956.93 720 700 178.8
A 0 8 356138 1987.43 720 700 178.8
B 7 252 40682 255.02 733 707 156.8
B 12 111 18697 114.77 733 707 156.8
B 10 247 18502 113.52 733 707 156.8
C 10 19 229093 1180.71 713 704 193.4
C 6 223 133778 687.95 713 704 193.4
C 9 38 81556 417.98 713 704 193.4
D 11 129 1433380 7202.64 700 666 198.9
D 8 245 961729 4831.52 700 666 198.9
D 7 70 145513 728.18 700 666 198.9

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