ASTROSAT CZTI

Data Quality Report

Orbit 54721

Creation date: 2025-11-11T18:32:53.831812
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_103T01_9000006524_54721cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54721cztM0_level2_quad_clean.evt
Size (bytes)484,050,24094,985,280
Size461.6 MB 90.6 MB
Events in quadrant A3,220,661635,925
Events in quadrant B3,643,222679,990
Events in quadrant C4,966,529573,773
Events in quadrant D5,574,775526,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145362
B0154262
C0195392
D0211792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65961692.562159%
B65952203.335861%
C65955237.930250%
D659566710.113723%

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 7701 6597 93 93 1.21% 1.41%
B 7700 6596 90 90 1.17% 1.36%
C 7700 6596 517 517 6.71% 7.84%
D 7700 6596 495 495 6.43% 7.50%

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 4 249 300274 1687.48 713 693 177.5
A 8 246 45734 253.71 713 693 177.5
A 7 190 38332 212.01 713 693 177.5
B 2 249 208156 1381.74 702 678 150.2
B 0 173 186561 1237.92 702 678 150.2
B 7 252 114479 757.88 702 678 150.2
C 9 38 1378435 7393.52 677 670 186.3
C 12 252 260704 1395.42 677 670 186.3
C 1 16 232812 1245.75 677 670 186.3
D 2 62 1398378 7367.79 664 635 189.7
D 11 129 843047 4440.53 664 635 189.7
D 14 52 117680 616.97 664 635 189.7

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