ASTROSAT CZTI

Data Quality Report

Orbit 54136

Creation date: 2025-09-30T17:28:25.383108
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_012T01_9000006512_54136cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54136cztM0_level2_quad_clean.evt
Size (bytes)586,270,08094,533,120
Size559.1 MB 90.2 MB
Events in quadrant A3,207,256657,766
Events in quadrant B3,895,642692,650
Events in quadrant C4,114,838605,514
Events in quadrant D9,960,306435,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143442
B0161362
C0173372
D0343152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6747670.993034%
B67481872.771191%
C67483585.305276%
D6748203730.186722%

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 7717 6747 9 9 0.12% 0.13%
B 7718 6749 110 110 1.43% 1.63%
C 7718 6749 335 335 4.34% 4.96%
D 7718 6748 2041 2041 26.44% 30.25%

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 15 174 120932 674.86 721 702 178.2
A 4 3 67508 374.99 721 702 178.2
A 7 158 50722 280.77 721 702 178.2
B 5 236 498080 3289.16 702 678 151.2
B 15 20 198261 1306.55 702 678 151.2
B 10 245 85395 560.21 702 678 151.2
C 13 3 1064286 5648.4 679 673 188.3
C 12 252 119929 633.32 679 673 188.3
C 1 16 107943 569.67 679 673 188.3
D 7 70 4530447 25907.62 611 580 174.8
D 2 165 1279549 7314.79 611 580 174.8
D 8 176 1072583 6131.09 611 580 174.8

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