ASTROSAT CZTI

Data Quality Report

Orbit 53075

Creation date: 2025-07-21T06:43:46.794139
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/AS1C09_011T07_9000006488_53075cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53075cztM0_level2_quad_clean.evt
Size (bytes)903,288,96067,446,720
Size861.4 MB 64.3 MB
Events in quadrant A14,830,85390,690
Events in quadrant B3,452,254624,930
Events in quadrant C9,936,322371,884
Events in quadrant D4,735,057519,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482411
B0147691
C0336801
D0185481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231552388.637458%
B6231891.428342%
C6232243739.104621%
D62323615.792683%

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 7261 6231 4745 4745 65.35% 76.15%
B 7261 6232 60 60 0.83% 0.96%
C 7262 6233 2253 2253 31.02% 36.15%
D 7262 6233 322 322 4.43% 5.17%

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 9 191 12638965 138908.72 356 346 91.0
A 3 62 357483 3925.23 356 346 91.0
A 7 206 233549 2563.09 356 346 91.0
B 4 81 456809 3425.44 630 610 133.2
B 10 247 199765 1495.39 630 610 133.2
B 1 255 85534 637.66 630 610 133.2
C 1 241 5563006 40303.15 499 494 138.0
C 15 224 1827289 13236.03 499 494 138.0
C 13 3 130737 943.67 499 494 138.0
D 12 17 1215408 6915.63 608 579 175.7
D 3 12 283672 1611.55 608 579 175.7
D 3 224 254662 1446.41 608 579 175.7

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