ASTROSAT CZTI

Data Quality Report

Orbit 53081

Creation date: 2025-07-21T19:17:45.315606
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_53081cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53081cztM0_level2_quad_clean.evt
Size (bytes)806,129,28075,464,640
Size768.8 MB 72.0 MB
Events in quadrant A15,189,274103,645
Events in quadrant B3,151,365656,260
Events in quadrant C6,882,265519,399
Events in quadrant D4,106,144546,505

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495483
B0141921
C0251121
D0169331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584573287.059538%
B65851031.564161%
C6585101215.368261%
D65852433.690205%

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 7128 6583 4887 4887 68.56% 74.24%
B 7130 6586 16 16 0.22% 0.24%
C 7130 6586 800 800 11.22% 12.15%
D 7130 6586 159 159 2.23% 2.41%

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 12847488 136751.19 371 363 93.9
A 0 250 254870 2709.1 371 363 93.9
A 0 8 122696 1302.17 371 363 93.9
B 0 213 121222 837.45 671 649 144.0
B 1 255 113688 785.12 671 649 144.0
B 4 81 84923 585.33 671 649 144.0
C 15 224 2860602 17096.53 613 608 167.3
C 1 241 456007 2722.29 613 608 167.3
C 9 38 358969 2142.22 613 608 167.3
D 12 17 613509 3339.43 650 621 183.5
D 11 245 300541 1634.17 650 621 183.5
D 2 153 119550 648.01 650 621 183.5

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