ASTROSAT CZTI

Data Quality Report

Orbit 52843

Creation date: 2025-07-16T12:02:44.126260
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_9000006480_52843cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52843cztM0_level2_quad_clean.evt
Size (bytes)608,022,72083,387,520
Size579.9 MB 79.5 MB
Events in quadrant A6,305,348549,350
Events in quadrant B5,529,477582,756
Events in quadrant C4,834,048489,147
Events in quadrant D5,378,390488,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229421
B0204551
C0188731
D0201142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59415569.358694%
B59425158.667115%
C594282513.884214%
D594165010.940919%

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 6961 5941 496 496 7.13% 8.35%
B 6962 5942 373 373 5.36% 6.28%
C 6962 5943 774 774 11.12% 13.02%
D 6961 5942 649 649 9.32% 10.92%

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 1546175 10103.44 609 596 153.0
A 3 62 703661 4595.93 609 596 153.0
A 12 80 526206 3435.91 609 596 153.0
B 8 3 1658547 12939.12 603 583 128.1
B 5 172 831470 6484.43 603 583 128.1
B 10 254 117843 915.12 603 583 128.1
C 15 224 2193313 13926.08 567 562 157.5
C 15 147 117942 745.48 567 562 157.5
C 12 249 66957 421.67 567 562 157.5
D 8 176 2312186 13633.92 582 556 169.5
D 7 96 123386 724.44 582 556 169.5
D 11 176 101614 596.03 582 556 169.5

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