ASTROSAT CZTI

Data Quality Report

Orbit 51972

Creation date: 2025-05-08T00:28:24.049993
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_011T06_9000006468_51972cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51972cztM0_level2_quad_clean.evt
Size (bytes)663,808,32077,800,320
Size633.1 MB 74.2 MB
Events in quadrant A5,693,173511,966
Events in quadrant B4,344,118574,007
Events in quadrant C8,250,317367,663
Events in quadrant D5,826,419488,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210781
B0171643
C0286501
D0214521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A591475212.715590%
B59134918.303738%
C5914220637.301319%
D59144197.084883%

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 7009 5915 555 555 7.92% 9.38%
B 7008 5914 176 176 2.51% 2.98%
C 7009 5915 1645 1645 23.47% 27.81%
D 7009 5915 394 394 5.62% 6.66%

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 7 64 2148910 14414.37 591 575 149.0
A 4 3 187902 1256.88 591 575 149.0
A 4 249 179907 1203.24 591 575 149.0
B 4 249 368130 2955.67 592 573 124.4
B 4 206 327614 2629.86 592 573 124.4
B 4 81 184903 1482.27 592 573 124.4
C 15 224 5124395 37008.34 495 490 138.5
C 15 147 717132 5176.08 495 490 138.5
C 13 3 201433 1451.35 495 490 138.5
D 6 42 1175690 6934.62 595 568 169.5
D 10 199 764501 4508.11 595 568 169.5
D 7 126 271580 1599.29 595 568 169.5

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