ASTROSAT CZTI

Data Quality Report

Orbit 50990

Creation date: 2025-03-02T21:44:33.378623
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/AS1C07_001T02_9000006452_50990cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50990cztM0_level2_quad_clean.evt
Size (bytes)511,608,96094,654,080
Size487.9 MB 90.3 MB
Events in quadrant A4,135,825616,711
Events in quadrant B3,817,778661,862
Events in quadrant C4,199,934580,532
Events in quadrant D6,263,673538,536

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167811
B0161803
C0174221
D0233821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67142183.246947%
B67142734.066130%
C67142954.393804%
D67144116.121537%

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 7119 6714 91 91 1.28% 1.36%
B 7118 6713 87 87 1.22% 1.30%
C 7119 6714 206 206 2.89% 3.07%
D 7119 6714 309 309 4.34% 4.60%

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 12 3 487870 2811.0 701 686 173.3
A 4 3 151760 871.68 701 686 173.3
A 3 130 139585 801.43 701 686 173.3
B 12 32 314187 2129.08 695 671 147.3
B 4 81 211746 1433.4 695 671 147.3
B 7 252 101408 684.1 695 671 147.3
C 1 44 637758 3488.32 674 670 182.6
C 15 147 253391 1383.75 674 670 182.6
C 13 3 116197 632.56 674 670 182.6
D 7 39 1140658 6119.64 666 640 186.3
D 10 181 738670 3961.76 666 640 186.3
D 2 216 733425 3933.6 666 640 186.3

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