ASTROSAT CZTI

Data Quality Report

Orbit 27401

Creation date: 2024-06-27T19:39:43.166518
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/AS1T03_249T01_9000003934_27401cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27401cztM0_level2_quad_clean.evt
Size (bytes)1,106,049,600167,385,600
Size1.0 GB 159.6 MB
Events in quadrant A6,952,2111,060,986
Events in quadrant B7,183,0591,083,626
Events in quadrant C7,024,5321,022,589
Events in quadrant D11,423,573967,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282830
B0292050
C0286260
D0428310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387
B0387
C0386
D0389

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13441910.677033%
B134591280.951036%
C134591931.433985%
D1338611458.553713%

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 18579 13607 6 6 0.03% 0.04%
B 18582 13639 2 2 0.01% 0.01%
C 18584 13631 1 1 0.01% 0.01%
D 18581 13505 914 914 4.92% 6.77%

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 96 50914 139.33 1785 1752 352.8
A 13 254 23229 60.87 1785 1752 352.8
A 12 189 15924 40.16 1785 1752 352.8
B 0 230 154137 467.37 1763 1725 326.1
B 12 111 39772 116.67 1763 1725 326.1
B 15 32 38755 113.55 1763 1725 326.1
C 14 238 276433 700.37 1699 1713 392.2
C 2 16 122971 309.13 1699 1713 392.2
C 13 61 11597 25.2 1699 1713 392.2
D 1 52 4531672 11680.1 1660 1624 387.8
D 2 250 378954 972.89 1660 1624 387.8
D 10 50 112812 286.68 1660 1624 387.8

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