ASTROSAT CZTI

Data Quality Report

Orbit 36075

Creation date: 2022-08-10T05:48:07.587962
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/AS1T04_069T01_9000005158_36075cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36075cztM0_level2_quad_clean.evt
Size (bytes)408,263,04056,482,560
Size389.3 MB 53.9 MB
Events in quadrant A3,057,790344,092
Events in quadrant B2,597,817351,910
Events in quadrant C2,666,554344,576
Events in quadrant D3,698,409314,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122983
B0107892
C0107852
D0143662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5061871.719028%
B5061320.632286%
C5061290.573009%
D50612484.900217%

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 7094 5062 72 72 1.01% 1.42%
B 7094 5062 24 24 0.34% 0.47%
C 7094 5062 23 23 0.32% 0.45%
D 7094 5062 226 226 3.19% 4.46%

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 0 8 382775 3186.32 592 580 119.9
A 9 143 195666 1626.41 592 580 119.9
A 10 83 164741 1368.59 592 580 119.9
B 5 255 140669 1228.26 591 576 114.1
B 0 190 50226 435.3 591 576 114.1
B 5 172 37901 327.25 591 576 114.1
C 15 214 214410 1582.81 580 584 135.1
C 0 10 93146 685.18 580 584 135.1
C 15 208 88524 650.96 580 584 135.1
D 12 227 605324 4395.61 568 553 137.6
D 1 52 264987 1921.96 568 553 137.6
D 12 17 131569 952.25 568 553 137.6

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