ASTROSAT CZTI

Data Quality Report

Orbit 36173

Creation date: 2022-06-28T12:30:37.898572
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/AS1T05_009T05_9000005162_36173cztM0_level2.evt modeM0/AS1T05_009T05_9000005162_36173cztM0_level2_quad_clean.evt
Size (bytes)324,241,92066,346,560
Size309.2 MB 63.3 MB
Events in quadrant A1,870,764433,746
Events in quadrant B2,416,230444,052
Events in quadrant C2,082,787454,153
Events in quadrant D3,182,749400,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080962
B097751
C085181
D0121401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A392160.153022%
B3921902.295333%
C3921230.586585%
D39213819.716909%

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 5924 3922 0 0 0.00% 0.00%
B 5924 3922 61 61 1.03% 1.56%
C 5924 3922 15 15 0.25% 0.38%
D 5924 3922 334 334 5.64% 8.52%

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 10 83 102928 1138.07 451 443 90.1
A 8 144 9753 103.39 451 443 90.1
A 13 254 6968 72.46 451 443 90.1
B 5 172 278425 3251.14 451 439 85.5
B 4 171 268996 3140.87 451 439 85.5
B 0 190 47721 552.98 451 439 85.5
C 15 214 171434 1647.01 447 451 103.8
C 0 10 96802 928.11 447 451 103.8
C 1 23 58736 561.43 447 451 103.8
D 13 249 741014 7399.81 418 407 100.1
D 2 250 217556 2169.65 418 407 100.1
D 12 17 154657 1541.2 418 407 100.1

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