ASTROSAT CZTI

Data Quality Report

Orbit 22816

Creation date: 2024-06-27T18:46:10.819962
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/AS1C05_012T02_9000003372_22816cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22816cztM0_level2_quad_clean.evt
Size (bytes)446,866,560110,600,640
Size426.2 MB 105.5 MB
Events in quadrant A3,109,056739,306
Events in quadrant B3,211,214743,885
Events in quadrant C3,127,657701,182
Events in quadrant D3,627,445695,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137272
B0139702
C0137252
D0152182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6736691.024347%
B6737831.232002%
C67371241.840582%
D67371612.389788%

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 7066 6738 0 0 0.00% 0.00%
B 7067 6739 0 0 0.00% 0.00%
C 7067 6739 0 0 0.00% 0.00%
D 7067 6739 72 72 1.02% 1.07%

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 13 254 11646 67.16 805 788 161.7
A 0 226 7008 38.47 805 788 161.7
A 3 137 6752 36.89 805 788 161.7
B 0 190 46698 303.44 795 774 151.3
B 0 230 26769 171.76 795 774 151.3
B 0 229 19627 124.57 795 774 151.3
C 14 238 121450 681.62 764 768 177.1
C 0 239 23164 126.49 764 768 177.1
C 13 61 5442 26.4 764 768 177.1
D 7 238 454144 2397.51 781 757 189.1
D 1 52 64051 334.7 781 757 189.1
D 8 195 48689 253.46 781 757 189.1

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