ASTROSAT CZTI

Data Quality Report

Orbit 20107

Creation date: 2024-06-27T18:11:23.974812
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/AS1A05_180T01_9000002992_20107cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20107cztM0_level2_quad_clean.evt
Size (bytes)650,600,64083,088,000
Size620.5 MB 79.2 MB
Events in quadrant A4,973,565532,681
Events in quadrant B7,260,083415,908
Events in quadrant C3,445,041556,876
Events in quadrant D3,583,602555,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187302
B0260832
C0138652
D0145142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651372211.085521%
B6513175927.007523%
C65131552.379856%
D65131151.765699%

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 7603 6514 378 378 4.97% 5.80%
B 7603 6513 1156 1156 15.20% 17.75%
C 7603 6514 0 0 0.00% 0.00%
D 7603 6514 17 17 0.22% 0.26%

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 14 238 1588353 9278.9 851 835 171.1
A 14 254 104436 605.54 851 835 171.1
A 0 226 7277 37.65 851 835 171.1
B 10 245 4198032 30350.69 726 711 138.3
B 3 64 109075 783.58 726 711 138.3
B 0 183 36521 258.94 726 711 138.3
C 14 238 135395 689.11 846 856 195.2
C 3 233 11466 54.34 846 856 195.2
C 13 61 5711 24.87 846 856 195.2
D 11 176 147576 696.16 866 843 210.8
D 7 238 104734 492.9 866 843 210.8
D 1 52 36905 171.09 866 843 210.8

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