ASTROSAT CZTI

Data Quality Report

Orbit 47695

Creation date: 2024-07-24T10:32:53.908401
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/AS1A13_082T01_9000006342_47695cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47695cztM0_level2_quad_clean.evt
Size (bytes)506,243,520113,400,000
Size482.8 MB 108.1 MB
Events in quadrant A7,407,254735,127
Events in quadrant B3,427,622775,750
Events in quadrant C3,217,547749,345
Events in quadrant D4,144,475686,153

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274452
B0147952
C0145832
D0170732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69953775.389564%
B69961672.387078%
C6996871.243568%
D69961792.558605%

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 7825 6995 12 12 0.15% 0.17%
B 7826 6996 5 5 0.06% 0.07%
C 7826 6996 7 7 0.09% 0.10%
D 7826 6996 79 79 1.01% 1.13%

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 4152167 24735.46 804 785 167.8
A 9 191 143880 852.61 804 785 167.8
A 3 137 9485 51.84 804 785 167.8
B 0 200 118182 726.14 810 783 161.7
B 0 198 33407 201.79 810 783 161.7
B 0 246 21725 129.53 810 783 161.7
C 12 2 56571 294.38 800 806 189.4
C 14 254 38280 197.82 800 806 189.4
C 13 61 5263 23.53 800 806 189.4
D 12 2 679265 3375.85 803 778 201.0
D 2 165 146031 722.71 803 778 201.0
D 13 23 45487 222.45 803 778 201.0

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