ASTROSAT CZTI

Data Quality Report

Orbit 24959

Creation date: 2024-06-27T19:11:58.336004
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/AS1T03_200T01_9000003654_24959cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24959cztM0_level2_quad_clean.evt
Size (bytes)495,051,840131,978,880
Size472.1 MB 125.9 MB
Events in quadrant A3,262,372893,238
Events in quadrant B3,707,007905,906
Events in quadrant C3,372,602862,982
Events in quadrant D4,168,590841,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145831
B0156371
C0146421
D0171241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70921872.636774%
B70932263.186240%
C70931672.354434%
D70931632.298040%

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 7117 7093 0 0 0.00% 0.00%
B 7118 7094 21 21 0.30% 0.30%
C 7118 7094 0 0 0.00% 0.00%
D 7118 7094 18 18 0.25% 0.25%

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 10318 55.56 846 827 170.8
A 3 137 7709 40.29 846 827 170.8
A 0 226 7382 38.37 846 827 170.8
B 3 64 159079 999.91 837 816 158.3
B 0 229 145312 912.93 837 816 158.3
B 0 190 25061 153.18 837 816 158.3
C 14 238 127437 674.13 806 808 187.8
C 7 247 46380 242.61 806 808 187.8
C 3 233 33338 173.18 806 808 187.8
D 1 52 422216 2133.66 816 789 197.5
D 8 195 309815 1564.58 816 789 197.5
D 1 3 289303 1460.73 816 789 197.5

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