ASTROSAT CZTI

Data Quality Report

Orbit 19255

Creation date: 2024-06-27T18:00:43.094261
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_115T01_9000002848_19255cztM0_level2.evt modeM0/AS1A05_115T01_9000002848_19255cztM0_level2_quad_clean.evt
Size (bytes)581,446,080116,740,800
Size554.5 MB 111.3 MB
Events in quadrant A3,989,880752,129
Events in quadrant B3,844,126766,050
Events in quadrant C4,156,772737,464
Events in quadrant D5,070,646718,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172342
B0167572
C0173572
D0204352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8065720.892746%
B8066690.855443%
C80661281.586908%
D80662012.491941%

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 8960 8067 33 33 0.37% 0.41%
B 8961 8068 0 0 0.00% 0.00%
C 8961 8068 18 18 0.20% 0.22%
D 8961 8067 132 132 1.47% 1.64%

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 5 16 176635 883.32 980 958 198.9
A 8 205 16804 79.68 980 958 198.9
A 11 29 11192 51.46 980 958 198.9
B 12 111 23828 119.57 979 952 191.3
B 11 111 20993 104.75 979 952 191.3
B 14 111 19324 96.03 979 952 191.3
C 3 233 237331 1053.02 950 955 224.5
C 14 238 144144 637.89 950 955 224.5
C 9 54 69783 306.62 950 955 224.5
D 1 52 1244424 5383.52 948 920 231.0
D 13 104 199666 860.43 948 920 231.0
D 5 222 31154 130.89 948 920 231.0

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