ASTROSAT CZTI

Data Quality Report

Orbit 23947

Creation date: 2024-06-27T19:00:22.355016
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/AS1A07_101T02_9000003544_23947cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23947cztM0_level2_quad_clean.evt
Size (bytes)619,931,520109,391,040
Size591.2 MB 104.3 MB
Events in quadrant A3,955,153691,667
Events in quadrant B4,052,506702,403
Events in quadrant C4,034,838683,032
Events in quadrant D6,171,151660,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01733421
B01743526
C01739126
D02406019

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8273640.773601%
B82711331.608028%
C82701722.079807%
D82734745.729481%

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 8958 8286 0 0 0.00% 0.00%
B 8958 8286 0 0 0.00% 0.00%
C 8957 8284 1 1 0.01% 0.01%
D 8957 8285 179 179 2.00% 2.16%

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 14 111 25168 117.38 1018 996 205.9
A 13 254 12822 57.43 1018 996 205.9
A 3 137 9303 40.34 1018 996 205.9
B 0 197 30362 149.66 1018 990 196.3
B 12 111 24479 119.69 1018 990 196.3
B 11 111 21261 103.29 1018 990 196.3
C 14 238 153713 666.35 978 982 229.2
C 0 10 27916 117.51 978 982 229.2
C 8 128 14562 59.25 978 982 229.2
D 12 218 969090 4091.98 964 935 236.6
D 8 195 932444 3937.1 964 935 236.6
D 1 52 239411 1007.94 964 935 236.6

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