ASTROSAT CZTI

Data Quality Report

Orbit 18851

Creation date: 2024-06-27T17:55:41.114044
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_094T01_9000002816_18851cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18851cztM0_level2_quad_clean.evt
Size (bytes)552,646,08080,709,120
Size527.0 MB 77.0 MB
Events in quadrant A3,819,217484,727
Events in quadrant B4,198,227488,842
Events in quadrant C3,890,097471,774
Events in quadrant D4,306,241462,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161932
B0172512
C0163092
D0179742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77091942.516539%
B77092513.255935%
C77092663.450512%
D77092292.970554%

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 8279 7711 0 0 0.00% 0.00%
B 8279 7711 30 30 0.36% 0.39%
C 8279 7711 1 1 0.01% 0.01%
D 8279 7711 28 28 0.34% 0.36%

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 13126 60.57 984 963 200.8
A 15 191 10046 45.23 984 963 200.8
A 0 226 8838 39.22 984 963 200.8
B 7 220 113168 589.03 976 951 190.5
B 10 245 76165 394.8 976 951 190.5
B 4 216 74291 384.96 976 951 190.5
C 14 238 144003 644.03 938 941 222.1
C 3 233 64831 287.62 938 941 222.1
C 5 112 13869 58.2 938 941 222.1
D 1 52 226813 951.14 959 929 237.5
D 1 20 212711 891.76 959 929 237.5
D 14 34 139939 585.34 959 929 237.5

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