ASTROSAT CZTI

Data Quality Report

Orbit 02522

Creation date: 2024-06-27T14:19:01.269361
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/AS1T01_103T01_9000000374_02522cztM0_level2.evt modeM0/AS1T01_103T01_9000000374_02522cztM0_level2_quad_clean.evt
Size (bytes)717,886,08064,209,600
Size684.6 MB 61.2 MB
Events in quadrant A3,641,807391,941
Events in quadrant B3,559,161391,799
Events in quadrant C3,714,026388,952
Events in quadrant D10,308,802239,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164064
B0159943
C0167793
D0358063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76253204.196721%
B76252843.724590%
C76253274.288525%
D7625307840.367213%

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 7800 7627 10 10 0.13% 0.13%
B 7800 7627 1 1 0.01% 0.01%
C 7800 7627 85 85 1.09% 1.11%
D 7800 7626 2039 2039 26.14% 26.74%

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 15 236 237539 1303.47 884 864 181.6
A 12 194 9655 48.42 884 864 181.6
A 0 226 9250 46.19 884 864 181.6
B 7 205 78039 443.24 895 868 174.1
B 12 111 14192 76.53 895 868 174.1
B 5 172 14017 75.52 895 868 174.1
C 14 223 355400 1770.07 854 852 200.3
C 10 200 8699 39.18 854 852 200.3
C 13 61 7740 34.39 854 852 200.3
D 11 130 6971250 44273.72 663 643 157.4
D 2 209 429365 2723.02 663 643 157.4
D 11 131 274609 1740.09 663 643 157.4

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