ASTROSAT CZTI

Data Quality Report

Orbit 13394

Creation date: 2024-06-27T16:40:09.415376
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/AS1A04_103T01_9000001988_13394cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13394cztM0_level2_quad_clean.evt
Size (bytes)621,745,920119,404,800
Size592.9 MB 113.9 MB
Events in quadrant A3,866,098776,702
Events in quadrant B5,025,190749,797
Events in quadrant C4,318,557770,772
Events in quadrant D5,047,965733,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173023
B0205512
C0181442
D0207232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8433680.806356%
B84336077.197913%
C84331201.422981%
D84332022.395352%

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 8919 8434 0 0 0.00% 0.00%
B 8919 8434 367 367 4.11% 4.35%
C 8919 8434 21 21 0.24% 0.25%
D 8919 8436 120 120 1.35% 1.42%

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 0 226 8763 37.6 1004 980 207.0
A 12 194 7604 32.0 1004 980 207.0
A 1 162 7451 31.26 1004 980 207.0
B 3 64 1116363 5991.14 965 938 186.2
B 4 173 42777 224.72 965 938 186.2
B 4 142 42165 221.44 965 938 186.2
C 14 220 270983 1180.26 982 985 228.8
C 3 233 195688 851.12 982 985 228.8
C 14 234 22251 92.96 982 985 228.8
D 1 52 920136 3976.03 964 935 231.2
D 8 195 426472 1840.67 964 935 231.2
D 2 234 29517 123.63 964 935 231.2

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