ASTROSAT CZTI

Data Quality Report

Orbit 32172

Creation date: 2024-06-27T20:37:13.048046
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/AS1A09_131T01_9000004690_32172cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32172cztM0_level2_quad_clean.evt
Size (bytes)1,565,879,040255,424,320
Size1.5 GB 243.6 MB
Events in quadrant A8,420,2591,693,974
Events in quadrant B14,766,1761,683,868
Events in quadrant C10,634,2291,504,263
Events in quadrant D12,397,3201,622,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365494
B0569323
C0431393
D0487893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178491250.700319%
B178496563.675276%
C17849394522.102079%
D178495563.115020%

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 19624 17852 0 0 0.00% 0.00%
B 19624 17852 227 227 1.16% 1.27%
C 19624 17846 77 77 0.39% 0.43%
D 19624 17851 349 349 1.78% 1.96%

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 12 189 108274 247.9 2140 2094 428.3
A 13 6 47175 105.25 2140 2094 428.3
A 13 254 31992 69.8 2140 2094 428.3
B 6 159 5053768 12779.2 2092 2035 395.3
B 5 172 820135 2069.52 2092 2035 395.3
B 0 190 385124 969.09 2092 2035 395.3
C 14 254 1337807 3184.71 1802 1809 419.5
C 14 238 1287287 3064.28 1802 1809 419.5
C 0 10 515699 1224.99 1802 1809 419.5
D 8 195 2654746 5389.62 2059 2001 492.2
D 12 233 566047 1145.98 2059 2001 492.2
D 12 218 521544 1055.56 2059 2001 492.2

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