ASTROSAT CZTI

Data Quality Report

Orbit 20074

Creation date: 2024-06-27T18:10:56.061861
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/AS1A05_180T01_9000002992_20074cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20074cztM0_level2_quad_clean.evt
Size (bytes)121,057,92016,200,000
Size115.4 MB 15.4 MB
Events in quadrant A837,226100,470
Events in quadrant B819,850102,353
Events in quadrant C786,65295,221
Events in quadrant D1,129,20191,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034061
B033451
C032321
D042992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133160.450789%
B1331120.901578%
C133190.676183%
D1330493.684211%

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 1331 1331 3 3 0.23% 0.23%
B 1331 1331 2 2 0.15% 0.15%
C 1331 1331 0 0 0.00% 0.00%
D 1330 1330 44 44 3.31% 3.31%

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 4 2 18942 434.76 210 207 43.1
A 11 29 7649 172.7 210 207 43.1
A 0 226 1868 38.55 210 207 43.1
B 4 80 7205 174.5 204 200 40.1
B 15 201 7144 172.98 204 200 40.1
B 12 111 4333 102.95 204 200 40.1
C 14 238 32415 707.98 192 194 45.5
C 4 254 2690 54.84 192 194 45.5
C 3 233 2087 41.59 192 194 45.5
D 1 52 203757 4148.17 196 191 49.1
D 7 223 153032 3114.52 196 191 49.1
D 12 218 25053 506.63 196 191 49.1

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