ASTROSAT CZTI

Data Quality Report

Orbit 30239

Creation date: 2024-06-27T20:12:32.487565
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/AS1A10_007T01_9000004350_30239cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30239cztM0_level2_quad_clean.evt
Size (bytes)538,655,040104,771,520
Size513.7 MB 99.9 MB
Events in quadrant A3,451,724680,567
Events in quadrant B5,271,052694,961
Events in quadrant C3,543,674676,616
Events in quadrant D3,603,703664,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140372
B0200282
C0143252
D0146402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6550590.900763%
B65501191.816794%
C6550851.297710%
D655080.122137%

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 7890 6551 5 5 0.06% 0.08%
B 7890 6551 1 1 0.01% 0.02%
C 7890 6551 1 1 0.01% 0.02%
D 7890 6551 3 3 0.04% 0.05%

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 8 192 23419 128.8 883 870 175.1
A 0 13 17230 93.45 883 870 175.1
A 13 254 11074 58.29 883 870 175.1
B 6 159 1820289 11039.24 876 856 164.8
B 12 111 19444 112.78 876 856 164.8
B 11 111 18025 104.17 876 856 164.8
C 14 238 139392 691.35 859 868 200.4
C 3 233 35362 172.15 859 868 200.4
C 2 114 15312 72.09 859 868 200.4
D 8 195 263808 1275.9 863 845 206.1
D 2 234 23987 112.29 863 845 206.1
D 10 199 21816 101.75 863 845 206.1

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