ASTROSAT CZTI

Data Quality Report

Orbit 34326

Creation date: 2022-02-02T11:29:40.200429
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/AS1C07_001T05_9000004902_34326cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34326cztM0_level2_quad_clean.evt
Size (bytes)75,553,92017,712,000
Size72.1 MB 16.9 MB
Events in quadrant A410,743116,061
Events in quadrant B603,865116,560
Events in quadrant C539,893116,957
Events in quadrant D663,890110,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019682
B024601
C022461
D026741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97720.204708%
B977222.251791%
C977181.842375%
D977202.047083%

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 977 977 0 0 0.00% 0.00%
B 977 977 15 15 1.54% 1.54%
C 977 977 17 17 1.74% 1.74%
D 977 977 18 18 1.84% 1.84%

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 10 83 12873 562.25 102 100 22.7
A 13 6 1719 71.27 102 100 22.7
A 13 254 1543 63.52 102 100 22.7
B 5 172 90917 4152.38 102 99 21.9
B 3 32 49205 2245.23 102 99 21.9
B 4 171 37180 1695.42 102 99 21.9
C 14 254 57503 2367.01 98 99 24.3
C 15 214 44775 1842.18 98 99 24.3
C 0 10 41071 1689.45 98 99 24.3
D 8 195 135693 5396.96 96 93 25.1
D 12 218 71282 2833.36 96 93 25.1
D 12 235 25472 1010.1 96 93 25.1

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