ASTROSAT CZTI

Data Quality Report

Orbit 18343

Creation date: 2024-06-27T17:48:37.134990
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/AS1A06_006T01_9000002720_18343cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18343cztM0_level2_quad_clean.evt
Size (bytes)519,563,52094,288,320
Size495.5 MB 89.9 MB
Events in quadrant A3,374,558602,561
Events in quadrant B3,746,777602,680
Events in quadrant C3,415,286596,239
Events in quadrant D4,726,467569,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145061
B0153931
C0145021
D0186461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69511802.589555%
B69522082.991945%
C69521972.833717%
D69525107.336018%

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 7216 6952 16 16 0.22% 0.23%
B 7217 6953 20 20 0.28% 0.29%
C 7217 6953 4 4 0.06% 0.06%
D 7217 6953 335 335 4.64% 4.82%

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 15 174 63565 356.69 860 840 175.9
A 4 2 8036 40.92 860 840 175.9
A 0 226 7640 38.67 860 840 175.9
B 7 220 217513 1323.63 854 830 163.7
B 0 244 73725 445.29 854 830 163.7
B 0 229 24954 147.36 854 830 163.7
C 14 238 125737 644.95 824 829 193.7
C 0 207 39538 199.87 824 829 193.7
C 3 233 38788 196.0 824 829 193.7
D 1 52 1066107 5272.55 825 801 202.0
D 7 238 273944 1351.88 825 801 202.0
D 14 34 96850 475.38 825 801 202.0

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