ASTROSAT CZTI

Data Quality Report

Orbit 30141

Creation date: 2024-06-27T20:11:25.911506
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_097T03_9000004336_30141cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30141cztM0_level2_quad_clean.evt
Size (bytes)665,547,84098,608,320
Size634.7 MB 94.0 MB
Events in quadrant A3,722,103629,737
Events in quadrant B5,689,680626,527
Events in quadrant C5,862,317601,186
Events in quadrant D4,382,617614,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158181
B0225681
C0228694
D0175931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73842833.832611%
B73843715.024377%
C73835407.314100%
D73832493.372613%

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 7399 7385 18 18 0.24% 0.24%
B 7399 7385 8 8 0.11% 0.11%
C 7398 7384 70 70 0.95% 0.95%
D 7398 7384 48 48 0.65% 0.65%

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 0 13 188736 1005.8 915 894 186.8
A 13 254 14016 70.26 915 894 186.8
A 3 137 9591 46.57 915 894 186.8
B 6 159 2088276 12002.55 895 870 173.9
B 0 229 30956 172.99 895 870 173.9
B 10 247 28455 158.61 895 870 173.9
C 3 233 2261021 11178.33 862 866 202.2
C 14 238 173950 856.04 862 866 202.2
C 14 254 51323 249.55 862 866 202.2
D 13 168 264522 1231.83 897 874 214.0
D 13 104 249348 1160.94 897 874 214.0
D 8 195 221387 1030.3 897 874 214.0

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