ASTROSAT CZTI

Data Quality Report

Orbit 26446

Creation date: 2024-06-27T19:29:07.105840
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/AS1A09_056T01_9000003824_26446cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26446cztM0_level2_quad_clean.evt
Size (bytes)552,340,80099,812,160
Size526.8 MB 95.2 MB
Events in quadrant A3,287,259665,322
Events in quadrant B3,193,317687,099
Events in quadrant C3,503,514653,427
Events in quadrant D6,329,917590,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136020
B0132810
C0143730
D0228660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6104510.835518%
B6103260.426020%
C61031472.408651%
D610397015.893823%

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 7529 6105 22 22 0.29% 0.36%
B 7528 6104 1 1 0.01% 0.02%
C 7528 6104 26 26 0.35% 0.43%
D 7528 6104 900 900 11.96% 14.74%

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 190861 1209.38 800 787 157.2
A 13 254 9462 55.2 800 787 157.2
A 12 189 7305 41.47 800 787 157.2
B 12 111 16866 109.91 805 788 146.3
B 7 205 16692 108.72 805 788 146.3
B 5 172 15128 98.03 805 788 146.3
C 14 238 128283 697.08 787 795 182.9
C 2 16 117829 639.92 787 795 182.9
C 3 233 95415 517.36 787 795 182.9
D 7 80 2570677 14896.67 735 720 172.5
D 1 52 667182 3863.12 735 720 172.5
D 12 233 167307 965.62 735 720 172.5

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