ASTROSAT CZTI

Data Quality Report

Orbit 16622

Creation date: 2024-06-27T17:25:15.500211
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/AS1A05_064T01_9000002450_16622cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16622cztM0_level2_quad_clean.evt
Size (bytes)535,541,760124,513,920
Size510.7 MB 118.7 MB
Events in quadrant A3,140,609840,970
Events in quadrant B3,315,346849,413
Events in quadrant C3,915,474820,552
Events in quadrant D5,372,411772,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144092
B0146511
C0161681
D0210981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001610.871304%
B7001761.085559%
C70011221.742608%
D70016489.255821%

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 7337 7004 11 11 0.15% 0.16%
B 7337 7004 2 2 0.03% 0.03%
C 7337 7004 3 3 0.04% 0.04%
D 7337 7004 557 557 7.59% 7.95%

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 9 143 73621 452.07 795 778 161.1
A 0 226 6964 38.39 795 778 161.1
A 12 194 5937 32.02 795 778 161.1
B 15 35 56778 364.51 799 778 153.6
B 3 209 33882 215.48 799 778 153.6
B 0 198 23798 149.84 799 778 153.6
C 3 233 631908 3526.69 765 768 179.0
C 7 247 160361 891.78 765 768 179.0
C 14 238 117671 653.23 765 768 179.0
D 1 52 2390532 13209.68 744 723 180.9
D 10 70 114467 628.72 744 723 180.9
D 2 234 27653 148.86 744 723 180.9

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