ASTROSAT CZTI

Data Quality Report

Orbit 04047

Creation date: 2024-06-27T14:36:44.657948
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/AS1G05_241T04_9000000518_04047cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04047cztM0_level2_quad_clean.evt
Size (bytes)440,262,72064,376,640
Size419.9 MB 61.4 MB
Events in quadrant A3,738,453372,354
Events in quadrant B3,479,906381,055
Events in quadrant C2,794,753378,172
Events in quadrant D2,884,274370,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153182
B0144141
C0129881
D0133531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64112423.774762%
B64111281.996568%
C6411310.483544%
D6411480.748713%

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 7271 6411 177 177 2.43% 2.76%
B 7271 6411 52 52 0.72% 0.81%
C 7271 6412 1 1 0.01% 0.02%
D 7271 6412 18 18 0.25% 0.28%

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 5 450631 3035.55 725 709 148.2
A 8 15 184690 1241.29 725 709 148.2
A 0 199 131830 884.65 725 709 148.2
B 14 167 434445 2990.69 738 720 145.0
B 15 204 153695 1054.82 738 720 145.0
B 4 81 22428 149.68 738 720 145.0
C 1 16 13112 74.82 708 709 165.8
C 9 144 8562 47.37 708 709 165.8
C 12 4 5937 31.54 708 709 165.8
D 13 239 63381 361.68 713 690 173.3
D 2 232 54725 311.74 713 690 173.3
D 12 110 48114 273.6 713 690 173.3

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