ASTROSAT CZTI

Data Quality Report

Orbit 06490

Creation date: 2024-06-27T15:08:05.346835
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/AS1G06_164T01_9000000866_06490cztM0_level2.evt modeM0/AS1G06_164T01_9000000866_06490cztM0_level2_quad_clean.evt
Size (bytes)502,392,96095,486,400
Size479.1 MB 91.1 MB
Events in quadrant A3,639,007598,867
Events in quadrant B3,672,980598,122
Events in quadrant C3,360,625586,004
Events in quadrant D4,018,072572,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161163
B0161662
C0157092
D0168902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77141391.801919%
B77141461.892663%
C7714911.179673%
D77141361.763028%

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 8009 7716 6 6 0.07% 0.08%
B 8009 7716 7 7 0.09% 0.09%
C 8009 7716 0 0 0.00% 0.00%
D 8009 7716 28 28 0.35% 0.36%

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 8 15 97940 530.73 894 874 182.9
A 15 174 36454 194.54 894 874 182.9
A 15 236 30601 162.54 894 874 182.9
B 0 214 84325 486.56 895 872 171.5
B 15 204 26644 150.26 895 872 171.5
B 0 219 22607 126.72 895 872 171.5
C 7 247 12076 56.74 857 854 197.8
C 13 61 6828 30.2 857 854 197.8
C 1 16 3189 11.81 857 854 197.8
D 8 195 313737 1479.52 864 834 211.5
D 2 152 188082 885.37 864 834 211.5
D 2 14 67646 315.91 864 834 211.5

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