ASTROSAT CZTI

Data Quality Report

Orbit 34335

Creation date: 2022-02-03T01:19:52.813456
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/AS1C07_001T05_9000004902_34335cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34335cztM0_level2_quad_clean.evt
Size (bytes)509,520,960104,100,480
Size485.9 MB 99.3 MB
Events in quadrant A2,528,567712,764
Events in quadrant B3,194,172718,124
Events in quadrant C3,049,771727,845
Events in quadrant D6,319,113642,477

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106263
B0127092
C0122952
D0223382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501170.139693%
B50111603.192975%
C5011791.576532%
D501176715.306326%

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 7104 5012 1 1 0.01% 0.02%
B 7104 5012 111 111 1.56% 2.21%
C 7104 5012 49 49 0.69% 0.98%
D 7104 5012 725 725 10.21% 14.47%

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 10 83 31724 247.59 634 624 125.6
A 9 143 29645 231.04 634 624 125.6
A 13 6 17671 135.72 634 624 125.6
B 5 172 419900 3590.73 630 616 116.8
B 0 229 99943 850.63 630 616 116.8
B 5 255 72365 614.45 630 616 116.8
C 15 214 212986 1466.05 635 641 144.8
C 14 254 170415 1172.14 635 641 144.8
C 0 10 138504 951.82 635 641 144.8
D 12 235 2414684 15072.49 600 588 160.2
D 8 195 896011 5590.6 600 588 160.2
D 2 250 205023 1276.4 600 588 160.2

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