ASTROSAT CZTI

Data Quality Report

Orbit 35296

Creation date: 2022-04-08T23:54:41.684357
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/AS1A11_082T01_9000005056_35296cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35296cztM0_level2_quad_clean.evt
Size (bytes)658,730,88079,974,720
Size628.2 MB 76.3 MB
Events in quadrant A2,851,782537,845
Events in quadrant B8,380,757468,731
Events in quadrant C3,358,482532,150
Events in quadrant D4,966,116476,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122943
B0288562
C0134782
D0185092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5801300.517152%
B5801230739.769005%
C58011101.896225%
D580172112.428892%

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 7114 5802 21 21 0.30% 0.36%
B 7113 5800 1921 1921 27.01% 33.12%
C 7114 5802 97 97 1.36% 1.67%
D 7113 5801 662 662 9.31% 11.41%

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 15 169 133620 1002.78 660 646 132.6
A 10 83 103566 776.13 660 646 132.6
A 3 1 24309 178.44 660 646 132.6
B 5 236 3510264 33942.37 536 522 103.4
B 5 172 2660714 25726.46 536 522 103.4
B 4 232 38266 365.02 536 522 103.4
C 0 10 536408 3618.74 637 639 148.1
C 15 214 239536 1613.58 637 639 148.1
C 4 254 57505 384.09 637 639 148.1
D 7 80 1538525 10618.8 591 575 144.8
D 8 195 353153 2434.38 591 575 144.8
D 2 249 327434 2256.8 591 575 144.8

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