ASTROSAT CZTI

Data Quality Report

Orbit 35377

Creation date: 2022-04-16T10:51:51.987283
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_099T01_9000005068_35377cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35377cztM0_level2_quad_clean.evt
Size (bytes)559,022,40049,622,400
Size533.1 MB 47.3 MB
Events in quadrant A2,818,795299,792
Events in quadrant B6,912,874276,767
Events in quadrant C3,367,934291,621
Events in quadrant D3,482,512273,773

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112263
B0241602
C0129292
D0137392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5140180.350195%
B5140168132.704280%
C51402094.066148%
D5140360.700389%

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 7173 5141 3 3 0.04% 0.06%
B 7173 5141 1486 1486 20.72% 28.90%
C 7173 5141 172 172 2.40% 3.35%
D 7173 5141 22 22 0.31% 0.43%

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 114886 836.84 679 669 136.5
A 14 254 40274 290.18 679 669 136.5
A 9 143 22359 158.92 679 669 136.5
B 4 251 3939672 36006.76 582 570 109.4
B 5 172 307860 2808.89 582 570 109.4
B 5 200 276076 2518.36 582 570 109.4
C 0 10 535703 3626.02 637 644 147.6
C 15 214 211656 1430.0 637 644 147.6
C 15 208 110274 742.95 637 644 147.6
D 8 195 398530 2530.57 643 627 157.2
D 2 31 192050 1217.4 643 627 157.2
D 13 249 84554 533.76 643 627 157.2

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