ASTROSAT CZTI

Data Quality Report

Orbit 35554

Creation date: 2022-04-26T11:19:24.832456
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_093T01_9000005090_35554cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35554cztM0_level2_quad_clean.evt
Size (bytes)618,744,96065,790,720
Size590.1 MB 62.7 MB
Events in quadrant A9,118,617252,996
Events in quadrant B3,157,060458,625
Events in quadrant C3,131,872463,629
Events in quadrant D2,963,850437,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308883
B0130042
C0125572
D0127062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5402392472.639763%
B54021643.035913%
C54021683.109959%
D54021793.313588%

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 7344 5402 946 946 12.88% 17.51%
B 7344 5403 100 100 1.36% 1.85%
C 7344 5403 130 130 1.77% 2.41%
D 7344 5403 105 105 1.43% 1.94%

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 7689488 109172.59 343 336 70.4
A 10 83 87917 1243.5 343 336 70.4
A 13 6 8569 116.89 343 336 70.4
B 5 172 685484 5956.89 605 590 115.0
B 0 189 24542 208.32 605 590 115.0
B 5 31 16518 138.53 605 590 115.0
C 0 10 536282 3924.21 592 598 136.5
C 15 214 241151 1762.19 592 598 136.5
C 14 67 17755 125.69 592 598 136.5
D 10 118 345122 2441.59 582 566 141.1
D 8 195 119013 839.34 582 566 141.1
D 13 249 96248 678.02 582 566 141.1

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