ASTROSAT CZTI

Data Quality Report

Orbit 34326

Creation date: 2022-02-02T11:21:45.902505
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/AS1A05_082T08_9000004900_34326cztM0_level2.evt modeM0/AS1A05_082T08_9000004900_34326cztM0_level2_quad_clean.evt
Size (bytes)444,749,76052,254,720
Size424.1 MB 49.8 MB
Events in quadrant A2,208,596317,857
Events in quadrant B3,230,809304,768
Events in quadrant C2,693,689320,587
Events in quadrant D5,009,348300,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096851
B0127121
C0108891
D0183131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A481640.083056%
B48163196.623754%
C4816430.892857%
D481648710.112126%

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 4816 4816 0 0 0.00% 0.00%
B 4816 4816 196 196 4.07% 4.07%
C 4816 4816 33 33 0.69% 0.69%
D 4816 4816 356 356 7.39% 7.39%

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 17448 144.75 565 554 116.7
A 13 6 7849 62.5 565 554 116.7
A 13 254 7399 58.65 565 554 116.7
B 5 172 600425 5606.19 547 533 107.0
B 3 32 296494 2765.85 547 533 107.0
B 4 251 72505 672.6 547 533 107.0
C 15 214 200970 1554.69 551 556 128.9
C 14 254 151064 1167.55 551 556 128.9
C 8 222 95233 734.45 551 556 128.9
D 12 235 1145651 8352.9 527 511 137.1
D 10 118 736788 5370.56 527 511 137.1
D 8 195 707498 5156.92 527 511 137.1

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