ASTROSAT CZTI

Data Quality Report

Orbit 34434

Creation date: 2022-02-09T17:32:55.101467
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/AS1A10_058T05_9000004918_34434cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34434cztM0_level2_quad_clean.evt
Size (bytes)608,918,40048,551,040
Size580.7 MB 46.3 MB
Events in quadrant A2,611,392309,272
Events in quadrant B3,612,011308,970
Events in quadrant C2,849,286305,565
Events in quadrant D9,012,162176,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110063
B0139772
C0115032
D0304492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5252100.190404%
B52523656.949733%
C5252340.647372%
D5252283553.979436%

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 7075 5253 3 3 0.04% 0.06%
B 7075 5253 243 243 3.43% 4.63%
C 7075 5253 23 23 0.33% 0.44%
D 7075 5253 2340 2340 33.07% 44.55%

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 37017 275.99 659 646 131.8
A 9 143 14561 105.59 659 646 131.8
A 13 254 8883 62.5 659 646 131.8
B 5 172 927325 7694.77 632 615 120.4
B 0 190 132030 1091.18 632 615 120.4
B 4 232 30020 244.16 632 615 120.4
C 15 214 220335 1484.09 639 644 148.0
C 0 10 92349 619.5 639 644 148.0
C 14 67 26305 173.35 639 644 148.0
D 10 118 5439170 44674.3 493 479 121.7
D 8 195 994619 8166.03 493 479 121.7
D 12 79 163300 1337.44 493 479 121.7

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