ASTROSAT CZTI

Data Quality Report

Orbit 35306

Creation date: 2022-04-09T15:56:52.667692
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/AS1T05_023T01_9000005058_35306cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35306cztM0_level2_quad_clean.evt
Size (bytes)633,611,52050,068,800
Size604.3 MB 47.7 MB
Events in quadrant A3,963,036311,187
Events in quadrant B7,659,441239,045
Events in quadrant C2,984,311311,632
Events in quadrant D4,236,707294,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150393
B0262732
C0116282
D0160442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51081472.877839%
B5108212541.601410%
C5108971.898982%
D51082294.483164%

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 7261 5109 132 132 1.82% 2.58%
B 7261 5108 1649 1649 22.71% 32.28%
C 7261 5109 81 81 1.12% 1.59%
D 7261 5109 241 241 3.32% 4.72%

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 1336383 10388.74 646 636 128.6
A 10 83 92456 714.13 646 636 128.6
A 13 6 13393 99.22 646 636 128.6
B 5 236 3774621 37127.72 538 525 101.7
B 5 172 1763506 17343.35 538 525 101.7
B 3 112 14112 133.66 538 525 101.7
C 0 10 336432 2396.84 615 620 140.1
C 15 214 214187 1524.32 615 620 140.1
C 3 233 26529 184.92 615 620 140.1
D 7 80 642821 4433.74 613 598 144.8
D 13 249 353895 2439.07 613 598 144.8
D 8 195 304891 2100.76 613 598 144.8

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