ASTROSAT CZTI

Data Quality Report

Orbit 35092

Creation date: 2022-03-28T16:19:30.467653
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_015T01_9000005026_35092cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35092cztM0_level2_quad_clean.evt
Size (bytes)464,486,40083,620,800
Size443.0 MB 79.7 MB
Events in quadrant A2,624,323539,836
Events in quadrant B3,382,382551,424
Events in quadrant C3,086,289548,276
Events in quadrant D4,600,267507,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114933
B0137802
C0125032
D0175782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5514180.326442%
B55142464.461371%
C55141021.849837%
D55142524.570185%

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 7037 5515 4 4 0.06% 0.07%
B 7037 5515 115 115 1.63% 2.09%
C 7037 5515 77 77 1.09% 1.40%
D 7037 5515 229 229 3.25% 4.15%

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 80901 617.41 639 627 130.0
A 9 143 24391 182.78 639 627 130.0
A 15 174 15549 114.77 639 627 130.0
B 5 172 667038 5537.09 627 611 120.4
B 0 190 76870 633.61 627 611 120.4
B 5 255 62255 512.18 627 611 120.4
C 15 214 230101 1593.25 623 628 144.0
C 0 10 198689 1375.15 623 628 144.0
C 4 254 99811 688.64 623 628 144.0
D 8 195 1127440 7512.85 613 595 150.0
D 13 249 687354 4578.73 613 595 150.0
D 2 250 130537 866.34 613 595 150.0

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