ASTROSAT CZTI

Data Quality Report

Orbit 34316

Creation date: 2022-02-01T19:35:58.007244
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_084T04_9000004896_34316cztM0_level2.evt modeM0/AS1A05_084T04_9000004896_34316cztM0_level2_quad_clean.evt
Size (bytes)611,665,92079,220,160
Size583.3 MB 75.6 MB
Events in quadrant A2,659,885532,730
Events in quadrant B3,692,855524,163
Events in quadrant C2,839,422528,009
Events in quadrant D8,967,047435,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114633
B0145242
C0116702
D0304232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5402330.610885%
B54021502.776749%
C5402270.499815%
D5402172031.840059%

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 7076 5403 20 20 0.28% 0.37%
B 7076 5403 92 92 1.30% 1.70%
C 7076 5403 18 18 0.25% 0.33%
D 7076 5403 1656 1656 23.40% 30.65%

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 9 143 120140 913.47 645 630 130.8
A 10 83 30362 227.26 645 630 130.8
A 13 6 11807 85.43 645 630 130.8
B 5 172 296780 2433.83 636 622 121.7
B 5 31 282289 2314.75 636 622 121.7
B 0 229 201287 1649.07 636 622 121.7
C 15 214 231516 1596.42 623 628 144.6
C 14 254 76412 523.99 623 628 144.6
C 0 10 36033 244.8 623 628 144.6
D 12 227 3766703 24593.0 565 554 153.1
D 8 195 729604 4760.71 565 554 153.1
D 12 235 719374 4693.9 565 554 153.1

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