ASTROSAT CZTI

Data Quality Report

Orbit 35977

Creation date: 2022-07-18T23:35:28.872564
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/AS1A11_050T19_9000005156_35977cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35977cztM0_level2_quad_clean.evt
Size (bytes)932,307,84088,162,560
Size889.1 MB 84.1 MB
Events in quadrant A2,754,173721,856
Events in quadrant B15,439,396206,656
Events in quadrant C3,740,817690,474
Events in quadrant D5,906,309638,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119992
B0498491
C0149091
D0215781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584560.102652%
B58455845100.000000%
C58452053.507271%
D584572012.318221%

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 7129 5846 1 1 0.01% 0.02%
B 7128 5844 5736 5736 80.47% 98.15%
C 7129 5846 146 146 2.05% 2.50%
D 7129 5846 655 655 9.19% 11.20%

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 155503 1176.88 657 644 131.6
A 15 169 35198 262.6 657 644 131.6
A 7 3 14992 109.04 657 644 131.6
B 5 31 7029793 157463.42 225 219 44.6
B 5 15 5771839 129285.08 225 219 44.6
B 5 14 1332629 29846.17 225 219 44.6
C 9 187 839190 5770.73 624 625 145.3
C 15 214 238411 1636.36 624 625 145.3
C 0 207 140919 965.46 624 625 145.3
D 1 52 1601204 10686.91 609 591 149.8
D 12 17 1372157 9157.62 609 591 149.8
D 8 195 177104 1178.53 609 591 149.8

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