ASTROSAT CZTI

Data Quality Report

Orbit 35010

Creation date: 2022-06-11T10:49:50.878923
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_010T01_9000005016_35010cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35010cztM0_level2_quad_clean.evt
Size (bytes)982,051,200150,284,160
Size936.6 MB 143.3 MB
Events in quadrant A5,822,998933,342
Events in quadrant B6,419,167952,175
Events in quadrant C6,496,356932,503
Events in quadrant D10,160,508871,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254104
B0271563
C0265043
D0388943

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12471190.152353%
B124711040.833935%
C124711401.122604%
D124714643.720632%

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 15158 12473 1 1 0.01% 0.01%
B 15158 12473 51 51 0.34% 0.41%
C 15158 12473 121 121 0.80% 0.97%
D 15157 12472 389 389 2.57% 3.12%

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 133061 453.14 1450 1421 290.5
A 7 3 39170 129.94 1450 1421 290.5
A 13 254 19946 63.77 1450 1421 290.5
B 5 172 289336 1042.78 1441 1401 276.1
B 0 190 160359 575.68 1441 1401 276.1
B 4 232 102047 364.5 1441 1401 276.1
C 15 214 514914 1569.36 1415 1430 327.2
C 0 10 396931 1208.77 1415 1430 327.2
C 14 67 30105 87.64 1415 1430 327.2
D 8 195 2575502 7583.69 1403 1367 339.4
D 2 250 550358 1617.39 1403 1367 339.4
D 12 233 360755 1058.8 1403 1367 339.4

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