ASTROSAT CZTI

Data Quality Report

Orbit 34450

Creation date: 2022-02-10T19:25:31.223868
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/AS1A10_058T05_9000004918_34450cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34450cztM0_level2_quad_clean.evt
Size (bytes)302,670,72018,267,840
Size288.6 MB 17.4 MB
Events in quadrant A1,453,36292,385
Events in quadrant B2,721,80092,111
Events in quadrant C1,928,41689,843
Events in quadrant D2,878,36684,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058901
B098901
C077731
D0105231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270380.295967%
B270348517.943026%
C2703391.442841%
D27031686.215316%

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 2703 2703 4 4 0.15% 0.15%
B 2703 2703 347 347 12.84% 12.84%
C 2703 2703 33 33 1.22% 1.22%
D 2703 2703 138 138 5.11% 5.11%

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 18971 251.81 367 361 73.9
A 15 192 7969 102.94 367 361 73.9
A 9 143 6556 83.82 367 361 73.9
B 5 172 1295589 20502.53 335 328 63.2
B 0 190 52000 817.91 335 328 63.2
B 4 232 25756 402.5 335 328 63.2
C 4 254 432646 5362.61 348 351 80.6
C 15 214 115323 1426.22 348 351 80.6
C 0 10 12702 153.21 348 351 80.6
D 8 195 785781 8357.96 346 341 94.0
D 2 249 238453 2533.78 346 341 94.0
D 12 235 179099 1902.18 346 341 94.0

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