ASTROSAT CZTI

Data Quality Report

Orbit 19418

Creation date: 2024-06-27T18:02:36.164236
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_226T09_9000002884_19418cztM0_level2.evt modeM0/AS1A05_226T09_9000002884_19418cztM0_level2_quad_clean.evt
Size (bytes)1,303,344,000160,862,400
Size1.2 GB 153.4 MB
Events in quadrant A6,251,1011,094,295
Events in quadrant B6,691,4941,089,137
Events in quadrant C6,392,3571,031,117
Events in quadrant D19,235,172733,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272633
B0284413
C0274624
D0663343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13353520.389426%
B133541361.018421%
C133531030.771362%
D13353555241.578671%

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 15023 13355 5 5 0.03% 0.04%
B 15024 13357 39 39 0.26% 0.29%
C 15023 13355 0 0 0.00% 0.00%
D 15023 13355 4637 4637 30.87% 34.72%

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 12 96 25159 72.88 1608 1576 323.6
A 11 29 23511 67.79 1608 1576 323.6
A 13 254 21134 60.44 1608 1576 323.6
B 7 220 289510 936.97 1595 1553 307.3
B 0 230 48597 153.07 1595 1553 307.3
B 12 111 37486 116.92 1595 1553 307.3
C 14 238 238032 661.05 1523 1532 357.8
C 3 233 168899 467.81 1523 1532 357.8
C 9 221 19516 50.27 1523 1532 357.8
D 1 52 7967863 27220.58 1208 1175 292.7
D 7 238 6629059 22646.15 1208 1175 292.7
D 2 234 40995 136.06 1208 1175 292.7

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