ASTROSAT CZTI

Data Quality Report

Orbit 21604

Creation date: 2024-06-27T18:30:06.538455
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_094T01_9000003204_21604cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21604cztM0_level2_quad_clean.evt
Size (bytes)1,048,645,440142,551,360
Size1000.1 MB 135.9 MB
Events in quadrant A5,941,407884,643
Events in quadrant B6,248,266886,988
Events in quadrant C6,006,678866,734
Events in quadrant D12,704,121800,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259305
B0265673
C0259123
D0467213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126961070.842785%
B126961361.071204%
C126961761.386263%
D12696166413.106490%

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 14016 12698 0 0 0.00% 0.00%
B 14016 12698 9 9 0.06% 0.07%
C 14016 12698 0 0 0.00% 0.00%
D 14016 12697 1346 1346 9.60% 10.60%

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 13 254 17102 50.35 1539 1504 309.8
A 3 137 13258 37.94 1539 1504 309.8
A 0 226 13129 37.53 1539 1504 309.8
B 3 64 70427 235.82 1529 1491 292.3
B 0 190 68934 230.71 1529 1491 292.3
B 0 197 44698 147.8 1529 1491 292.3
C 14 238 230274 654.78 1480 1487 349.4
C 13 61 10432 25.6 1480 1487 349.4
C 8 128 4503 8.63 1480 1487 349.4
D 1 52 6695378 19260.79 1432 1390 347.5
D 7 238 146824 418.46 1432 1390 347.5
D 2 136 126481 359.93 1432 1390 347.5

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