ASTROSAT CZTI

Data Quality Report

Orbit 20220508_A09_029T07_9000005128_level2

Creation date: 2022-05-14T11:27:08.509222
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/AS1A09_029T07_9000005128cztM0_level2_bc.evt modeM0/AS1A09_029T07_9000005128cztM0_level2_quad_clean.evt
Size (bytes)1,767,372,480576,048,960
Size1.6 GB 549.4 MB
Events in quadrant A9,874,3573,690,536
Events in quadrant B12,327,7973,711,420
Events in quadrant C11,650,6193,631,694
Events in quadrant D16,676,0913,396,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0908240
B01013260
C0945330
D01176950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439631520.345745%
B439638171.858381%
C439634080.928053%
D4396317844.057958%

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 58297 43971 0 0 0.00% 0.00%
B 58297 43964 56 56 0.10% 0.13%
C 58297 43963 64 64 0.11% 0.15%
D 58297 43960 157 157 0.27% 0.36%

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 923227 1875.62 2183 2144 491.1
A 15 169 178514 359.15 2183 2144 491.1
A 7 48 101802 202.94 2183 2144 491.1
B 5 172 2581036 5841.31 2180 2131 441.5
B 0 189 409607 922.95 2180 2131 441.5
B 5 255 361078 813.03 2180 2131 441.5
C 15 214 1746935 3598.99 2101 2073 484.8
C 0 10 630487 1296.18 2101 2073 484.8
C 1 23 502647 1032.49 2101 2073 484.8
D 14 52 4424400 8857.3 2098 2029 499.3
D 13 249 1111680 2222.45 2098 2029 499.3
D 1 52 538845 1075.16 2098 2029 499.3

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