ASTROSAT CZTI

Data Quality Report

Orbit 34479

Creation date: 2022-02-12T18:33:44.120434
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_071T13_9000004922_34479cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34479cztM0_level2_quad_clean.evt
Size (bytes)276,638,40025,951,680
Size263.8 MB 24.7 MB
Events in quadrant A1,577,399146,856
Events in quadrant B2,210,482145,116
Events in quadrant C1,825,958144,048
Events in quadrant D2,561,765137,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063701
B083711
C071381
D097431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A296070.236486%
B29602779.358108%
C2960591.993243%
D29601043.513514%

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 2960 2960 0 0 0.00% 0.00%
B 2960 2960 214 214 7.23% 7.23%
C 2960 2960 41 41 1.39% 1.39%
D 2960 2960 68 68 2.30% 2.30%

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 19671 238.45 399 392 80.9
A 13 254 9013 106.63 399 392 80.9
A 15 169 6220 72.08 399 392 80.9
B 5 172 587297 8209.55 373 364 71.5
B 0 189 66178 920.55 373 364 71.5
B 4 232 58323 810.68 373 364 71.5
C 15 214 127502 1440.08 384 388 88.3
C 15 208 102402 1155.73 384 388 88.3
C 0 10 65928 742.51 384 388 88.3
D 8 195 364196 3820.02 386 375 95.2
D 14 52 304768 3196.04 386 375 95.2
D 7 223 110577 1157.09 386 375 95.2

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