ASTROSAT CZTI

Data Quality Report

Orbit 35685

Creation date: 2022-05-05T06:04:26.112640
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_029T04_9000005110_35685cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35685cztM0_level2_quad_clean.evt
Size (bytes)399,513,60057,467,520
Size381.0 MB 54.8 MB
Events in quadrant A2,496,417346,225
Events in quadrant B3,229,887347,837
Events in quadrant C2,643,394343,607
Events in quadrant D3,366,282328,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109093
B0130862
C0110962
D0136472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533640.074963%
B53362043.823088%
C5336150.281109%
D53361282.398801%

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 7098 5337 0 0 0.00% 0.00%
B 7098 5337 145 145 2.04% 2.72%
C 7098 5337 16 16 0.23% 0.30%
D 7098 5337 118 118 1.66% 2.21%

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 140102 1133.91 605 593 123.0
A 13 6 14902 116.3 605 593 123.0
A 3 137 6247 45.96 605 593 123.0
B 5 172 597174 5128.47 596 581 116.3
B 5 255 108838 930.6 596 581 116.3
B 0 246 55211 469.61 596 581 116.3
C 15 214 226147 1631.34 588 591 138.3
C 0 10 115259 829.34 588 591 138.3
C 15 159 6766 44.66 588 591 138.3
D 13 249 674145 4705.72 580 562 143.1
D 2 31 277414 1934.12 580 562 143.1
D 10 199 52200 360.75 580 562 143.1

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