ASTROSAT CZTI

Data Quality Report

Orbit 18127

Creation date: 2024-06-27T17:45:30.705689
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_186T01_9000002692_18127cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18127cztM0_level2_quad_clean.evt
Size (bytes)333,725,76053,075,520
Size318.3 MB 50.6 MB
Events in quadrant A2,229,329329,598
Events in quadrant B2,377,266335,042
Events in quadrant C2,241,663317,909
Events in quadrant D2,952,197308,136

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094892
B098952
C094532
D0118362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44881072.384135%
B44881292.874332%
C44881062.361854%
D44881433.186275%

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 4688 4490 0 0 0.00% 0.00%
B 4688 4490 7 7 0.15% 0.16%
C 4688 4490 0 0 0.00% 0.00%
D 4688 4490 54 54 1.15% 1.20%

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 4 2 5405 40.75 577 564 118.8
A 0 226 5020 37.51 577 564 118.8
A 15 174 4487 33.02 577 564 118.8
B 7 220 44297 389.59 572 557 112.3
B 4 216 29477 257.59 572 557 112.3
B 0 189 16167 139.04 572 557 112.3
C 14 238 84043 643.32 545 548 129.8
C 5 218 9163 66.38 545 548 129.8
C 8 128 8271 59.5 545 548 129.8
D 11 176 583952 4248.21 553 536 137.3
D 7 238 126804 919.44 553 536 137.3
D 9 64 46260 332.94 553 536 137.3

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