ASTROSAT CZTI

Data Quality Report

Orbit 34831

Creation date: 2022-03-08T13:58:17.182485
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/AS1C07_005T01_9000004992_34831cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34831cztM0_level2_quad_clean.evt
Size (bytes)765,578,88085,633,920
Size730.1 MB 81.7 MB
Events in quadrant A2,544,607678,672
Events in quadrant B13,938,408220,906
Events in quadrant C2,807,164679,460
Events in quadrant D3,536,662640,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108872
B0450191
C0113891
D0139271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5302120.226330%
B53025302100.000000%
C5302651.225952%
D5302881.659751%

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 6974 5303 5 5 0.07% 0.09%
B 6973 5301 5243 5243 75.19% 98.91%
C 6974 5303 55 55 0.79% 1.04%
D 6974 5303 94 94 1.35% 1.77%

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 15 169 46645 372.01 612 599 123.8
A 10 83 39557 314.75 612 599 123.8
A 13 6 30783 243.86 612 599 123.8
B 5 14 4249878 97832.74 220 214 43.4
B 5 31 4211841 96957.08 220 214 43.4
B 5 15 4203927 96774.89 220 214 43.4
C 15 214 244990 1793.16 591 594 136.3
C 0 10 159464 1165.64 591 594 136.3
C 8 111 30465 219.17 591 594 136.3
D 8 195 736446 5090.64 591 576 144.6
D 2 250 129372 890.99 591 576 144.6
D 13 249 120925 832.56 591 576 144.6

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