ASTROSAT CZTI

Data Quality Report

Orbit 34428

Creation date: 2022-02-09T08:45:59.798423
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_082T10_9000004916_34428cztM0_level2.evt modeM0/AS1A05_082T10_9000004916_34428cztM0_level2_quad_clean.evt
Size (bytes)457,545,60056,859,840
Size436.3 MB 54.2 MB
Events in quadrant A2,726,133341,515
Events in quadrant B3,612,899331,977
Events in quadrant C2,960,091342,035
Events in quadrant D4,181,075318,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274
B0276
C0271
D0272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013731
B013617
C013818
D013722

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140242372
B0176293210
C0148312568
D0201793875

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5603140.249866%
B54732855.207382%
C5567100.179630%
D54562494.563783%

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 9418 6185 2 2 0.02% 0.03%
B 9422 6087 181 181 1.92% 2.97%
C 9427 6200 3 3 0.03% 0.05%
D 9405 6076 156 156 1.66% 2.57%

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 7 16 60805 440.56 673 658 136.5
A 10 83 33868 243.25 673 658 136.5
A 9 143 15700 110.18 673 658 136.5
B 5 172 757639 6100.25 638 619 124.1
B 0 190 225544 1812.5 638 619 124.1
B 3 112 29152 229.93 638 619 124.1
C 15 214 233094 1547.28 646 652 150.2
C 14 67 112868 746.98 646 652 150.2
C 0 10 38996 255.24 646 652 150.2
D 8 195 729172 4679.53 626 608 155.7
D 7 80 219405 1405.32 626 608 155.7
D 13 249 202849 1298.98 626 608 155.7

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