ASTROSAT CZTI

Data Quality Report

Orbit 15808

Creation date: 2024-06-27T17:13:50.237615
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/AS1A04_026T01_9000002342_15808cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15808cztM0_level2_quad_clean.evt
Size (bytes)99,002,88026,015,040
Size94.4 MB 24.8 MB
Events in quadrant A831,233167,844
Events in quadrant B724,096173,543
Events in quadrant C697,961171,595
Events in quadrant D643,763166,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034662
B031421
C030701
D030361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1449573.933747%
B1449281.932367%
C1449342.346446%
D144960.414079%

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 2445 1452 23 23 0.94% 1.58%
B 2445 1452 0 0 0.00% 0.00%
C 2445 1452 0 0 0.00% 0.00%
D 2445 1452 1 1 0.04% 0.07%

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 15 239 167006 4510.03 172 168 37.0
A 0 226 1514 36.37 172 168 37.0
A 12 194 1221 28.45 172 168 37.0
B 4 173 15677 424.56 177 172 36.5
B 0 244 5624 149.29 177 172 36.5
B 12 111 4213 110.65 177 172 36.5
C 14 238 26285 622.74 171 172 41.9
C 0 207 1852 40.06 171 172 41.9
C 10 22 1405 29.4 171 172 41.9
D 2 234 4940 112.42 168 163 42.5
D 13 172 2674 59.09 168 163 42.5
D 3 238 2007 43.4 168 163 42.5

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