ASTROSAT CZTI

Data Quality Report

Orbit 18647

Creation date: 2024-06-27T17:52:55.943931
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/AS1A06_003T01_9000002786_18647cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18647cztM0_level2_quad_clean.evt
Size (bytes)584,893,440108,987,840
Size557.8 MB 103.9 MB
Events in quadrant A4,057,216690,668
Events in quadrant B3,905,221705,442
Events in quadrant C3,906,354691,960
Events in quadrant D5,307,833662,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172962
B0169152
C0167982
D0215522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7917911.149425%
B79181602.020712%
C79181782.248042%
D79173254.105090%

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 8927 7919 3 3 0.03% 0.04%
B 8928 7920 9 9 0.10% 0.11%
C 8928 7920 0 0 0.00% 0.00%
D 8927 7919 185 185 2.07% 2.34%

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 0 13 270232 1369.48 969 948 196.6
A 6 16 26489 129.89 969 948 196.6
A 15 191 16716 80.19 969 948 196.6
B 0 230 56846 296.47 972 946 188.6
B 12 111 23351 118.83 972 946 188.6
B 11 111 20148 101.84 972 946 188.6
C 14 238 145422 645.44 948 954 223.8
C 9 221 38928 169.66 948 954 223.8
C 3 233 20479 87.23 948 954 223.8
D 1 52 1261132 5488.73 942 915 229.6
D 7 238 308712 1340.57 942 915 229.6
D 2 152 156772 678.82 942 915 229.6

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