ASTROSAT CZTI

Data Quality Report

Orbit 19777

Creation date: 2024-06-27T18:07:14.271887
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_155T04_9000002956_19777cztM0_level2.evt modeM0/AS1A05_155T04_9000002956_19777cztM0_level2_quad_clean.evt
Size (bytes)559,618,56087,595,200
Size533.7 MB 83.5 MB
Events in quadrant A3,974,236530,538
Events in quadrant B3,852,820543,249
Events in quadrant C4,384,086519,409
Events in quadrant D4,205,922515,149

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168912
B0164762
C0179072
D0178002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78253995.099042%
B78254125.265176%
C78254405.623003%
D78243724.754601%

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 8230 7827 17 17 0.21% 0.22%
B 8230 7826 1 1 0.01% 0.01%
C 8230 7827 52 52 0.63% 0.66%
D 8229 7825 73 73 0.89% 0.93%

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 132742 671.03 970 949 196.4
A 0 23 48989 244.6 970 949 196.4
A 6 16 23061 112.58 970 949 196.4
B 4 216 33586 170.75 969 938 191.2
B 12 111 23788 119.51 969 938 191.2
B 11 111 21250 106.23 969 938 191.2
C 3 233 573807 2606.18 928 931 219.8
C 14 238 140581 635.31 928 931 219.8
C 7 247 36310 160.95 928 931 219.8
D 1 52 589992 2546.14 945 913 231.4
D 2 234 33370 140.29 945 913 231.4
D 7 96 18304 75.17 945 913 231.4

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