ASTROSAT CZTI

Data Quality Report

Orbit 14767

Creation date: 2024-06-27T16:59:27.409382
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_022T06_9000002182_14767cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14767cztM0_level2_quad_clean.evt
Size (bytes)719,343,36086,057,280
Size686.0 MB 82.1 MB
Events in quadrant A5,563,995531,915
Events in quadrant B3,647,296558,197
Events in quadrant C8,141,795474,716
Events in quadrant D3,944,822538,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213743
B0154752
C0291142
D0167882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72136519.025371%
B7213741.025925%
C7213181625.176764%
D7213811.122972%

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 7729 7215 597 597 7.72% 8.27%
B 7729 7215 3 3 0.04% 0.04%
C 7729 7215 1342 1342 17.36% 18.60%
D 7729 7215 34 34 0.44% 0.47%

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 14 237 2035702 11682.38 853 831 174.2
A 12 189 124001 707.13 853 831 174.2
A 0 23 79063 449.14 853 831 174.2
B 0 190 37304 217.53 880 859 167.5
B 0 229 28753 166.49 880 859 167.5
B 3 209 28027 162.16 880 859 167.5
C 4 254 4691243 27351.07 746 749 171.5
C 3 233 360960 2100.45 746 749 171.5
C 0 207 70174 404.83 746 749 171.5
D 2 136 338351 1595.11 851 829 211.6
D 8 195 143182 672.75 851 829 211.6
D 2 120 64932 302.95 851 829 211.6

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