ASTROSAT CZTI

Data Quality Report

Orbit 20210627_A10_109T01_9000004492_level2

Creation date: 2021-07-01T17:16:06.028011
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/AS1A10_109T01_9000004492cztM0_level2_bc.evt modeM0/AS1A10_109T01_9000004492cztM0_level2_quad_clean.evt
Size (bytes)12,549,159,3604,080,286,080
Size11.7 GB 3.8 GB
Events in quadrant A61,946,62326,889,278
Events in quadrant B137,120,57626,663,843
Events in quadrant C70,858,90425,899,243
Events in quadrant D91,616,54725,471,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05782210
B08323710
C06243830
D06705110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055580
B055540
C055560
D055620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27269131021.137551%
B27255265352.397708%
C27273291793.365575%
D27266445941.684858%

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 319106 272941 13 13 0.00% 0.00%
B 319106 272809 5 5 0.00% 0.00%
C 319106 272983 127 127 0.04% 0.05%
D 319106 272922 230 230 0.07% 0.08%

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 13 254 450266 126.02 15923 15714 3448.4
A 13 170 392658 109.31 15923 15714 3448.4
A 12 96 98292 23.95 15923 15714 3448.4
B 6 159 73257948 24259.39 15921 15665 3019.1
B 0 183 1178346 385.1 15921 15665 3019.1
B 0 190 709988 229.97 15921 15665 3019.1
C 0 10 6101798 1693.05 15314 15375 3594.9
C 10 22 3781457 1047.6 15314 15375 3594.9
C 15 208 899093 245.82 15314 15375 3594.9
D 8 195 16812187 4690.13 15661 15229 3581.3
D 13 174 11707256 3264.7 15661 15229 3581.3
D 2 250 1074079 295.66 15661 15229 3581.3

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