ASTROSAT CZTI

Data Quality Report

Orbit 32802

Creation date: 2024-06-27T20:42:11.741717
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/AS1T04_064T01_9000004730_32802cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32802cztM0_level2_quad_clean.evt
Size (bytes)527,299,20075,179,520
Size502.9 MB 71.7 MB
Events in quadrant A2,792,930496,369
Events in quadrant B3,275,109502,277
Events in quadrant C3,972,075478,891
Events in quadrant D5,595,192452,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109793
B0128392
C0147922
D0201322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937400.810209%
B4937891.802714%
C49373617.312133%
D49372685.428398%

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 7060 4938 11 11 0.16% 0.22%
B 7060 4938 55 55 0.78% 1.11%
C 7060 4938 309 309 4.38% 6.26%
D 7060 4938 267 267 3.78% 5.41%

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 14 238 99867 763.59 654 645 129.9
A 15 237 49962 379.53 654 645 129.9
A 10 228 36789 278.16 654 645 129.9
B 5 172 299488 2464.51 649 637 121.3
B 0 219 244015 2007.04 649 637 121.3
B 15 54 79564 650.88 649 637 121.3
C 0 10 1434095 10141.91 617 624 141.3
C 0 207 33091 229.71 617 624 141.3
C 3 233 23873 164.49 617 624 141.3
D 8 195 1957895 13035.13 622 610 150.2
D 2 250 243318 1616.39 622 610 150.2
D 2 249 188988 1254.56 622 610 150.2

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