ASTROSAT CZTI

Data Quality Report

Orbit 20220217_A05_097T01_9000004936_level2

Creation date: 2022-02-22T09:48:49.194990
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_097T01_9000004936cztM0_level2_bc.evt modeM0/AS1A05_097T01_9000004936cztM0_level2_quad_clean.evt
Size (bytes)1,485,023,040277,012,800
Size1.4 GB 264.2 MB
Events in quadrant A6,370,4021,657,471
Events in quadrant B9,698,1561,625,183
Events in quadrant C7,644,6551,665,085
Events in quadrant D19,387,3021,548,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0574730
B0727720
C0603480
D01028050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05600
C05600
D05600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01050
C01050
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27538690.250563%
B2753815655.683056%
C27538570.206987%
D2753814655.319922%

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 38177 27543 6 6 0.02% 0.02%
B 38177 27538 86 86 0.23% 0.31%
C 38177 27539 8 8 0.02% 0.03%
D 38177 27538 185 185 0.48% 0.67%

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 9 143 229783 689.55 1526 1505 331.1
A 10 83 135475 404.68 1526 1505 331.1
A 13 6 47959 140.32 1526 1505 331.1
B 5 172 3164256 11029.51 1487 1457 286.8
B 0 245 206186 713.94 1487 1457 286.8
B 15 85 87568 300.29 1487 1457 286.8
C 15 214 1119377 3341.18 1492 1481 334.6
C 14 67 523719 1560.87 1492 1481 334.6
C 0 10 132405 391.31 1492 1481 334.6
D 8 195 8838826 25336.96 1477 1430 348.8
D 2 250 1389404 3979.34 1477 1430 348.8
D 12 17 935777 2678.79 1477 1430 348.8

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