ASTROSAT CZTI

Data Quality Report

Orbit 36234

Creation date: 2022-06-11T07:41:07.848255
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/AS1A11_080T02_9000005176_36234cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36234cztM0_level2_quad_clean.evt
Size (bytes)465,687,36046,592,640
Size444.1 MB 44.4 MB
Events in quadrant A2,449,753278,021
Events in quadrant B3,416,141271,775
Events in quadrant C2,665,969272,918
Events in quadrant D5,235,026239,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102963
B0133692
C0107652
D0189052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495740.080694%
B49572965.971354%
C4957681.371797%
D495756511.398023%

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 7050 4958 0 0 0.00% 0.00%
B 7050 4958 231 231 3.28% 4.66%
C 7050 4958 43 43 0.61% 0.87%
D 7050 4958 568 568 8.06% 11.46%

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 10 83 173155 1475.52 581 570 117.0
A 13 6 12641 103.2 581 570 117.0
A 9 143 9893 79.71 581 570 117.0
B 5 172 491398 4521.4 568 556 108.6
B 5 236 456395 4198.97 568 556 108.6
B 5 255 110713 1014.71 568 556 108.6
C 0 10 258305 1950.86 564 568 132.1
C 15 214 207943 1569.66 564 568 132.1
C 13 61 3796 24.43 564 568 132.1
D 12 227 1838302 13777.88 544 529 133.4
D 12 235 428848 3211.13 544 529 133.4
D 12 6 237900 1779.58 544 529 133.4

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