ASTROSAT CZTI

Data Quality Report

Orbit 20220327_A11_047T09_9000005028_level2

Creation date: 2022-04-05T13:31:00.973966
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_047T09_9000005028cztM0_level2_bc.evt modeM0/AS1A11_047T09_9000005028cztM0_level2_quad_clean.evt
Size (bytes)5,346,918,720970,632,000
Size5.0 GB 925.7 MB
Events in quadrant A45,620,0495,451,269
Events in quadrant B24,877,6016,453,587
Events in quadrant C23,315,9476,361,846
Events in quadrant D62,707,6435,658,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016280
B016280
C016280
D016280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02830
B02830
C02830
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03152530
B01945110
C01784440
D03205220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A797092044125.644532%
B7970920972.630820%
C797098291.040033%
D79709824910.348894%

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 112587 79724 1756 1756 1.56% 2.20%
B 112587 79709 232 232 0.21% 0.29%
C 112587 79710 116 116 0.10% 0.15%
D 112587 79708 1484 1484 1.32% 1.86%

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 15 169 30453763 38249.05 3615 3567 796.1
A 10 83 801828 1002.71 3615 3567 796.1
A 13 6 171852 211.39 3615 3567 796.1
B 5 172 4310342 5249.44 4190 4106 820.3
B 5 236 1236703 1502.58 4190 4106 820.3
B 0 190 858998 1042.14 4190 4106 820.3
C 15 214 3153399 3398.43 4095 4077 926.7
C 0 10 2099843 2261.54 4095 4077 926.7
C 14 67 915457 983.47 4095 4077 926.7
D 8 195 31039309 32273.79 3992 3866 961.6
D 2 250 3292460 3419.81 3992 3866 961.6
D 13 249 1760365 1826.58 3992 3866 961.6

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