ASTROSAT CZTI

Data Quality Report

Orbit 20220524_A11_050T19_9000005156_level2

Creation date: 2022-05-28T16:29:05.035538
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_050T19_9000005156cztM0_level2_bc.evt modeM0/AS1A11_050T19_9000005156cztM0_level2_quad_clean.evt
Size (bytes)2,279,378,880835,908,480
Size2.1 GB 797.2 MB
Events in quadrant A10,095,0855,791,688
Events in quadrant B12,815,6985,756,308
Events in quadrant C20,543,5195,462,623
Events in quadrant D22,551,9275,257,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910730
B01034930
C01300060
D01422910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09120
B09120
C09120
D09100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44412570.128344%
B444248591.933639%
C44412454610.235972%
D4441241969.447897%

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 59985 44461 0 0 0.00% 0.00%
B 59984 44450 63 63 0.11% 0.14%
C 59984 44432 1345 1345 2.24% 3.03%
D 59984 44437 563 563 0.94% 1.27%

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 1053181 2050.84 2315 2285 512.4
A 13 254 66459 125.24 2315 2285 512.4
A 13 6 47635 88.5 2315 2285 512.4
B 5 172 2010789 4407.73 2293 2240 455.7
B 4 171 629741 1377.04 2293 2240 455.7
B 5 255 466769 1019.4 2293 2240 455.7
C 9 187 7092461 14146.25 2168 2155 501.2
C 0 207 2727991 5438.46 2168 2155 501.2
C 15 214 1669678 3326.96 2168 2155 501.2
D 12 227 4154438 7937.2 2203 2143 523.1
D 12 235 3262035 6231.35 2203 2143 523.1
D 1 52 2176872 4157.04 2203 2143 523.1

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