ASTROSAT CZTI

Data Quality Report

Orbit 35596

Creation date: 2022-04-29T05:45:04.004502
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/AS1A10_065T04_9000005098_35596cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35596cztM0_level2_quad_clean.evt
Size (bytes)418,766,40055,846,080
Size399.4 MB 53.3 MB
Events in quadrant A2,596,363354,627
Events in quadrant B2,618,567363,932
Events in quadrant C3,132,292334,391
Events in quadrant D4,011,150302,806

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106723
B0107022
C0121782
D0151012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4764671.406381%
B4764921.931150%
C47642174.554996%
D476453811.293031%

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 6916 4765 39 39 0.56% 0.82%
B 6916 4765 60 60 0.87% 1.26%
C 6916 4765 142 142 2.05% 2.98%
D 6916 4765 444 444 6.42% 9.32%

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 246441 2136.46 572 561 115.1
A 10 83 125671 1087.08 572 561 115.1
A 7 16 5703 44.68 572 561 115.1
B 5 172 269550 2462.16 572 559 109.3
B 5 200 62760 569.35 572 559 109.3
B 4 81 18699 166.04 572 559 109.3
C 0 10 543967 4301.65 543 547 126.3
C 9 187 261760 2067.73 543 547 126.3
C 15 214 193073 1524.01 543 547 126.3
D 7 80 1672849 12918.22 523 509 129.5
D 2 250 60634 464.44 523 509 129.5
D 10 118 49967 382.05 523 509 129.5

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