ASTROSAT CZTI

Data Quality Report

Orbit 35259

Creation date: 2022-04-06T11:08:15.049456
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_9000005054_35259cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35259cztM0_level2_quad_clean.evt
Size (bytes)647,539,20050,140,800
Size617.5 MB 47.8 MB
Events in quadrant A2,719,549310,419
Events in quadrant B4,472,439298,807
Events in quadrant C3,015,459305,878
Events in quadrant D9,033,590219,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113383
B0168832
C0119722
D0305602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5465100.182983%
B546556410.320220%
C5465581.061299%
D5465251646.038426%

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 7259 5466 0 0 0.00% 0.00%
B 7259 5466 385 385 5.30% 7.04%
C 7259 5466 44 44 0.61% 0.80%
D 7259 5466 2290 2290 31.55% 41.90%

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 98788 723.75 670 657 135.6
A 13 254 9373 64.28 670 657 135.6
A 13 6 7970 53.94 670 657 135.6
B 5 236 1120553 9217.23 639 625 121.5
B 5 172 632494 5200.41 639 625 121.5
B 3 112 108404 887.04 639 625 121.5
C 15 214 234460 1562.54 645 650 149.6
C 0 10 232707 1550.83 645 650 149.6
C 14 67 17563 113.03 645 650 149.6
D 7 80 5483881 41815.38 530 514 131.1
D 12 235 599054 4564.38 530 514 131.1
D 10 118 349041 2657.82 530 514 131.1

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