ASTROSAT CZTI

Data Quality Report

Orbit 35705

Creation date: 2022-09-12T16:21:58.999558
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/AS1A09_142T03_9000005114_35705cztM0_level2.evt modeM0/AS1A09_142T03_9000005114_35705cztM0_level2_quad_clean.evt
Size (bytes)305,398,08048,677,760
Size291.3 MB 46.4 MB
Events in quadrant A2,046,650292,564
Events in quadrant B2,245,641299,003
Events in quadrant C2,267,817295,481
Events in quadrant D2,389,867278,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089091
B095051
C093001
D0100961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A438830.068368%
B4388681.549681%
C4388471.071103%
D43881072.438469%

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 5821 4389 0 0 0.00% 0.00%
B 5821 4389 51 51 0.88% 1.16%
C 5821 4389 43 43 0.74% 0.98%
D 5821 4389 87 87 1.49% 1.98%

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 92180 892.79 503 491 102.7
A 10 255 7448 67.74 503 491 102.7
A 13 6 6421 57.74 503 491 102.7
B 5 255 162116 1667.45 496 484 96.9
B 5 172 111936 1149.78 496 484 96.9
B 12 111 12343 122.34 496 484 96.9
C 15 214 182717 1569.05 492 496 116.1
C 0 10 148793 1276.94 492 496 116.1
C 9 187 7861 63.42 492 496 116.1
D 12 6 296726 2461.55 488 475 120.4
D 13 249 106885 884.16 488 475 120.4
D 7 223 50482 415.51 488 475 120.4

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