ASTROSAT CZTI

Data Quality Report

Orbit 41825

Creation date: 2024-06-27T22:33:16.123284
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/AS1A12_097T03_9000005706_41825cztM0_level2.fits modeM0/AS1A12_097T03_9000005706_41825cztM0_level2_quad_clean.evt
Size (bytes)329,892,48089,055,360
Size314.6 MB 84.9 MB
Events in quadrant A3,092,306611,321
Events in quadrant B2,495,939618,340
Events in quadrant C3,289,640549,364
Events in quadrant D2,910,512537,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123872
B0112692
C0129812
D0121922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5428470.865881%
B5428310.571113%
C54282544.679440%
D5428380.700074%

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 7341 5429 47 47 0.64% 0.87%
B 7341 5429 18 18 0.25% 0.33%
C 7341 5429 249 249 3.39% 4.59%
D 7341 5429 27 27 0.37% 0.50%

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 599382 4967.17 590 579 120.6
A 6 10 103921 857.24 590 579 120.6
A 12 189 62900 516.96 590 579 120.6
B 3 112 87957 775.05 585 571 112.7
B 0 186 27373 237.71 585 571 112.7
B 0 183 24777 214.69 585 571 112.7
C 0 10 890850 6886.34 551 552 129.3
C 15 214 217411 1677.38 551 552 129.3
C 15 159 16984 127.1 551 552 129.3
D 12 79 237968 1696.45 576 561 139.9
D 13 249 181768 1294.86 576 561 139.9
D 5 222 112403 799.2 576 561 139.9

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