ASTROSAT CZTI

Data Quality Report

Orbit 04017

Creation date: 2024-06-27T14:36:22.932783
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/AS1G05_173T01_9000000514_04017cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04017cztM0_level2_quad_clean.evt
Size (bytes)764,334,720121,538,880
Size728.9 MB 115.9 MB
Events in quadrant A6,023,329721,888
Events in quadrant B5,548,482727,047
Events in quadrant C5,057,768727,955
Events in quadrant D5,735,900704,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02598045
B02446038
C02362439
D02546438

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02362
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115423152.729163%
B115381841.594730%
C11537760.658750%
D115421531.325593%

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 12710 11557 128 128 1.01% 1.11%
B 12710 11556 41 41 0.32% 0.35%
C 12710 11557 2 2 0.02% 0.02%
D 12711 11558 44 44 0.35% 0.38%

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 0 50 609718 2253.05 1313 1280 270.1
A 0 118 281745 1038.56 1313 1280 270.1
A 0 226 40076 143.66 1313 1280 270.1
B 14 167 219939 849.33 1323 1292 257.4
B 4 81 99466 381.36 1323 1292 257.4
B 15 204 51176 193.77 1323 1292 257.4
C 8 128 18341 57.7 1275 1279 295.7
C 9 144 15868 49.33 1275 1279 295.7
C 10 65 12464 37.82 1275 1279 295.7
D 2 232 252242 811.09 1275 1238 309.5
D 9 82 203711 654.27 1275 1238 309.5
D 10 246 140583 450.28 1275 1238 309.5

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