ASTROSAT CZTI

Data Quality Report

Orbit 18410

Creation date: 2024-06-27T17:49:24.657725
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/AS1A05_227T06_9000002730_18410cztM0_level2.evt modeM0/AS1A05_227T06_9000002730_18410cztM0_level2_quad_clean.evt
Size (bytes)293,846,40054,253,440
Size280.2 MB 51.7 MB
Events in quadrant A1,985,132348,098
Events in quadrant B2,445,172357,246
Events in quadrant C1,963,591337,276
Events in quadrant D2,241,082326,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082311
B097162
C081321
D090961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3877120.309518%
B3876511.315789%
C3876220.567595%
D3876421.083591%

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 5212 3878 4 4 0.08% 0.10%
B 5211 3877 33 33 0.63% 0.85%
C 5211 3877 0 0 0.00% 0.00%
D 5211 3877 33 33 0.63% 0.85%

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 4 2 38858 375.94 500 488 102.1
A 15 174 23762 228.03 500 488 102.1
A 0 226 4572 40.01 500 488 102.1
B 10 245 416110 4343.33 501 489 95.7
B 0 189 35500 365.87 501 489 95.7
B 0 197 11460 114.65 501 489 95.7
C 14 238 75665 665.05 479 483 113.0
C 3 233 11599 98.33 479 483 113.0
C 8 128 5562 44.93 479 483 113.0
D 12 110 177944 1522.09 481 467 116.6
D 1 52 77355 659.41 481 467 116.6
D 8 230 66367 565.17 481 467 116.6

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