ASTROSAT CZTI

Data Quality Report

Orbit 29070

Creation date: 2024-06-27T19:59:57.356180
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/AS1A10_097T04_9000004170_29070cztM0_level2.evt modeM0/AS1A10_097T04_9000004170_29070cztM0_level2_quad_clean.evt
Size (bytes)673,459,200125,651,520
Size642.3 MB 119.8 MB
Events in quadrant A4,083,354827,130
Events in quadrant B4,323,777843,237
Events in quadrant C4,260,434798,619
Events in quadrant D7,151,347744,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177571
B0183561
C0179561
D0271351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85171551.819890%
B85183153.698051%
C85183684.320263%
D85188269.697112%

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 8972 8517 0 0 0.00% 0.00%
B 8973 8518 24 24 0.27% 0.28%
C 8973 8518 2 2 0.02% 0.02%
D 8973 8519 587 587 6.54% 6.89%

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 13 254 14155 61.44 1058 1032 213.6
A 3 137 11142 47.34 1058 1032 213.6
A 0 226 9008 37.35 1058 1032 213.6
B 10 246 138254 673.93 1049 1019 203.6
B 15 222 39929 191.08 1049 1019 203.6
B 12 111 26463 124.95 1049 1019 203.6
C 14 238 162310 669.31 1020 1025 241.0
C 3 233 63436 259.0 1020 1025 241.0
C 2 16 33781 135.93 1020 1025 241.0
D 1 52 2154455 9068.63 990 959 237.5
D 8 195 1036558 4361.03 990 959 237.5
D 7 238 150037 627.79 990 959 237.5

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