ASTROSAT CZTI

Data Quality Report

Orbit 12966

Creation date: 2024-06-27T16:34:27.966782
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/AS1G08_033T01_9000001906_12966cztM0_level2.evt modeM0/AS1G08_033T01_9000001906_12966cztM0_level2_quad_clean.evt
Size (bytes)251,305,92061,752,960
Size239.7 MB 58.9 MB
Events in quadrant A1,648,081419,121
Events in quadrant B2,574,737394,303
Events in quadrant C1,477,623425,595
Events in quadrant D1,686,253398,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070731
B098691
C066271
D073101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3276190.579976%
B327635010.683761%
C327620.061050%
D3276150.457875%

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 3278 3278 7 7 0.21% 0.21%
B 3278 3278 247 247 7.54% 7.54%
C 3278 3278 0 0 0.00% 0.00%
D 3278 3278 15 15 0.46% 0.46%

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 12 189 85198 1102.91 374 366 76.9
A 1 162 33989 437.14 374 366 76.9
A 15 223 33664 432.91 374 366 76.9
B 4 239 615358 9092.12 353 345 67.6
B 3 64 392482 5797.21 353 345 67.6
B 0 85 141651 2089.01 353 345 67.6
C 13 61 2621 25.19 378 381 88.9
C 14 234 1229 9.54 378 381 88.9
C 8 222 1036 7.37 378 381 88.9
D 8 195 162414 1812.26 369 360 89.4
D 1 52 87792 977.76 369 360 89.4
D 13 122 15118 165.04 369 360 89.4

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