ASTROSAT CZTI

Data Quality Report

Orbit 12364

Creation date: 2024-06-27T16:26:08.882770
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/AS1A04_130T04_9000001832_12364cztM0_level2.evt modeM0/AS1A04_130T04_9000001832_12364cztM0_level2_quad_clean.evt
Size (bytes)559,491,84081,832,320
Size533.6 MB 78.0 MB
Events in quadrant A4,126,769498,904
Events in quadrant B3,874,663507,163
Events in quadrant C3,576,532502,622
Events in quadrant D4,869,089458,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170043
B0162182
C0157502
D0194302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73271842.511260%
B73271922.620445%
C73271301.774260%
D73275307.233520%

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 7838 7328 1 1 0.01% 0.01%
B 7838 7329 28 28 0.36% 0.38%
C 7838 7329 31 31 0.40% 0.42%
D 7838 7329 423 423 5.40% 5.77%

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 1 162 214506 1182.46 881 862 180.7
A 13 251 130950 720.0 881 862 180.7
A 1 178 124129 682.25 881 862 180.7
B 4 239 240931 1421.72 879 858 168.9
B 10 245 79316 464.63 879 858 168.9
B 0 228 20472 116.15 879 858 168.9
C 15 208 249602 1257.36 851 855 197.8
C 0 207 7411 33.14 851 855 197.8
C 13 61 6435 28.21 851 855 197.8
D 1 52 1435723 7143.02 832 806 200.9
D 14 34 68681 337.88 832 806 200.9
D 13 104 46675 228.34 832 806 200.9

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