ASTROSAT CZTI

Data Quality Report

Orbit 36694

Creation date: 2024-06-27T21:30:21.940040
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/AS1T05_041T01_9000005234_36694cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36694cztM0_level2_quad_clean.evt
Size (bytes)411,324,480110,750,400
Size392.3 MB 105.6 MB
Events in quadrant A2,744,313742,853
Events in quadrant B2,924,653761,747
Events in quadrant C3,212,113758,800
Events in quadrant D3,214,514718,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113603
B0119482
C0126352
D0129892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5321170.319489%
B5321661.240368%
C53211112.086074%
D5321921.728998%

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 7294 5322 3 3 0.04% 0.06%
B 7294 5322 39 39 0.53% 0.73%
C 7294 5322 78 78 1.07% 1.47%
D 7294 5322 64 64 0.88% 1.20%

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 10 83 207369 1612.72 641 630 128.2
A 9 143 51285 395.15 641 630 128.2
A 13 254 8829 63.96 641 630 128.2
B 5 255 193947 1595.74 640 622 121.2
B 4 171 60107 491.0 640 622 121.2
B 15 35 37001 300.27 640 622 121.2
C 0 10 371239 2553.08 641 649 145.2
C 15 214 240740 1654.04 641 649 145.2
C 0 207 87859 600.81 641 649 145.2
D 13 249 218239 1418.37 636 621 153.4
D 12 233 149798 972.29 636 621 153.4
D 13 171 129890 842.54 636 621 153.4

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