ASTROSAT CZTI

Data Quality Report

Orbit 37273

Creation date: 2024-06-27T21:37:44.606352
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_103T03_9000005296_37273cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37273cztM0_level2_quad_clean.evt
Size (bytes)419,060,16059,132,160
Size399.6 MB 56.4 MB
Events in quadrant A2,747,843357,878
Events in quadrant B2,691,295366,355
Events in quadrant C3,352,762365,417
Events in quadrant D3,551,291341,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111853
B0110762
C0129732
D0138282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5122140.273331%
B5122230.449043%
C51221833.572823%
D51223166.169465%

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 7095 5123 6 6 0.08% 0.12%
B 7095 5123 8 8 0.11% 0.16%
C 7095 5123 124 124 1.75% 2.42%
D 7095 5123 269 269 3.79% 5.25%

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 263006 2117.15 620 610 123.9
A 13 248 65212 521.24 620 610 123.9
A 9 143 11394 87.01 620 610 123.9
B 0 190 94415 805.08 622 607 116.5
B 0 213 68783 585.1 622 607 116.5
B 5 172 55688 472.72 622 607 116.5
C 14 254 571398 4122.0 609 614 138.5
C 15 214 219307 1579.32 609 614 138.5
C 0 10 184132 1325.3 609 614 138.5
D 10 253 1018242 7098.33 600 584 143.4
D 13 249 111582 774.23 600 584 143.4
D 2 153 43235 297.5 600 584 143.4

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