ASTROSAT CZTI

Data Quality Report

Orbit 36392

Creation date: 2022-06-23T13:39:04.911371
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/AS1T04_084T01_9000005198_36392cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36392cztM0_level2_quad_clean.evt
Size (bytes)438,912,00057,360,960
Size418.6 MB 54.7 MB
Events in quadrant A2,740,537362,224
Events in quadrant B4,051,782339,779
Events in quadrant C2,793,569353,016
Events in quadrant D3,368,751332,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111363
B0153192
C0109352
D0130872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4982150.301084%
B49823617.246086%
C4982611.224408%
D49821723.452429%

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 7104 4983 1 1 0.01% 0.02%
B 7104 4983 273 273 3.84% 5.48%
C 7104 4983 43 43 0.61% 0.86%
D 7104 4983 152 152 2.14% 3.05%

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 183733 1425.21 642 632 128.5
A 15 223 59724 459.96 642 632 128.5
A 13 254 8936 64.64 642 632 128.5
B 5 172 1191589 10080.4 622 609 118.1
B 0 189 141760 1194.7 622 609 118.1
B 4 171 79572 668.34 622 609 118.1
C 15 214 216257 1525.42 615 622 141.4
C 0 10 177652 1252.32 615 622 141.4
C 13 61 4052 24.26 615 622 141.4
D 12 6 326935 2210.85 613 598 147.6
D 2 249 253664 1714.45 613 598 147.6
D 13 249 105148 708.3 613 598 147.6

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