ASTROSAT CZTI

Data Quality Report

Orbit 34926

Creation date: 2022-03-14T23:48:41.958780
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/AS1A11_086T01_9000005002_34926cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34926cztM0_level2_quad_clean.evt
Size (bytes)495,576,00090,918,720
Size472.6 MB 86.7 MB
Events in quadrant A2,672,173613,069
Events in quadrant B4,601,068569,987
Events in quadrant C2,973,817605,485
Events in quadrant D4,382,992574,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116143
B0174152
C0121832
D0169252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558640.071608%
B558664311.510920%
C5586641.145721%
D55862374.242750%

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 9023 5588 0 0 0.00% 0.00%
B 9023 5588 517 517 5.73% 9.25%
C 9023 5588 48 48 0.53% 0.86%
D 9023 5588 225 225 2.49% 4.03%

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 64544 480.01 663 649 133.1
A 15 169 18162 131.56 663 649 133.1
A 7 16 11057 78.19 663 649 133.1
B 5 172 1938103 16181.86 621 602 119.7
B 5 255 171295 1425.61 621 602 119.7
B 0 245 23516 191.38 621 602 119.7
C 15 214 234934 1559.93 647 652 150.2
C 0 10 178867 1186.62 647 652 150.2
C 8 111 14248 90.53 647 652 150.2
D 3 13 815181 5263.37 637 620 154.8
D 8 195 697368 4502.11 637 620 154.8
D 2 31 171960 1107.13 637 620 154.8

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