ASTROSAT CZTI

Data Quality Report

Orbit 33673

Creation date: 2024-06-27T20:51:21.856487
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_076T01_9000004810_33673cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33673cztM0_level2_quad_clean.evt
Size (bytes)838,967,04065,963,520
Size800.1 MB 62.9 MB
Events in quadrant A12,289,87245,612
Events in quadrant B3,904,766517,030
Events in quadrant C3,424,442529,411
Events in quadrant D5,398,183498,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404513
B0154772
C0138332
D0202022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5779576399.723135%
B57793626.264060%
C5779761.315106%
D57791041.799619%

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 7360 5778 4323 4323 58.74% 74.82%
B 7361 5780 313 313 4.25% 5.42%
C 7361 5780 71 71 0.96% 1.23%
D 7361 5780 83 83 1.13% 1.44%

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 15 169 11351773 688126.86 74 72 16.5
A 15 237 647434 39242.33 74 72 16.5
A 13 6 1473 84.93 74 72 16.5
B 5 172 1072951 8488.3 654 638 126.3
B 0 219 60705 475.48 654 638 126.3
B 5 255 55133 431.38 654 638 126.3
C 3 233 273576 1813.24 653 659 150.5
C 0 10 272552 1806.43 653 659 150.5
C 15 214 268570 1779.98 653 659 150.5
D 1 52 1491805 8479.74 643 630 175.9
D 8 195 938717 5334.54 643 630 175.9
D 13 249 99727 563.53 643 630 175.9

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