ASTROSAT CZTI

Data Quality Report

Orbit 34527

Creation date: 2022-02-16T00:54:43.406496
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/AS1A06_005T01_9000004932_34527cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34527cztM0_level2_quad_clean.evt
Size (bytes)555,387,84089,334,720
Size529.7 MB 85.2 MB
Events in quadrant A2,716,266607,666
Events in quadrant B4,558,398584,052
Events in quadrant C2,957,203594,508
Events in quadrant D6,193,943512,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120113
B0173532
C0123622
D0222422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5815250.429923%
B581568011.693895%
C5815380.653482%
D581592115.838349%

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 9491 5817 10 10 0.11% 0.17%
B 9491 5817 456 456 4.80% 7.84%
C 9491 5817 21 21 0.22% 0.36%
D 9491 5817 796 796 8.39% 13.68%

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 9 143 79440 585.22 668 655 134.6
A 10 83 40621 296.87 668 655 134.6
A 13 6 11136 77.85 668 655 134.6
B 5 172 1397239 11532.02 632 614 121.1
B 4 171 389331 3209.66 632 614 121.1
B 0 190 75802 620.83 632 614 121.1
C 15 214 261725 1730.56 648 651 150.9
C 0 10 121547 801.37 648 651 150.9
C 14 67 44350 289.66 648 651 150.9
D 10 118 1579739 10783.22 601 585 146.4
D 7 223 908279 6198.17 601 585 146.4
D 8 195 801189 5466.91 601 585 146.4

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