ASTROSAT CZTI

Data Quality Report

Orbit 50666

Creation date: 2025-02-09T02:02:53.870802
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/AS1T05_241T01_9000006446_50666cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50666cztM0_level2_quad_clean.evt
Size (bytes)521,763,84090,103,680
Size497.6 MB 85.9 MB
Events in quadrant A4,601,878588,861
Events in quadrant B5,263,746595,938
Events in quadrant C4,524,478577,071
Events in quadrant D4,445,162535,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178801
B0197511
C0176022
D0175121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61742514.065436%
B617570711.449393%
C61742213.579527%
D61742834.583738%

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 7299 6175 194 194 2.66% 3.14%
B 7300 6176 523 523 7.16% 8.47%
C 7299 6175 163 163 2.23% 2.64%
D 7299 6175 274 274 3.75% 4.44%

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 9 191 812623 5048.6 654 639 160.8
A 8 38 194573 1205.81 654 639 160.8
A 12 80 192439 1192.54 654 639 160.8
B 5 172 1426110 10498.59 638 617 135.8
B 4 170 610418 4491.11 638 617 135.8
B 5 185 163672 1200.88 638 617 135.8
C 15 231 414527 2303.37 653 646 179.7
C 0 224 369394 2052.19 653 646 179.7
C 13 3 226269 1255.66 653 646 179.7
D 3 12 844115 4753.26 641 619 177.5
D 8 246 380544 2140.95 641 619 177.5
D 10 102 207203 1164.14 641 619 177.5

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