ASTROSAT CZTI

Data Quality Report

Orbit 58605

Creation date: 2026-07-29T11:29:37.531439
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/AS1A14_044T04_9000006592_58605cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58605cztM0_level2_quad_clean.evt
Size (bytes)968,581,44093,006,720
Size923.7 MB 88.7 MB
Events in quadrant A6,038,676699,420
Events in quadrant B7,501,501583,260
Events in quadrant C16,746,312277,931
Events in quadrant D4,933,053686,818

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236671
B0279960
C0554230
D0205880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A817783710.236028%
B8178254431.107850%
C8178538265.810712%
D81782212.702372%

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 8176 8176 677 677 8.28% 8.28%
B 8177 8177 1012 1012 12.38% 12.38%
C 8177 8177 5090 5090 62.25% 62.25%
D 8177 8177 197 197 2.41% 2.41%

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 17 1885180 8411.91 902 876 224.0
A 12 114 140461 623.14 902 876 224.0
A 13 248 123690 548.27 902 876 224.0
B 6 255 4120445 26212.6 720 691 157.2
B 8 234 241988 1535.29 720 691 157.2
B 10 44 50347 315.94 720 691 157.2
C 15 164 9810148 65307.18 547 542 150.2
C 15 217 4385132 29190.29 547 542 150.2
C 13 3 186721 1239.48 547 542 150.2
D 2 249 956697 3757.27 894 855 254.4
D 2 31 98091 382.22 894 855 254.4
D 4 206 90212 351.25 894 855 254.4

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