ASTROSAT CZTI

Data Quality Report

Orbit 20180228_C03_023T01_9000001930_level2

Creation date: 2025-11-19T19:43:02.258164
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/AS1C03_023T01_9000001930cztM0_level2.fits modeM0/AS1C03_023T01_9000001930cztM0_level2_quad_clean.evt
Size (bytes)661,547,520612,288,000
Size630.9 MB 583.9 MB
Events in quadrant A4,070,3083,624,406
Events in quadrant B3,540,8963,309,837
Events in quadrant C4,081,1263,558,931
Events in quadrant D3,432,8263,146,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01591010
B02324870
C01468090
D02072210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014560
B014560
C014560
D014560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7148816722.338854%
B714891267617.731399%
C714894980.696611%
D7148944146.174376%

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 85061 71484 0 0 0.00% 0.00%
B 85061 70487 0 0 0.00% 0.00%
C 85061 71491 0 0 0.00% 0.00%
D 85061 71479 0 0 0.00% 0.00%

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 0 29 4079 11.75 1060 988 263.1
A 7 110 3283 8.72 1060 988 263.1
A 0 30 3056 7.86 1060 988 263.1
B 2 9 3121 12.0 932 886 186.2
B 14 254 2419 8.23 932 886 186.2
B 3 17 2391 8.08 932 886 186.2
C 12 241 2823 6.46 1079 1000 282.1
C 3 158 2742 6.18 1079 1000 282.1
C 3 126 2699 6.02 1079 1000 282.1
D 6 231 2579 6.38 981 894 264.0
D 3 14 2559 6.31 981 894 264.0
D 7 3 2469 5.96 981 894 264.0

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