ASTROSAT CZTI

Data Quality Report

Orbit 20180613_A04_075T02_9000002158_level2

Creation date: 2025-11-22T21:02:11.305654
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/AS1A04_075T02_9000002158cztM0_level2.fits modeM0/AS1A04_075T02_9000002158cztM0_level2_quad_clean.evt
Size (bytes)86,129,28091,955,520
Size82.1 MB 87.7 MB
Events in quadrant A513,134556,984
Events in quadrant B496,504554,279
Events in quadrant C497,130519,619
Events in quadrant D441,970493,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223360
B0202140
C0281890
D0202970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9520580.609244%
B9520770.808824%
C9520570.598739%
D9520740.777311%

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 10229 9518 0 0 0.00% 0.00%
B 10229 9518 0 0 0.00% 0.00%
C 10229 9519 0 0 0.00% 0.00%
D 10229 9518 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 14 188 552 12.01 133 125 35.6
A 0 29 505 10.69 133 125 35.6
A 7 110 444 8.97 133 125 35.6
B 2 9 433 11.03 131 124 28.0
B 14 254 377 9.03 131 124 28.0
B 3 80 334 7.5 131 124 28.0
C 3 126 363 6.71 131 122 35.9
C 12 241 358 6.57 131 122 35.9
C 7 111 334 5.9 131 122 35.9
D 4 160 351 6.57 126 114 36.1
D 7 3 343 6.35 126 114 36.1
D 10 189 322 5.77 126 114 36.1

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