ASTROSAT CZTI

Data Quality Report

Orbit 21072

Creation date: 2024-06-27T18:23:08.136220
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/AS1A05_075T05_9000003116_21072cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21072cztM0_level2_quad_clean.evt
Size (bytes)793,212,48084,162,240
Size756.5 MB 80.3 MB
Events in quadrant A3,055,952613,714
Events in quadrant B3,263,925627,898
Events in quadrant C3,033,440598,988
Events in quadrant D14,243,642267,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131681
B0136391
C0130081
D0464961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279380.605192%
B6280600.955414%
C6280631.003185%
D6279473975.473802%

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 7444 6280 3 3 0.04% 0.05%
B 7445 6281 7 7 0.09% 0.11%
C 7445 6281 0 0 0.00% 0.00%
D 7444 6279 4487 4487 60.28% 71.46%

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 12 96 94061 605.7 767 751 154.1
A 13 254 9467 56.58 767 751 154.1
A 0 226 6767 39.05 767 751 154.1
B 0 219 81267 553.12 772 752 145.6
B 3 64 41825 282.16 772 752 145.6
B 0 244 32643 219.09 772 752 145.6
C 14 238 117917 670.35 747 753 174.8
C 13 61 5191 25.39 747 753 174.8
C 10 91 3007 12.9 747 753 174.8
D 1 239 12183846 132684.03 384 373 91.8
D 2 14 276203 3003.92 384 373 91.8
D 14 35 124965 1356.87 384 373 91.8

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