ASTROSAT CZTI

Data Quality Report

Orbit 40506

Creation date: 2024-06-27T22:16:56.206918
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/AS1A12_022T01_9000005540_40506cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40506cztM0_level2_quad_clean.evt
Size (bytes)186,419,52051,920,640
Size177.8 MB 49.5 MB
Events in quadrant A1,635,242365,374
Events in quadrant B1,518,330371,754
Events in quadrant C1,616,087342,594
Events in quadrant D1,888,202272,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067871
B064671
C066951
D076631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A308860.194301%
B308860.194301%
C3088321.036269%
D308855718.037565%

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 3088 3088 2 2 0.06% 0.06%
B 3088 3088 1 1 0.03% 0.03%
C 3088 3088 28 28 0.91% 0.91%
D 3088 3088 72 72 2.33% 2.33%

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 83 273552 3841.61 343 336 71.1
A 12 189 30366 422.24 343 336 71.1
A 11 175 5043 66.18 343 336 71.1
B 3 112 147153 2215.62 340 331 66.3
B 5 255 18940 280.82 340 331 66.3
B 4 171 16294 240.89 340 331 66.3
C 14 254 134949 1733.66 332 334 77.6
C 15 214 132700 1704.7 332 334 77.6
C 9 187 20706 262.36 332 334 77.6
D 2 250 195433 2562.96 304 295 76.1
D 12 191 125052 1638.57 304 295 76.1
D 12 227 106108 1389.76 304 295 76.1

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