ASTROSAT CZTI

Data Quality Report

Orbit 34483

Creation date: 2022-02-13T01:31:08.641419
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/AS1A10_071T14_9000004924_34483cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34483cztM0_level2_quad_clean.evt
Size (bytes)446,757,12086,304,960
Size426.1 MB 82.3 MB
Events in quadrant A3,254,666563,911
Events in quadrant B2,873,136579,095
Events in quadrant C2,767,674576,131
Events in quadrant D4,282,700531,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131223
B0117562
C0112292
D0162822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51881783.430995%
B51881252.409406%
C5188470.905937%
D51883967.632999%

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 7041 5189 123 123 1.75% 2.37%
B 7041 5189 86 86 1.22% 1.66%
C 7041 5189 37 37 0.53% 0.71%
D 7041 5189 343 343 4.87% 6.61%

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 15 169 841240 6819.68 608 597 123.3
A 10 83 36567 291.81 608 597 123.3
A 9 143 15716 122.65 608 597 123.3
B 5 172 293557 2489.82 608 593 117.7
B 4 232 60966 513.09 608 593 117.7
B 0 229 56478 474.95 608 593 117.7
C 15 214 222342 1585.19 603 609 139.9
C 0 10 147767 1052.04 603 609 139.9
C 15 208 22876 159.19 603 609 139.9
D 7 223 827718 5366.15 582 571 154.1
D 8 195 458075 2968.07 582 571 154.1
D 2 250 187891 1215.25 582 571 154.1

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