ASTROSAT CZTI

Data Quality Report

Orbit 35622

Creation date: 2022-05-06T10:55:12.063700
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/AS1T05_028T01_9000005100_35622cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35622cztM0_level2_quad_clean.evt
Size (bytes)442,889,28079,940,160
Size422.4 MB 76.2 MB
Events in quadrant A2,599,136528,103
Events in quadrant B3,636,933529,730
Events in quadrant C3,267,605522,717
Events in quadrant D3,564,241484,125

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108993
B0140832
C0127002
D0140202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508480.157356%
B50843206.294256%
C50841843.619197%
D50842765.428796%

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 6997 5085 1 1 0.01% 0.02%
B 6997 5085 210 210 3.00% 4.13%
C 6997 5085 138 138 1.97% 2.71%
D 6997 5085 207 207 2.96% 4.07%

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 142648 1124.96 627 615 126.3
A 15 169 18454 141.29 627 615 126.3
A 7 3 9843 73.09 627 615 126.3
B 5 172 933030 8088.74 610 595 115.3
B 0 190 116413 1004.7 610 595 115.3
B 0 155 70845 609.41 610 595 115.3
C 0 10 420633 3027.26 600 606 138.7
C 15 214 208975 1501.78 600 606 138.7
C 1 23 165257 1186.69 600 606 138.7
D 7 80 432441 3017.9 590 576 143.1
D 10 118 375395 2619.26 590 576 143.1
D 12 17 159464 1110.32 590 576 143.1

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