ASTROSAT CZTI

Data Quality Report

Orbit 34196

Creation date: 2022-01-24T16:24:39.757448
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/AS1A11_047T15_9000004882_34196cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34196cztM0_level2_quad_clean.evt
Size (bytes)595,108,80073,370,880
Size567.5 MB 70.0 MB
Events in quadrant A2,757,510470,734
Events in quadrant B4,949,393465,676
Events in quadrant C4,028,780454,862
Events in quadrant D5,885,890415,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119783
B0186122
C0156152
D0215262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5934120.202224%
B59345288.897877%
C59341702.864847%
D593483114.004044%

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 7247 5935 2 2 0.03% 0.03%
B 7247 5935 362 362 5.00% 6.10%
C 7247 5935 142 142 1.96% 2.39%
D 7247 5935 651 651 8.98% 10.97%

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 19405 132.32 700 687 141.5
A 9 143 17140 116.31 700 687 141.5
A 13 6 16132 109.18 700 687 141.5
B 5 172 762692 5874.19 672 656 129.7
B 5 31 659527 5078.94 672 656 129.7
B 5 15 429480 3305.61 672 656 129.7
C 0 239 794422 5121.81 666 671 155.0
C 15 214 272086 1751.35 666 671 155.0
C 0 10 257691 1658.47 666 671 155.0
D 8 195 961262 6224.99 625 606 154.3
D 2 250 856689 5547.36 625 606 154.3
D 2 249 665802 4310.43 625 606 154.3

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