ASTROSAT CZTI

Data Quality Report

Orbit 21542

Creation date: 2024-06-27T18:29:24.847621
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/AS1T03_138T07_9000003186_21542cztM0_level2.evt modeM0/AS1T03_138T07_9000003186_21542cztM0_level2_quad_clean.evt
Size (bytes)343,284,48072,120,960
Size327.4 MB 68.8 MB
Events in quadrant A2,235,356472,970
Events in quadrant B2,318,594480,383
Events in quadrant C2,262,051452,904
Events in quadrant D3,252,380439,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098111
B099671
C097771
D0128231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4815450.934579%
B4815541.121495%
C4816601.245847%
D4816711.474252%

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 5515 4816 3 3 0.05% 0.06%
B 5515 4816 4 4 0.07% 0.08%
C 5516 4817 0 0 0.00% 0.00%
D 5516 4817 33 33 0.60% 0.69%

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 17496 145.68 574 561 116.2
A 13 254 7595 60.51 574 561 116.2
A 0 226 4968 37.91 574 561 116.2
B 0 230 37868 338.48 570 557 110.2
B 4 190 16668 146.16 570 557 110.2
B 12 111 13319 115.77 570 557 110.2
C 14 238 87544 674.16 548 551 129.0
C 8 128 11479 84.68 548 551 129.0
C 8 112 5458 38.02 548 551 129.0
D 1 52 703267 5268.63 555 541 133.4
D 14 35 352686 2640.18 555 541 133.4
D 13 153 34073 251.4 555 541 133.4

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