ASTROSAT CZTI

Data Quality Report

Orbit 27158

Creation date: 2024-06-27T19:37:07.056522
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_245T01_9000003916_27158cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27158cztM0_level2_quad_clean.evt
Size (bytes)516,303,36087,575,040
Size492.4 MB 83.5 MB
Events in quadrant A3,613,772549,510
Events in quadrant B3,822,551558,566
Events in quadrant C3,310,021539,729
Events in quadrant D4,420,331521,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150180
B0157060
C0141730
D0177260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6924390.563258%
B6924761.097631%
C6924520.751011%
D69241151.660890%

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 7544 6925 10 10 0.13% 0.14%
B 7544 6925 17 17 0.23% 0.25%
C 7544 6925 0 0 0.00% 0.00%
D 7544 6925 82 82 1.09% 1.18%

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 0 13 213938 1244.28 850 833 171.3
A 15 174 72457 418.2 850 833 171.3
A 13 248 15904 87.99 850 833 171.3
B 15 33 168156 1029.24 850 829 162.6
B 3 112 121541 742.51 850 829 162.6
B 5 172 48523 293.37 850 829 162.6
C 14 238 129728 669.24 814 816 192.6
C 13 61 5665 25.17 814 816 192.6
C 15 208 5207 22.8 814 816 192.6
D 1 52 763842 3606.49 808 793 211.6
D 2 250 194445 915.28 808 793 211.6
D 13 172 136364 640.77 808 793 211.6

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