ASTROSAT CZTI

Data Quality Report

Orbit 25196

Creation date: 2024-06-27T19:14:57.290673
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/AS1A07_027T01_9000003690_25196cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25196cztM0_level2_quad_clean.evt
Size (bytes)462,389,76095,555,520
Size441.0 MB 91.1 MB
Events in quadrant A3,184,045625,440
Events in quadrant B3,132,010631,576
Events in quadrant C3,193,239601,081
Events in quadrant D4,062,627592,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132980
B0132590
C0134710
D0162090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358390.613400%
B6359450.707658%
C6359881.383865%
D63591271.997169%

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 7423 6359 0 0 0.00% 0.00%
B 7424 6360 10 10 0.13% 0.16%
C 7424 6360 21 21 0.28% 0.33%
D 7424 6360 87 87 1.17% 1.37%

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 13 170 83726 518.97 800 785 159.8
A 3 1 13735 81.03 800 785 159.8
A 13 254 10251 59.23 800 785 159.8
B 0 190 36605 239.83 784 765 149.4
B 12 111 18104 116.03 784 765 149.4
B 11 111 16504 105.32 784 765 149.4
C 14 238 121903 685.82 758 763 176.6
C 0 239 76335 427.84 758 763 176.6
C 8 208 21136 115.34 758 763 176.6
D 12 233 384921 2043.57 779 756 188.0
D 12 235 277013 1469.55 779 756 188.0
D 8 195 273734 1452.11 779 756 188.0

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