ASTROSAT CZTI

Data Quality Report

Orbit 14896

Creation date: 2024-06-27T17:01:03.368653
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/AS1A04_011T09_9000002202_14896cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14896cztM0_level2_quad_clean.evt
Size (bytes)535,890,24099,757,440
Size511.1 MB 95.1 MB
Events in quadrant A3,668,823667,198
Events in quadrant B5,207,601603,045
Events in quadrant C3,419,476634,228
Events in quadrant D3,470,504641,354

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149383
B0200092
C0141842
D0145602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191582.317055%
B681984312.362516%
C68191231.803784%
D68191442.111747%

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 7810 6822 3 3 0.04% 0.04%
B 7810 6822 517 517 6.62% 7.58%
C 7810 6822 0 0 0.00% 0.00%
D 7810 6822 17 17 0.22% 0.25%

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 14 237 136436 767.58 874 857 176.6
A 12 189 118114 663.85 874 857 176.6
A 11 29 23545 128.45 874 857 176.6
B 3 64 1747423 11383.83 805 783 153.4
B 0 189 118297 765.9 805 783 153.4
B 0 229 113682 735.83 805 783 153.4
C 3 233 142903 730.04 839 841 194.6
C 13 61 6098 27.01 839 841 194.6
C 3 232 3081 11.51 839 841 194.6
D 7 254 121830 605.25 848 826 199.9
D 13 104 87128 431.67 848 826 199.9
D 2 234 24303 117.43 848 826 199.9

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