ASTROSAT CZTI

Data Quality Report

Orbit 27897

Creation date: 2024-06-27T19:45:44.528740
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/AS1A10_048T06_9000004030_27897cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27897cztM0_level2_quad_clean.evt
Size (bytes)570,055,68082,851,840
Size543.6 MB 79.0 MB
Events in quadrant A2,971,341553,775
Events in quadrant B3,176,354557,314
Events in quadrant C3,066,454525,537
Events in quadrant D7,620,518429,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130240
B0135930
C0131210
D0271400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334370.584149%
B6334871.373540%
C63331041.642192%
D6333159025.106585%

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 6579 6334 1 1 0.02% 0.02%
B 6579 6334 6 6 0.09% 0.09%
C 6578 6334 0 0 0.00% 0.00%
D 6578 6333 1287 1287 19.57% 20.32%

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 13 254 10811 64.83 767 751 155.2
A 3 137 7551 43.82 767 751 155.2
A 8 192 6900 39.63 767 751 155.2
B 0 230 90056 606.15 766 746 147.3
B 10 245 32221 213.62 766 746 147.3
B 12 111 18160 118.19 766 746 147.3
C 14 238 119802 686.9 731 734 173.3
C 3 233 78777 450.23 731 734 173.3
C 2 16 8346 43.91 731 734 173.3
D 1 52 3803766 24814.74 629 611 153.3
D 8 195 515637 3360.43 629 611 153.3
D 13 104 431062 2808.6 629 611 153.3

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