ASTROSAT CZTI

Data Quality Report

Orbit 19912

Creation date: 2024-06-27T18:08:41.231063
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/AS1A05_064T01_9000002964_19912cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19912cztM0_level2_quad_clean.evt
Size (bytes)533,908,800119,707,200
Size509.2 MB 114.2 MB
Events in quadrant A3,063,143823,654
Events in quadrant B4,067,917817,829
Events in quadrant C3,483,001791,721
Events in quadrant D5,122,004746,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133511
B0163111
C0143501
D0195615

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392620.969962%
B63931151.798842%
C63931091.704990%
D63925208.135169%

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 7392 6392 9 9 0.12% 0.14%
B 7393 6393 43 43 0.58% 0.67%
C 7393 6393 34 34 0.46% 0.53%
D 7391 6391 459 459 6.21% 7.18%

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 5 16 58046 369.12 771 755 155.2
A 9 143 15686 96.2 771 755 155.2
A 14 238 11788 71.09 771 755 155.2
B 3 112 700076 4919.24 761 744 142.2
B 7 220 103236 720.95 761 744 142.2
B 0 190 74098 515.99 761 744 142.2
C 9 221 468171 2744.22 734 737 170.3
C 14 238 113056 659.4 734 737 170.3
C 0 207 17376 97.68 734 737 170.3
D 7 38 1079194 6107.27 724 702 176.6
D 12 225 408102 2307.02 724 702 176.6
D 12 218 299175 1690.19 724 702 176.6

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