ASTROSAT CZTI

Data Quality Report

Orbit 06691

Creation date: 2024-06-27T15:10:27.594034
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/AS1T01_145T01_9000000916_06691cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06691cztM0_level2_quad_clean.evt
Size (bytes)629,749,440123,500,160
Size600.6 MB 117.8 MB
Events in quadrant A3,349,499853,889
Events in quadrant B3,858,562868,940
Events in quadrant C3,340,654854,071
Events in quadrant D8,020,900647,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153373
B0166612
C0154382
D0290132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74032843.836283%
B74032943.971363%
C74032713.660678%
D7403217329.352965%

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 7473 7406 0 0 0.00% 0.00%
B 7473 7406 3 3 0.04% 0.04%
C 7473 7406 0 0 0.00% 0.00%
D 7473 7406 1448 1448 19.38% 19.55%

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 8 15 53511 300.62 845 823 175.3
A 4 2 22185 121.88 845 823 175.3
A 0 23 9636 50.28 845 823 175.3
B 0 228 316086 1914.6 857 833 164.7
B 0 214 90173 542.58 857 833 164.7
B 4 81 54481 325.82 857 833 164.7
C 9 54 81888 417.73 833 834 194.0
C 13 61 6427 28.82 833 834 194.0
C 8 128 4807 20.48 833 834 194.0
D 2 33 4463441 26578.05 684 661 167.9
D 8 195 695648 4138.99 684 661 167.9
D 2 152 103326 611.42 684 661 167.9

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