ASTROSAT CZTI

Data Quality Report

Orbit 21543

Creation date: 2024-06-27T18:29:27.368326
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/AS1T03_138T09_9000003190_21543cztM0_level2.evt modeM0/AS1T03_138T09_9000003190_21543cztM0_level2_quad_clean.evt
Size (bytes)214,865,28026,637,120
Size204.9 MB 25.4 MB
Events in quadrant A1,603,853154,037
Events in quadrant B1,568,104157,100
Events in quadrant C1,549,067146,405
Events in quadrant D1,589,343143,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064511
B062871
C062681
D065351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28691836.378529%
B28691976.866504%
C28692227.737888%
D28681505.230126%

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 2979 2870 7 7 0.23% 0.24%
B 2979 2870 0 0 0.00% 0.00%
C 2979 2870 0 0 0.00% 0.00%
D 2978 2869 6 6 0.20% 0.21%

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 4 2 76456 919.48 395 384 82.7
A 12 96 4057 44.4 395 384 82.7
A 13 254 4018 43.92 395 384 82.7
B 0 190 11785 145.53 392 382 78.4
B 12 111 9802 120.23 392 382 78.4
B 11 111 8837 107.91 392 382 78.4
C 14 238 58761 641.98 374 375 90.9
C 0 239 17478 188.06 374 375 90.9
C 10 91 6351 65.71 374 375 90.9
D 1 52 71385 740.19 384 370 95.9
D 14 35 33198 342.17 384 370 95.9
D 13 153 17816 181.84 384 370 95.9

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