ASTROSAT CZTI

Data Quality Report

Orbit 20978

Creation date: 2024-06-27T18:22:01.424980
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_131T01_9000003090_20978cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20978cztM0_level2_quad_clean.evt
Size (bytes)254,664,00043,534,080
Size242.9 MB 41.5 MB
Events in quadrant A1,591,875270,791
Events in quadrant B1,824,675275,246
Events in quadrant C1,616,130271,254
Events in quadrant D2,445,081257,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069721
B075801
C069881
D095871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3425310.905109%
B3426531.546994%
C3426591.722125%
D34261985.779335%

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 3935 3426 0 0 0.00% 0.00%
B 3936 3427 8 8 0.20% 0.23%
C 3936 3427 0 0 0.00% 0.00%
D 3936 3427 150 150 3.81% 4.38%

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 0 226 3540 37.1 414 405 84.5
A 3 137 3441 35.93 414 405 84.5
A 12 194 2918 29.74 414 405 84.5
B 7 220 139770 1734.53 409 398 80.4
B 0 190 25765 315.7 409 398 80.4
B 3 64 18678 227.5 409 398 80.4
C 14 238 62401 656.16 397 399 94.5
C 7 247 5215 50.97 397 399 94.5
C 13 61 2732 24.69 397 399 94.5
D 1 52 666171 6883.07 395 383 96.7
D 9 1 159699 1647.04 395 383 96.7
D 7 238 101794 1048.41 395 383 96.7

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