ASTROSAT CZTI

Data Quality Report

Orbit 26291

Creation date: 2024-06-27T19:27:04.818592
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/AS1A09_044T01_9000003792_26291cztM0_level2.evt modeM0/AS1A09_044T01_9000003792_26291cztM0_level2_quad_clean.evt
Size (bytes)656,305,92087,376,320
Size625.9 MB 83.3 MB
Events in quadrant A3,803,228548,616
Events in quadrant B3,706,527560,404
Events in quadrant C5,575,092532,149
Events in quadrant D6,272,915472,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161320
B0158500
C0214170
D0236820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76402102.748691%
B76402172.840314%
C764099713.049738%
D7640111614.607330%

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 7880 7641 6 6 0.08% 0.08%
B 7880 7641 2 2 0.03% 0.03%
C 7880 7641 434 434 5.51% 5.68%
D 7880 7641 898 898 11.40% 11.75%

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 13 169175 882.0 942 921 190.8
A 13 254 12499 60.69 942 921 190.8
A 3 137 9171 43.25 942 921 190.8
B 0 230 27625 147.89 939 915 180.6
B 12 111 22363 118.75 939 915 180.6
B 11 111 20247 107.04 939 915 180.6
C 4 254 1940860 9569.3 868 871 202.7
C 14 238 136418 668.61 868 871 202.7
C 3 233 99138 484.72 868 871 202.7
D 12 233 2179728 10425.93 870 849 209.0
D 1 52 707513 3381.38 870 849 209.0
D 6 17 34607 161.53 870 849 209.0

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