ASTROSAT CZTI

Data Quality Report

Orbit 27680

Creation date: 2024-06-27T19:42:56.068996
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_257T01_9000003976_27680cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27680cztM0_level2_quad_clean.evt
Size (bytes)569,185,92082,016,640
Size542.8 MB 78.2 MB
Events in quadrant A3,653,259499,855
Events in quadrant B3,727,513507,233
Events in quadrant C3,813,553486,147
Events in quadrant D5,524,503457,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158600
B0158920
C0160990
D0218640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76431682.198090%
B76432292.996206%
C76432002.616774%
D76434866.358760%

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 8608 7643 0 0 0.00% 0.00%
B 8608 7643 1 1 0.01% 0.01%
C 8608 7643 7 7 0.08% 0.09%
D 8608 7643 467 467 5.43% 6.11%

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 13 254 12088 58.61 944 922 190.5
A 8 192 11268 54.3 944 922 190.5
A 3 137 9573 45.41 944 922 190.5
B 12 111 23222 121.33 943 917 183.8
B 11 111 20413 106.05 943 917 183.8
B 14 111 18500 95.64 943 917 183.8
C 14 238 143694 659.25 913 920 216.6
C 3 233 101189 462.99 913 920 216.6
C 15 208 9115 37.84 913 920 216.6
D 12 2 1514249 6981.31 904 879 216.8
D 1 52 430734 1982.96 904 879 216.8
D 2 250 120617 552.36 904 879 216.8

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