ASTROSAT CZTI

Data Quality Report

Orbit 27922

Creation date: 2024-06-27T19:46:00.497913
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/AS1A10_049T01_9000004032_27922cztM0_level2.evt modeM0/AS1A10_049T01_9000004032_27922cztM0_level2_quad_clean.evt
Size (bytes)598,253,760102,813,120
Size570.5 MB 98.1 MB
Events in quadrant A3,661,429692,988
Events in quadrant B4,589,115686,860
Events in quadrant C3,657,854648,719
Events in quadrant D5,769,932631,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151300
B0180650
C0150600
D0218670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65011111.707430%
B65011922.953392%
C65011542.368866%
D65012263.476388%

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 7836 6501 0 0 0.00% 0.00%
B 7836 6501 23 23 0.29% 0.35%
C 7836 6501 0 0 0.00% 0.00%
D 7836 6501 152 152 1.94% 2.34%

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 15 174 17704 91.73 943 929 182.9
A 13 254 10513 52.41 943 929 182.9
A 8 192 9404 46.34 943 929 182.9
B 10 245 887182 5287.56 926 910 167.6
B 0 230 40285 234.91 926 910 167.6
B 12 111 19523 111.05 926 910 167.6
C 14 238 147130 731.52 881 886 199.9
C 3 233 76669 379.07 881 886 199.9
C 13 61 6079 25.98 881 886 199.9
D 8 195 1217841 5880.58 893 871 206.9
D 1 52 538797 2599.34 893 871 206.9
D 6 112 405030 1952.96 893 871 206.9

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