ASTROSAT CZTI

Data Quality Report

Orbit 21832

Creation date: 2024-06-27T18:32:48.453971
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/AS1A07_004T01_9000003230_21832cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21832cztM0_level2_quad_clean.evt
Size (bytes)508,887,36077,382,720
Size485.3 MB 73.8 MB
Events in quadrant A3,466,918464,497
Events in quadrant B3,751,061470,550
Events in quadrant C3,521,445458,961
Events in quadrant D4,176,383441,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151082
B0157383
C0151302
D0173412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72991642.246883%
B72992303.151117%
C72992002.740101%
D72991942.657898%

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 7469 7300 1 1 0.01% 0.01%
B 7469 7302 31 31 0.42% 0.42%
C 7469 7301 0 0 0.00% 0.00%
D 7469 7302 45 45 0.60% 0.62%

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 14 235 33112 178.51 890 871 180.6
A 13 254 13227 68.41 890 871 180.6
A 3 137 7627 37.41 890 871 180.6
B 3 64 150194 873.8 889 866 170.9
B 0 197 31618 179.95 889 866 170.9
B 0 190 26158 148.0 889 866 170.9
C 14 238 131330 641.28 858 861 203.5
C 3 248 22213 104.95 858 861 203.5
C 10 91 21821 103.02 858 861 203.5
D 1 52 780352 3678.19 863 837 211.9
D 14 35 42480 196.5 863 837 211.9
D 2 234 32406 148.96 863 837 211.9

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