ASTROSAT CZTI

Data Quality Report

Orbit 22729

Creation date: 2024-06-27T18:44:56.233999
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/AS1A08_007T01_9000003362_22729cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22729cztM0_level2_quad_clean.evt
Size (bytes)560,295,36090,676,800
Size534.3 MB 86.5 MB
Events in quadrant A3,518,507572,880
Events in quadrant B3,674,706575,166
Events in quadrant C3,542,038549,277
Events in quadrant D5,734,581537,129

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151893
B0155582
C0152662
D0220432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73441221.661220%
B73451532.083050%
C73451421.933288%
D73455807.896528%

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 7644 7345 0 0 0.00% 0.00%
B 7645 7346 2 2 0.03% 0.03%
C 7645 7346 0 0 0.00% 0.00%
D 7645 7346 318 318 4.16% 4.33%

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 12600 63.96 911 889 183.1
A 0 226 7861 38.08 911 889 183.1
A 3 137 7256 34.77 911 889 183.1
B 0 197 41600 237.56 903 880 171.4
B 0 228 37335 212.68 903 880 171.4
B 0 190 26908 151.85 903 880 171.4
C 14 238 135391 665.46 867 871 202.1
C 10 22 20019 94.72 867 871 202.1
C 13 61 6112 25.93 867 871 202.1
D 1 52 1727596 8164.13 867 841 211.5
D 12 233 498596 2353.4 867 841 211.5
D 12 227 76162 356.12 867 841 211.5

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