ASTROSAT CZTI

Data Quality Report

Orbit 21441

Creation date: 2024-06-27T18:27:51.772422
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_140T01_9000003160_21441cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21441cztM0_level2_quad_clean.evt
Size (bytes)584,225,280106,122,240
Size557.2 MB 101.2 MB
Events in quadrant A3,590,336690,993
Events in quadrant B3,683,758697,866
Events in quadrant C3,635,412674,974
Events in quadrant D6,278,031630,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155351
B0157242
C0156961
D0238581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7466580.776855%
B7465841.125251%
C74651071.433356%
D74665657.567640%

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 7736 7466 0 0 0.00% 0.00%
B 7735 7465 8 8 0.10% 0.11%
C 7735 7465 0 0 0.00% 0.00%
D 7736 7466 500 500 6.46% 6.70%

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 11 47 22070 113.5 923 904 186.5
A 13 254 12808 63.84 923 904 186.5
A 0 226 8009 38.1 923 904 186.5
B 0 230 35152 194.52 913 889 176.1
B 0 190 22685 123.74 913 889 176.1
B 12 111 21068 114.56 913 889 176.1
C 14 238 137857 662.13 875 879 206.9
C 3 233 89163 426.75 875 879 206.9
C 13 61 6194 25.69 875 879 206.9
D 12 235 975300 4608.53 871 846 211.4
D 1 20 959293 4532.83 871 846 211.4
D 1 52 366593 1729.74 871 846 211.4

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