ASTROSAT CZTI

Data Quality Report

Orbit 29374

Creation date: 2024-06-27T20:03:22.062835
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_279T01_9000004218_29374cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29374cztM0_level2_quad_clean.evt
Size (bytes)712,342,08085,968,000
Size679.3 MB 82.0 MB
Events in quadrant A3,730,248540,282
Events in quadrant B4,012,472539,311
Events in quadrant C4,038,423518,474
Events in quadrant D9,279,874477,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158391
B0165741
C0163941
D0329042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75792002.638871%
B75802433.205805%
C75802283.007916%
D7579145619.210978%

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 7729 7581 1 1 0.01% 0.01%
B 7730 7582 8 8 0.10% 0.11%
C 7730 7582 1 1 0.01% 0.01%
D 7729 7581 1155 1155 14.94% 15.24%

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 20269 100.71 954 936 192.0
A 13 254 14867 72.57 954 936 192.0
A 0 13 12038 57.83 954 936 192.0
B 0 229 205638 1152.9 941 919 177.6
B 0 190 30374 165.88 941 919 177.6
B 10 245 24714 134.0 941 919 177.6
C 3 233 186322 869.76 912 918 213.2
C 14 238 152160 709.5 912 918 213.2
C 10 9 96010 446.09 912 918 213.2
D 12 33 3755329 17966.87 870 847 209.0
D 1 52 1384731 6622.5 870 847 209.0
D 7 80 258959 1235.18 870 847 209.0

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