ASTROSAT CZTI

Data Quality Report

Orbit 26955

Creation date: 2024-06-27T19:34:54.317715
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/AS1A09_134T01_9000003896_26955cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26955cztM0_level2_quad_clean.evt
Size (bytes)688,982,40086,495,040
Size657.1 MB 82.5 MB
Events in quadrant A4,328,933556,519
Events in quadrant B8,393,530505,128
Events in quadrant C3,502,010551,749
Events in quadrant D4,178,783528,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170260
B0295960
C0143600
D0166910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68394166.082761%
B6840183326.798246%
C68392163.158356%
D68392183.187601%

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 7569 6839 229 229 3.03% 3.35%
B 7570 6840 1170 1170 15.46% 17.11%
C 7569 6839 9 9 0.12% 0.13%
D 7569 6839 103 103 1.36% 1.51%

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 6 16 953923 5543.87 861 844 171.9
A 8 192 23285 130.53 861 844 171.9
A 0 13 20802 116.09 861 844 171.9
B 0 189 5157152 33499.62 808 787 153.9
B 12 111 17996 111.8 808 787 153.9
B 0 219 16031 99.04 808 787 153.9
C 14 238 136000 687.47 844 852 196.6
C 0 207 48534 242.55 844 852 196.6
C 15 208 14628 70.08 844 852 196.6
D 1 52 391165 1948.94 844 822 200.3
D 7 38 258386 1285.99 844 822 200.3
D 11 176 158385 786.7 844 822 200.3

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