ASTROSAT CZTI

Data Quality Report

Orbit 00820

Creation date: 2024-06-27T14:03:25.163919
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/AS1P01_010T01_9000000112_00820cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00820cztM0_level2_quad_clean.evt
Size (bytes)979,680,96093,015,360
Size934.3 MB 88.7 MB
Events in quadrant A7,288,667605,249
Events in quadrant B7,790,580604,464
Events in quadrant C7,069,182594,798
Events in quadrant D7,114,082584,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260220
B0274490
C0253680
D0255260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6138480.782014%
B6138490.798306%
C6138651.058977%
D61381031.678071%

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 7133 6138 196 196 2.75% 3.19%
B 7133 6138 257 257 3.60% 4.19%
C 7133 6138 197 197 2.76% 3.21%
D 7133 6138 258 258 3.62% 4.20%

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 15 69 30349 62.51 1878 1893 455.2
A 15 233 29670 61.02 1878 1893 455.2
A 8 192 19586 38.87 1878 1893 455.2
B 0 220 121009 260.3 1950 1960 457.4
B 2 2 59907 126.7 1950 1960 457.4
B 5 191 34359 70.84 1950 1960 457.4
C 9 52 166878 344.82 1718 1775 478.8
C 15 241 97045 198.97 1718 1775 478.8
C 3 79 36484 72.49 1718 1775 478.8
D 13 200 326550 611.66 1698 1759 531.0
D 1 4 180049 335.76 1698 1759 531.0
D 10 85 75964 139.75 1698 1759 531.0

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