ASTROSAT CZTI

Data Quality Report

Orbit 18020

Creation date: 2024-06-27T17:43:57.302861
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/AS1A05_159T01_9000002678_18020cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18020cztM0_level2_quad_clean.evt
Size (bytes)529,741,440116,467,200
Size505.2 MB 111.1 MB
Events in quadrant A3,371,838816,009
Events in quadrant B3,263,852819,248
Events in quadrant C3,338,448761,454
Events in quadrant D5,678,225727,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137101
B0132591
C0134881
D0211371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57701242.149047%
B57711151.992722%
C57711372.373939%
D57714517.814937%

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 7045 5770 22 22 0.31% 0.38%
B 7046 5771 8 8 0.11% 0.14%
C 7046 5772 0 0 0.00% 0.00%
D 7046 5771 312 312 4.43% 5.41%

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 15 174 237944 1448.96 812 802 163.7
A 4 2 10493 59.21 812 802 163.7
A 0 226 7159 38.84 812 802 163.7
B 7 220 58785 380.72 801 787 152.3
B 5 172 23822 151.21 801 787 152.3
B 0 197 21387 135.23 801 787 152.3
C 3 233 209253 1195.69 754 763 174.4
C 14 238 119936 683.46 754 763 174.4
C 0 207 58341 330.21 754 763 174.4
D 5 222 1644320 8853.36 762 742 185.6
D 7 238 601136 3234.1 762 742 185.6
D 7 38 212000 1137.97 762 742 185.6

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