ASTROSAT CZTI

Data Quality Report

Orbit 27748

Creation date: 2024-06-27T19:43:51.587459
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/AS1A10_002T05_9000004000_27748cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27748cztM0_level2_quad_clean.evt
Size (bytes)488,407,680105,958,080
Size465.8 MB 101.0 MB
Events in quadrant A3,472,484712,169
Events in quadrant B3,465,705711,121
Events in quadrant C3,572,515687,273
Events in quadrant D3,862,003667,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144470
B0143000
C0146100
D0155960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171631.020904%
B6171851.377410%
C61701332.155592%
D61701342.171799%

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 7491 6171 5 5 0.07% 0.08%
B 7491 6172 16 16 0.21% 0.26%
C 7490 6170 8 8 0.11% 0.13%
D 7490 6170 68 68 0.91% 1.10%

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 0 13 111650 667.35 841 825 166.1
A 6 16 101411 605.7 841 825 166.1
A 8 192 15528 88.54 841 825 166.1
B 10 245 141835 929.53 826 807 151.7
B 0 190 49600 321.6 826 807 151.7
B 4 200 32875 211.36 826 807 151.7
C 3 233 214250 1147.19 809 817 186.0
C 14 238 130519 697.14 809 817 186.0
C 10 22 50275 265.83 809 817 186.0
D 1 52 643800 3326.82 817 797 193.3
D 2 250 101109 519.0 817 797 193.3
D 2 234 27269 136.96 817 797 193.3

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