ASTROSAT CZTI

Data Quality Report

Orbit 14402

Creation date: 2024-06-27T16:54:37.653995
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/AS1G08_066T04_9000002122_14402cztM0_level2.evt modeM0/AS1G08_066T04_9000002122_14402cztM0_level2_quad_clean.evt
Size (bytes)459,054,72088,367,040
Size437.8 MB 84.3 MB
Events in quadrant A2,874,827579,565
Events in quadrant B3,022,859598,691
Events in quadrant C3,419,687582,274
Events in quadrant D4,206,489525,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119162
B0124292
C0138662
D0161072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5584230.411891%
B5584530.949140%
C5584320.573066%
D55844447.951289%

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 6940 5586 2 2 0.03% 0.04%
B 6940 5586 12 12 0.17% 0.21%
C 6940 5586 0 0 0.00% 0.00%
D 6940 5586 412 412 5.94% 7.38%

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 12 189 43380 293.66 724 708 145.3
A 8 15 19912 132.16 724 708 145.3
A 11 29 15012 98.44 724 708 145.3
B 0 189 59438 432.96 727 709 135.6
B 0 229 52986 385.39 727 709 135.6
B 4 173 44042 319.46 727 709 135.6
C 3 233 595148 3623.03 723 729 164.1
C 13 61 5132 26.84 723 729 164.1
C 14 234 3411 16.35 723 729 164.1
D 13 122 909715 5627.12 684 670 161.5
D 15 0 450709 2785.8 684 670 161.5
D 2 120 153533 946.24 684 670 161.5

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