ASTROSAT CZTI

Data Quality Report

Orbit 12703

Creation date: 2024-06-27T16:31:17.719900
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/AS1A04_174T01_9000001876_12703cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12703cztM0_level2_quad_clean.evt
Size (bytes)507,885,12086,112,000
Size484.4 MB 82.1 MB
Events in quadrant A3,268,617552,255
Events in quadrant B4,934,157508,951
Events in quadrant C3,211,818550,610
Events in quadrant D3,509,283526,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137913
B0187062
C0138682
D0148502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6739640.949696%
B67396439.541475%
C6739500.741950%
D6739961.424544%

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 7695 6741 0 0 0.00% 0.00%
B 7695 6741 446 446 5.80% 6.62%
C 7695 6741 1 1 0.01% 0.01%
D 7695 6741 46 46 0.60% 0.68%

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 8 15 18048 99.94 840 825 172.3
A 12 189 16996 93.84 840 825 172.3
A 0 226 7527 38.89 840 825 172.3
B 4 239 1629432 10565.15 802 783 154.2
B 0 219 48610 310.26 802 783 154.2
B 4 81 42699 271.91 802 783 154.2
C 15 208 41281 214.23 812 818 188.9
C 13 61 5840 26.59 812 818 188.9
C 8 222 3408 13.71 812 818 188.9
D 1 52 190761 961.27 808 787 197.6
D 1 255 122102 613.85 808 787 197.6
D 13 249 59929 299.26 808 787 197.6

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