ASTROSAT CZTI

Data Quality Report

Orbit 46296

Creation date: 2024-06-27T23:21:24.354488
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/AS1A13_072T02_9000006194_46296cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46296cztM0_level2_quad_clean.evt
Size (bytes)458,786,880105,857,280
Size437.5 MB 101.0 MB
Events in quadrant A5,831,909701,045
Events in quadrant B4,448,180697,891
Events in quadrant C3,059,946699,019
Events in quadrant D3,124,336641,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214852
B0175131
C0139301
D0143331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66761512.261833%
B66763735.587178%
C6677681.018421%
D6677771.153213%

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 7586 6677 6 6 0.08% 0.09%
B 7586 6677 220 220 2.90% 3.29%
C 7587 6678 10 10 0.13% 0.15%
D 7587 6678 18 18 0.24% 0.27%

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 10 83 2833113 18006.49 752 735 157.3
A 15 223 63332 397.95 752 735 157.3
A 2 79 21131 129.67 752 735 157.3
B 4 171 1073497 7235.08 744 721 148.3
B 3 112 387211 2606.59 744 721 148.3
B 0 190 33653 222.1 744 721 148.3
C 12 2 99766 568.31 739 742 174.2
C 1 3 38597 217.25 739 742 174.2
C 11 16 35456 199.23 739 742 174.2
D 13 249 214551 1144.61 735 712 186.8
D 13 171 73172 387.85 735 712 186.8
D 2 234 28570 149.11 735 712 186.8

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