ASTROSAT CZTI

Data Quality Report

Orbit 49806

Creation date: 2024-12-13T15:28:00.940566
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_037T01_9000006440_49806cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49806cztM0_level2_quad_clean.evt
Size (bytes)1,073,721,60057,553,920
Size1024.0 MB 54.9 MB
Events in quadrant A6,653,803549,020
Events in quadrant B4,626,662664,264
Events in quadrant C12,165,47737,574
Events in quadrant D15,784,54528,014

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243251
B0183571
C0407741
D0513506

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A665182612.419185%
B66511492.240265%
C6651631594.948128%
D6651640396.271237%

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 7541 6651 718 718 9.52% 10.80%
B 7541 6651 104 104 1.38% 1.56%
C 7540 6650 2929 2929 38.85% 44.05%
D 7540 6650 5906 5906 78.33% 88.81%

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 98 847454 5075.04 669 654 166.9
A 15 63 736647 4410.95 669 654 166.9
A 4 204 292161 1747.06 669 654 166.9
B 5 172 914244 6151.14 699 675 148.5
B 5 185 271546 1823.79 699 675 148.5
B 10 28 150865 1011.24 699 675 148.5
C 15 147 6508006 136844.3 129 126 47.6
C 1 44 2211904 46508.11 129 126 47.6
C 15 197 919775 19337.9 129 126 47.6
D 7 61 5672726 49477.63 323 308 114.6
D 15 168 1931230 16842.46 323 308 114.6
D 8 176 1408550 12283.38 323 308 114.6

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