ASTROSAT CZTI

Data Quality Report

Orbit 19456

Creation date: 2024-06-27T18:03:06.948221
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/AS1A05_229T02_9000002890_19456cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19456cztM0_level2_quad_clean.evt
Size (bytes)514,748,16078,445,440
Size490.9 MB 74.8 MB
Events in quadrant A3,425,338489,556
Events in quadrant B3,518,025491,643
Events in quadrant C4,138,768470,508
Events in quadrant D4,058,349462,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141721
B0143901
C0166222
D0163861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6623921.389099%
B66231532.310131%
C66221692.552099%
D66222183.292057%

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 7583 6623 4 4 0.05% 0.06%
B 7583 6623 36 36 0.47% 0.54%
C 7582 6622 10 10 0.13% 0.15%
D 7582 6623 150 150 1.98% 2.26%

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 4 2 94891 549.15 853 835 171.3
A 11 29 33700 191.88 853 835 171.3
A 13 254 9067 48.06 853 835 171.3
B 7 220 106229 656.82 845 825 160.5
B 0 198 21841 130.96 845 825 160.5
B 12 111 18481 110.02 845 825 160.5
C 9 221 579656 3102.82 809 816 186.6
C 3 233 236516 1263.45 809 816 186.6
C 14 238 126227 672.25 809 816 186.6
D 1 52 742673 3738.66 820 798 198.4
D 7 238 57778 287.15 820 798 198.4
D 7 96 57149 283.98 820 798 198.4

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