ASTROSAT CZTI

Data Quality Report

Orbit 23839

Creation date: 2024-06-27T18:59:14.676135
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/AS1A07_027T03_9000003528_23839cztM0_level2.evt modeM0/AS1A07_027T03_9000003528_23839cztM0_level2_quad_clean.evt
Size (bytes)516,562,56091,886,400
Size492.6 MB 87.6 MB
Events in quadrant A2,934,669615,135
Events in quadrant B3,057,773628,662
Events in quadrant C3,260,065584,302
Events in quadrant D6,001,645551,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122221
B0125581
C0131611
D0220021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5767270.468181%
B5768410.710818%
C57681021.768377%
D57681732.999307%

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 7142 5768 0 0 0.00% 0.00%
B 7143 5769 6 6 0.08% 0.10%
C 7143 5769 18 18 0.25% 0.31%
D 7143 5769 192 192 2.69% 3.33%

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 13 254 10224 62.73 761 748 151.1
A 0 226 6723 39.56 761 748 151.1
A 3 137 6226 36.26 761 748 151.1
B 3 64 46757 324.8 760 745 141.7
B 0 229 18180 123.08 760 745 141.7
B 12 111 16016 107.8 760 745 141.7
C 0 239 206403 1251.18 715 721 164.4
C 14 238 117085 707.85 715 721 164.4
C 0 10 81336 490.39 715 721 164.4
D 8 195 1885291 10737.03 719 699 175.5
D 1 52 701810 3994.42 719 699 175.5
D 13 174 512881 2918.04 719 699 175.5

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