ASTROSAT CZTI

Data Quality Report

Orbit 08669

Creation date: 2024-06-27T15:35:41.518865
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/AS1G07_024T01_9000001206_08669cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08669cztM0_level2_quad_clean.evt
Size (bytes)412,925,760124,361,280
Size393.8 MB 118.6 MB
Events in quadrant A2,936,484822,227
Events in quadrant B3,224,721856,521
Events in quadrant C2,909,469852,697
Events in quadrant D3,014,779804,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128973
B0137022
C0128212
D0132612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174180.291545%
B6174390.631681%
C6174140.226757%
D6174370.599287%

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 7514 6175 4 4 0.05% 0.06%
B 7514 6175 14 14 0.19% 0.23%
C 7514 6175 1 1 0.01% 0.02%
D 7514 6175 23 23 0.31% 0.37%

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 13 248 42081 283.5 732 717 145.9
A 13 251 37445 251.73 732 717 145.9
A 15 174 27068 180.61 732 717 145.9
B 10 16 73933 536.65 748 732 136.4
B 10 252 49619 358.4 748 732 136.4
B 0 231 33732 241.93 748 732 136.4
C 1 16 26096 150.98 736 740 167.9
C 13 61 5557 28.68 736 740 167.9
C 8 128 3647 17.31 736 740 167.9
D 7 71 89349 509.68 725 703 173.9
D 2 152 62334 354.36 725 703 173.9
D 12 233 41112 232.34 725 703 173.9

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