ASTROSAT CZTI

Data Quality Report

Orbit 23840

Creation date: 2024-06-27T18:59:15.410252
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_23840cztM0_level2.evt modeM0/AS1A07_027T03_9000003528_23840cztM0_level2_quad_clean.evt
Size (bytes)532,278,72091,998,720
Size507.6 MB 87.7 MB
Events in quadrant A2,944,196614,742
Events in quadrant B3,099,578626,538
Events in quadrant C3,132,844588,989
Events in quadrant D6,548,199547,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122641
B0126551
C0128511
D0236141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5844240.410678%
B5845951.625321%
C5845971.659538%
D58442303.935661%

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 7224 5845 0 0 0.00% 0.00%
B 7225 5846 18 18 0.25% 0.31%
C 7225 5846 17 17 0.24% 0.29%
D 7224 5845 195 195 2.70% 3.34%

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 10755 65.71 763 750 152.3
A 0 226 6600 38.42 763 750 152.3
A 3 137 6160 35.53 763 750 152.3
B 3 64 97958 687.8 759 742 141.3
B 12 111 16133 108.89 759 742 141.3
B 11 111 14216 95.33 759 742 141.3
C 14 238 117241 701.02 720 727 166.2
C 0 10 89360 533.27 720 727 166.2
C 0 207 61930 368.24 720 727 166.2
D 8 195 3025502 17718.1 714 694 170.7
D 1 52 770921 4511.68 714 694 170.7
D 12 235 25871 147.48 714 694 170.7

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