ASTROSAT CZTI

Data Quality Report

Orbit 16997

Creation date: 2024-06-27T17:30:27.893513
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_143T01_9000002524_16997cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16997cztM0_level2_quad_clean.evt
Size (bytes)670,671,36087,344,640
Size639.6 MB 83.3 MB
Events in quadrant A3,742,725549,047
Events in quadrant B4,520,564552,077
Events in quadrant C4,302,502537,367
Events in quadrant D7,219,497465,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163121
B0184001
C0178011
D0267652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77692563.295147%
B77694115.290256%
C77692813.616939%
D7769112914.532115%

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 7830 7771 1 1 0.01% 0.01%
B 7830 7771 95 95 1.21% 1.22%
C 7830 7771 0 0 0.00% 0.00%
D 7830 7771 806 806 10.29% 10.37%

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 12 189 35291 176.02 958 933 195.2
A 15 174 24344 119.94 958 933 195.2
A 0 226 8306 37.77 958 933 195.2
B 3 64 446715 2411.58 946 920 184.9
B 15 35 179410 965.56 946 920 184.9
B 7 220 62530 333.29 946 920 184.9
C 3 233 550366 2505.37 922 926 219.3
C 14 238 138786 628.62 922 926 219.3
C 9 54 7629 30.56 922 926 219.3
D 1 52 3692700 16985.74 890 866 217.3
D 12 110 51572 233.29 890 866 217.3
D 2 152 41804 188.35 890 866 217.3

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