ASTROSAT CZTI

Data Quality Report

Orbit 16217

Creation date: 2024-06-27T17:19:30.049737
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/AS1T02_110T01_9000002388_16217cztM0_level2.evt modeM0/AS1T02_110T01_9000002388_16217cztM0_level2_quad_clean.evt
Size (bytes)529,764,48099,665,280
Size505.2 MB 95.0 MB
Events in quadrant A4,360,118637,255
Events in quadrant B3,820,873638,035
Events in quadrant C3,499,817611,226
Events in quadrant D3,855,122610,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179753
B0163142
C0152922
D0166792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74842283.046499%
B7484871.162480%
C7484710.948691%
D7484961.282737%

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 8165 7487 159 159 1.95% 2.12%
B 8165 7487 11 11 0.13% 0.15%
C 8165 7487 0 0 0.00% 0.00%
D 8165 7487 42 42 0.51% 0.56%

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 15 174 751762 4220.26 880 859 177.9
A 8 247 80816 449.38 880 859 177.9
A 4 2 71939 399.49 880 859 177.9
B 0 219 108071 637.95 884 860 168.1
B 0 198 92045 542.59 884 860 168.1
B 0 189 69348 407.53 884 860 168.1
C 14 238 132459 656.29 851 855 200.5
C 3 233 26231 126.55 851 855 200.5
C 7 247 22263 106.76 851 855 200.5
D 2 233 450201 2135.84 864 840 210.4
D 15 0 79985 376.18 864 840 210.4
D 2 234 37415 173.84 864 840 210.4

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