ASTROSAT CZTI

Data Quality Report

Orbit 21589

Creation date: 2024-06-27T18:29:55.650011
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/AS1A06_002T02_9000003204_21589cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21589cztM0_level2_quad_clean.evt
Size (bytes)635,618,88087,782,400
Size606.2 MB 83.7 MB
Events in quadrant A4,164,931525,252
Events in quadrant B4,324,183528,549
Events in quadrant C3,963,693516,276
Events in quadrant D6,220,936497,700

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176300
B0183280
C0172220
D0242280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8499530.623603%
B8500961.129412%
C8500820.964706%
D84994935.800682%

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 8984 8500 0 0 0.00% 0.00%
B 8985 8501 19 19 0.21% 0.22%
C 8985 8501 0 0 0.00% 0.00%
D 8984 8499 299 299 3.33% 3.52%

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 15 236 262314 1275.8 1013 992 204.8
A 13 254 10950 48.62 1013 992 204.8
A 0 226 8686 37.56 1013 992 204.8
B 0 189 151577 780.43 1007 985 193.0
B 3 64 141965 730.62 1007 985 193.0
B 0 190 45113 228.69 1007 985 193.0
C 14 238 153123 658.05 975 981 231.2
C 3 233 7361 27.6 975 981 231.2
C 13 61 6661 24.57 975 981 231.2
D 1 52 2199693 9366.52 964 934 234.7
D 2 136 170662 723.03 964 934 234.7
D 7 223 95102 401.15 964 934 234.7

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