ASTROSAT CZTI

Data Quality Report

Orbit 05578

Creation date: 2024-06-27T14:56:51.443776
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/AS1A02_081T01_9000000720_05578cztM0_level2.evt modeM0/AS1A02_081T01_9000000720_05578cztM0_level2_quad_clean.evt
Size (bytes)557,141,760105,696,000
Size531.3 MB 100.8 MB
Events in quadrant A3,844,020670,432
Events in quadrant B4,652,277670,392
Events in quadrant C3,796,777653,906
Events in quadrant D4,011,064624,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175023
B0195852
C0174082
D0179942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8391770.917650%
B83911892.252413%
C8391550.655464%
D8391540.643547%

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 8876 8393 2 2 0.02% 0.02%
B 8876 8393 31 31 0.35% 0.37%
C 8876 8393 0 0 0.00% 0.00%
D 8876 8393 18 18 0.20% 0.21%

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 29463 142.06 980 956 200.7
A 13 14 14564 67.81 980 956 200.7
A 0 50 12888 59.46 980 956 200.7
B 15 204 362527 1902.39 992 969 190.1
B 10 245 129064 673.99 992 969 190.1
B 0 214 65882 341.55 992 969 190.1
C 9 16 16349 68.59 961 962 224.3
C 1 16 13968 57.98 961 962 224.3
C 13 61 7973 31.25 961 962 224.3
D 8 195 135316 572.03 954 921 234.9
D 2 152 84737 356.75 954 921 234.9
D 2 14 46183 192.65 954 921 234.9

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