ASTROSAT CZTI

Data Quality Report

Orbit 20075

Creation date: 2024-06-27T18:10:57.108510
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_180T01_9000002992_20075cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20075cztM0_level2_quad_clean.evt
Size (bytes)563,538,24078,583,680
Size537.4 MB 74.9 MB
Events in quadrant A4,145,576492,917
Events in quadrant B3,692,648502,143
Events in quadrant C3,509,127478,064
Events in quadrant D5,292,652466,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163672
B0149032
C0141272
D0201383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63022343.713107%
B63021051.666138%
C6302961.523326%
D63011432.269481%

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 7617 6303 117 117 1.54% 1.86%
B 7617 6303 9 9 0.12% 0.14%
C 7617 6303 0 0 0.00% 0.00%
D 7616 6302 53 53 0.70% 0.84%

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 14 238 491502 2728.64 907 896 179.8
A 14 254 90954 500.88 907 896 179.8
A 4 2 57462 314.61 907 896 179.8
B 4 80 43431 255.88 898 882 166.3
B 0 189 28675 167.14 898 882 166.3
B 0 198 23864 138.21 898 882 166.3
C 14 238 139718 709.62 860 873 195.7
C 3 233 8353 38.23 860 873 195.7
C 13 61 6056 26.49 860 873 195.7
D 1 52 1584890 7574.67 881 859 209.1
D 7 223 185440 882.65 881 859 209.1
D 12 218 170151 809.54 881 859 209.1

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