ASTROSAT CZTI

Data Quality Report

Orbit 32386

Creation date: 2024-06-27T20:39:38.673158
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/AS1T04_059T01_9000004704_32386cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32386cztM0_level2_quad_clean.evt
Size (bytes)760,083,84083,335,680
Size724.9 MB 79.5 MB
Events in quadrant A3,386,180536,591
Events in quadrant B9,547,717487,259
Events in quadrant C4,750,993499,183
Events in quadrant D4,847,023497,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148142
B0333371
C0186441
D0191481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72161482.050998%
B7216151020.925721%
C72166709.284922%
D72164646.430155%

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 7406 7217 0 0 0.00% 0.00%
B 7406 7217 854 854 11.53% 11.83%
C 7406 7217 188 188 2.54% 2.60%
D 7406 7217 265 265 3.58% 3.67%

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 13 254 12350 64.64 873 852 177.9
A 3 137 9130 46.54 873 852 177.9
A 13 6 9008 45.85 873 852 177.9
B 4 80 4008215 25420.98 821 799 157.6
B 6 159 1909667 12108.87 821 799 157.6
B 5 172 253152 1600.8 821 799 157.6
C 3 233 1215964 6254.91 821 826 194.3
C 14 238 192943 988.92 821 826 194.3
C 14 254 85980 438.33 821 826 194.3
D 12 233 849852 4249.62 836 813 199.8
D 8 195 412594 2061.05 836 813 199.8
D 12 218 222662 1110.4 836 813 199.8

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