ASTROSAT CZTI

Data Quality Report

Orbit 21175

Creation date: 2024-06-27T18:24:26.836923
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_062T01_9000003132_21175cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21175cztM0_level2_quad_clean.evt
Size (bytes)476,890,56097,018,560
Size454.8 MB 92.5 MB
Events in quadrant A3,160,349648,633
Events in quadrant B3,596,297652,731
Events in quadrant C3,112,278618,514
Events in quadrant D4,156,243588,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133541
B0146561
C0131231
D0163681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6156400.649773%
B61571031.672893%
C6157621.006984%
D61571472.387526%

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 7486 6157 0 0 0.00% 0.00%
B 7487 6158 49 49 0.65% 0.80%
C 7487 6158 1 1 0.01% 0.02%
D 7487 6158 110 110 1.47% 1.79%

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 10 229 24187 144.23 810 795 162.2
A 8 6 13123 76.01 810 795 162.2
A 13 254 9020 50.72 810 795 162.2
B 3 64 148194 974.97 806 789 151.2
B 0 182 84585 554.25 806 789 151.2
B 0 244 39191 254.0 806 789 151.2
C 14 238 121026 683.16 758 764 176.0
C 3 233 20257 110.73 758 764 176.0
C 0 10 9399 49.05 758 764 176.0
D 1 20 790377 4300.56 763 740 183.6
D 13 153 165564 897.67 763 740 183.6
D 1 52 115255 623.68 763 740 183.6

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