ASTROSAT CZTI

Data Quality Report

Orbit 27388

Creation date: 2024-06-27T19:39:36.698052
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/AS1T03_249T01_9000003934_27388cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27388cztM0_level2_quad_clean.evt
Size (bytes)489,634,56075,677,760
Size467.0 MB 72.2 MB
Events in quadrant A2,988,374483,353
Events in quadrant B3,040,196486,254
Events in quadrant C3,556,472462,504
Events in quadrant D4,850,681454,394

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120520
B0122460
C0138890
D0183150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5788821.416724%
B5789931.606495%
C57882023.489979%
D57882594.474775%

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 6938 5789 0 0 0.00% 0.00%
B 6939 5790 6 6 0.09% 0.10%
C 6938 5789 65 65 0.94% 1.12%
D 6938 5789 179 179 2.58% 3.09%

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 9709 57.6 772 756 155.4
A 3 137 7026 40.34 772 756 155.4
A 0 226 6898 39.52 772 756 155.4
B 4 52 31543 215.32 755 737 143.1
B 0 229 17803 119.28 755 737 143.1
B 12 111 16722 111.73 755 737 143.1
C 2 16 593010 3477.08 729 734 170.3
C 14 238 116880 681.86 729 734 170.3
C 13 61 5016 25.14 729 734 170.3
D 1 52 1836992 9392.11 733 722 195.5
D 2 250 120423 612.24 733 722 195.5
D 2 234 24614 122.2 733 722 195.5

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