ASTROSAT CZTI

Data Quality Report

Orbit 24814

Creation date: 2024-06-27T19:10:11.508184
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_197T01_9000003626_24814cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24814cztM0_level2_quad_clean.evt
Size (bytes)516,772,80085,417,920
Size492.8 MB 81.5 MB
Events in quadrant A3,701,908524,696
Events in quadrant B3,761,267524,931
Events in quadrant C3,761,504505,587
Events in quadrant D3,908,455501,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158422
B0159532
C0158512
D0164162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76091922.523328%
B76092132.799317%
C76092333.062163%
D76091692.221054%

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 7904 7611 4 4 0.05% 0.05%
B 7904 7611 1 1 0.01% 0.01%
C 7904 7611 1 1 0.01% 0.01%
D 7904 7611 9 9 0.11% 0.12%

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 12 96 26955 135.42 950 930 192.2
A 11 208 14119 68.63 950 930 192.2
A 13 254 11526 55.14 950 930 192.2
B 3 64 33511 180.07 937 910 181.1
B 12 111 22819 121.01 937 910 181.1
B 11 111 20634 108.94 937 910 181.1
C 14 238 140954 667.9 899 902 209.7
C 7 247 78770 371.35 899 902 209.7
C 3 233 22300 102.05 899 902 209.7
D 8 195 366710 1633.96 919 889 223.9
D 1 52 42176 184.41 919 889 223.9
D 2 234 29872 129.45 919 889 223.9

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